animations/make

2026-02-03 23:43:39 +00:00 · 2026-01-07 23:46:32 -08:00
630 changed files with 9743 additions and 55570 deletions
--- a/.bazelignore
+++ b/.bazelignore
@@ -1,3 +0,0 @@
-# Without this, Bazel will consider BUILD.bazel files in
-# .git/sl/origbackups (which can be populated by Sapling SCM).
-.git
--- a/.bazelrc
+++ b/.bazelrc
@@ -1,45 +0,0 @@
-common --repo_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
-common --repo_env=BAZEL_NO_APPLE_CPP_TOOLCHAIN=1
-
-common --disk_cache=~/.cache/bazel-disk-cache
-common --repo_contents_cache=~/.cache/bazel-repo-contents-cache
-common --repository_cache=~/.cache/bazel-repo-cache
-
-common --experimental_platform_in_output_dir
-
-common --enable_platform_specific_config
-# TODO(zbarsky): We need to untangle these libc constraints to get linux remote builds working.
-common:linux --host_platform=//:local
-common --@rules_cc//cc/toolchains/args/archiver_flags:use_libtool_on_macos=False
-common --@toolchains_llvm_bootstrapped//config:experimental_stub_libgcc_s
-
-# We need to use the sh toolchain on windows so we don't send host bash paths to the linux executor.
-common:windows --@rules_rust//rust/settings:experimental_use_sh_toolchain_for_bootstrap_process_wrapper
-
-# TODO(zbarsky): rules_rust doesn't implement this flag properly with remote exec...
-# common --@rules_rust//rust/settings:pipelined_compilation
-
-common --incompatible_strict_action_env
-# Not ideal, but We need to allow dotslash to be found
-common --test_env=PATH=/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
-
-common --test_output=errors
-common --bes_results_url=https://app.buildbuddy.io/invocation/
-common --bes_backend=grpcs://remote.buildbuddy.io
-common --remote_cache=grpcs://remote.buildbuddy.io
-common --remote_download_toplevel
-common --nobuild_runfile_links
-common --remote_timeout=3600
-common --noexperimental_throttle_remote_action_building
-common --experimental_remote_execution_keepalive
-common --grpc_keepalive_time=30s
-
-# This limits both in-flight executions and concurrent downloads. Even with high number
-# of jobs execution will still be limited by CPU cores, so this just pays a bit of
-# memory in exchange for higher download concurrency.
-common --jobs=30
-
-common:remote --extra_execution_platforms=//:rbe
-common:remote --remote_executor=grpcs://remote.buildbuddy.io
-common:remote --jobs=800
-
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +0,0 @@
-8.5.1
--- a/.github/ISSUE_TEMPLATE/2-bug-report.yml
+++ b/.github/ISSUE_TEMPLATE/2-bug-report.yml
@@ -40,18 +40,11 @@ body:
      description: |
        For MacOS and Linux: copy the output of `uname -mprs`
        For Windows: copy the output of `"$([Environment]::OSVersion | ForEach-Object VersionString) $(if ([Environment]::Is64BitOperatingSystem) { "x64" } else { "x86" })"` in the PowerShell console
-  - type: input
-    id: terminal
-    attributes:
-      label: What terminal emulator and version are you using (if applicable)?
-      description: Also note any multiplexer in use (screen / tmux / zellij)
-      description: |
-        E.g, VSCode, Terminal.app, iTerm2, Ghostty, Windows Terminal (WSL / PowerShell)
  - type: textarea
    id: actual
    attributes:
      label: What issue are you seeing?
-      description: Please include the full error messages and prompts with PII redacted. If possible, please provide text instead of a screenshot.
+      description: Please include the full error messages and prompts with PII redacted. If possible, please provide text instead of a screenshot. 
    validations:
      required: true
  - type: textarea
--- a/.github/workflows/Dockerfile.bazel
+++ b/.github/workflows/Dockerfile.bazel
@@ -1,20 +0,0 @@
-FROM ubuntu:24.04
-
-# TODO(mbolin): Published to docker.io/mbolin491/codex-bazel:latest for
-# initial debugging, but we should publish to a more proper location.
-#
-# docker buildx create --use
-# docker buildx build --platform linux/amd64,linux/arm64 -f .github/workflows/Dockerfile.bazel -t mbolin491/codex-bazel:latest --push .
-
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-    curl git python3 ca-certificates && \
-    rm -rf /var/lib/apt/lists/*
-
-# Install dotslash.
-RUN curl -LSfs "https://github.com/facebook/dotslash/releases/download/v0.5.8/dotslash-ubuntu-22.04.$(uname -m).tar.gz" | tar fxz - -C /usr/local/bin
-
-# Ubuntu 24.04 ships with user 'ubuntu' already created with UID 1000.
-USER ubuntu
-
-WORKDIR /workspace
--- a/.github/workflows/bazel.yml
+++ b/.github/workflows/bazel.yml
@@ -1,110 +0,0 @@
-name: Bazel (experimental)
-
-# Note this workflow was originally derived from:
-# https://github.com/cerisier/toolchains_llvm_bootstrapped/blob/main/.github/workflows/ci.yaml
-
-on:
-  pull_request: {}
-  push:
-    branches:
-      - main
-  workflow_dispatch:
-
-concurrency:
-  # Cancel previous actions from the same PR or branch except 'main' branch.
-  # See https://docs.github.com/en/actions/using-jobs/using-concurrency and https://docs.github.com/en/actions/learn-github-actions/contexts for more info.
-  group: concurrency-group::${{ github.workflow }}::${{ github.event.pull_request.number > 0 && format('pr-{0}', github.event.pull_request.number) || github.ref_name }}${{ github.ref_name == 'main' && format('::{0}', github.run_id) || ''}}
-  cancel-in-progress: ${{ github.ref_name != 'main' }}
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          # macOS
-          - os: macos-15-xlarge
-            target: aarch64-apple-darwin
-          - os: macos-15-xlarge
-            target: x86_64-apple-darwin
-
-          # Linux
-          - os: ubuntu-24.04-arm
-            target: aarch64-unknown-linux-gnu
-          - os: ubuntu-24.04
-            target: x86_64-unknown-linux-gnu
-          - os: ubuntu-24.04-arm
-            target: aarch64-unknown-linux-musl
-          - os: ubuntu-24.04
-            target: x86_64-unknown-linux-musl
-          # TODO: Enable Windows once we fix the toolchain issues there.
-          #- os: windows-latest
-          #  target: x86_64-pc-windows-gnullvm
-    runs-on: ${{ matrix.os }}
-
-    # Configure a human readable name for each job
-    name: Local Bazel build on ${{ matrix.os }} for ${{ matrix.target }}
-
-    steps:
-      - uses: actions/checkout@v6
-
-      # Some integration tests rely on DotSlash being installed.
-      # See https://github.com/openai/codex/pull/7617.
-      - name: Install DotSlash
-        uses: facebook/install-dotslash@v2
-
-      - name: Make DotSlash available in PATH (Unix)
-        if: runner.os != 'Windows'
-        run: cp "$(which dotslash)" /usr/local/bin
-
-      - name: Make DotSlash available in PATH (Windows)
-        if: runner.os == 'Windows'
-        shell: pwsh
-        run: Copy-Item (Get-Command dotslash).Source -Destination "$env:LOCALAPPDATA\Microsoft\WindowsApps\dotslash.exe"
-
-      # Install Bazel via Bazelisk
-      - name: Set up Bazel
-        uses: bazelbuild/setup-bazelisk@v3
-
-      # TODO(mbolin): Bring this back once we have caching working. Currently,
-      # we never seem to get a cache hit but we still end up paying the cost of
-      # uploading at the end of the build, which takes over a minute!
-      #
-      # Cache build and external artifacts so that the next ci build is incremental.
-      # Because github action caches cannot be updated after a build, we need to
-      # store the contents of each build in a unique cache key, then fall back to loading
-      # it on the next ci run. We use hashFiles(...) in the key and restore-keys- with
-      # the prefix to load the most recent cache for the branch on a cache miss. You
-      # should customize the contents of hashFiles to capture any bazel input sources,
-      # although this doesn't need to be perfect. If none of the input sources change
-      # then a cache hit will load an existing cache and bazel won't have to do any work.
-      # In the case of a cache miss, you want the fallback cache to contain most of the
-      # previously built artifacts to minimize build time. The more precise you are with
-      # hashFiles sources the less work bazel will have to do.
-      # - name: Mount bazel caches
-      #   uses: actions/cache@v4
-      #   with:
-      #     path: |
-      #       ~/.cache/bazel-repo-cache
-      #       ~/.cache/bazel-repo-contents-cache
-      #     key: bazel-cache-${{ matrix.os }}-${{ hashFiles('**/BUILD.bazel', '**/*.bzl', 'MODULE.bazel') }}
-      #     restore-keys: |
-      #       bazel-cache-${{ matrix.os }}
-
-      - name: Configure Bazel startup args (Windows)
-        if: runner.os == 'Windows'
-        shell: pwsh
-        run: |
-          # Use a very short path to reduce argv/path length issues.
-          "BAZEL_STARTUP_ARGS=--output_user_root=C:\" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
-
-      - name: bazel test //...
-        env:
-          BUILDBUDDY_API_KEY: ${{ secrets.BUILDBUDDY_API_KEY }}
-        shell: bash
-        run: |
-          bazel $BAZEL_STARTUP_ARGS --bazelrc=.github/workflows/ci.bazelrc test //... \
-            --build_metadata=REPO_URL=https://github.com/openai/codex.git \
-            --build_metadata=COMMIT_SHA=$(git rev-parse HEAD) \
-            --build_metadata=ROLE=CI \
-            --build_metadata=VISIBILITY=PUBLIC \
-            "--remote_header=x-buildbuddy-api-key=$BUILDBUDDY_API_KEY"
--- a/.github/workflows/ci.bazelrc
+++ b/.github/workflows/ci.bazelrc
@@ -1,20 +0,0 @@
-common --remote_download_minimal
-common --nobuild_runfile_links
-common --keep_going
-
-# We prefer to run the build actions entirely remotely so we can dial up the concurrency.
-# We have platform-specific tests, so we want to execute the tests on all platforms using the strongest sandboxing available on each platform.
-
-# On linux, we can do a full remote build/test, by targeting the right (x86/arm) runners, so we have coverage of both.
-# Linux crossbuilds don't work until we untangle the libc constraint mess.
-common:linux --config=remote
-common:linux --strategy=remote
-common:linux --platforms=//:rbe
-
-# On mac, we can run all the build actions remotely but test actions locally.
-common:macos --config=remote
-common:macos --strategy=remote
-common:macos --strategy=TestRunner=darwin-sandbox,local
-
-common:windows --strategy=TestRunner=local
-
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -59,7 +59,7 @@ jobs:
        working-directory: codex-rs
    steps:
      - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90
        with:
          components: rustfmt
      - name: cargo fmt
@@ -77,7 +77,7 @@ jobs:
        working-directory: codex-rs
    steps:
      - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90
      - uses: taiki-e/install-action@44c6d64aa62cd779e873306675c7a58e86d6d532 # v2
        with:
          tool: cargo-shear
@@ -88,7 +88,7 @@ jobs:
  # --- CI to validate on different os/targets --------------------------------
  lint_build:
    name: Lint/Build — ${{ matrix.runner }} - ${{ matrix.target }}${{ matrix.profile == 'release' && ' (release)' || '' }}
-    runs-on: ${{ matrix.runs_on || matrix.runner }}
+    runs-on: ${{ matrix.runner }}
    timeout-minutes: 30
    needs: changed
    # Keep job-level if to avoid spinning up runners when not needed
@@ -106,78 +106,51 @@ jobs:
      fail-fast: false
      matrix:
        include:
-          - runner: macos-15-xlarge
+          - runner: macos-14
            target: aarch64-apple-darwin
            profile: dev
-          - runner: macos-15-xlarge
+          - runner: macos-14
            target: x86_64-apple-darwin
            profile: dev
          - runner: ubuntu-24.04
            target: x86_64-unknown-linux-musl
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-x64
          - runner: ubuntu-24.04
            target: x86_64-unknown-linux-gnu
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-x64
          - runner: ubuntu-24.04-arm
            target: aarch64-unknown-linux-musl
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-arm64
          - runner: ubuntu-24.04-arm
            target: aarch64-unknown-linux-gnu
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-arm64
-          - runner: windows-x64
+          - runner: windows-latest
            target: x86_64-pc-windows-msvc
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-windows-x64
-          - runner: windows-arm64
+          - runner: windows-11-arm
            target: aarch64-pc-windows-msvc
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-windows-arm64

          # Also run representative release builds on Mac and Linux because
          # there could be release-only build errors we want to catch.
          # Hopefully this also pre-populates the build cache to speed up
          # releases.
-          - runner: macos-15-xlarge
+          - runner: macos-14
            target: aarch64-apple-darwin
            profile: release
          - runner: ubuntu-24.04
            target: x86_64-unknown-linux-musl
            profile: release
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-x64
-          - runner: windows-x64
+          - runner: windows-latest
            target: x86_64-pc-windows-msvc
            profile: release
-            runs_on:
-              group: codex-runners
-              labels: codex-windows-x64
-          - runner: windows-arm64
+          - runner: windows-11-arm
            target: aarch64-pc-windows-msvc
            profile: release
-            runs_on:
-              group: codex-runners
-              labels: codex-windows-arm64

    steps:
      - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90
        with:
          targets: ${{ matrix.target }}
          components: clippy
@@ -363,7 +336,7 @@ jobs:

  tests:
    name: Tests — ${{ matrix.runner }} - ${{ matrix.target }}
-    runs-on: ${{ matrix.runs_on || matrix.runner }}
+    runs-on: ${{ matrix.runner }}
    timeout-minutes: 30
    needs: changed
    if: ${{ needs.changed.outputs.codex == 'true' || needs.changed.outputs.workflows == 'true' || github.event_name == 'push' }}
@@ -380,43 +353,46 @@ jobs:
      fail-fast: false
      matrix:
        include:
-          - runner: macos-15-xlarge
+          - runner: macos-14
            target: aarch64-apple-darwin
            profile: dev
          - runner: ubuntu-24.04
            target: x86_64-unknown-linux-gnu
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-x64
          - runner: ubuntu-24.04-arm
            target: aarch64-unknown-linux-gnu
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-linux-arm64
-          - runner: windows-x64
+          - runner: windows-latest
            target: x86_64-pc-windows-msvc
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-windows-x64
-          - runner: windows-arm64
+          - runner: windows-11-arm
            target: aarch64-pc-windows-msvc
            profile: dev
-            runs_on:
-              group: codex-runners
-              labels: codex-windows-arm64

    steps:
      - uses: actions/checkout@v6

+      # We have been running out of space when running this job on Linux for
+      # x86_64-unknown-linux-gnu, so remove some unnecessary dependencies.
+      - name: Remove unnecessary dependencies to save space
+        if: ${{ startsWith(matrix.runner, 'ubuntu') }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          sudo rm -rf \
+            /usr/local/lib/android \
+            /usr/share/dotnet \
+            /usr/local/share/boost \
+            /usr/local/lib/node_modules \
+            /opt/ghc
+          sudo apt-get remove -y docker.io docker-compose podman buildah
+
      # Some integration tests rely on DotSlash being installed.
      # See https://github.com/openai/codex/pull/7617.
      - name: Install DotSlash
        uses: facebook/install-dotslash@v2

-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90
        with:
          targets: ${{ matrix.target }}

--- a/.github/workflows/rust-release.yml
+++ b/.github/workflows/rust-release.yml
@@ -49,7 +49,7 @@ jobs:
    needs: tag-check
    name: Build - ${{ matrix.runner }} - ${{ matrix.target }}
    runs-on: ${{ matrix.runner }}
-    timeout-minutes: 60
+    timeout-minutes: 30
    permissions:
      contents: read
      id-token: write
@@ -80,7 +80,7 @@ jobs:

    steps:
      - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90
        with:
          targets: ${{ matrix.target }}

--- a/.github/workflows/sdk.yml
+++ b/.github/workflows/sdk.yml
@@ -24,7 +24,7 @@ jobs:
          node-version: 22
          cache: pnpm

-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90

      - name: build codex
        run: cargo build --bin codex
--- a/.github/workflows/shell-tool-mcp.yml
+++ b/.github/workflows/shell-tool-mcp.yml
@@ -93,7 +93,7 @@ jobs:
      - name: Checkout repository
        uses: actions/checkout@v6

-      - uses: dtolnay/rust-toolchain@1.92
+      - uses: dtolnay/rust-toolchain@1.90
        with:
          targets: ${{ matrix.target }}

@@ -198,7 +198,7 @@ jobs:
        shell: bash
        run: |
          set -euo pipefail
-          git clone --depth 1 https://github.com/bolinfest/bash /tmp/bash
+          git clone --depth 1 https://github.com/bminor/bash /tmp/bash
          cd /tmp/bash
          git fetch --depth 1 origin a8a1c2fac029404d3f42cd39f5a20f24b6e4fe4b
          git checkout a8a1c2fac029404d3f42cd39f5a20f24b6e4fe4b
@@ -240,7 +240,7 @@ jobs:
        shell: bash
        run: |
          set -euo pipefail
-          git clone --depth 1 https://github.com/bolinfest/bash /tmp/bash
+          git clone --depth 1 https://github.com/bminor/bash /tmp/bash
          cd /tmp/bash
          git fetch --depth 1 origin a8a1c2fac029404d3f42cd39f5a20f24b6e4fe4b
          git checkout a8a1c2fac029404d3f42cd39f5a20f24b6e4fe4b
--- a/.gitignore
+++ b/.gitignore
@@ -9,7 +9,6 @@ node_modules

 # build
 dist/
-bazel-*
 build/
 out/
 storybook-static/
--- a/.markdownlint-cli2.yaml
+++ b/.markdownlint-cli2.yaml
@@ -1,6 +0,0 @@
-config:
-  MD013:
-    line_length: 100
-
-globs:
-  - "docs/tui-chat-composer.md"
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -13,12 +13,12 @@ In the codex-rs folder where the rust code lives:
 - Use method references over closures when possible per https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_for_method_calls
 - When writing tests, prefer comparing the equality of entire objects over fields one by one.
 - When making a change that adds or changes an API, ensure that the documentation in the `docs/` folder is up to date if applicable.
- If you change `ConfigToml` or nested config types, run `just write-config-schema` to update `codex-rs/core/config.schema.json`.

 Run `just fmt` (in `codex-rs` directory) automatically after making Rust code changes; do not ask for approval to run it. Before finalizing a change to `codex-rs`, run `just fix -p <project>` (in `codex-rs` directory) to fix any linter issues in the code. Prefer scoping with `-p` to avoid slow workspace‑wide Clippy builds; only run `just fix` without `-p` if you changed shared crates. Additionally, run the tests:

 1. Run the test for the specific project that was changed. For example, if changes were made in `codex-rs/tui`, run `cargo test -p codex-tui`.
-2. Once those pass, if any changes were made in common, core, or protocol, run the complete test suite with `cargo test --all-features`. project-specific or individual tests can be run without asking the user, but do ask the user before running the complete test suite.
+2. Once those pass, if any changes were made in common, core, or protocol, run the complete test suite with `cargo test --all-features`.
+   When running interactively, ask the user before running `just fix` to finalize. `just fmt` does not require approval. project-specific or individual tests can be run without asking the user, but do ask the user before running the complete test suite.

 ## TUI style conventions

@@ -77,11 +77,11 @@ If you don’t have the tool:
 - Prefer deep equals comparisons whenever possible. Perform `assert_eq!()` on entire objects, rather than individual fields.
 - Avoid mutating process environment in tests; prefer passing environment-derived flags or dependencies from above.

-### Spawning workspace binaries in tests (Cargo vs Bazel)
+### Spawning workspace binaries in tests (Cargo vs Buck2)

 - Prefer `codex_utils_cargo_bin::cargo_bin("...")` over `assert_cmd::Command::cargo_bin(...)` or `escargot` when tests need to spawn first-party binaries.
-  - Under Bazel, binaries and resources may live under runfiles; use `codex_utils_cargo_bin::cargo_bin` to resolve absolute paths that remain stable after `chdir`.
- When locating fixture files or test resources under Bazel, avoid `env!("CARGO_MANIFEST_DIR")`. Prefer `codex_utils_cargo_bin::find_resource!` so paths resolve correctly under both Cargo and Bazel runfiles.
+  - Under Buck2, `CARGO_BIN_EXE_*` may be project-relative (e.g. `buck-out/...`), which breaks if a test changes its working directory. `codex_utils_cargo_bin::cargo_bin` resolves to an absolute path first.
+- When locating fixture files under Buck2, avoid `env!("CARGO_MANIFEST_DIR")` (Buck codegen sets it to `"."`). Prefer deriving paths from `codex_utils_cargo_bin::buck_project_root()` when needed.

 ### Integration tests (core)

--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -1,19 +0,0 @@
-# We mark the local platform as glibc-compatible so that rust can grab a toolchain for us.
-# TODO(zbarsky): Upstream a better libc constraint into rules_rust.
-# We only enable this on linux though for sanity, and because it breaks remote execution.
-platform(
-    name = "local",
-    constraint_values = [
-        "@toolchains_llvm_bootstrapped//constraints/libc:gnu.2.28",
-    ],
-    parents = [
-        "@platforms//host",
-    ],
-)
-
-alias(
-    name = "rbe",
-    actual = "@rbe_platform",
-)
-
-exports_files(["AGENTS.md"])
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -1,128 +0,0 @@
-bazel_dep(name = "platforms", version = "1.0.0")
-bazel_dep(name = "toolchains_llvm_bootstrapped", version = "0.3.1")
-archive_override(
-    module_name = "toolchains_llvm_bootstrapped",
-    integrity = "sha256-9ks21bgEqbQWmwUIvqeLA64+Jk6o4ZVjC8KxjVa2Vw8=",
-    strip_prefix = "toolchains_llvm_bootstrapped-e3775e66a7b6d287c705ca0cd24497ef4a77c503",
-    urls = ["https://github.com/cerisier/toolchains_llvm_bootstrapped/archive/e3775e66a7b6d287c705ca0cd24497ef4a77c503/master.tar.gz"],
-    patch_strip = 1,
-    patches = [
-        "//patches:llvm_toolchain_archive_params.patch",
-    ],
-)
-
-osx = use_extension("@toolchains_llvm_bootstrapped//toolchain/extension:osx.bzl", "osx")
-osx.framework(name = "ApplicationServices")
-osx.framework(name = "AppKit")
-osx.framework(name = "ColorSync")
-osx.framework(name = "CoreFoundation")
-osx.framework(name = "CoreGraphics")
-osx.framework(name = "CoreServices")
-osx.framework(name = "CoreText")
-osx.framework(name = "CFNetwork")
-osx.framework(name = "Foundation")
-osx.framework(name = "ImageIO")
-osx.framework(name = "Kernel")
-osx.framework(name = "OSLog")
-osx.framework(name = "Security")
-osx.framework(name = "SystemConfiguration")
-
-register_toolchains(
-    "@toolchains_llvm_bootstrapped//toolchain:all",
-)
-
-bazel_dep(name = "rules_cc", version = "0.2.16")
-bazel_dep(name = "rules_platform", version = "0.1.0")
-bazel_dep(name = "rules_rust", version = "0.68.1")
-single_version_override(
-    module_name = "rules_rust",
-    patch_strip = 1,
-    patches = [
-        "//patches:rules_rust.patch",
-        "//patches:rules_rust_windows_gnu.patch",
-        "//patches:rules_rust_musl.patch",
-    ],
-)
-
-RUST_TRIPLES = [
-    "aarch64-unknown-linux-musl",
-    "aarch64-apple-darwin",
-    "aarch64-pc-windows-gnullvm",
-    "x86_64-unknown-linux-musl",
-    "x86_64-apple-darwin",
-    "x86_64-pc-windows-gnullvm",
-]
-
-rust = use_extension("@rules_rust//rust:extensions.bzl", "rust")
-rust.toolchain(
-    edition = "2024",
-    extra_target_triples = RUST_TRIPLES,
-    versions = ["1.90.0"],
-)
-use_repo(rust, "rust_toolchains")
-
-register_toolchains("@rust_toolchains//:all")
-
-bazel_dep(name = "rules_rs", version = "0.0.23")
-
-crate = use_extension("@rules_rs//rs:extensions.bzl", "crate")
-crate.from_cargo(
-    cargo_lock = "//codex-rs:Cargo.lock",
-    cargo_toml = "//codex-rs:Cargo.toml",
-    platform_triples = RUST_TRIPLES,
-)
-
-bazel_dep(name = "openssl", version = "3.5.4.bcr.0")
-
-crate.annotation(
-    build_script_data = [
-        "@openssl//:gen_dir",
-    ],
-    build_script_env = {
-        "OPENSSL_DIR": "$(execpath @openssl//:gen_dir)",
-        "OPENSSL_NO_VENDOR": "1",
-        "OPENSSL_STATIC": "1",
-    },
-    crate = "openssl-sys",
-    data = ["@openssl//:gen_dir"],
-)
-
-inject_repo(crate, "openssl")
-
-# Fix readme inclusions
-crate.annotation(
-    crate = "windows-link",
-    patch_args = ["-p1"],
-    patches = [
-        "//patches:windows-link.patch"
-    ],
-)
-
-WINDOWS_IMPORT_LIB = """
-load("@rules_cc//cc:defs.bzl", "cc_import")
-
-cc_import(
-    name = "windows_import_lib",
-    static_library = glob(["lib/*.a"])[0],
-)
-"""
-
-crate.annotation(
-    additive_build_file_content = WINDOWS_IMPORT_LIB,
-    crate = "windows_x86_64_gnullvm",
-    gen_build_script = "off",
-    deps = [":windows_import_lib"],
-)
-crate.annotation(
-    additive_build_file_content = WINDOWS_IMPORT_LIB,
-    crate = "windows_aarch64_gnullvm",
-    gen_build_script = "off",
-    deps = [":windows_import_lib"],
-)
-use_repo(crate, "crates")
-
-rbe_platform_repository = use_repo_rule("//:rbe.bzl", "rbe_platform_repository")
-
-rbe_platform_repository(
-    name = "rbe_platform",
-)
--- a/MODULE.bazel.lock
+++ b/MODULE.bazel.lock
--- a/announcement_tip.toml
+++ b/announcement_tip.toml
@@ -10,7 +10,6 @@ from_date = "2024-10-01"
 to_date = "2024-10-15"
 target_app = "cli"

-# Test announcement only for local build version until 2026-01-10 excluded (past)
 [[announcements]]
 content = "This is a test announcement"
 version_regex = "^0\\.0\\.0$"
--- a/codex-cli/bin/codex.js
+++ b/codex-cli/bin/codex.js
@@ -95,6 +95,7 @@ function detectPackageManager() {
    return "bun";
  }

+
  if (
    __dirname.includes(".bun/install/global") ||
    __dirname.includes(".bun\\install\\global")
--- a/codex-rs/BUILD.bazel
+++ b/codex-rs/BUILD.bazel
@@ -1 +0,0 @@
-
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -367,12 +367,9 @@ dependencies = [

 [[package]]
 name = "arc-swap"
-version = "1.8.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51d03449bb8ca2cc2ef70869af31463d1ae5ccc8fa3e334b307203fbf815207e"
-dependencies = [
- "rustversion",
-]
+checksum = "69f7f8c3906b62b754cd5326047894316021dcfe5a194c8ea52bdd94934a3457"

 [[package]]
 name = "arrayvec"
@@ -822,8 +819,6 @@ version = "1.2.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "deec109607ca693028562ed836a5f1c4b8bd77755c4e132fc5ce11b0b6211ae7"
 dependencies = [
- "jobserver",
- "libc",
 "shlex",
 ]

@@ -864,9 +859,9 @@ dependencies = [

 [[package]]
 name = "chrono"
-version = "0.4.43"
+version = "0.4.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fac4744fb15ae8337dc853fee7fb3f4e48c0fbaa23d0afe49c447b4fab126118"
+checksum = "145052bdd345b87320e369255277e3fb5152762ad123a901ef5c262dd38fe8d2"
 dependencies = [
 "iana-time-zone",
 "js-sys",
@@ -894,9 +889,9 @@ dependencies = [

 [[package]]
 name = "clap"
-version = "4.5.54"
+version = "4.5.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6e6ff9dcd79cff5cd969a17a545d79e84ab086e444102a591e288a8aa3ce394"
+checksum = "c9e340e012a1bf4935f5282ed1436d1489548e8f72308207ea5df0e23d2d03f8"
 dependencies = [
 "clap_builder",
 "clap_derive",
@@ -904,9 +899,9 @@ dependencies = [

 [[package]]
 name = "clap_builder"
-version = "4.5.54"
+version = "4.5.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa42cf4d2b7a41bc8f663a7cab4031ebafa1bf3875705bfaf8466dc60ab52c00"
+checksum = "d76b5d13eaa18c901fd2f7fca939fefe3a0727a953561fefdf3b2922b8569d00"
 dependencies = [
 "anstream",
 "anstyle",
@@ -987,10 +982,8 @@ dependencies = [
 "thiserror 2.0.17",
 "tokio",
 "tokio-test",
- "tokio-tungstenite",
 "tokio-util",
 "tracing",
- "url",
 "wiremock",
 ]

@@ -1134,7 +1127,6 @@ dependencies = [
 "codex-common",
 "codex-core",
 "codex-git",
- "codex-utils-cargo-bin",
 "serde",
 "serde_json",
 "tempfile",
@@ -1161,6 +1153,7 @@ dependencies = [
 "codex-execpolicy",
 "codex-login",
 "codex-mcp-server",
+ "codex-process-hardening",
 "codex-protocol",
 "codex-responses-api-proxy",
 "codex-rmcp-client",
@@ -1170,6 +1163,7 @@ dependencies = [
 "codex-utils-absolute-path",
 "codex-utils-cargo-bin",
 "codex-windows-sandbox",
+ "ctor 0.5.0",
 "libc",
 "owo-colors",
 "predicates",
@@ -1203,7 +1197,6 @@ dependencies = [
 "tracing",
 "tracing-opentelemetry",
 "tracing-subscriber",
- "zstd",
 ]

 [[package]]
@@ -1278,7 +1271,6 @@ dependencies = [
 "base64",
 "chardetng",
 "chrono",
- "clap",
 "codex-api",
 "codex-app-server-protocol",
 "codex-apply-patch",
@@ -1301,18 +1293,18 @@ dependencies = [
 "codex-windows-sandbox",
 "core-foundation 0.9.4",
 "core_test_support",
- "ctor 0.6.3",
+ "ctor 0.5.0",
 "dirs",
 "dunce",
 "encoding_rs",
 "env-flags",
+ "escargot",
 "eventsource-stream",
 "futures",
 "http 1.3.1",
 "image",
 "include_dir",
 "indexmap 2.12.0",
- "indoc",
 "keyring",
 "landlock",
 "libc",
@@ -1327,7 +1319,6 @@ dependencies = [
 "regex",
 "regex-lite",
 "reqwest",
- "schemars 0.8.22",
 "seccompiler",
 "serde",
 "serde_json",
@@ -1357,19 +1348,6 @@ dependencies = [
 "which",
 "wildmatch",
 "wiremock",
- "zstd",
-]
-
-[[package]]
-name = "codex-debug-client"
-version = "0.0.0"
-dependencies = [
- "anyhow",
- "clap",
- "codex-app-server-protocol",
- "pretty_assertions",
- "serde",
- "serde_json",
 ]

 [[package]]
@@ -1527,7 +1505,6 @@ dependencies = [
 "codex-utils-absolute-path",
 "landlock",
 "libc",
- "pretty_assertions",
 "seccompiler",
 "tempfile",
 "tokio",
@@ -1605,9 +1582,7 @@ dependencies = [
 "bytes",
 "codex-core",
 "futures",
- "pretty_assertions",
 "reqwest",
- "semver",
 "serde_json",
 "tokio",
 "tracing",
@@ -1630,12 +1605,10 @@ dependencies = [
 "opentelemetry-otlp",
 "opentelemetry-semantic-conventions",
 "opentelemetry_sdk",
- "pretty_assertions",
 "reqwest",
 "serde",
 "serde_json",
 "strum_macros 0.27.2",
- "thiserror 2.0.17",
 "tokio",
 "tracing",
 "tracing-opentelemetry",
@@ -1684,7 +1657,7 @@ dependencies = [
 "anyhow",
 "clap",
 "codex-process-hardening",
- "ctor 0.6.3",
+ "ctor 0.5.0",
 "libc",
 "reqwest",
 "serde",
@@ -1710,7 +1683,6 @@ dependencies = [
 "pretty_assertions",
 "reqwest",
 "rmcp",
- "schemars 0.8.22",
 "serde",
 "serde_json",
 "serial_test",
@@ -1750,7 +1722,6 @@ dependencies = [
 "codex-app-server-protocol",
 "codex-arg0",
 "codex-backend-client",
- "codex-cli",
 "codex-common",
 "codex-core",
 "codex-feedback",
@@ -1758,8 +1729,6 @@ dependencies = [
 "codex-login",
 "codex-protocol",
 "codex-utils-absolute-path",
- "codex-utils-cargo-bin",
- "codex-utils-pty",
 "codex-windows-sandbox",
 "color-eyre",
 "crossterm",
@@ -1825,7 +1794,6 @@ dependencies = [
 "codex-app-server-protocol",
 "codex-arg0",
 "codex-backend-client",
- "codex-cli",
 "codex-common",
 "codex-core",
 "codex-feedback",
@@ -1834,8 +1802,6 @@ dependencies = [
 "codex-protocol",
 "codex-tui",
 "codex-utils-absolute-path",
- "codex-utils-cargo-bin",
- "codex-utils-pty",
 "codex-windows-sandbox",
 "color-eyre",
 "crossterm",
@@ -1888,9 +1854,7 @@ dependencies = [
 name = "codex-utils-absolute-path"
 version = "0.0.0"
 dependencies = [
- "dirs",
 "path-absolutize",
- "pretty_assertions",
 "schemars 0.8.22",
 "serde",
 "serde_json",
@@ -1912,7 +1876,6 @@ name = "codex-utils-cargo-bin"
 version = "0.0.0"
 dependencies = [
 "assert_cmd",
- "path-absolutize",
 "thiserror 2.0.17",
 ]

@@ -1944,10 +1907,8 @@ dependencies = [
 "anyhow",
 "filedescriptor",
 "lazy_static",
- "libc",
 "log",
 "portable-pty",
- "pretty_assertions",
 "shared_library",
 "tokio",
 "winapi",
@@ -2148,7 +2109,6 @@ dependencies = [
 "codex-protocol",
 "codex-utils-absolute-path",
 "codex-utils-cargo-bin",
- "futures",
 "notify",
 "pretty_assertions",
 "regex-lite",
@@ -2157,7 +2117,6 @@ dependencies = [
 "shlex",
 "tempfile",
 "tokio",
- "tokio-tungstenite",
 "walkdir",
 "wiremock",
 ]
@@ -2267,9 +2226,9 @@ dependencies = [

 [[package]]
 name = "ctor"
-version = "0.6.3"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "424e0138278faeb2b401f174ad17e715c829512d74f3d1e81eb43365c2e0590e"
+checksum = "67773048316103656a637612c4a62477603b777d91d9c62ff2290f9cde178fdb"
 dependencies = [
 "ctor-proc-macro",
 "dtor",
@@ -2277,9 +2236,9 @@ dependencies = [

 [[package]]
 name = "ctor-proc-macro"
-version = "0.0.7"
+version = "0.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52560adf09603e58c9a7ee1fe1dcb95a16927b17c127f0ac02d6e768a0e25bc1"
+checksum = "e2931af7e13dc045d8e9d26afccc6fa115d64e115c9c84b1166288b46f6782c2"

 [[package]]
 name = "darling"
@@ -2385,12 +2344,6 @@ dependencies = [
 "syn 2.0.104",
 ]

-[[package]]
-name = "data-encoding"
-version = "2.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7a1e2f27636f116493b8b860f5546edb47c8d8f8ea73e1d2a20be88e28d1fea"
-
 [[package]]
 name = "dbus"
 version = "0.9.9"
@@ -2793,12 +2746,6 @@ dependencies = [
 "regex",
 ]

-[[package]]
-name = "env_home"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7f84e12ccf0a7ddc17a6c41c93326024c42920d7ee630d04950e6926645c0fe"
-
 [[package]]
 name = "env_logger"
 version = "0.11.8"
@@ -2843,6 +2790,17 @@ version = "3.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dea2df4cf52843e0452895c455a1a2cfbb842a1e7329671acf418fdc53ed4c59"

+[[package]]
+name = "escargot"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11c3aea32bc97b500c9ca6a72b768a26e558264303d101d3409cf6d57a9ed0cf"
+dependencies = [
+ "log",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "event-listener"
 version = "5.4.0"
@@ -3457,7 +3415,7 @@ dependencies = [
 "tokio",
 "tokio-rustls",
 "tower-service",
- "webpki-roots 1.0.2",
+ "webpki-roots",
 ]

 [[package]]
@@ -3507,7 +3465,7 @@ dependencies = [
 "libc",
 "percent-encoding",
 "pin-project-lite",
- "socket2 0.5.10",
+ "socket2 0.6.1",
 "system-configuration",
 "tokio",
 "tower-service",
@@ -3966,16 +3924,6 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"

-[[package]]
-name = "jobserver"
-version = "0.1.34"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9afb3de4395d6b3e67a780b6de64b51c978ecf11cb9a462c66be7d4ca9039d33"
-dependencies = [
- "getrandom 0.3.3",
- "libc",
-]
-
 [[package]]
 name = "js-sys"
 version = "0.3.77"
@@ -4165,9 +4113,9 @@ dependencies = [

 [[package]]
 name = "log"
-version = "0.4.29"
+version = "0.4.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
+checksum = "34080505efa8e45a4b816c349525ebe327ceaa8559756f0356cba97ef3bf7432"

 [[package]]
 name = "logos"
@@ -5344,7 +5292,7 @@ dependencies = [
 "quinn-udp",
 "rustc-hash",
 "rustls",
- "socket2 0.5.10",
+ "socket2 0.6.1",
 "thiserror 2.0.17",
 "tokio",
 "tracing",
@@ -5381,7 +5329,7 @@ dependencies = [
 "cfg_aliases 0.2.1",
 "libc",
 "once_cell",
- "socket2 0.5.10",
+ "socket2 0.6.1",
 "tracing",
 "windows-sys 0.60.2",
 ]
@@ -5666,7 +5614,7 @@ dependencies = [
 "wasm-bindgen-futures",
 "wasm-streams",
 "web-sys",
- "webpki-roots 1.0.2",
+ "webpki-roots",
 ]

 [[package]]
@@ -7076,9 +7024,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"

 [[package]]
 name = "tokio"
-version = "1.49.0"
+version = "1.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72a2903cd7736441aac9df9d7688bd0ce48edccaadf181c3b90be801e81d3d86"
+checksum = "ff360e02eab121e0bc37a2d3b4d4dc622e6eda3a8e5253d5435ecf5bd4c68408"
 dependencies = [
 "bytes",
 "libc",
@@ -7147,27 +7095,11 @@ dependencies = [
 "tokio-stream",
 ]

-[[package]]
-name = "tokio-tungstenite"
-version = "0.28.0"
-source = "git+https://github.com/JakkuSakura/tokio-tungstenite?rev=2ae536b0de793f3ddf31fc2f22d445bf1ef2023d#2ae536b0de793f3ddf31fc2f22d445bf1ef2023d"
-dependencies = [
- "futures-util",
- "log",
- "rustls",
- "rustls-native-certs",
- "rustls-pki-types",
- "tokio",
- "tokio-rustls",
- "tungstenite",
- "webpki-roots 0.26.11",
-]
-
 [[package]]
 name = "tokio-util"
-version = "0.7.18"
+version = "0.7.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ae9cec805b01e8fc3fd2fe289f89149a9b66dd16786abd8b19cfa7b48cb0098"
+checksum = "14307c986784f72ef81c89db7d9e28d6ac26d16213b109ea501696195e6e3ce5"
 dependencies = [
 "bytes",
 "futures-core",
@@ -7525,9 +7457,9 @@ checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"

 [[package]]
 name = "ts-rs"
-version = "11.1.0"
+version = "11.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4994acea2522cd2b3b85c1d9529a55991e3ad5e25cdcd3de9d505972c4379424"
+checksum = "6ef1b7a6d914a34127ed8e1fa927eb7088903787bcded4fa3eef8f85ee1568be"
 dependencies = [
 "serde_json",
 "thiserror 2.0.17",
@@ -7537,9 +7469,9 @@ dependencies = [

 [[package]]
 name = "ts-rs-macros"
-version = "11.1.0"
+version = "11.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee6ff59666c9cbaec3533964505d39154dc4e0a56151fdea30a09ed0301f62e2"
+checksum = "e9d4ed7b4c18cc150a6a0a1e9ea1ecfa688791220781af6e119f9599a8502a0a"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -7549,32 +7481,14 @@ dependencies = [

 [[package]]
 name = "tui-scrollbar"
-version = "0.2.2"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4267311b5c7999a996ea94939b6d2b1b44a9e5cc11e76cbbb6dcca4c281df4"
+checksum = "c42613099915b2e30e9f144670666e858e2538366f77742e1cf1c2f230efcacd"
 dependencies = [
 "document-features",
 "ratatui-core",
 ]

-[[package]]
-name = "tungstenite"
-version = "0.28.0"
-source = "git+https://github.com/JakkuSakura/tungstenite-rs?rev=f514de8644821113e5d18a027d6d28a5c8cc0a6e#f514de8644821113e5d18a027d6d28a5c8cc0a6e"
-dependencies = [
- "bytes",
- "data-encoding",
- "http 1.3.1",
- "httparse",
- "log",
- "rand 0.9.2",
- "rustls",
- "rustls-pki-types",
- "sha1",
- "thiserror 2.0.17",
- "utf-8",
-]
-
 [[package]]
 name = "typenum"
 version = "1.18.0"
@@ -8042,15 +7956,6 @@ dependencies = [
 "rustls-pki-types",
 ]

-[[package]]
-name = "webpki-roots"
-version = "0.26.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9"
-dependencies = [
- "webpki-roots 1.0.2",
-]
-
 [[package]]
 name = "webpki-roots"
 version = "1.0.2"
@@ -8068,12 +7973,13 @@ checksum = "a751b3277700db47d3e574514de2eced5e54dc8a5436a3bf7a0b248b2cee16f3"

 [[package]]
 name = "which"
-version = "8.0.0"
+version = "6.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3fabb953106c3c8eea8306e4393700d7657561cb43122571b172bbfb7c7ba1d"
+checksum = "b4ee928febd44d98f2f459a4a79bd4d928591333a494a10a868418ac1b39cf1f"
 dependencies = [
- "env_home",
- "rustix 1.0.8",
+ "either",
+ "home",
+ "rustix 0.38.44",
 "winsafe",
 ]

@@ -8903,34 +8809,6 @@ dependencies = [
 "syn 2.0.104",
 ]

-[[package]]
-name = "zstd"
-version = "0.13.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e91ee311a569c327171651566e07972200e76fcfe2242a4fa446149a3881c08a"
-dependencies = [
- "zstd-safe",
-]
-
-[[package]]
-name = "zstd-safe"
-version = "7.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f49c4d5f0abb602a93fb8736af2a4f4dd9512e36f7f570d66e65ff867ed3b9d"
-dependencies = [
- "zstd-sys",
-]
-
-[[package]]
-name = "zstd-sys"
-version = "2.0.16+zstd.1.5.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91e19ebc2adc8f83e43039e79776e3fda8ca919132d68a1fed6a5faca2683748"
-dependencies = [
- "cc",
- "pkg-config",
-]
-
 [[package]]
 name = "zune-core"
 version = "0.4.12"
--- a/codex-rs/Cargo.toml
+++ b/codex-rs/Cargo.toml
@@ -6,7 +6,6 @@ members = [
    "app-server",
    "app-server-protocol",
    "app-server-test-client",
-    "debug-client",
    "apply-patch",
    "arg0",
    "feedback",
@@ -71,7 +70,6 @@ codex-arg0 = { path = "arg0" }
 codex-async-utils = { path = "async-utils" }
 codex-backend-client = { path = "backend-client" }
 codex-chatgpt = { path = "chatgpt" }
-codex-cli = { path = "cli"}
 codex-client = { path = "codex-client" }
 codex-common = { path = "common" }
 codex-core = { path = "core" }
@@ -122,12 +120,12 @@ axum = { version = "0.8", default-features = false }
 base64 = "0.22.1"
 bytes = "1.10.1"
 chardetng = "0.1.17"
-chrono = "0.4.43"
+chrono = "0.4.42"
 clap = "4"
 clap_complete = "4"
 color-eyre = "0.6.3"
 crossterm = "0.28.1"
-ctor = "0.6.3"
+ctor = "0.5.0"
 derive_more = "2"
 diffy = "0.4.2"
 dirs = "6"
@@ -136,6 +134,7 @@ dunce = "1.0.4"
 encoding_rs = "0.8.35"
 env-flags = "0.1.1"
 env_logger = "0.11.5"
+escargot = "0.5"
 eventsource-stream = "0.2.3"
 futures = { version = "0.3", default-features = false }
 http = "1.3.1"
@@ -143,7 +142,6 @@ icu_decimal = "2.1"
 icu_locale_core = "2.1"
 icu_provider = { version = "2.1", features = ["sync"] }
 ignore = "0.4.23"
-indoc = "2.0"
 image = { version = "^0.25.9", default-features = false }
 include_dir = "0.7.4"
 indexmap = "2.12.0"
@@ -182,7 +180,7 @@ ratatui-core = "0.1.0"
 ratatui-macros = "0.6.0"
 regex = "1.12.2"
 regex-lite = "0.1.8"
-reqwest = { version = "0.12", features = ["rustls-tls-webpki-roots", "rustls-tls-native-roots"] }
+reqwest = "0.12"
 rmcp = { version = "0.12.0", default-features = false }
 schemars = "0.8.22"
 seccompiler = "0.5.0"
@@ -194,7 +192,6 @@ serde_yaml = "0.9"
 serial_test = "3.2.0"
 sha1 = "0.10.6"
 sha2 = "0.10"
-semver = "1.0"
 shlex = "1.3.0"
 similar = "2.7.0"
 socket2 = "0.6.1"
@@ -212,8 +209,7 @@ tiny_http = "0.12"
 tokio = "1"
 tokio-stream = "0.1.18"
 tokio-test = "0.4"
-tokio-tungstenite = { version = "0.28.0", features = ["rustls-tls-webpki-roots", "rustls-tls-native-roots", "proxy"] }
-tokio-util = "0.7.18"
+tokio-util = "0.7.16"
 toml = "0.9.5"
 toml_edit = "0.24.0"
 tracing = "0.1.43"
@@ -222,10 +218,9 @@ tracing-subscriber = "0.3.22"
 tracing-test = "0.2.5"
 tree-sitter = "0.25.10"
 tree-sitter-bash = "0.25"
-zstd = "0.13"
 tree-sitter-highlight = "0.25.10"
 ts-rs = "11"
-tui-scrollbar = "0.2.2"
+tui-scrollbar = "0.2.1"
 uds_windows = "1.1.0"
 unicode-segmentation = "1.12.0"
 unicode-width = "0.2"
@@ -235,7 +230,7 @@ uuid = "1"
 vt100 = "0.16.2"
 walkdir = "2.5.0"
 webbrowser = "1.0"
-which = "8"
+which = "6"
 wildmatch = "2.6.1"

 wiremock = "0.6"
@@ -303,10 +298,6 @@ opt-level = 0
 # ratatui = { path = "../../ratatui" }
 crossterm = { git = "https://github.com/nornagon/crossterm", branch = "nornagon/color-query" }
 ratatui = { git = "https://github.com/nornagon/ratatui", branch = "nornagon-v0.29.0-patch" }
-tokio-tungstenite = { git = "https://github.com/JakkuSakura/tokio-tungstenite", rev = "2ae536b0de793f3ddf31fc2f22d445bf1ef2023d" }

 # Uncomment to debug local changes.
 # rmcp = { path = "../../rust-sdk/crates/rmcp" }
-
-[patch."ssh://git@github.com/JakkuSakura/tungstenite-rs.git"]
-tungstenite = { git = "https://github.com/JakkuSakura/tungstenite-rs", rev = "f514de8644821113e5d18a027d6d28a5c8cc0a6e" }
--- a/codex-rs/ansi-escape/BUILD.bazel
+++ b/codex-rs/ansi-escape/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "ansi-escape",
-    crate_name = "codex_ansi_escape",
-)
--- a/codex-rs/app-server-protocol/BUILD.bazel
+++ b/codex-rs/app-server-protocol/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "app-server-protocol",
-    crate_name = "codex_app_server_protocol",
-)
--- a/codex-rs/app-server-protocol/src/protocol/common.rs
+++ b/codex-rs/app-server-protocol/src/protocol/common.rs
@@ -109,10 +109,6 @@ client_request_definitions! {
        params: v2::ThreadResumeParams,
        response: v2::ThreadResumeResponse,
    },
-    ThreadFork => "thread/fork" {
-        params: v2::ThreadForkParams,
-        response: v2::ThreadForkResponse,
-    },
    ThreadArchive => "thread/archive" {
        params: v2::ThreadArchiveParams,
        response: v2::ThreadArchiveResponse,
@@ -125,18 +121,10 @@ client_request_definitions! {
        params: v2::ThreadListParams,
        response: v2::ThreadListResponse,
    },
-    ThreadLoadedList => "thread/loaded/list" {
-        params: v2::ThreadLoadedListParams,
-        response: v2::ThreadLoadedListResponse,
-    },
    SkillsList => "skills/list" {
        params: v2::SkillsListParams,
        response: v2::SkillsListResponse,
    },
-    SkillsConfigWrite => "skills/config/write" {
-        params: v2::SkillsConfigWriteParams,
-        response: v2::SkillsConfigWriteResponse,
-    },
    TurnStart => "turn/start" {
        params: v2::TurnStartParams,
        response: v2::TurnStartResponse,
@@ -154,22 +142,12 @@ client_request_definitions! {
        params: v2::ModelListParams,
        response: v2::ModelListResponse,
    },
-    /// EXPERIMENTAL - list collaboration mode presets.
-    CollaborationModeList => "collaborationMode/list" {
-        params: v2::CollaborationModeListParams,
-        response: v2::CollaborationModeListResponse,
-    },

    McpServerOauthLogin => "mcpServer/oauth/login" {
        params: v2::McpServerOauthLoginParams,
        response: v2::McpServerOauthLoginResponse,
    },

-    McpServerRefresh => "config/mcpServer/reload" {
-        params: #[ts(type = "undefined")] #[serde(skip_serializing_if = "Option::is_none")] Option<()>,
-        response: v2::McpServerRefreshResponse,
-    },
-
    McpServerStatusList => "mcpServerStatus/list" {
        params: v2::ListMcpServerStatusParams,
        response: v2::ListMcpServerStatusResponse,
@@ -219,11 +197,6 @@ client_request_definitions! {
        response: v2::ConfigWriteResponse,
    },

-    ConfigRequirementsRead => "configRequirements/read" {
-        params: #[ts(type = "undefined")] #[serde(skip_serializing_if = "Option::is_none")] Option<()>,
-        response: v2::ConfigRequirementsReadResponse,
-    },
-
    GetAccount => "account/read" {
        params: v2::GetAccountParams,
        response: v2::GetAccountResponse,
@@ -248,11 +221,6 @@ client_request_definitions! {
        params: v1::ResumeConversationParams,
        response: v1::ResumeConversationResponse,
    },
-    /// Fork a recorded Codex conversation into a new session.
-    ForkConversation {
-        params: v1::ForkConversationParams,
-        response: v1::ForkConversationResponse,
-    },
    ArchiveConversation {
        params: v1::ArchiveConversationParams,
        response: v1::ArchiveConversationResponse,
@@ -510,12 +478,6 @@ server_request_definitions! {
        response: v2::FileChangeRequestApprovalResponse,
    },

-    /// EXPERIMENTAL - Request input from the user for a tool call.
-    ToolRequestUserInput => "item/tool/requestUserInput" {
-        params: v2::ToolRequestUserInputParams,
-        response: v2::ToolRequestUserInputResponse,
-    },
-
    /// DEPRECATED APIs below
    /// Request to approve a patch.
    /// This request is used for Turns started via the legacy APIs (i.e. SendUserTurn, SendUserMessage).
@@ -582,7 +544,6 @@ server_notification_definitions! {
    ReasoningTextDelta => "item/reasoning/textDelta" (v2::ReasoningTextDeltaNotification),
    ContextCompacted => "thread/compacted" (v2::ContextCompactedNotification),
    DeprecationNotice => "deprecationNotice" (v2::DeprecationNoticeNotification),
-    ConfigWarning => "configWarning" (v2::ConfigWarningNotification),

    /// Notifies the user of world-writable directories on Windows, which cannot be protected by the sandbox.
    WindowsWorldWritableWarning => "windows/worldWritableWarning" (v2::WindowsWorldWritableWarningNotification),
@@ -750,22 +711,6 @@ mod tests {
        Ok(())
    }

-    #[test]
-    fn serialize_config_requirements_read() -> Result<()> {
-        let request = ClientRequest::ConfigRequirementsRead {
-            request_id: RequestId::Integer(1),
-            params: None,
-        };
-        assert_eq!(
-            json!({
-                "method": "configRequirements/read",
-                "id": 1,
-            }),
-            serde_json::to_value(&request)?,
-        );
-        Ok(())
-    }
-
    #[test]
    fn serialize_account_login_api_key() -> Result<()> {
        let request = ClientRequest::LoginAccount {
@@ -889,21 +834,4 @@ mod tests {
        );
        Ok(())
    }
-
-    #[test]
-    fn serialize_list_collaboration_modes() -> Result<()> {
-        let request = ClientRequest::CollaborationModeList {
-            request_id: RequestId::Integer(7),
-            params: v2::CollaborationModeListParams::default(),
-        };
-        assert_eq!(
-            json!({
-                "method": "collaborationMode/list",
-                "id": 7,
-                "params": {}
-            }),
-            serde_json::to_value(&request)?,
-        );
-        Ok(())
-    }
 }
--- a/codex-rs/app-server-protocol/src/protocol/thread_history.rs
+++ b/codex-rs/app-server-protocol/src/protocol/thread_history.rs
@@ -197,12 +197,6 @@ impl ThreadHistoryBuilder {
        if !payload.message.trim().is_empty() {
            content.push(UserInput::Text {
                text: payload.message.clone(),
-                text_elements: payload
-                    .text_elements
-                    .iter()
-                    .cloned()
-                    .map(Into::into)
-                    .collect(),
            });
        }
        if let Some(images) = &payload.images {
@@ -210,9 +204,6 @@ impl ThreadHistoryBuilder {
                content.push(UserInput::Image { url: image.clone() });
            }
        }
-        for path in &payload.local_images {
-            content.push(UserInput::LocalImage { path: path.clone() });
-        }
        content
    }
 }
@@ -253,8 +244,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "First turn".into(),
                images: Some(vec!["https://example.com/one.png".into()]),
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "Hi there".into(),
@@ -268,8 +257,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Second turn".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "Reply two".into(),
@@ -290,7 +277,6 @@ mod tests {
                content: vec![
                    UserInput::Text {
                        text: "First turn".into(),
-                        text_elements: Vec::new(),
                    },
                    UserInput::Image {
                        url: "https://example.com/one.png".into(),
@@ -322,8 +308,7 @@ mod tests {
            ThreadItem::UserMessage {
                id: "item-4".into(),
                content: vec![UserInput::Text {
-                    text: "Second turn".into(),
-                    text_elements: Vec::new(),
+                    text: "Second turn".into()
                }],
            }
        );
@@ -342,8 +327,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Turn start".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentReasoning(AgentReasoningEvent {
                text: "first summary".into(),
@@ -388,8 +371,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Please do the thing".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "Working...".into(),
@@ -400,8 +381,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Let's try again".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "Second attempt complete.".into(),
@@ -419,8 +398,7 @@ mod tests {
            ThreadItem::UserMessage {
                id: "item-1".into(),
                content: vec![UserInput::Text {
-                    text: "Please do the thing".into(),
-                    text_elements: Vec::new(),
+                    text: "Please do the thing".into()
                }],
            }
        );
@@ -440,8 +418,7 @@ mod tests {
            ThreadItem::UserMessage {
                id: "item-3".into(),
                content: vec![UserInput::Text {
-                    text: "Let's try again".into(),
-                    text_elements: Vec::new(),
+                    text: "Let's try again".into()
                }],
            }
        );
@@ -460,8 +437,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "First".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "A1".into(),
@@ -469,8 +444,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Second".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "A2".into(),
@@ -479,8 +452,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Third".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "A3".into(),
@@ -498,7 +469,6 @@ mod tests {
                        id: "item-1".into(),
                        content: vec![UserInput::Text {
                            text: "First".into(),
-                            text_elements: Vec::new(),
                        }],
                    },
                    ThreadItem::AgentMessage {
@@ -516,7 +486,6 @@ mod tests {
                        id: "item-3".into(),
                        content: vec![UserInput::Text {
                            text: "Third".into(),
-                            text_elements: Vec::new(),
                        }],
                    },
                    ThreadItem::AgentMessage {
@@ -535,8 +504,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "One".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "A1".into(),
@@ -544,8 +511,6 @@ mod tests {
            EventMsg::UserMessage(UserMessageEvent {
                message: "Two".into(),
                images: None,
-                text_elements: Vec::new(),
-                local_images: Vec::new(),
            }),
            EventMsg::AgentMessage(AgentMessageEvent {
                message: "A2".into(),
--- a/codex-rs/app-server-protocol/src/protocol/v1.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v1.rs
@@ -16,8 +16,6 @@ use codex_protocol::protocol::ReviewDecision;
 use codex_protocol::protocol::SandboxPolicy;
 use codex_protocol::protocol::SessionSource;
 use codex_protocol::protocol::TurnAbortReason;
-use codex_protocol::user_input::ByteRange as CoreByteRange;
-use codex_protocol::user_input::TextElement as CoreTextElement;
 use codex_utils_absolute_path::AbsolutePathBuf;
 use schemars::JsonSchema;
 use serde::Deserialize;
@@ -85,15 +83,6 @@ pub struct ResumeConversationResponse {
    pub rollout_path: PathBuf,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-pub struct ForkConversationResponse {
-    pub conversation_id: ThreadId,
-    pub model: String,
-    pub initial_messages: Option<Vec<EventMsg>>,
-    pub rollout_path: PathBuf,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(untagged)]
 pub enum GetConversationSummaryParams {
@@ -128,7 +117,6 @@ pub struct ConversationSummary {
    pub path: PathBuf,
    pub preview: String,
    pub timestamp: Option<String>,
-    pub updated_at: Option<String>,
    pub model_provider: String,
    pub cwd: PathBuf,
    pub cli_version: String,
@@ -160,14 +148,6 @@ pub struct ResumeConversationParams {
    pub overrides: Option<NewConversationParams>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-pub struct ForkConversationParams {
-    pub path: Option<PathBuf>,
-    pub conversation_id: Option<ThreadId>,
-    pub overrides: Option<NewConversationParams>,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 pub struct AddConversationSubscriptionResponse {
@@ -447,71 +427,9 @@ pub struct RemoveConversationListenerParams {
 #[serde(rename_all = "camelCase")]
 #[serde(tag = "type", content = "data")]
 pub enum InputItem {
-    Text {
-        text: String,
-        /// UI-defined spans within `text` used to render or persist special elements.
-        #[serde(default)]
-        text_elements: Vec<V1TextElement>,
-    },
-    Image {
-        image_url: String,
-    },
-    LocalImage {
-        path: PathBuf,
-    },
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, Eq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(rename = "ByteRange")]
-pub struct V1ByteRange {
-    /// Start byte offset (inclusive) within the UTF-8 text buffer.
-    pub start: usize,
-    /// End byte offset (exclusive) within the UTF-8 text buffer.
-    pub end: usize,
-}
-
-impl From<CoreByteRange> for V1ByteRange {
-    fn from(value: CoreByteRange) -> Self {
-        Self {
-            start: value.start,
-            end: value.end,
-        }
-    }
-}
-
-impl From<V1ByteRange> for CoreByteRange {
-    fn from(value: V1ByteRange) -> Self {
-        Self {
-            start: value.start,
-            end: value.end,
-        }
-    }
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(rename = "TextElement")]
-pub struct V1TextElement {
-    /// Byte range in the parent `text` buffer that this element occupies.
-    pub byte_range: V1ByteRange,
-    /// Optional human-readable placeholder for the element, displayed in the UI.
-    pub placeholder: Option<String>,
-}
-
-impl From<CoreTextElement> for V1TextElement {
-    fn from(value: CoreTextElement) -> Self {
-        Self {
-            byte_range: value.byte_range.into(),
-            placeholder: value._placeholder_for_conversion_only().map(str::to_string),
-        }
-    }
-}
-
-impl From<V1TextElement> for CoreTextElement {
-    fn from(value: V1TextElement) -> Self {
-        Self::new(value.byte_range.into(), value.placeholder)
-    }
+    Text { text: String },
+    Image { image_url: String },
+    LocalImage { path: PathBuf },
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
--- a/codex-rs/app-server-protocol/src/protocol/v2.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v2.rs
@@ -4,12 +4,10 @@ use std::path::PathBuf;
 use crate::protocol::common::AuthMode;
 use codex_protocol::account::PlanType;
 use codex_protocol::approvals::ExecPolicyAmendment as CoreExecPolicyAmendment;
-use codex_protocol::config_types::CollaborationMode;
 use codex_protocol::config_types::ForcedLoginMethod;
 use codex_protocol::config_types::ReasoningSummary;
 use codex_protocol::config_types::SandboxMode as CoreSandboxMode;
 use codex_protocol::config_types::Verbosity;
-use codex_protocol::config_types::WebSearchMode;
 use codex_protocol::items::AgentMessageContent as CoreAgentMessageContent;
 use codex_protocol::items::TurnItem as CoreTurnItem;
 use codex_protocol::models::ResponseItem;
@@ -17,7 +15,6 @@ use codex_protocol::openai_models::ReasoningEffort;
 use codex_protocol::parse_command::ParsedCommand as CoreParsedCommand;
 use codex_protocol::plan_tool::PlanItemArg as CorePlanItemArg;
 use codex_protocol::plan_tool::StepStatus as CorePlanStepStatus;
-use codex_protocol::protocol::AgentStatus as CoreAgentStatus;
 use codex_protocol::protocol::AskForApproval as CoreAskForApproval;
 use codex_protocol::protocol::CodexErrorInfo as CoreCodexErrorInfo;
 use codex_protocol::protocol::CreditsSnapshot as CoreCreditsSnapshot;
@@ -26,13 +23,10 @@ use codex_protocol::protocol::RateLimitSnapshot as CoreRateLimitSnapshot;
 use codex_protocol::protocol::RateLimitWindow as CoreRateLimitWindow;
 use codex_protocol::protocol::SessionSource as CoreSessionSource;
 use codex_protocol::protocol::SkillErrorInfo as CoreSkillErrorInfo;
-use codex_protocol::protocol::SkillInterface as CoreSkillInterface;
 use codex_protocol::protocol::SkillMetadata as CoreSkillMetadata;
 use codex_protocol::protocol::SkillScope as CoreSkillScope;
 use codex_protocol::protocol::TokenUsage as CoreTokenUsage;
 use codex_protocol::protocol::TokenUsageInfo as CoreTokenUsageInfo;
-use codex_protocol::user_input::ByteRange as CoreByteRange;
-use codex_protocol::user_input::TextElement as CoreTextElement;
 use codex_protocol::user_input::UserInput as CoreUserInput;
 use codex_utils_absolute_path::AbsolutePathBuf;
 use mcp_types::ContentBlock as McpContentBlock;
@@ -333,7 +327,6 @@ pub struct ProfileV2 {
    pub model_reasoning_effort: Option<ReasoningEffort>,
    pub model_reasoning_summary: Option<ReasoningSummary>,
    pub model_verbosity: Option<Verbosity>,
-    pub web_search: Option<WebSearchMode>,
    pub chatgpt_base_url: Option<String>,
    #[serde(default, flatten)]
    pub additional: HashMap<String, JsonValue>,
@@ -362,7 +355,6 @@ pub struct Config {
    pub sandbox_workspace_write: Option<SandboxWorkspaceWrite>,
    pub forced_chatgpt_workspace_id: Option<String>,
    pub forced_login_method: Option<ForcedLoginMethod>,
-    pub web_search: Option<WebSearchMode>,
    pub tools: Option<ToolsV2>,
    pub profile: Option<String>,
    #[serde(default)]
@@ -461,22 +453,6 @@ pub struct ConfigReadResponse {
    pub layers: Option<Vec<ConfigLayer>>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ConfigRequirements {
-    pub allowed_approval_policies: Option<Vec<AskForApproval>>,
-    pub allowed_sandbox_modes: Option<Vec<SandboxMode>>,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ConfigRequirementsReadResponse {
-    /// Null if no requirements are configured (e.g. no requirements.toml/MDM entries).
-    pub requirements: Option<ConfigRequirements>,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -917,20 +893,6 @@ pub struct ModelListResponse {
    pub next_cursor: Option<String>,
 }

-/// EXPERIMENTAL - list collaboration mode presets.
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct CollaborationModeListParams {}
-
-/// EXPERIMENTAL - collaboration mode presets response.
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct CollaborationModeListResponse {
-    pub data: Vec<CollaborationMode>,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -962,16 +924,6 @@ pub struct ListMcpServerStatusResponse {
    pub next_cursor: Option<String>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct McpServerRefreshParams {}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct McpServerRefreshResponse {}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -1112,47 +1064,6 @@ pub struct ThreadResumeResponse {
    pub reasoning_effort: Option<ReasoningEffort>,
 }

-#[derive(Serialize, Deserialize, Debug, Default, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-/// There are two ways to fork a thread:
-/// 1. By thread_id: load the thread from disk by thread_id and fork it into a new thread.
-/// 2. By path: load the thread from disk by path and fork it into a new thread.
-///
-/// If using path, the thread_id param will be ignored.
-///
-/// Prefer using thread_id whenever possible.
-pub struct ThreadForkParams {
-    pub thread_id: String,
-
-    /// [UNSTABLE] Specify the rollout path to fork from.
-    /// If specified, the thread_id param will be ignored.
-    pub path: Option<PathBuf>,
-
-    /// Configuration overrides for the forked thread, if any.
-    pub model: Option<String>,
-    pub model_provider: Option<String>,
-    pub cwd: Option<String>,
-    pub approval_policy: Option<AskForApproval>,
-    pub sandbox: Option<SandboxMode>,
-    pub config: Option<HashMap<String, serde_json::Value>>,
-    pub base_instructions: Option<String>,
-    pub developer_instructions: Option<String>,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ThreadForkResponse {
-    pub thread: Thread,
-    pub model: String,
-    pub model_provider: String,
-    pub cwd: PathBuf,
-    pub approval_policy: AskForApproval,
-    pub sandbox: SandboxPolicy,
-    pub reasoning_effort: Option<ReasoningEffort>,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -1197,21 +1108,11 @@ pub struct ThreadListParams {
    pub cursor: Option<String>,
    /// Optional page size; defaults to a reasonable server-side value.
    pub limit: Option<u32>,
-    /// Optional sort key; defaults to created_at.
-    pub sort_key: Option<ThreadSortKey>,
    /// Optional provider filter; when set, only sessions recorded under these
    /// providers are returned. When present but empty, includes all providers.
    pub model_providers: Option<Vec<String>>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "snake_case")]
-#[ts(export_to = "v2/")]
-pub enum ThreadSortKey {
-    CreatedAt,
-    UpdatedAt,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -1222,27 +1123,6 @@ pub struct ThreadListResponse {
    pub next_cursor: Option<String>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ThreadLoadedListParams {
-    /// Opaque pagination cursor returned by a previous call.
-    pub cursor: Option<String>,
-    /// Optional page size; defaults to no limit.
-    pub limit: Option<u32>,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ThreadLoadedListResponse {
-    /// Thread ids for sessions currently loaded in memory.
-    pub data: Vec<String>,
-    /// Opaque cursor to pass to the next call to continue after the last item.
-    /// if None, there are no more items to return.
-    pub next_cursor: Option<String>,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -1280,34 +1160,11 @@ pub enum SkillScope {
 pub struct SkillMetadata {
    pub name: String,
    pub description: String,
-    #[serde(default, skip_serializing_if = "Option::is_none")]
    #[ts(optional)]
-    /// Legacy short_description from SKILL.md. Prefer SKILL.toml interface.short_description.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub short_description: Option<String>,
-    #[serde(default, skip_serializing_if = "Option::is_none")]
-    #[ts(optional)]
-    pub interface: Option<SkillInterface>,
    pub path: PathBuf,
    pub scope: SkillScope,
-    pub enabled: bool,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct SkillInterface {
-    #[ts(optional)]
-    pub display_name: Option<String>,
-    #[ts(optional)]
-    pub short_description: Option<String>,
-    #[ts(optional)]
-    pub icon_small: Option<PathBuf>,
-    #[ts(optional)]
-    pub icon_large: Option<PathBuf>,
-    #[ts(optional)]
-    pub brand_color: Option<String>,
-    #[ts(optional)]
-    pub default_prompt: Option<String>,
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
@@ -1327,44 +1184,14 @@ pub struct SkillsListEntry {
    pub errors: Vec<SkillErrorInfo>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct SkillsConfigWriteParams {
-    pub path: PathBuf,
-    pub enabled: bool,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct SkillsConfigWriteResponse {
-    pub effective_enabled: bool,
-}
-
 impl From<CoreSkillMetadata> for SkillMetadata {
    fn from(value: CoreSkillMetadata) -> Self {
        Self {
            name: value.name,
            description: value.description,
            short_description: value.short_description,
-            interface: value.interface.map(SkillInterface::from),
            path: value.path,
            scope: value.scope.into(),
-            enabled: true,
-        }
-    }
-}
-
-impl From<CoreSkillInterface> for SkillInterface {
-    fn from(value: CoreSkillInterface) -> Self {
-        Self {
-            display_name: value.display_name,
-            short_description: value.short_description,
-            brand_color: value.brand_color,
-            default_prompt: value.default_prompt,
-            icon_small: value.icon_small,
-            icon_large: value.icon_large,
        }
    }
 }
@@ -1401,9 +1228,6 @@ pub struct Thread {
    /// Unix timestamp (in seconds) when the thread was created.
    #[ts(type = "number")]
    pub created_at: i64,
-    /// Unix timestamp (in seconds) when the thread was last updated.
-    #[ts(type = "number")]
-    pub updated_at: i64,
    /// [UNSTABLE] Path to the thread on disk.
    pub path: PathBuf,
    /// Working directory captured for the thread.
@@ -1414,7 +1238,7 @@ pub struct Thread {
    pub source: SessionSource,
    /// Optional Git metadata captured when the thread was created.
    pub git_info: Option<GitInfo>,
-    /// Only populated on `thread/resume`, `thread/rollback`, `thread/fork` responses.
+    /// Only populated on `thread/resume` and `thread/rollback` responses.
    /// For all other responses and notifications returning a Thread,
    /// the turns field will be an empty list.
    pub turns: Vec<Turn>,
@@ -1490,7 +1314,7 @@ impl From<CoreTokenUsage> for TokenUsageBreakdown {
 #[ts(export_to = "v2/")]
 pub struct Turn {
    pub id: String,
-    /// Only populated on a `thread/resume` or `thread/fork` response.
+    /// Only populated on a `thread/resume` response.
    /// For all other responses and notifications returning a Turn,
    /// the items field will be an empty list.
    pub items: Vec<ThreadItem>,
@@ -1553,10 +1377,6 @@ pub struct TurnStartParams {
    pub summary: Option<ReasoningSummary>,
    /// Optional JSON Schema used to constrain the final assistant message for this turn.
    pub output_schema: Option<JsonValue>,
-
-    /// EXPERIMENTAL - set a pre-set collaboration mode.
-    /// Takes precedence over model, reasoning_effort, and developer instructions if set.
-    pub collaboration_mode: Option<CollaborationMode>,
 }

 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
@@ -1632,110 +1452,22 @@ pub struct TurnInterruptParams {
 pub struct TurnInterruptResponse {}

 // User input types
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ByteRange {
-    pub start: usize,
-    pub end: usize,
-}
-
-impl From<CoreByteRange> for ByteRange {
-    fn from(value: CoreByteRange) -> Self {
-        Self {
-            start: value.start,
-            end: value.end,
-        }
-    }
-}
-
-impl From<ByteRange> for CoreByteRange {
-    fn from(value: ByteRange) -> Self {
-        Self {
-            start: value.start,
-            end: value.end,
-        }
-    }
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct TextElement {
-    /// Byte range in the parent `text` buffer that this element occupies.
-    pub byte_range: ByteRange,
-    /// Optional human-readable placeholder for the element, displayed in the UI.
-    placeholder: Option<String>,
-}
-
-impl TextElement {
-    pub fn new(byte_range: ByteRange, placeholder: Option<String>) -> Self {
-        Self {
-            byte_range,
-            placeholder,
-        }
-    }
-
-    pub fn set_placeholder(&mut self, placeholder: Option<String>) {
-        self.placeholder = placeholder;
-    }
-
-    pub fn placeholder(&self) -> Option<&str> {
-        self.placeholder.as_deref()
-    }
-}
-
-impl From<CoreTextElement> for TextElement {
-    fn from(value: CoreTextElement) -> Self {
-        Self::new(
-            value.byte_range.into(),
-            value._placeholder_for_conversion_only().map(str::to_string),
-        )
-    }
-}
-
-impl From<TextElement> for CoreTextElement {
-    fn from(value: TextElement) -> Self {
-        Self::new(value.byte_range.into(), value.placeholder)
-    }
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(tag = "type", rename_all = "camelCase")]
 #[ts(tag = "type")]
 #[ts(export_to = "v2/")]
 pub enum UserInput {
-    Text {
-        text: String,
-        /// UI-defined spans within `text` used to render or persist special elements.
-        #[serde(default)]
-        text_elements: Vec<TextElement>,
-    },
-    Image {
-        url: String,
-    },
-    LocalImage {
-        path: PathBuf,
-    },
-    Skill {
-        name: String,
-        path: PathBuf,
-    },
+    Text { text: String },
+    Image { url: String },
+    LocalImage { path: PathBuf },
 }

 impl UserInput {
    pub fn into_core(self) -> CoreUserInput {
        match self {
-            UserInput::Text {
-                text,
-                text_elements,
-            } => CoreUserInput::Text {
-                text,
-                text_elements: text_elements.into_iter().map(Into::into).collect(),
-            },
+            UserInput::Text { text } => CoreUserInput::Text { text },
            UserInput::Image { url } => CoreUserInput::Image { image_url: url },
            UserInput::LocalImage { path } => CoreUserInput::LocalImage { path },
-            UserInput::Skill { name, path } => CoreUserInput::Skill { name, path },
        }
    }
 }
@@ -1743,16 +1475,9 @@ impl UserInput {
 impl From<CoreUserInput> for UserInput {
    fn from(value: CoreUserInput) -> Self {
        match value {
-            CoreUserInput::Text {
-                text,
-                text_elements,
-            } => UserInput::Text {
-                text,
-                text_elements: text_elements.into_iter().map(Into::into).collect(),
-            },
+            CoreUserInput::Text { text } => UserInput::Text { text },
            CoreUserInput::Image { image_url } => UserInput::Image { url: image_url },
            CoreUserInput::LocalImage { path } => UserInput::LocalImage { path },
-            CoreUserInput::Skill { name, path } => UserInput::Skill { name, path },
            _ => unreachable!("unsupported user input variant"),
        }
    }
@@ -1824,25 +1549,6 @@ pub enum ThreadItem {
    },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
-    CollabAgentToolCall {
-        /// Unique identifier for this collab tool call.
-        id: String,
-        /// Name of the collab tool that was invoked.
-        tool: CollabAgentTool,
-        /// Current status of the collab tool call.
-        status: CollabAgentToolCallStatus,
-        /// Thread ID of the agent issuing the collab request.
-        sender_thread_id: String,
-        /// Thread ID of the receiving agent, when applicable. In case of spawn operation,
-        /// this corresponds to the newly spawned agent.
-        receiver_thread_ids: Vec<String>,
-        /// Prompt text sent as part of the collab tool call, when available.
-        prompt: Option<String>,
-        /// Last known status of the target agents, when available.
-        agents_states: HashMap<String, CollabAgentState>,
-    },
-    #[serde(rename_all = "camelCase")]
-    #[ts(rename_all = "camelCase")]
    WebSearch { id: String, query: String },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
@@ -1895,16 +1601,6 @@ pub enum CommandExecutionStatus {
    Declined,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub enum CollabAgentTool {
-    SpawnAgent,
-    SendInput,
-    Wait,
-    CloseAgent,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -1943,66 +1639,6 @@ pub enum McpToolCallStatus {
    Failed,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub enum CollabAgentToolCallStatus {
-    InProgress,
-    Completed,
-    Failed,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub enum CollabAgentStatus {
-    PendingInit,
-    Running,
-    Completed,
-    Errored,
-    Shutdown,
-    NotFound,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct CollabAgentState {
-    pub status: CollabAgentStatus,
-    pub message: Option<String>,
-}
-
-impl From<CoreAgentStatus> for CollabAgentState {
-    fn from(value: CoreAgentStatus) -> Self {
-        match value {
-            CoreAgentStatus::PendingInit => Self {
-                status: CollabAgentStatus::PendingInit,
-                message: None,
-            },
-            CoreAgentStatus::Running => Self {
-                status: CollabAgentStatus::Running,
-                message: None,
-            },
-            CoreAgentStatus::Completed(message) => Self {
-                status: CollabAgentStatus::Completed,
-                message,
-            },
-            CoreAgentStatus::Errored(message) => Self {
-                status: CollabAgentStatus::Errored,
-                message: Some(message),
-            },
-            CoreAgentStatus::Shutdown => Self {
-                status: CollabAgentStatus::Shutdown,
-                message: None,
-            },
-            CoreAgentStatus::NotFound => Self {
-                status: CollabAgentStatus::NotFound,
-                message: None,
-            },
-        }
-    }
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -2291,54 +1927,6 @@ pub struct FileChangeRequestApprovalResponse {
    pub decision: FileChangeApprovalDecision,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-/// EXPERIMENTAL. Defines a single selectable option for request_user_input.
-pub struct ToolRequestUserInputOption {
-    pub label: String,
-    pub description: String,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-/// EXPERIMENTAL. Represents one request_user_input question and its optional options.
-pub struct ToolRequestUserInputQuestion {
-    pub id: String,
-    pub header: String,
-    pub question: String,
-    pub options: Option<Vec<ToolRequestUserInputOption>>,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-/// EXPERIMENTAL. Params sent with a request_user_input event.
-pub struct ToolRequestUserInputParams {
-    pub thread_id: String,
-    pub turn_id: String,
-    pub item_id: String,
-    pub questions: Vec<ToolRequestUserInputQuestion>,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-/// EXPERIMENTAL. Captures a user's answer to a request_user_input question.
-pub struct ToolRequestUserInputAnswer {
-    pub selected: Vec<String>,
-    pub other: Option<String>,
-}
-
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-/// EXPERIMENTAL. Response payload mapping question ids to answers.
-pub struct ToolRequestUserInputResponse {
-    pub answers: HashMap<String, ToolRequestUserInputAnswer>,
-}
-
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]
@@ -2428,16 +2016,6 @@ pub struct DeprecationNoticeNotification {
    pub details: Option<String>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
-#[serde(rename_all = "camelCase")]
-#[ts(export_to = "v2/")]
-pub struct ConfigWarningNotification {
-    /// Concise summary of the warning.
-    pub summary: String,
-    /// Optional extra guidance or error details.
-    pub details: Option<String>,
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -2478,7 +2056,6 @@ mod tests {
            content: vec![
                CoreUserInput::Text {
                    text: "hello".to_string(),
-                    text_elements: Vec::new(),
                },
                CoreUserInput::Image {
                    image_url: "https://example.com/image.png".to_string(),
@@ -2486,10 +2063,6 @@ mod tests {
                CoreUserInput::LocalImage {
                    path: PathBuf::from("local/image.png"),
                },
-                CoreUserInput::Skill {
-                    name: "skill-creator".to_string(),
-                    path: PathBuf::from("/repo/.codex/skills/skill-creator/SKILL.md"),
-                },
            ],
        });

@@ -2500,7 +2073,6 @@ mod tests {
                content: vec![
                    UserInput::Text {
                        text: "hello".to_string(),
-                        text_elements: Vec::new(),
                    },
                    UserInput::Image {
                        url: "https://example.com/image.png".to_string(),
@@ -2508,10 +2080,6 @@ mod tests {
                    UserInput::LocalImage {
                        path: PathBuf::from("local/image.png"),
                    },
-                    UserInput::Skill {
-                        name: "skill-creator".to_string(),
-                        path: PathBuf::from("/repo/.codex/skills/skill-creator/SKILL.md"),
-                    },
                ],
            }
        );
--- a/codex-rs/app-server-test-client/BUILD.bazel
+++ b/codex-rs/app-server-test-client/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "codex-app-server-test-client",
-    crate_name = "codex_app_server_test_client",
-)
--- a/codex-rs/app-server-test-client/src/main.rs
+++ b/codex-rs/app-server-test-client/src/main.rs
@@ -256,11 +256,7 @@ fn send_message_v2_with_policies(
    println!("< thread/start response: {thread_response:?}");
    let mut turn_params = TurnStartParams {
        thread_id: thread_response.thread.id.clone(),
-        input: vec![V2UserInput::Text {
-            text: user_message,
-            // Test client sends plain text without UI element ranges.
-            text_elements: Vec::new(),
-        }],
+        input: vec![V2UserInput::Text { text: user_message }],
        ..Default::default()
    };
    turn_params.approval_policy = approval_policy;
@@ -292,8 +288,6 @@ fn send_follow_up_v2(
        thread_id: thread_response.thread.id.clone(),
        input: vec![V2UserInput::Text {
            text: first_message,
-            // Test client sends plain text without UI element ranges.
-            text_elements: Vec::new(),
        }],
        ..Default::default()
    };
@@ -305,8 +299,6 @@ fn send_follow_up_v2(
        thread_id: thread_response.thread.id.clone(),
        input: vec![V2UserInput::Text {
            text: follow_up_message,
-            // Test client sends plain text without UI element ranges.
-            text_elements: Vec::new(),
        }],
        ..Default::default()
    };
@@ -479,8 +471,6 @@ impl CodexClient {
                conversation_id: *conversation_id,
                items: vec![InputItem::Text {
                    text: message.to_string(),
-                    // Test client sends plain text without UI element ranges.
-                    text_elements: Vec::new(),
                }],
            },
        };
@@ -555,7 +545,7 @@ impl CodexClient {
                        print!("{}", event.delta);
                        std::io::stdout().flush().ok();
                    }
-                    EventMsg::TurnComplete(event) => {
+                    EventMsg::TaskComplete(event) => {
                        println!("\n[task complete: {event:?}]");
                        break;
                    }
--- a/codex-rs/app-server/BUILD.bazel
+++ b/codex-rs/app-server/BUILD.bazel
@@ -1,8 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "app-server",
-    crate_name = "codex_app_server",
-    integration_deps_extra = ["//codex-rs/app-server/tests/common:common"],
-    test_tags = ["no-sandbox"],
-)
--- a/codex-rs/app-server/README.md
+++ b/codex-rs/app-server/README.md
@@ -41,7 +41,7 @@ Use the thread APIs to create, list, or archive conversations. Drive a conversat
 ## Lifecycle Overview

 - Initialize once: Immediately after launching the codex app-server process, send an `initialize` request with your client metadata, then emit an `initialized` notification. Any other request before this handshake gets rejected.
- Start (or resume) a thread: Call `thread/start` to open a fresh conversation. The response returns the thread object and you’ll also get a `thread/started` notification. If you’re continuing an existing conversation, call `thread/resume` with its ID instead. If you want to branch from an existing conversation, call `thread/fork` to create a new thread id with copied history.
+- Start (or resume) a thread: Call `thread/start` to open a fresh conversation. The response returns the thread object and you’ll also get a `thread/started` notification. If you’re continuing an existing conversation, call `thread/resume` with its ID instead.
 - Begin a turn: To send user input, call `turn/start` with the target `threadId` and the user's input. Optional fields let you override model, cwd, sandbox policy, etc. This immediately returns the new turn object and triggers a `turn/started` notification.
 - Stream events: After `turn/start`, keep reading JSON-RPC notifications on stdout. You’ll see `item/started`, `item/completed`, deltas like `item/agentMessage/delta`, tool progress, etc. These represent streaming model output plus any side effects (commands, tool calls, reasoning notes).
 - Finish the turn: When the model is done (or the turn is interrupted via making the `turn/interrupt` call), the server sends `turn/completed` with the final turn state and token usage.
@@ -52,10 +52,6 @@ Clients must send a single `initialize` request before invoking any other method

 Applications building on top of `codex app-server` should identify themselves via the `clientInfo` parameter.

-**Important**: `clientInfo.name` is used to identify the client for the OpenAI Compliance Logs Platform. If
-you are developing a new Codex integration that is intended for enterprise use, please contact us to get it
-added to a known clients list. For more context: https://chatgpt.com/admin/api-reference#tag/Logs:-Codex
-
 Example (from OpenAI's official VSCode extension):

 ```json
@@ -64,7 +60,7 @@ Example (from OpenAI's official VSCode extension):
  "id": 0,
  "params": {
    "clientInfo": {
-      "name": "codex_vscode",
+      "name": "codex-vscode",
      "title": "Codex VS Code Extension",
      "version": "0.1.0"
    }
@@ -76,9 +72,7 @@ Example (from OpenAI's official VSCode extension):

 - `thread/start` — create a new thread; emits `thread/started` and auto-subscribes you to turn/item events for that thread.
 - `thread/resume` — reopen an existing thread by id so subsequent `turn/start` calls append to it.
- `thread/fork` — fork an existing thread into a new thread id by copying the stored history; emits `thread/started` and auto-subscribes you to turn/item events for the new thread.
 - `thread/list` — page through stored rollouts; supports cursor-based pagination and optional `modelProviders` filtering.
- `thread/loaded/list` — list the thread ids currently loaded in memory.
 - `thread/archive` — move a thread’s rollout file into the archived directory; returns `{}` on success.
 - `thread/rollback` — drop the last N turns from the agent’s in-memory context and persist a rollback marker in the rollout so future resumes see the pruned history; returns the updated `thread` (with `turns` populated) on success.
 - `turn/start` — add user input to a thread and begin Codex generation; responds with the initial `turn` object and streams `turn/started`, `item/*`, and `turn/completed` notifications.
@@ -86,19 +80,14 @@ Example (from OpenAI's official VSCode extension):
 - `review/start` — kick off Codex’s automated reviewer for a thread; responds like `turn/start` and emits `item/started`/`item/completed` notifications with `enteredReviewMode` and `exitedReviewMode` items, plus a final assistant `agentMessage` containing the review.
 - `command/exec` — run a single command under the server sandbox without starting a thread/turn (handy for utilities and validation).
 - `model/list` — list available models (with reasoning effort options).
- `collaborationMode/list` — list available collaboration mode presets (experimental, no pagination).
 - `skills/list` — list skills for one or more `cwd` values (optional `forceReload`).
- `skills/config/write` — write user-level skill config by path.
 - `mcpServer/oauth/login` — start an OAuth login for a configured MCP server; returns an `authorization_url` and later emits `mcpServer/oauthLogin/completed` once the browser flow finishes.
- `tool/requestUserInput` — prompt the user with 1–3 short questions for a tool call and return their answers (experimental).
- `config/mcpServer/reload` — reload MCP server config from disk and queue a refresh for loaded threads (applied on each thread's next active turn); returns `{}`. Use this after editing `config.toml` without restarting the server.
 - `mcpServerStatus/list` — enumerate configured MCP servers with their tools, resources, resource templates, and auth status; supports cursor+limit pagination.
 - `feedback/upload` — submit a feedback report (classification + optional reason/logs and conversation_id); returns the tracking thread id.
 - `command/exec` — run a single command under the server sandbox without starting a thread/turn (handy for utilities and validation).
 - `config/read` — fetch the effective config on disk after resolving config layering.
 - `config/value/write` — write a single config key/value to the user's config.toml on disk.
 - `config/batchWrite` — apply multiple config edits atomically to the user's config.toml on disk.
- `configRequirements/read` — fetch the loaded requirements allow-lists from `requirements.toml` and/or MDM (or `null` if none are configured).

 ### Example: Start or resume a thread

@@ -131,21 +120,12 @@ To continue a stored session, call `thread/resume` with the `thread.id` you prev
 { "id": 11, "result": { "thread": { "id": "thr_123", … } } }
 ```

-To branch from a stored session, call `thread/fork` with the `thread.id`. This creates a new thread id and emits a `thread/started` notification for it:
-
-```json
-{ "method": "thread/fork", "id": 12, "params": { "threadId": "thr_123" } }
-{ "id": 12, "result": { "thread": { "id": "thr_456", … } } }
-{ "method": "thread/started", "params": { "thread": { … } } }
-```
-
 ### Example: List threads (with pagination & filters)

-`thread/list` lets you render a history UI. Results default to `createdAt` (newest first) descending. Pass any combination of:
+`thread/list` lets you render a history UI. Pass any combination of:

 - `cursor` — opaque string from a prior response; omit for the first page.
 - `limit` — server defaults to a reasonable page size if unset.
- `sortKey` — `created_at` (default) or `updated_at`.
 - `modelProviders` — restrict results to specific providers; unset, null, or an empty array will include all providers.

 Example:
@@ -154,12 +134,11 @@ Example:
 { "method": "thread/list", "id": 20, "params": {
    "cursor": null,
    "limit": 25,
-    "sortKey": "created_at"
 } }
 { "id": 20, "result": {
    "data": [
-        { "id": "thr_a", "preview": "Create a TUI", "modelProvider": "openai", "createdAt": 1730831111, "updatedAt": 1730831111 },
-        { "id": "thr_b", "preview": "Fix tests", "modelProvider": "openai", "createdAt": 1730750000, "updatedAt": 1730750000 }
+        { "id": "thr_a", "preview": "Create a TUI", "modelProvider": "openai", "createdAt": 1730831111 },
+        { "id": "thr_b", "preview": "Fix tests", "modelProvider": "openai", "createdAt": 1730750000 }
    ],
    "nextCursor": "opaque-token-or-null"
 } }
@@ -167,17 +146,6 @@ Example:

 When `nextCursor` is `null`, you’ve reached the final page.

-### Example: List loaded threads
-
-`thread/loaded/list` returns thread ids currently loaded in memory. This is useful when you want to check which sessions are active without scanning rollouts on disk.
-
-```json
-{ "method": "thread/loaded/list", "id": 21 }
-{ "id": 21, "result": {
-    "data": ["thr_123", "thr_456"]
-} }
-```
-
 ### Example: Archive a thread

 Use `thread/archive` to move the persisted rollout (stored as a JSONL file on disk) into the archived sessions directory.
@@ -232,14 +200,13 @@ You can optionally specify config overrides on the new turn. If specified, these

 ### Example: Start a turn (invoke a skill)

-Invoke a skill explicitly by including `$<skill-name>` in the text input and adding a `skill` input item alongside it.
+Invoke a skill by sending a text input that begins with `$<skill-name>`.

 ```json
 { "method": "turn/start", "id": 33, "params": {
    "threadId": "thr_123",
    "input": [
-        { "type": "text", "text": "$skill-creator Add a new skill for triaging flaky CI and include step-by-step usage." },
-        { "type": "skill", "name": "skill-creator", "path": "/Users/me/.codex/skills/skill-creator/SKILL.md" }
+        { "type": "text", "text": "$skill-creator Add a new skill for triaging flaky CI and include step-by-step usage." }
    ]
 } }
 { "id": 33, "result": { "turn": {
@@ -380,7 +347,6 @@ Today both notifications carry an empty `items` array even when item events were
 - `commandExecution` — `{id, command, cwd, status, commandActions, aggregatedOutput?, exitCode?, durationMs?}` for sandboxed commands; `status` is `inProgress`, `completed`, `failed`, or `declined`.
 - `fileChange` — `{id, changes, status}` describing proposed edits; `changes` list `{path, kind, diff}` and `status` is `inProgress`, `completed`, `failed`, or `declined`.
 - `mcpToolCall` — `{id, server, tool, status, arguments, result?, error?}` describing MCP calls; `status` is `inProgress`, `completed`, or `failed`.
- `collabToolCall` — `{id, tool, status, senderThreadId, receiverThreadId?, newThreadId?, prompt?, agentStatus?}` describing collab tool calls (`spawn_agent`, `send_input`, `wait`, `close_agent`); `status` is `inProgress`, `completed`, or `failed`.
 - `webSearch` — `{id, query}` for a web search request issued by the agent.
 - `imageView` — `{id, path}` emitted when the agent invokes the image viewer tool.
 - `enteredReviewMode` — `{id, review}` sent when the reviewer starts; `review` is a short user-facing label such as `"current changes"` or the requested target description.
@@ -462,30 +428,7 @@ UI guidance for IDEs: surface an approval dialog as soon as the request arrives.

 ## Skills

-Invoke a skill by including `$<skill-name>` in the text input. Add a `skill` input item (recommended) so the backend injects full skill instructions instead of relying on the model to resolve the name.
-
-```json
-{
-  "method": "turn/start",
-  "id": 101,
-  "params": {
-    "threadId": "thread-1",
-    "input": [
-      {
-        "type": "text",
-        "text": "$skill-creator Add a new skill for triaging flaky CI."
-      },
-      {
-        "type": "skill",
-        "name": "skill-creator",
-        "path": "/Users/me/.codex/skills/skill-creator/SKILL.md"
-      }
-    ]
-  }
-}
-```
-
-If you omit the `skill` item, the model will still parse the `$<skill-name>` marker and try to locate the skill, which can add latency.
+Skills are invoked by sending a text input that starts with `$<skill-name>`. The rest of the text is passed to the skill as its input.

 Example:

@@ -493,37 +436,20 @@ Example:
 $skill-creator Add a new skill for triaging flaky CI and include step-by-step usage.
 ```

-Use `skills/list` to fetch the available skills (optionally scoped by `cwds`, with `forceReload`).
+Use `skills/list` to fetch the available skills (optionally scoped by `cwd` and/or with `forceReload`).

 ```json
 { "method": "skills/list", "id": 25, "params": {
-    "cwds": ["/Users/me/project"],
+    "cwd": "/Users/me/project",
    "forceReload": false
 } }
 { "id": 25, "result": {
-    "data": [{
-        "cwd": "/Users/me/project",
-        "skills": [
-            { "name": "skill-creator", "description": "Create or update a Codex skill", "enabled": true }
-        ],
-        "errors": []
-    }]
+    "skills": [
+        { "name": "skill-creator", "description": "Create or update a Codex skill" }
+    ]
 } }
 ```

-To enable or disable a skill by path:
-
-```json
-{
-  "method": "skills/config/write",
-  "id": 26,
-  "params": {
-    "path": "/Users/me/.codex/skills/skill-creator/SKILL.md",
-    "enabled": false
-  }
-}
-```
-
 ## Auth endpoints

 The JSON-RPC auth/account surface exposes request/response methods plus server-initiated notifications (no `id`). Use these to determine auth state, start or cancel logins, logout, and inspect ChatGPT rate limits.
--- a/codex-rs/app-server/src/bespoke_event_handling.rs
+++ b/codex-rs/app-server/src/bespoke_event_handling.rs
@@ -14,9 +14,6 @@ use codex_app_server_protocol::AgentMessageDeltaNotification;
 use codex_app_server_protocol::ApplyPatchApprovalParams;
 use codex_app_server_protocol::ApplyPatchApprovalResponse;
 use codex_app_server_protocol::CodexErrorInfo as V2CodexErrorInfo;
-use codex_app_server_protocol::CollabAgentState as V2CollabAgentStatus;
-use codex_app_server_protocol::CollabAgentTool;
-use codex_app_server_protocol::CollabAgentToolCallStatus as V2CollabToolCallStatus;
 use codex_app_server_protocol::CommandAction as V2ParsedCommand;
 use codex_app_server_protocol::CommandExecutionApprovalDecision;
 use codex_app_server_protocol::CommandExecutionOutputDeltaNotification;
@@ -54,10 +51,6 @@ use codex_app_server_protocol::ThreadItem;
 use codex_app_server_protocol::ThreadRollbackResponse;
 use codex_app_server_protocol::ThreadTokenUsage;
 use codex_app_server_protocol::ThreadTokenUsageUpdatedNotification;
-use codex_app_server_protocol::ToolRequestUserInputOption;
-use codex_app_server_protocol::ToolRequestUserInputParams;
-use codex_app_server_protocol::ToolRequestUserInputQuestion;
-use codex_app_server_protocol::ToolRequestUserInputResponse;
 use codex_app_server_protocol::Turn;
 use codex_app_server_protocol::TurnCompletedNotification;
 use codex_app_server_protocol::TurnDiffUpdatedNotification;
@@ -87,8 +80,6 @@ use codex_core::review_prompts;
 use codex_protocol::ThreadId;
 use codex_protocol::plan_tool::UpdatePlanArgs;
 use codex_protocol::protocol::ReviewOutputEvent;
-use codex_protocol::request_user_input::RequestUserInputAnswer as CoreRequestUserInputAnswer;
-use codex_protocol::request_user_input::RequestUserInputResponse as CoreRequestUserInputResponse;
 use std::collections::HashMap;
 use std::convert::TryFrom;
 use std::path::PathBuf;
@@ -115,7 +106,7 @@ pub(crate) async fn apply_bespoke_event_handling(
        msg,
    } = event;
    match msg {
-        EventMsg::TurnComplete(_ev) => {
+        EventMsg::TaskComplete(_ev) => {
            handle_turn_complete(
                conversation_id,
                event_turn_id,
@@ -264,57 +255,6 @@ pub(crate) async fn apply_bespoke_event_handling(
                });
            }
        },
-        EventMsg::RequestUserInput(request) => {
-            if matches!(api_version, ApiVersion::V2) {
-                let questions = request
-                    .questions
-                    .into_iter()
-                    .map(|question| ToolRequestUserInputQuestion {
-                        id: question.id,
-                        header: question.header,
-                        question: question.question,
-                        options: question.options.map(|options| {
-                            options
-                                .into_iter()
-                                .map(|option| ToolRequestUserInputOption {
-                                    label: option.label,
-                                    description: option.description,
-                                })
-                                .collect()
-                        }),
-                    })
-                    .collect();
-                let params = ToolRequestUserInputParams {
-                    thread_id: conversation_id.to_string(),
-                    turn_id: request.turn_id,
-                    item_id: request.call_id,
-                    questions,
-                };
-                let rx = outgoing
-                    .send_request(ServerRequestPayload::ToolRequestUserInput(params))
-                    .await;
-                tokio::spawn(async move {
-                    on_request_user_input_response(event_turn_id, rx, conversation).await;
-                });
-            } else {
-                error!(
-                    "request_user_input is only supported on api v2 (call_id: {})",
-                    request.call_id
-                );
-                let empty = CoreRequestUserInputResponse {
-                    answers: HashMap::new(),
-                };
-                if let Err(err) = conversation
-                    .submit(Op::UserInputAnswer {
-                        id: event_turn_id,
-                        response: empty,
-                    })
-                    .await
-                {
-                    error!("failed to submit UserInputAnswer: {err}");
-                }
-            }
-        }
        // TODO(celia): properly construct McpToolCall TurnItem in core.
        EventMsg::McpToolCallBegin(begin_event) => {
            let notification = construct_mcp_tool_call_notification(
@@ -338,218 +278,6 @@ pub(crate) async fn apply_bespoke_event_handling(
                .send_server_notification(ServerNotification::ItemCompleted(notification))
                .await;
        }
-        EventMsg::CollabAgentSpawnBegin(begin_event) => {
-            let item = ThreadItem::CollabAgentToolCall {
-                id: begin_event.call_id,
-                tool: CollabAgentTool::SpawnAgent,
-                status: V2CollabToolCallStatus::InProgress,
-                sender_thread_id: begin_event.sender_thread_id.to_string(),
-                receiver_thread_ids: Vec::new(),
-                prompt: Some(begin_event.prompt),
-                agents_states: HashMap::new(),
-            };
-            let notification = ItemStartedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemStarted(notification))
-                .await;
-        }
-        EventMsg::CollabAgentSpawnEnd(end_event) => {
-            let has_receiver = end_event.new_thread_id.is_some();
-            let status = match &end_event.status {
-                codex_protocol::protocol::AgentStatus::Errored(_)
-                | codex_protocol::protocol::AgentStatus::NotFound => V2CollabToolCallStatus::Failed,
-                _ if has_receiver => V2CollabToolCallStatus::Completed,
-                _ => V2CollabToolCallStatus::Failed,
-            };
-            let (receiver_thread_ids, agents_states) = match end_event.new_thread_id {
-                Some(id) => {
-                    let receiver_id = id.to_string();
-                    let received_status = V2CollabAgentStatus::from(end_event.status.clone());
-                    (
-                        vec![receiver_id.clone()],
-                        [(receiver_id, received_status)].into_iter().collect(),
-                    )
-                }
-                None => (Vec::new(), HashMap::new()),
-            };
-            let item = ThreadItem::CollabAgentToolCall {
-                id: end_event.call_id,
-                tool: CollabAgentTool::SpawnAgent,
-                status,
-                sender_thread_id: end_event.sender_thread_id.to_string(),
-                receiver_thread_ids,
-                prompt: Some(end_event.prompt),
-                agents_states,
-            };
-            let notification = ItemCompletedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemCompleted(notification))
-                .await;
-        }
-        EventMsg::CollabAgentInteractionBegin(begin_event) => {
-            let receiver_thread_ids = vec![begin_event.receiver_thread_id.to_string()];
-            let item = ThreadItem::CollabAgentToolCall {
-                id: begin_event.call_id,
-                tool: CollabAgentTool::SendInput,
-                status: V2CollabToolCallStatus::InProgress,
-                sender_thread_id: begin_event.sender_thread_id.to_string(),
-                receiver_thread_ids,
-                prompt: Some(begin_event.prompt),
-                agents_states: HashMap::new(),
-            };
-            let notification = ItemStartedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemStarted(notification))
-                .await;
-        }
-        EventMsg::CollabAgentInteractionEnd(end_event) => {
-            let status = match &end_event.status {
-                codex_protocol::protocol::AgentStatus::Errored(_)
-                | codex_protocol::protocol::AgentStatus::NotFound => V2CollabToolCallStatus::Failed,
-                _ => V2CollabToolCallStatus::Completed,
-            };
-            let receiver_id = end_event.receiver_thread_id.to_string();
-            let received_status = V2CollabAgentStatus::from(end_event.status);
-            let item = ThreadItem::CollabAgentToolCall {
-                id: end_event.call_id,
-                tool: CollabAgentTool::SendInput,
-                status,
-                sender_thread_id: end_event.sender_thread_id.to_string(),
-                receiver_thread_ids: vec![receiver_id.clone()],
-                prompt: Some(end_event.prompt),
-                agents_states: [(receiver_id, received_status)].into_iter().collect(),
-            };
-            let notification = ItemCompletedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemCompleted(notification))
-                .await;
-        }
-        EventMsg::CollabWaitingBegin(begin_event) => {
-            let receiver_thread_ids = begin_event
-                .receiver_thread_ids
-                .iter()
-                .map(ToString::to_string)
-                .collect();
-            let item = ThreadItem::CollabAgentToolCall {
-                id: begin_event.call_id,
-                tool: CollabAgentTool::Wait,
-                status: V2CollabToolCallStatus::InProgress,
-                sender_thread_id: begin_event.sender_thread_id.to_string(),
-                receiver_thread_ids,
-                prompt: None,
-                agents_states: HashMap::new(),
-            };
-            let notification = ItemStartedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemStarted(notification))
-                .await;
-        }
-        EventMsg::CollabWaitingEnd(end_event) => {
-            let status = if end_event.statuses.values().any(|status| {
-                matches!(
-                    status,
-                    codex_protocol::protocol::AgentStatus::Errored(_)
-                        | codex_protocol::protocol::AgentStatus::NotFound
-                )
-            }) {
-                V2CollabToolCallStatus::Failed
-            } else {
-                V2CollabToolCallStatus::Completed
-            };
-            let receiver_thread_ids = end_event.statuses.keys().map(ToString::to_string).collect();
-            let agents_states = end_event
-                .statuses
-                .iter()
-                .map(|(id, status)| (id.to_string(), V2CollabAgentStatus::from(status.clone())))
-                .collect();
-            let item = ThreadItem::CollabAgentToolCall {
-                id: end_event.call_id,
-                tool: CollabAgentTool::Wait,
-                status,
-                sender_thread_id: end_event.sender_thread_id.to_string(),
-                receiver_thread_ids,
-                prompt: None,
-                agents_states,
-            };
-            let notification = ItemCompletedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemCompleted(notification))
-                .await;
-        }
-        EventMsg::CollabCloseBegin(begin_event) => {
-            let item = ThreadItem::CollabAgentToolCall {
-                id: begin_event.call_id,
-                tool: CollabAgentTool::CloseAgent,
-                status: V2CollabToolCallStatus::InProgress,
-                sender_thread_id: begin_event.sender_thread_id.to_string(),
-                receiver_thread_ids: vec![begin_event.receiver_thread_id.to_string()],
-                prompt: None,
-                agents_states: HashMap::new(),
-            };
-            let notification = ItemStartedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemStarted(notification))
-                .await;
-        }
-        EventMsg::CollabCloseEnd(end_event) => {
-            let status = match &end_event.status {
-                codex_protocol::protocol::AgentStatus::Errored(_)
-                | codex_protocol::protocol::AgentStatus::NotFound => V2CollabToolCallStatus::Failed,
-                _ => V2CollabToolCallStatus::Completed,
-            };
-            let receiver_id = end_event.receiver_thread_id.to_string();
-            let agents_states = [(
-                receiver_id.clone(),
-                V2CollabAgentStatus::from(end_event.status),
-            )]
-            .into_iter()
-            .collect();
-            let item = ThreadItem::CollabAgentToolCall {
-                id: end_event.call_id,
-                tool: CollabAgentTool::CloseAgent,
-                status,
-                sender_thread_id: end_event.sender_thread_id.to_string(),
-                receiver_thread_ids: vec![receiver_id],
-                prompt: None,
-                agents_states,
-            };
-            let notification = ItemCompletedNotification {
-                thread_id: conversation_id.to_string(),
-                turn_id: event_turn_id.clone(),
-                item,
-            };
-            outgoing
-                .send_server_notification(ServerNotification::ItemCompleted(notification))
-                .await;
-        }
        EventMsg::AgentMessageContentDelta(event) => {
            let notification = AgentMessageDeltaNotification {
                thread_id: conversation_id.to_string(),
@@ -1404,66 +1132,6 @@ async fn on_exec_approval_response(
    }
 }

-async fn on_request_user_input_response(
-    event_turn_id: String,
-    receiver: oneshot::Receiver<JsonValue>,
-    conversation: Arc<CodexThread>,
-) {
-    let response = receiver.await;
-    let value = match response {
-        Ok(value) => value,
-        Err(err) => {
-            error!("request failed: {err:?}");
-            let empty = CoreRequestUserInputResponse {
-                answers: HashMap::new(),
-            };
-            if let Err(err) = conversation
-                .submit(Op::UserInputAnswer {
-                    id: event_turn_id,
-                    response: empty,
-                })
-                .await
-            {
-                error!("failed to submit UserInputAnswer: {err}");
-            }
-            return;
-        }
-    };
-
-    let response =
-        serde_json::from_value::<ToolRequestUserInputResponse>(value).unwrap_or_else(|err| {
-            error!("failed to deserialize ToolRequestUserInputResponse: {err}");
-            ToolRequestUserInputResponse {
-                answers: HashMap::new(),
-            }
-        });
-    let response = CoreRequestUserInputResponse {
-        answers: response
-            .answers
-            .into_iter()
-            .map(|(id, answer)| {
-                (
-                    id,
-                    CoreRequestUserInputAnswer {
-                        selected: answer.selected,
-                        other: answer.other,
-                    },
-                )
-            })
-            .collect(),
-    };
-
-    if let Err(err) = conversation
-        .submit(Op::UserInputAnswer {
-            id: event_turn_id,
-            response,
-        })
-        .await
-    {
-        error!("failed to submit UserInputAnswer: {err}");
-    }
-}
-
 const REVIEW_FALLBACK_MESSAGE: &str = "Reviewer failed to output a response.";

 fn render_review_output_text(output: &ReviewOutputEvent) -> String {
--- a/codex-rs/app-server/src/codex_message_processor.rs
+++ b/codex-rs/app-server/src/codex_message_processor.rs
--- a/codex-rs/app-server/src/config_api.rs
+++ b/codex-rs/app-server/src/config_api.rs
@@ -3,18 +3,13 @@ use crate::error_code::INVALID_REQUEST_ERROR_CODE;
 use codex_app_server_protocol::ConfigBatchWriteParams;
 use codex_app_server_protocol::ConfigReadParams;
 use codex_app_server_protocol::ConfigReadResponse;
-use codex_app_server_protocol::ConfigRequirements;
-use codex_app_server_protocol::ConfigRequirementsReadResponse;
 use codex_app_server_protocol::ConfigValueWriteParams;
 use codex_app_server_protocol::ConfigWriteErrorCode;
 use codex_app_server_protocol::ConfigWriteResponse;
 use codex_app_server_protocol::JSONRPCErrorError;
-use codex_app_server_protocol::SandboxMode;
 use codex_core::config::ConfigService;
 use codex_core::config::ConfigServiceError;
-use codex_core::config_loader::ConfigRequirementsToml;
 use codex_core::config_loader::LoaderOverrides;
-use codex_core::config_loader::SandboxModeRequirement as CoreSandboxModeRequirement;
 use serde_json::json;
 use std::path::PathBuf;
 use toml::Value as TomlValue;
@@ -42,19 +37,6 @@ impl ConfigApi {
        self.service.read(params).await.map_err(map_error)
    }

-    pub(crate) async fn config_requirements_read(
-        &self,
-    ) -> Result<ConfigRequirementsReadResponse, JSONRPCErrorError> {
-        let requirements = self
-            .service
-            .read_requirements()
-            .await
-            .map_err(map_error)?
-            .map(map_requirements_toml_to_api);
-
-        Ok(ConfigRequirementsReadResponse { requirements })
-    }
-
    pub(crate) async fn write_value(
        &self,
        params: ConfigValueWriteParams,
@@ -70,32 +52,6 @@ impl ConfigApi {
    }
 }

-fn map_requirements_toml_to_api(requirements: ConfigRequirementsToml) -> ConfigRequirements {
-    ConfigRequirements {
-        allowed_approval_policies: requirements.allowed_approval_policies.map(|policies| {
-            policies
-                .into_iter()
-                .map(codex_app_server_protocol::AskForApproval::from)
-                .collect()
-        }),
-        allowed_sandbox_modes: requirements.allowed_sandbox_modes.map(|modes| {
-            modes
-                .into_iter()
-                .filter_map(map_sandbox_mode_requirement_to_api)
-                .collect()
-        }),
-    }
-}
-
-fn map_sandbox_mode_requirement_to_api(mode: CoreSandboxModeRequirement) -> Option<SandboxMode> {
-    match mode {
-        CoreSandboxModeRequirement::ReadOnly => Some(SandboxMode::ReadOnly),
-        CoreSandboxModeRequirement::WorkspaceWrite => Some(SandboxMode::WorkspaceWrite),
-        CoreSandboxModeRequirement::DangerFullAccess => Some(SandboxMode::DangerFullAccess),
-        CoreSandboxModeRequirement::ExternalSandbox => None,
-    }
-}
-
 fn map_error(err: ConfigServiceError) -> JSONRPCErrorError {
    if let Some(code) = err.write_error_code() {
        return config_write_error(code, err.to_string());
@@ -117,39 +73,3 @@ fn config_write_error(code: ConfigWriteErrorCode, message: impl Into<String>) ->
        })),
    }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use codex_protocol::protocol::AskForApproval as CoreAskForApproval;
-    use pretty_assertions::assert_eq;
-
-    #[test]
-    fn map_requirements_toml_to_api_converts_core_enums() {
-        let requirements = ConfigRequirementsToml {
-            allowed_approval_policies: Some(vec![
-                CoreAskForApproval::Never,
-                CoreAskForApproval::OnRequest,
-            ]),
-            allowed_sandbox_modes: Some(vec![
-                CoreSandboxModeRequirement::ReadOnly,
-                CoreSandboxModeRequirement::ExternalSandbox,
-            ]),
-            mcp_servers: None,
-        };
-
-        let mapped = map_requirements_toml_to_api(requirements);
-
-        assert_eq!(
-            mapped.allowed_approval_policies,
-            Some(vec![
-                codex_app_server_protocol::AskForApproval::Never,
-                codex_app_server_protocol::AskForApproval::OnRequest,
-            ])
-        );
-        assert_eq!(
-            mapped.allowed_sandbox_modes,
-            Some(vec![SandboxMode::ReadOnly]),
-        );
-    }
-}
--- a/codex-rs/app-server/src/lib.rs
+++ b/codex-rs/app-server/src/lib.rs
@@ -1,7 +1,6 @@
 #![deny(clippy::print_stdout, clippy::print_stderr)]

 use codex_common::CliConfigOverrides;
-use codex_core::config::Config;
 use codex_core::config::ConfigBuilder;
 use codex_core::config_loader::LoaderOverrides;
 use std::io::ErrorKind;
@@ -11,9 +10,7 @@ use std::path::PathBuf;
 use crate::message_processor::MessageProcessor;
 use crate::outgoing_message::OutgoingMessage;
 use crate::outgoing_message::OutgoingMessageSender;
-use codex_app_server_protocol::ConfigWarningNotification;
 use codex_app_server_protocol::JSONRPCMessage;
-use codex_core::check_execpolicy_for_warnings;
 use codex_feedback::CodexFeedback;
 use tokio::io::AsyncBufReadExt;
 use tokio::io::AsyncWriteExt;
@@ -24,7 +21,6 @@ use toml::Value as TomlValue;
 use tracing::debug;
 use tracing::error;
 use tracing::info;
-use tracing::warn;
 use tracing_subscriber::EnvFilter;
 use tracing_subscriber::Layer;
 use tracing_subscriber::layer::SubscriberExt;
@@ -48,7 +44,6 @@ pub async fn run_main(
    codex_linux_sandbox_exe: Option<PathBuf>,
    cli_config_overrides: CliConfigOverrides,
    loader_overrides: LoaderOverrides,
-    default_analytics_enabled: bool,
 ) -> IoResult<()> {
    // Set up channels.
    let (incoming_tx, mut incoming_rx) = mpsc::channel::<JSONRPCMessage>(CHANNEL_CAPACITY);
@@ -86,53 +81,24 @@ pub async fn run_main(
        )
    })?;
    let loader_overrides_for_config_api = loader_overrides.clone();
-    let mut config_warnings = Vec::new();
-    let config = match ConfigBuilder::default()
+    let config = ConfigBuilder::default()
        .cli_overrides(cli_kv_overrides.clone())
        .loader_overrides(loader_overrides)
        .build()
        .await
-    {
-        Ok(config) => config,
-        Err(err) => {
-            let message = ConfigWarningNotification {
-                summary: "Invalid configuration; using defaults.".to_string(),
-                details: Some(err.to_string()),
-            };
-            config_warnings.push(message);
-            Config::load_default_with_cli_overrides(cli_kv_overrides.clone()).map_err(|e| {
-                std::io::Error::new(
-                    ErrorKind::InvalidData,
-                    format!("error loading default config after config error: {e}"),
-                )
-            })?
-        }
-    };
-
-    if let Ok(Some(err)) =
-        check_execpolicy_for_warnings(&config.features, &config.config_layer_stack).await
-    {
-        let message = ConfigWarningNotification {
-            summary: "Error parsing rules; custom rules not applied.".to_string(),
-            details: Some(err.to_string()),
-        };
-        config_warnings.push(message);
-    }
+        .map_err(|e| {
+            std::io::Error::new(ErrorKind::InvalidData, format!("error loading config: {e}"))
+        })?;

    let feedback = CodexFeedback::new();

-    let otel = codex_core::otel_init::build_provider(
-        &config,
-        env!("CARGO_PKG_VERSION"),
-        Some("codex_app_server"),
-        default_analytics_enabled,
-    )
-    .map_err(|e| {
-        std::io::Error::new(
-            ErrorKind::InvalidData,
-            format!("error loading otel config: {e}"),
-        )
-    })?;
+    let otel =
+        codex_core::otel_init::build_provider(&config, env!("CARGO_PKG_VERSION")).map_err(|e| {
+            std::io::Error::new(
+                ErrorKind::InvalidData,
+                format!("error loading otel config: {e}"),
+            )
+        })?;

    // Install a simple subscriber so `tracing` output is visible.  Users can
    // control the log level with `RUST_LOG`.
@@ -155,12 +121,6 @@ pub async fn run_main(
        .with(otel_logger_layer)
        .with(otel_tracing_layer)
        .try_init();
-    for warning in &config_warnings {
-        match &warning.details {
-            Some(details) => error!("{} {}", warning.summary, details),
-            None => error!("{}", warning.summary),
-        }
-    }

    // Task: process incoming messages.
    let processor_handle = tokio::spawn({
@@ -174,41 +134,14 @@ pub async fn run_main(
            cli_overrides,
            loader_overrides,
            feedback.clone(),
-            config_warnings,
        );
-        let mut thread_created_rx = processor.thread_created_receiver();
        async move {
-            let mut listen_for_threads = true;
-            loop {
-                tokio::select! {
-                    msg = incoming_rx.recv() => {
-                        let Some(msg) = msg else {
-                            break;
-                        };
-                        match msg {
-                            JSONRPCMessage::Request(r) => processor.process_request(r).await,
-                            JSONRPCMessage::Response(r) => processor.process_response(r).await,
-                            JSONRPCMessage::Notification(n) => processor.process_notification(n).await,
-                            JSONRPCMessage::Error(e) => processor.process_error(e),
-                        }
-                    }
-                    created = thread_created_rx.recv(), if listen_for_threads => {
-                        match created {
-                            Ok(thread_id) => {
-                                processor.try_attach_thread_listener(thread_id).await;
-                            }
-                            Err(tokio::sync::broadcast::error::RecvError::Lagged(_)) => {
-                                // TODO(jif) handle lag.
-                                // Assumes thread creation volume is low enough that lag never happens.
-                                // If it does, we log and continue without resyncing to avoid attaching
-                                // listeners for threads that should remain unsubscribed.
-                                warn!("thread_created receiver lagged; skipping resync");
-                            }
-                            Err(tokio::sync::broadcast::error::RecvError::Closed) => {
-                                listen_for_threads = false;
-                            }
-                        }
-                    }
+            while let Some(msg) = incoming_rx.recv().await {
+                match msg {
+                    JSONRPCMessage::Request(r) => processor.process_request(r).await,
+                    JSONRPCMessage::Response(r) => processor.process_response(r).await,
+                    JSONRPCMessage::Notification(n) => processor.process_notification(n).await,
+                    JSONRPCMessage::Error(e) => processor.process_error(e),
                }
            }

--- a/codex-rs/app-server/src/main.rs
+++ b/codex-rs/app-server/src/main.rs
@@ -20,7 +20,6 @@ fn main() -> anyhow::Result<()> {
            codex_linux_sandbox_exe,
            CliConfigOverrides::default(),
            loader_overrides,
-            false,
        )
        .await?;
        Ok(())
--- a/codex-rs/app-server/src/message_processor.rs
+++ b/codex-rs/app-server/src/message_processor.rs
@@ -10,7 +10,6 @@ use codex_app_server_protocol::ClientRequest;
 use codex_app_server_protocol::ConfigBatchWriteParams;
 use codex_app_server_protocol::ConfigReadParams;
 use codex_app_server_protocol::ConfigValueWriteParams;
-use codex_app_server_protocol::ConfigWarningNotification;
 use codex_app_server_protocol::InitializeResponse;
 use codex_app_server_protocol::JSONRPCError;
 use codex_app_server_protocol::JSONRPCErrorError;
@@ -18,19 +17,14 @@ use codex_app_server_protocol::JSONRPCNotification;
 use codex_app_server_protocol::JSONRPCRequest;
 use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::RequestId;
-use codex_app_server_protocol::ServerNotification;
 use codex_core::AuthManager;
 use codex_core::ThreadManager;
 use codex_core::config::Config;
 use codex_core::config_loader::LoaderOverrides;
-use codex_core::default_client::SetOriginatorError;
 use codex_core::default_client::USER_AGENT_SUFFIX;
 use codex_core::default_client::get_codex_user_agent;
-use codex_core::default_client::set_default_originator;
 use codex_feedback::CodexFeedback;
-use codex_protocol::ThreadId;
 use codex_protocol::protocol::SessionSource;
-use tokio::sync::broadcast;
 use toml::Value as TomlValue;

 pub(crate) struct MessageProcessor {
@@ -38,7 +32,6 @@ pub(crate) struct MessageProcessor {
    codex_message_processor: CodexMessageProcessor,
    config_api: ConfigApi,
    initialized: bool,
-    config_warnings: Vec<ConfigWarningNotification>,
 }

 impl MessageProcessor {
@@ -51,7 +44,6 @@ impl MessageProcessor {
        cli_overrides: Vec<(String, TomlValue)>,
        loader_overrides: LoaderOverrides,
        feedback: CodexFeedback,
-        config_warnings: Vec<ConfigWarningNotification>,
    ) -> Self {
        let outgoing = Arc::new(outgoing);
        let auth_manager = AuthManager::shared(
@@ -80,7 +72,6 @@ impl MessageProcessor {
            codex_message_processor,
            config_api,
            initialized: false,
-            config_warnings,
        }
    }

@@ -130,27 +121,6 @@ impl MessageProcessor {
                        title: _title,
                        version,
                    } = params.client_info;
-                    if let Err(error) = set_default_originator(name.clone()) {
-                        match error {
-                            SetOriginatorError::InvalidHeaderValue => {
-                                let error = JSONRPCErrorError {
-                                    code: INVALID_REQUEST_ERROR_CODE,
-                                    message: format!(
-                                        "Invalid clientInfo.name: '{name}'. Must be a valid HTTP header value."
-                                    ),
-                                    data: None,
-                                };
-                                self.outgoing.send_error(request_id, error).await;
-                                return;
-                            }
-                            SetOriginatorError::AlreadyInitialized => {
-                                // No-op. This is expected to happen if the originator is already set via env var.
-                                // TODO(owen): Once we remove support for CODEX_INTERNAL_ORIGINATOR_OVERRIDE,
-                                // this will be an unexpected state and we can return a JSON-RPC error indicating
-                                // internal server error.
-                            }
-                        }
-                    }
                    let user_agent_suffix = format!("{name}; {version}");
                    if let Ok(mut suffix) = USER_AGENT_SUFFIX.lock() {
                        *suffix = Some(user_agent_suffix);
@@ -161,15 +131,6 @@ impl MessageProcessor {
                    self.outgoing.send_response(request_id, response).await;

                    self.initialized = true;
-                    if !self.config_warnings.is_empty() {
-                        for notification in self.config_warnings.drain(..) {
-                            self.outgoing
-                                .send_server_notification(ServerNotification::ConfigWarning(
-                                    notification,
-                                ))
-                                .await;
-                        }
-                    }

                    return;
                }
@@ -197,12 +158,6 @@ impl MessageProcessor {
            ClientRequest::ConfigBatchWrite { request_id, params } => {
                self.handle_config_batch_write(request_id, params).await;
            }
-            ClientRequest::ConfigRequirementsRead {
-                request_id,
-                params: _,
-            } => {
-                self.handle_config_requirements_read(request_id).await;
-            }
            other => {
                self.codex_message_processor.process_request(other).await;
            }
@@ -215,19 +170,6 @@ impl MessageProcessor {
        tracing::info!("<- notification: {:?}", notification);
    }

-    pub(crate) fn thread_created_receiver(&self) -> broadcast::Receiver<ThreadId> {
-        self.codex_message_processor.thread_created_receiver()
-    }
-
-    pub(crate) async fn try_attach_thread_listener(&mut self, thread_id: ThreadId) {
-        if !self.initialized {
-            return;
-        }
-        self.codex_message_processor
-            .try_attach_thread_listener(thread_id)
-            .await;
-    }
-
    /// Handle a standalone JSON-RPC response originating from the peer.
    pub(crate) async fn process_response(&mut self, response: JSONRPCResponse) {
        tracing::info!("<- response: {:?}", response);
@@ -268,11 +210,4 @@ impl MessageProcessor {
            Err(error) => self.outgoing.send_error(request_id, error).await,
        }
    }
-
-    async fn handle_config_requirements_read(&self, request_id: RequestId) {
-        match self.config_api.config_requirements_read().await {
-            Ok(response) => self.outgoing.send_response(request_id, response).await,
-            Err(error) => self.outgoing.send_error(request_id, error).await,
-        }
-    }
 }
--- a/codex-rs/app-server/src/models.rs
+++ b/codex-rs/app-server/src/models.rs
@@ -4,13 +4,12 @@ use codex_app_server_protocol::Model;
 use codex_app_server_protocol::ReasoningEffortOption;
 use codex_core::ThreadManager;
 use codex_core::config::Config;
-use codex_core::models_manager::manager::RefreshStrategy;
 use codex_protocol::openai_models::ModelPreset;
 use codex_protocol::openai_models::ReasoningEffortPreset;

 pub async fn supported_models(thread_manager: Arc<ThreadManager>, config: &Config) -> Vec<Model> {
    thread_manager
-        .list_models(config, RefreshStrategy::OnlineIfUncached)
+        .list_models(config)
        .await
        .into_iter()
        .filter(|preset| preset.show_in_picker)
--- a/codex-rs/app-server/src/outgoing_message.rs
+++ b/codex-rs/app-server/src/outgoing_message.rs
@@ -162,7 +162,6 @@ mod tests {
    use codex_app_server_protocol::AccountRateLimitsUpdatedNotification;
    use codex_app_server_protocol::AccountUpdatedNotification;
    use codex_app_server_protocol::AuthMode;
-    use codex_app_server_protocol::ConfigWarningNotification;
    use codex_app_server_protocol::LoginChatGptCompleteNotification;
    use codex_app_server_protocol::RateLimitSnapshot;
    use codex_app_server_protocol::RateLimitWindow;
@@ -280,26 +279,4 @@ mod tests {
            "ensure the notification serializes correctly"
        );
    }
-
-    #[test]
-    fn verify_config_warning_notification_serialization() {
-        let notification = ServerNotification::ConfigWarning(ConfigWarningNotification {
-            summary: "Config error: using defaults".to_string(),
-            details: Some("error loading config: bad config".to_string()),
-        });
-
-        let jsonrpc_notification = OutgoingMessage::AppServerNotification(notification);
-        assert_eq!(
-            json!( {
-                "method": "configWarning",
-                "params": {
-                    "summary": "Config error: using defaults",
-                    "details": "error loading config: bad config",
-                },
-            }),
-            serde_json::to_value(jsonrpc_notification)
-                .expect("ensure the notification serializes correctly"),
-            "ensure the notification serializes correctly"
-        );
-    }
 }
--- a/codex-rs/app-server/tests/common/BUILD.bazel
+++ b/codex-rs/app-server/tests/common/BUILD.bazel
@@ -1,7 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "common",
-    crate_name = "app_test_support",
-    crate_srcs = glob(["*.rs"]),
-)
--- a/codex-rs/app-server/tests/common/lib.rs
+++ b/codex-rs/app-server/tests/common/lib.rs
@@ -17,21 +17,16 @@ pub use core_test_support::format_with_current_shell_non_login;
 pub use core_test_support::test_path_buf_with_windows;
 pub use core_test_support::test_tmp_path;
 pub use core_test_support::test_tmp_path_buf;
-pub use mcp_process::DEFAULT_CLIENT_NAME;
 pub use mcp_process::McpProcess;
-pub use mock_model_server::create_mock_responses_server_repeating_assistant;
-pub use mock_model_server::create_mock_responses_server_sequence;
-pub use mock_model_server::create_mock_responses_server_sequence_unchecked;
+pub use mock_model_server::create_mock_chat_completions_server;
+pub use mock_model_server::create_mock_chat_completions_server_unchecked;
 pub use models_cache::write_models_cache;
 pub use models_cache::write_models_cache_with_models;
 pub use responses::create_apply_patch_sse_response;
 pub use responses::create_exec_command_sse_response;
 pub use responses::create_final_assistant_message_sse_response;
-pub use responses::create_request_user_input_sse_response;
 pub use responses::create_shell_command_sse_response;
 pub use rollout::create_fake_rollout;
-pub use rollout::create_fake_rollout_with_text_elements;
-pub use rollout::rollout_path;
 use serde::de::DeserializeOwned;

 pub fn to_response<T: DeserializeOwned>(response: JSONRPCResponse) -> anyhow::Result<T> {
--- a/codex-rs/app-server/tests/common/mcp_process.rs
+++ b/codex-rs/app-server/tests/common/mcp_process.rs
@@ -17,12 +17,10 @@ use codex_app_server_protocol::CancelLoginAccountParams;
 use codex_app_server_protocol::CancelLoginChatGptParams;
 use codex_app_server_protocol::ClientInfo;
 use codex_app_server_protocol::ClientNotification;
-use codex_app_server_protocol::CollaborationModeListParams;
 use codex_app_server_protocol::ConfigBatchWriteParams;
 use codex_app_server_protocol::ConfigReadParams;
 use codex_app_server_protocol::ConfigValueWriteParams;
 use codex_app_server_protocol::FeedbackUploadParams;
-use codex_app_server_protocol::ForkConversationParams;
 use codex_app_server_protocol::GetAccountParams;
 use codex_app_server_protocol::GetAuthStatusParams;
 use codex_app_server_protocol::InitializeParams;
@@ -45,9 +43,7 @@ use codex_app_server_protocol::SendUserTurnParams;
 use codex_app_server_protocol::ServerRequest;
 use codex_app_server_protocol::SetDefaultModelParams;
 use codex_app_server_protocol::ThreadArchiveParams;
-use codex_app_server_protocol::ThreadForkParams;
 use codex_app_server_protocol::ThreadListParams;
-use codex_app_server_protocol::ThreadLoadedListParams;
 use codex_app_server_protocol::ThreadResumeParams;
 use codex_app_server_protocol::ThreadRollbackParams;
 use codex_app_server_protocol::ThreadStartParams;
@@ -64,11 +60,9 @@ pub struct McpProcess {
    process: Child,
    stdin: ChildStdin,
    stdout: BufReader<ChildStdout>,
-    pending_messages: VecDeque<JSONRPCMessage>,
+    pending_user_messages: VecDeque<JSONRPCNotification>,
 }

-pub const DEFAULT_CLIENT_NAME: &str = "codex-app-server-tests";
-
 impl McpProcess {
    pub async fn new(codex_home: &Path) -> anyhow::Result<Self> {
        Self::new_with_env(codex_home, &[]).await
@@ -133,66 +127,37 @@ impl McpProcess {
            process,
            stdin,
            stdout,
-            pending_messages: VecDeque::new(),
+            pending_user_messages: VecDeque::new(),
        })
    }

    /// Performs the initialization handshake with the MCP server.
    pub async fn initialize(&mut self) -> anyhow::Result<()> {
-        let initialized = self
-            .initialize_with_client_info(ClientInfo {
-                name: DEFAULT_CLIENT_NAME.to_string(),
+        let params = Some(serde_json::to_value(InitializeParams {
+            client_info: ClientInfo {
+                name: "codex-app-server-tests".to_string(),
                title: None,
                version: "0.1.0".to_string(),
-            })
-            .await?;
-        let JSONRPCMessage::Response(_) = initialized else {
+            },
+        })?);
+        let req_id = self.send_request("initialize", params).await?;
+        let initialized = self.read_jsonrpc_message().await?;
+        let JSONRPCMessage::Response(response) = initialized else {
            unreachable!("expected JSONRPCMessage::Response for initialize, got {initialized:?}");
        };
-        Ok(())
-    }
-
-    /// Sends initialize with the provided client info and returns the response/error message.
-    pub async fn initialize_with_client_info(
-        &mut self,
-        client_info: ClientInfo,
-    ) -> anyhow::Result<JSONRPCMessage> {
-        let params = Some(serde_json::to_value(InitializeParams { client_info })?);
-        let request_id = self.send_request("initialize", params).await?;
-        let message = self.read_jsonrpc_message().await?;
-        match message {
-            JSONRPCMessage::Response(response) => {
-                if response.id != RequestId::Integer(request_id) {
-                    anyhow::bail!(
-                        "initialize response id mismatch: expected {}, got {:?}",
-                        request_id,
-                        response.id
-                    );
-                }
-
-                // Send notifications/initialized to ack the response.
-                self.send_notification(ClientNotification::Initialized)
-                    .await?;
-
-                Ok(JSONRPCMessage::Response(response))
-            }
-            JSONRPCMessage::Error(error) => {
-                if error.id != RequestId::Integer(request_id) {
-                    anyhow::bail!(
-                        "initialize error id mismatch: expected {}, got {:?}",
-                        request_id,
-                        error.id
-                    );
-                }
-                Ok(JSONRPCMessage::Error(error))
-            }
-            JSONRPCMessage::Notification(notification) => {
-                anyhow::bail!("unexpected JSONRPCMessage::Notification: {notification:?}");
-            }
-            JSONRPCMessage::Request(request) => {
-                anyhow::bail!("unexpected JSONRPCMessage::Request: {request:?}");
-            }
+        if response.id != RequestId::Integer(req_id) {
+            anyhow::bail!(
+                "initialize response id mismatch: expected {}, got {:?}",
+                req_id,
+                response.id
+            );
        }
+
+        // Send notifications/initialized to ack the response.
+        self.send_notification(ClientNotification::Initialized)
+            .await?;
+
+        Ok(())
    }

    /// Send a `newConversation` JSON-RPC request.
@@ -343,15 +308,6 @@ impl McpProcess {
        self.send_request("thread/resume", params).await
    }

-    /// Send a `thread/fork` JSON-RPC request.
-    pub async fn send_thread_fork_request(
-        &mut self,
-        params: ThreadForkParams,
-    ) -> anyhow::Result<i64> {
-        let params = Some(serde_json::to_value(params)?);
-        self.send_request("thread/fork", params).await
-    }
-
    /// Send a `thread/archive` JSON-RPC request.
    pub async fn send_thread_archive_request(
        &mut self,
@@ -379,15 +335,6 @@ impl McpProcess {
        self.send_request("thread/list", params).await
    }

-    /// Send a `thread/loaded/list` JSON-RPC request.
-    pub async fn send_thread_loaded_list_request(
-        &mut self,
-        params: ThreadLoadedListParams,
-    ) -> anyhow::Result<i64> {
-        let params = Some(serde_json::to_value(params)?);
-        self.send_request("thread/loaded/list", params).await
-    }
-
    /// Send a `model/list` JSON-RPC request.
    pub async fn send_list_models_request(
        &mut self,
@@ -397,15 +344,6 @@ impl McpProcess {
        self.send_request("model/list", params).await
    }

-    /// Send a `collaborationMode/list` JSON-RPC request.
-    pub async fn send_list_collaboration_modes_request(
-        &mut self,
-        params: CollaborationModeListParams,
-    ) -> anyhow::Result<i64> {
-        let params = Some(serde_json::to_value(params)?);
-        self.send_request("collaborationMode/list", params).await
-    }
-
    /// Send a `resumeConversation` JSON-RPC request.
    pub async fn send_resume_conversation_request(
        &mut self,
@@ -415,15 +353,6 @@ impl McpProcess {
        self.send_request("resumeConversation", params).await
    }

-    /// Send a `forkConversation` JSON-RPC request.
-    pub async fn send_fork_conversation_request(
-        &mut self,
-        params: ForkConversationParams,
-    ) -> anyhow::Result<i64> {
-        let params = Some(serde_json::to_value(params)?);
-        self.send_request("forkConversation", params).await
-    }
-
    /// Send a `loginApiKey` JSON-RPC request.
    pub async fn send_login_api_key_request(
        &mut self,
@@ -615,16 +544,27 @@ impl McpProcess {
    pub async fn read_stream_until_request_message(&mut self) -> anyhow::Result<ServerRequest> {
        eprintln!("in read_stream_until_request_message()");

-        let message = self
-            .read_stream_until_message(|message| matches!(message, JSONRPCMessage::Request(_)))
-            .await?;
+        loop {
+            let message = self.read_jsonrpc_message().await?;

-        let JSONRPCMessage::Request(jsonrpc_request) = message else {
-            unreachable!("expected JSONRPCMessage::Request, got {message:?}");
-        };
-        jsonrpc_request
-            .try_into()
-            .with_context(|| "failed to deserialize ServerRequest from JSONRPCRequest")
+            match message {
+                JSONRPCMessage::Notification(notification) => {
+                    eprintln!("notification: {notification:?}");
+                    self.enqueue_user_message(notification);
+                }
+                JSONRPCMessage::Request(jsonrpc_request) => {
+                    return jsonrpc_request.try_into().with_context(
+                        || "failed to deserialize ServerRequest from JSONRPCRequest",
+                    );
+                }
+                JSONRPCMessage::Error(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Error: {message:?}");
+                }
+                JSONRPCMessage::Response(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Response: {message:?}");
+                }
+            }
+        }
    }

    pub async fn read_stream_until_response_message(
@@ -633,32 +573,52 @@ impl McpProcess {
    ) -> anyhow::Result<JSONRPCResponse> {
        eprintln!("in read_stream_until_response_message({request_id:?})");

-        let message = self
-            .read_stream_until_message(|message| {
-                Self::message_request_id(message) == Some(&request_id)
-            })
-            .await?;
-
-        let JSONRPCMessage::Response(response) = message else {
-            unreachable!("expected JSONRPCMessage::Response, got {message:?}");
-        };
-        Ok(response)
+        loop {
+            let message = self.read_jsonrpc_message().await?;
+            match message {
+                JSONRPCMessage::Notification(notification) => {
+                    eprintln!("notification: {notification:?}");
+                    self.enqueue_user_message(notification);
+                }
+                JSONRPCMessage::Request(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Request: {message:?}");
+                }
+                JSONRPCMessage::Error(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Error: {message:?}");
+                }
+                JSONRPCMessage::Response(jsonrpc_response) => {
+                    if jsonrpc_response.id == request_id {
+                        return Ok(jsonrpc_response);
+                    }
+                }
+            }
+        }
    }

    pub async fn read_stream_until_error_message(
        &mut self,
        request_id: RequestId,
    ) -> anyhow::Result<JSONRPCError> {
-        let message = self
-            .read_stream_until_message(|message| {
-                Self::message_request_id(message) == Some(&request_id)
-            })
-            .await?;
-
-        let JSONRPCMessage::Error(err) = message else {
-            unreachable!("expected JSONRPCMessage::Error, got {message:?}");
-        };
-        Ok(err)
+        loop {
+            let message = self.read_jsonrpc_message().await?;
+            match message {
+                JSONRPCMessage::Notification(notification) => {
+                    eprintln!("notification: {notification:?}");
+                    self.enqueue_user_message(notification);
+                }
+                JSONRPCMessage::Request(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Request: {message:?}");
+                }
+                JSONRPCMessage::Response(_) => {
+                    // Keep scanning; we're waiting for an error with matching id.
+                }
+                JSONRPCMessage::Error(err) => {
+                    if err.id == request_id {
+                        return Ok(err);
+                    }
+                }
+            }
+        }
    }

    pub async fn read_stream_until_notification_message(
@@ -667,64 +627,46 @@ impl McpProcess {
    ) -> anyhow::Result<JSONRPCNotification> {
        eprintln!("in read_stream_until_notification_message({method})");

-        let message = self
-            .read_stream_until_message(|message| {
-                matches!(
-                    message,
-                    JSONRPCMessage::Notification(notification) if notification.method == method
-                )
-            })
-            .await?;
-
-        let JSONRPCMessage::Notification(notification) = message else {
-            unreachable!("expected JSONRPCMessage::Notification, got {message:?}");
-        };
-        Ok(notification)
-    }
-
-    /// Clears any buffered messages so future reads only consider new stream items.
-    ///
-    /// We call this when e.g. we want to validate against the next turn and no longer care about
-    /// messages buffered from the prior turn.
-    pub fn clear_message_buffer(&mut self) {
-        self.pending_messages.clear();
-    }
-
-    /// Reads the stream until a message matches `predicate`, buffering any non-matching messages
-    /// for later reads.
-    async fn read_stream_until_message<F>(&mut self, predicate: F) -> anyhow::Result<JSONRPCMessage>
-    where
-        F: Fn(&JSONRPCMessage) -> bool,
-    {
-        if let Some(message) = self.take_pending_message(&predicate) {
-            return Ok(message);
+        if let Some(notification) = self.take_pending_notification_by_method(method) {
+            return Ok(notification);
        }

        loop {
            let message = self.read_jsonrpc_message().await?;
-            if predicate(&message) {
-                return Ok(message);
+            match message {
+                JSONRPCMessage::Notification(notification) => {
+                    if notification.method == method {
+                        return Ok(notification);
+                    }
+                    self.enqueue_user_message(notification);
+                }
+                JSONRPCMessage::Request(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Request: {message:?}");
+                }
+                JSONRPCMessage::Error(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Error: {message:?}");
+                }
+                JSONRPCMessage::Response(_) => {
+                    anyhow::bail!("unexpected JSONRPCMessage::Response: {message:?}");
+                }
            }
-            self.pending_messages.push_back(message);
        }
    }

-    fn take_pending_message<F>(&mut self, predicate: &F) -> Option<JSONRPCMessage>
-    where
-        F: Fn(&JSONRPCMessage) -> bool,
-    {
-        if let Some(pos) = self.pending_messages.iter().position(predicate) {
-            return self.pending_messages.remove(pos);
+    fn take_pending_notification_by_method(&mut self, method: &str) -> Option<JSONRPCNotification> {
+        if let Some(pos) = self
+            .pending_user_messages
+            .iter()
+            .position(|notification| notification.method == method)
+        {
+            return self.pending_user_messages.remove(pos);
        }
        None
    }

-    fn message_request_id(message: &JSONRPCMessage) -> Option<&RequestId> {
-        match message {
-            JSONRPCMessage::Request(request) => Some(&request.id),
-            JSONRPCMessage::Response(response) => Some(&response.id),
-            JSONRPCMessage::Error(err) => Some(&err.id),
-            JSONRPCMessage::Notification(_) => None,
+    fn enqueue_user_message(&mut self, notification: JSONRPCNotification) {
+        if notification.method == "codex/event/user_message" {
+            self.pending_user_messages.push_back(notification);
        }
    }
 }
--- a/codex-rs/app-server/tests/common/mock_model_server.rs
+++ b/codex-rs/app-server/tests/common/mock_model_server.rs
@@ -1,18 +1,17 @@
 use std::sync::atomic::AtomicUsize;
 use std::sync::atomic::Ordering;

-use core_test_support::responses;
 use wiremock::Mock;
 use wiremock::MockServer;
 use wiremock::Respond;
 use wiremock::ResponseTemplate;
 use wiremock::matchers::method;
-use wiremock::matchers::path_regex;
+use wiremock::matchers::path;

 /// Create a mock server that will provide the responses, in order, for
-/// requests to the `/v1/responses` endpoint.
-pub async fn create_mock_responses_server_sequence(responses: Vec<String>) -> MockServer {
-    let server = responses::start_mock_server().await;
+/// requests to the `/v1/chat/completions` endpoint.
+pub async fn create_mock_chat_completions_server(responses: Vec<String>) -> MockServer {
+    let server = MockServer::start().await;

    let num_calls = responses.len();
    let seq_responder = SeqResponder {
@@ -21,7 +20,7 @@ pub async fn create_mock_responses_server_sequence(responses: Vec<String>) -> Mo
    };

    Mock::given(method("POST"))
-        .and(path_regex(".*/responses$"))
+        .and(path("/v1/chat/completions"))
        .respond_with(seq_responder)
        .expect(num_calls as u64)
        .mount(&server)
@@ -30,10 +29,10 @@ pub async fn create_mock_responses_server_sequence(responses: Vec<String>) -> Mo
    server
 }

-/// Same as `create_mock_responses_server_sequence` but does not enforce an
+/// Same as `create_mock_chat_completions_server` but does not enforce an
 /// expectation on the number of calls.
-pub async fn create_mock_responses_server_sequence_unchecked(responses: Vec<String>) -> MockServer {
-    let server = responses::start_mock_server().await;
+pub async fn create_mock_chat_completions_server_unchecked(responses: Vec<String>) -> MockServer {
+    let server = MockServer::start().await;

    let seq_responder = SeqResponder {
        num_calls: AtomicUsize::new(0),
@@ -41,7 +40,7 @@ pub async fn create_mock_responses_server_sequence_unchecked(responses: Vec<Stri
    };

    Mock::given(method("POST"))
-        .and(path_regex(".*/responses$"))
+        .and(path("/v1/chat/completions"))
        .respond_with(seq_responder)
        .mount(&server)
        .await;
@@ -58,24 +57,10 @@ impl Respond for SeqResponder {
    fn respond(&self, _: &wiremock::Request) -> ResponseTemplate {
        let call_num = self.num_calls.fetch_add(1, Ordering::SeqCst);
        match self.responses.get(call_num) {
-            Some(response) => responses::sse_response(response.clone()),
+            Some(response) => ResponseTemplate::new(200)
+                .insert_header("content-type", "text/event-stream")
+                .set_body_raw(response.clone(), "text/event-stream"),
            None => panic!("no response for {call_num}"),
        }
    }
 }
-
-/// Create a mock responses API server that returns the same assistant message for every request.
-pub async fn create_mock_responses_server_repeating_assistant(message: &str) -> MockServer {
-    let server = responses::start_mock_server().await;
-    let body = responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_assistant_message("msg-1", message),
-        responses::ev_completed("resp-1"),
-    ]);
-    Mock::given(method("POST"))
-        .and(path_regex(".*/responses$"))
-        .respond_with(responses::sse_response(body))
-        .mount(&server)
-        .await;
-    server
-}
--- a/codex-rs/app-server/tests/common/models_cache.rs
+++ b/codex-rs/app-server/tests/common/models_cache.rs
@@ -25,7 +25,7 @@ fn preset_to_info(preset: &ModelPreset, priority: i32) -> ModelInfo {
        },
        supported_in_api: true,
        priority,
-        upgrade: preset.upgrade.as_ref().map(|u| u.into()),
+        upgrade: preset.upgrade.as_ref().map(|u| u.id.clone()),
        base_instructions: "base instructions".to_string(),
        supports_reasoning_summaries: false,
        support_verbosity: false,
--- a/codex-rs/app-server/tests/common/responses.rs
+++ b/codex-rs/app-server/tests/common/responses.rs
@@ -1,4 +1,3 @@
-use core_test_support::responses;
 use serde_json::json;
 use std::path::Path;

@@ -15,30 +14,85 @@ pub fn create_shell_command_sse_response(
        "workdir": workdir.map(|w| w.to_string_lossy()),
        "timeout_ms": timeout_ms
    }))?;
-    Ok(responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_function_call(call_id, "shell_command", &tool_call_arguments),
-        responses::ev_completed("resp-1"),
-    ]))
+    let tool_call = json!({
+        "choices": [
+            {
+                "delta": {
+                    "tool_calls": [
+                        {
+                            "id": call_id,
+                            "function": {
+                                "name": "shell_command",
+                                "arguments": tool_call_arguments
+                            }
+                        }
+                    ]
+                },
+                "finish_reason": "tool_calls"
+            }
+        ]
+    });
+
+    let sse = format!(
+        "data: {}\n\ndata: DONE\n\n",
+        serde_json::to_string(&tool_call)?
+    );
+    Ok(sse)
 }

 pub fn create_final_assistant_message_sse_response(message: &str) -> anyhow::Result<String> {
-    Ok(responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_assistant_message("msg-1", message),
-        responses::ev_completed("resp-1"),
-    ]))
+    let assistant_message = json!({
+        "choices": [
+            {
+                "delta": {
+                    "content": message
+                },
+                "finish_reason": "stop"
+            }
+        ]
+    });
+
+    let sse = format!(
+        "data: {}\n\ndata: DONE\n\n",
+        serde_json::to_string(&assistant_message)?
+    );
+    Ok(sse)
 }

 pub fn create_apply_patch_sse_response(
    patch_content: &str,
    call_id: &str,
 ) -> anyhow::Result<String> {
-    Ok(responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_apply_patch_shell_command_call_via_heredoc(call_id, patch_content),
-        responses::ev_completed("resp-1"),
-    ]))
+    // Use shell_command to call apply_patch with heredoc format
+    let command = format!("apply_patch <<'EOF'\n{patch_content}\nEOF");
+    let tool_call_arguments = serde_json::to_string(&json!({
+        "command": command
+    }))?;
+
+    let tool_call = json!({
+        "choices": [
+            {
+                "delta": {
+                    "tool_calls": [
+                        {
+                            "id": call_id,
+                            "function": {
+                                "name": "shell_command",
+                                "arguments": tool_call_arguments
+                            }
+                        }
+                    ]
+                },
+                "finish_reason": "tool_calls"
+            }
+        ]
+    });
+
+    let sse = format!(
+        "data: {}\n\ndata: DONE\n\n",
+        serde_json::to_string(&tool_call)?
+    );
+    Ok(sse)
 }

 pub fn create_exec_command_sse_response(call_id: &str) -> anyhow::Result<String> {
@@ -54,32 +108,28 @@ pub fn create_exec_command_sse_response(call_id: &str) -> anyhow::Result<String>
        "cmd": command.join(" "),
        "yield_time_ms": 500
    }))?;
-    Ok(responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_function_call(call_id, "exec_command", &tool_call_arguments),
-        responses::ev_completed("resp-1"),
-    ]))
-}
+    let tool_call = json!({
+        "choices": [
+            {
+                "delta": {
+                    "tool_calls": [
+                        {
+                            "id": call_id,
+                            "function": {
+                                "name": "exec_command",
+                                "arguments": tool_call_arguments
+                            }
+                        }
+                    ]
+                },
+                "finish_reason": "tool_calls"
+            }
+        ]
+    });

-pub fn create_request_user_input_sse_response(call_id: &str) -> anyhow::Result<String> {
-    let tool_call_arguments = serde_json::to_string(&json!({
-        "questions": [{
-            "id": "confirm_path",
-            "header": "Confirm",
-            "question": "Proceed with the plan?",
-            "options": [{
-                "label": "Yes (Recommended)",
-                "description": "Continue the current plan."
-            }, {
-                "label": "No",
-                "description": "Stop and revisit the approach."
-            }]
-        }]
-    }))?;
-
-    Ok(responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_function_call(call_id, "request_user_input", &tool_call_arguments),
-        responses::ev_completed("resp-1"),
-    ]))
+    let sse = format!(
+        "data: {}\n\ndata: DONE\n\n",
+        serde_json::to_string(&tool_call)?
+    );
+    Ok(sse)
 }
--- a/codex-rs/app-server/tests/common/rollout.rs
+++ b/codex-rs/app-server/tests/common/rollout.rs
@@ -6,23 +6,10 @@ use codex_protocol::protocol::SessionMetaLine;
 use codex_protocol::protocol::SessionSource;
 use serde_json::json;
 use std::fs;
-use std::fs::FileTimes;
 use std::path::Path;
 use std::path::PathBuf;
 use uuid::Uuid;

-pub fn rollout_path(codex_home: &Path, filename_ts: &str, thread_id: &str) -> PathBuf {
-    let year = &filename_ts[0..4];
-    let month = &filename_ts[5..7];
-    let day = &filename_ts[8..10];
-    codex_home
-        .join("sessions")
-        .join(year)
-        .join(month)
-        .join(day)
-        .join(format!("rollout-{filename_ts}-{thread_id}.jsonl"))
-}
-
 /// Create a minimal rollout file under `CODEX_HOME/sessions/YYYY/MM/DD/`.
 ///
 /// - `filename_ts` is the filename timestamp component in `YYYY-MM-DDThh-mm-ss` format.
@@ -43,23 +30,25 @@ pub fn create_fake_rollout(
    let uuid_str = uuid.to_string();
    let conversation_id = ThreadId::from_string(&uuid_str)?;

-    let file_path = rollout_path(codex_home, filename_ts, &uuid_str);
-    let dir = file_path
-        .parent()
-        .ok_or_else(|| anyhow::anyhow!("missing rollout parent directory"))?;
-    fs::create_dir_all(dir)?;
+    // sessions/YYYY/MM/DD derived from filename_ts (YYYY-MM-DDThh-mm-ss)
+    let year = &filename_ts[0..4];
+    let month = &filename_ts[5..7];
+    let day = &filename_ts[8..10];
+    let dir = codex_home.join("sessions").join(year).join(month).join(day);
+    fs::create_dir_all(&dir)?;
+
+    let file_path = dir.join(format!("rollout-{filename_ts}-{uuid}.jsonl"));

    // Build JSONL lines
    let meta = SessionMeta {
        id: conversation_id,
-        forked_from_id: None,
        timestamp: meta_rfc3339.to_string(),
        cwd: PathBuf::from("/"),
        originator: "codex".to_string(),
        cli_version: "0.0.0".to_string(),
+        instructions: None,
        source: SessionSource::Cli,
        model_provider: model_provider.map(str::to_string),
-        base_instructions: None,
    };
    let payload = serde_json::to_value(SessionMetaLine {
        meta,
@@ -95,85 +84,6 @@ pub fn create_fake_rollout(
        .to_string(),
    ];

-    fs::write(&file_path, lines.join("\n") + "\n")?;
-    let parsed = chrono::DateTime::parse_from_rfc3339(meta_rfc3339)?.with_timezone(&chrono::Utc);
-    let times = FileTimes::new().set_modified(parsed.into());
-    std::fs::OpenOptions::new()
-        .append(true)
-        .open(&file_path)?
-        .set_times(times)?;
-    Ok(uuid_str)
-}
-
-pub fn create_fake_rollout_with_text_elements(
-    codex_home: &Path,
-    filename_ts: &str,
-    meta_rfc3339: &str,
-    preview: &str,
-    text_elements: Vec<serde_json::Value>,
-    model_provider: Option<&str>,
-    git_info: Option<GitInfo>,
-) -> Result<String> {
-    let uuid = Uuid::new_v4();
-    let uuid_str = uuid.to_string();
-    let conversation_id = ThreadId::from_string(&uuid_str)?;
-
-    // sessions/YYYY/MM/DD derived from filename_ts (YYYY-MM-DDThh-mm-ss)
-    let year = &filename_ts[0..4];
-    let month = &filename_ts[5..7];
-    let day = &filename_ts[8..10];
-    let dir = codex_home.join("sessions").join(year).join(month).join(day);
-    fs::create_dir_all(&dir)?;
-
-    let file_path = dir.join(format!("rollout-{filename_ts}-{uuid}.jsonl"));
-
-    // Build JSONL lines
-    let meta = SessionMeta {
-        id: conversation_id,
-        forked_from_id: None,
-        timestamp: meta_rfc3339.to_string(),
-        cwd: PathBuf::from("/"),
-        originator: "codex".to_string(),
-        cli_version: "0.0.0".to_string(),
-        source: SessionSource::Cli,
-        model_provider: model_provider.map(str::to_string),
-        base_instructions: None,
-    };
-    let payload = serde_json::to_value(SessionMetaLine {
-        meta,
-        git: git_info,
-    })?;
-
-    let lines = [
-        json!( {
-            "timestamp": meta_rfc3339,
-            "type": "session_meta",
-            "payload": payload
-        })
-        .to_string(),
-        json!( {
-            "timestamp": meta_rfc3339,
-            "type":"response_item",
-            "payload": {
-                "type":"message",
-                "role":"user",
-                "content":[{"type":"input_text","text": preview}]
-            }
-        })
-        .to_string(),
-        json!( {
-            "timestamp": meta_rfc3339,
-            "type":"event_msg",
-            "payload": {
-                "type":"user_message",
-                "message": preview,
-                "text_elements": text_elements,
-                "local_images": []
-            }
-        })
-        .to_string(),
-    ];
-
    fs::write(file_path, lines.join("\n") + "\n")?;
    Ok(uuid_str)
 }
--- a/codex-rs/app-server/tests/suite/auth.rs
+++ b/codex-rs/app-server/tests/suite/auth.rs
@@ -37,7 +37,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "http://127.0.0.1:0/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 {requires_line}
--- a/codex-rs/app-server/tests/suite/codex_message_processor_flow.rs
+++ b/codex-rs/app-server/tests/suite/codex_message_processor_flow.rs
@@ -1,7 +1,7 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
 use app_test_support::create_final_assistant_message_sse_response;
-use app_test_support::create_mock_responses_server_sequence;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::create_shell_command_sse_response;
 use app_test_support::format_with_current_shell;
 use app_test_support::to_response;
@@ -65,7 +65,7 @@ async fn test_codex_jsonrpc_conversation_flow() -> Result<()> {
        )?,
        create_final_assistant_message_sse_response("Enjoy your new git repo!")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri())?;

    // Start MCP server and initialize.
@@ -114,7 +114,6 @@ async fn test_codex_jsonrpc_conversation_flow() -> Result<()> {
            conversation_id,
            items: vec![codex_app_server_protocol::InputItem::Text {
                text: "text".to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;
@@ -198,7 +197,7 @@ async fn test_send_user_turn_changes_approval_policy_behavior() -> Result<()> {
        )?,
        create_final_assistant_message_sse_response("done 2")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri())?;

    // Start MCP server and initialize.
@@ -242,7 +241,6 @@ async fn test_send_user_turn_changes_approval_policy_behavior() -> Result<()> {
            conversation_id,
            items: vec![codex_app_server_protocol::InputItem::Text {
                text: "run python".to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;
@@ -285,7 +283,7 @@ async fn test_send_user_turn_changes_approval_policy_behavior() -> Result<()> {
    )
    .await?;

-    // Wait for first TurnComplete
+    // Wait for first TaskComplete
    let _ = timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_notification_message("codex/event/task_complete"),
@@ -298,7 +296,6 @@ async fn test_send_user_turn_changes_approval_policy_behavior() -> Result<()> {
            conversation_id,
            items: vec![codex_app_server_protocol::InputItem::Text {
                text: "run python again".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: working_directory.clone(),
            approval_policy: AskForApproval::Never,
@@ -366,7 +363,7 @@ async fn test_send_user_turn_updates_sandbox_and_cwd_between_turns() -> Result<(
        )?,
        create_final_assistant_message_sse_response("done second")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri())?;

    let mut mcp = McpProcess::new(&codex_home).await?;
@@ -408,7 +405,6 @@ async fn test_send_user_turn_updates_sandbox_and_cwd_between_turns() -> Result<(
            conversation_id,
            items: vec![InputItem::Text {
                text: "first turn".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: first_cwd.clone(),
            approval_policy: AskForApproval::Never,
@@ -434,14 +430,12 @@ async fn test_send_user_turn_updates_sandbox_and_cwd_between_turns() -> Result<(
        mcp.read_stream_until_notification_message("codex/event/task_complete"),
    )
    .await??;
-    mcp.clear_message_buffer();

    let second_turn_id = mcp
        .send_send_user_turn_request(SendUserTurnParams {
            conversation_id,
            items: vec![InputItem::Text {
                text: "second turn".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: second_cwd.clone(),
            approval_policy: AskForApproval::Never,
@@ -505,7 +499,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/create_thread.rs
+++ b/codex-rs/app-server/tests/suite/create_thread.rs
@@ -1,6 +1,7 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
 use app_test_support::create_final_assistant_message_sse_response;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::to_response;
 use codex_app_server_protocol::AddConversationListenerParams;
 use codex_app_server_protocol::AddConversationSubscriptionResponse;
@@ -11,7 +12,6 @@ use codex_app_server_protocol::NewConversationResponse;
 use codex_app_server_protocol::RequestId;
 use codex_app_server_protocol::SendUserMessageParams;
 use codex_app_server_protocol::SendUserMessageResponse;
-use core_test_support::responses;
 use pretty_assertions::assert_eq;
 use serde_json::json;
 use std::path::Path;
@@ -23,9 +23,8 @@ const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
 async fn test_conversation_create_and_send_message_ok() -> Result<()> {
    // Mock server – we won't strictly rely on it, but provide one to satisfy any model wiring.
-    let response_body = create_final_assistant_message_sse_response("Done")?;
-    let server = responses::start_mock_server().await;
-    let response_mock = responses::mount_sse_sequence(&server, vec![response_body]).await;
+    let responses = vec![create_final_assistant_message_sse_response("Done")?];
+    let server = create_mock_chat_completions_server(responses).await;

    // Temporary Codex home with config pointing at the mock server.
    let codex_home = TempDir::new()?;
@@ -77,7 +76,6 @@ async fn test_conversation_create_and_send_message_ok() -> Result<()> {
            conversation_id,
            items: vec![InputItem::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;
@@ -88,30 +86,32 @@ async fn test_conversation_create_and_send_message_ok() -> Result<()> {
    .await??;
    let _ok: SendUserMessageResponse = to_response::<SendUserMessageResponse>(send_resp)?;

-    // Avoid race condition by waiting for the mock server to receive the responses request.
+    // avoid race condition by waiting for the mock server to receive the chat.completions request
    let deadline = std::time::Instant::now() + DEFAULT_READ_TIMEOUT;
    let requests = loop {
-        let requests = response_mock.requests();
+        let requests = server.received_requests().await.unwrap_or_default();
        if !requests.is_empty() {
            break requests;
        }
        if std::time::Instant::now() >= deadline {
-            panic!("mock server did not receive the responses request in time");
+            panic!("mock server did not receive the chat.completions request in time");
        }
        tokio::time::sleep(std::time::Duration::from_millis(10)).await;
    };

-    // Verify the outbound request body matches expectations for Responses.
+    // Verify the outbound request body matches expectations for Chat Completions.
    let request = requests
        .first()
        .expect("mock server should have received at least one request");
-    let body = request.body_json();
+    let body = request.body_json::<serde_json::Value>()?;
    assert_eq!(body["model"], json!("o3"));
-    let user_texts = request.message_input_texts("user");
-    assert!(
-        user_texts.iter().any(|text| text == "Hello"),
-        "expected user input to include Hello, got {user_texts:?}"
-    );
+    assert!(body["stream"].as_bool().unwrap_or(false));
+    let messages = body["messages"]
+        .as_array()
+        .expect("messages should be array");
+    let last = messages.last().expect("at least one message");
+    assert_eq!(last["role"], json!("user"));
+    assert_eq!(last["content"], json!("Hello"));

    drop(server);
    Ok(())
@@ -133,7 +133,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/fork_thread.rs
+++ b/codex-rs/app-server/tests/suite/fork_thread.rs
@@ -1,140 +0,0 @@
-use anyhow::Result;
-use app_test_support::McpProcess;
-use app_test_support::create_fake_rollout;
-use app_test_support::to_response;
-use codex_app_server_protocol::ForkConversationParams;
-use codex_app_server_protocol::ForkConversationResponse;
-use codex_app_server_protocol::JSONRPCNotification;
-use codex_app_server_protocol::JSONRPCResponse;
-use codex_app_server_protocol::NewConversationParams; // reused for overrides shape
-use codex_app_server_protocol::RequestId;
-use codex_app_server_protocol::ServerNotification;
-use codex_app_server_protocol::SessionConfiguredNotification;
-use codex_core::protocol::EventMsg;
-use pretty_assertions::assert_eq;
-use tempfile::TempDir;
-use tokio::time::timeout;
-
-const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
-
-#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
-async fn fork_conversation_creates_new_rollout() -> Result<()> {
-    let codex_home = TempDir::new()?;
-
-    let preview = "Hello A";
-    let conversation_id = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-02T12-00-00",
-        "2025-01-02T12:00:00Z",
-        preview,
-        Some("openai"),
-        None,
-    )?;
-
-    let original_path = codex_home
-        .path()
-        .join("sessions")
-        .join("2025")
-        .join("01")
-        .join("02")
-        .join(format!(
-            "rollout-2025-01-02T12-00-00-{conversation_id}.jsonl"
-        ));
-    assert!(
-        original_path.exists(),
-        "expected original rollout to exist at {}",
-        original_path.display()
-    );
-    let original_contents = std::fs::read_to_string(&original_path)?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let fork_req_id = mcp
-        .send_fork_conversation_request(ForkConversationParams {
-            path: Some(original_path.clone()),
-            conversation_id: None,
-            overrides: Some(NewConversationParams {
-                model: Some("o3".to_string()),
-                ..Default::default()
-            }),
-        })
-        .await?;
-
-    // Expect a sessionConfigured notification for the forked session.
-    let notification: JSONRPCNotification = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("sessionConfigured"),
-    )
-    .await??;
-    let session_configured: ServerNotification = notification.try_into()?;
-    let ServerNotification::SessionConfigured(SessionConfiguredNotification {
-        model,
-        session_id,
-        rollout_path,
-        initial_messages: session_initial_messages,
-        ..
-    }) = session_configured
-    else {
-        unreachable!("expected sessionConfigured notification");
-    };
-
-    assert_eq!(model, "o3");
-    assert_ne!(
-        session_id.to_string(),
-        conversation_id,
-        "expected a new conversation id when forking"
-    );
-    assert_ne!(
-        rollout_path, original_path,
-        "expected a new rollout path when forking"
-    );
-    assert!(
-        rollout_path.exists(),
-        "expected forked rollout to exist at {}",
-        rollout_path.display()
-    );
-
-    let session_initial_messages =
-        session_initial_messages.expect("expected initial messages when forking from rollout");
-    match session_initial_messages.as_slice() {
-        [EventMsg::UserMessage(message)] => {
-            assert_eq!(message.message, preview);
-        }
-        other => panic!("unexpected initial messages from rollout fork: {other:#?}"),
-    }
-
-    // Then the response for forkConversation.
-    let fork_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(fork_req_id)),
-    )
-    .await??;
-    let ForkConversationResponse {
-        conversation_id: forked_id,
-        model: forked_model,
-        initial_messages: response_initial_messages,
-        rollout_path: response_rollout_path,
-    } = to_response::<ForkConversationResponse>(fork_resp)?;
-
-    assert_eq!(forked_model, "o3");
-    assert_eq!(response_rollout_path, rollout_path);
-    assert_ne!(forked_id.to_string(), conversation_id);
-
-    let response_initial_messages =
-        response_initial_messages.expect("expected initial messages in fork response");
-    match response_initial_messages.as_slice() {
-        [EventMsg::UserMessage(message)] => {
-            assert_eq!(message.message, preview);
-        }
-        other => panic!("unexpected initial messages in fork response: {other:#?}"),
-    }
-
-    let after_contents = std::fs::read_to_string(&original_path)?;
-    assert_eq!(
-        after_contents, original_contents,
-        "fork should not mutate the original rollout file"
-    );
-
-    Ok(())
-}
--- a/codex-rs/app-server/tests/suite/interrupt.rs
+++ b/codex-rs/app-server/tests/suite/interrupt.rs
@@ -18,7 +18,7 @@ use tempfile::TempDir;
 use tokio::time::timeout;

 use app_test_support::McpProcess;
-use app_test_support::create_mock_responses_server_sequence;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::create_shell_command_sse_response;
 use app_test_support::to_response;

@@ -56,7 +56,7 @@ async fn shell_command_interruption() -> anyhow::Result<()> {
    std::fs::create_dir(&working_directory)?;

    // Create mock server with a single SSE response: the long sleep command
-    let server = create_mock_responses_server_sequence(vec![create_shell_command_sse_response(
+    let server = create_mock_chat_completions_server(vec![create_shell_command_sse_response(
        shell_command.clone(),
        Some(&working_directory),
        Some(10_000), // 10 seconds timeout in ms
@@ -105,7 +105,6 @@ async fn shell_command_interruption() -> anyhow::Result<()> {
            conversation_id,
            items: vec![codex_app_server_protocol::InputItem::Text {
                text: "run first sleep command".to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;
@@ -154,7 +153,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/login.rs
+++ b/codex-rs/app-server/tests/suite/login.rs
@@ -32,7 +32,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "http://127.0.0.1:0/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#,
--- a/codex-rs/app-server/tests/suite/mod.rs
+++ b/codex-rs/app-server/tests/suite/mod.rs
@@ -3,7 +3,6 @@ mod auth;
 mod codex_message_processor_flow;
 mod config;
 mod create_thread;
-mod fork_thread;
 mod fuzzy_file_search;
 mod interrupt;
 mod list_resume;
--- a/codex-rs/app-server/tests/suite/output_schema.rs
+++ b/codex-rs/app-server/tests/suite/output_schema.rs
@@ -80,7 +80,6 @@ async fn send_user_turn_accepts_output_schema_v1() -> Result<()> {
            conversation_id,
            items: vec![InputItem::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: codex_home.path().to_path_buf(),
            approval_policy: AskForApproval::Never,
@@ -182,7 +181,6 @@ async fn send_user_turn_output_schema_is_per_turn_v1() -> Result<()> {
            conversation_id,
            items: vec![InputItem::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: codex_home.path().to_path_buf(),
            approval_policy: AskForApproval::Never,
@@ -230,7 +228,6 @@ async fn send_user_turn_output_schema_is_per_turn_v1() -> Result<()> {
            conversation_id,
            items: vec![InputItem::Text {
                text: "Hello again".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: codex_home.path().to_path_buf(),
            approval_policy: AskForApproval::Never,
--- a/codex-rs/app-server/tests/suite/send_message.rs
+++ b/codex-rs/app-server/tests/suite/send_message.rs
@@ -1,5 +1,7 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
+use app_test_support::create_final_assistant_message_sse_response;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::to_response;
 use codex_app_server_protocol::AddConversationListenerParams;
 use codex_app_server_protocol::AddConversationSubscriptionResponse;
@@ -13,15 +15,10 @@ use codex_app_server_protocol::SendUserMessageParams;
 use codex_app_server_protocol::SendUserMessageResponse;
 use codex_protocol::ThreadId;
 use codex_protocol::models::ContentItem;
-use codex_protocol::models::DeveloperInstructions;
 use codex_protocol::models::ResponseItem;
-use codex_protocol::protocol::AskForApproval;
 use codex_protocol::protocol::RawResponseItemEvent;
-use codex_protocol::protocol::SandboxPolicy;
-use core_test_support::responses;
 use pretty_assertions::assert_eq;
 use std::path::Path;
-use std::path::PathBuf;
 use tempfile::TempDir;
 use tokio::time::timeout;

@@ -29,21 +26,13 @@ const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs

 #[tokio::test]
 async fn test_send_message_success() -> Result<()> {
-    // Spin up a mock responses server that immediately ends the Codex turn.
+    // Spin up a mock completions server that immediately ends the Codex turn.
    // Two Codex turns hit the mock model (session start + send-user-message). Provide two SSE responses.
-    let server = responses::start_mock_server().await;
-    let body1 = responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_assistant_message("msg-1", "Done"),
-        responses::ev_completed("resp-1"),
-    ]);
-    let body2 = responses::sse(vec![
-        responses::ev_response_created("resp-2"),
-        responses::ev_assistant_message("msg-2", "Done"),
-        responses::ev_completed("resp-2"),
-    ]);
-    let _response_mock1 = responses::mount_sse_once(&server, body1).await;
-    let _response_mock2 = responses::mount_sse_once(&server, body2).await;
+    let responses = vec![
+        create_final_assistant_message_sse_response("Done")?,
+        create_final_assistant_message_sse_response("Done")?,
+    ];
+    let server = create_mock_chat_completions_server(responses).await;

    // Create a temporary Codex home with config pointing at the mock server.
    let codex_home = TempDir::new()?;
@@ -101,7 +90,6 @@ async fn send_message(
            conversation_id,
            items: vec![InputItem::Text {
                text: message.to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;
@@ -147,13 +135,8 @@ async fn send_message(

 #[tokio::test]
 async fn test_send_message_raw_notifications_opt_in() -> Result<()> {
-    let server = responses::start_mock_server().await;
-    let body = responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_assistant_message("msg-1", "Done"),
-        responses::ev_completed("resp-1"),
-    ]);
-    let _response_mock = responses::mount_sse_once(&server, body).await;
+    let responses = vec![create_final_assistant_message_sse_response("Done")?];
+    let server = create_mock_chat_completions_server(responses).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;
@@ -195,14 +178,10 @@ async fn test_send_message_raw_notifications_opt_in() -> Result<()> {
            conversation_id,
            items: vec![InputItem::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;

-    let permissions = read_raw_response_item(&mut mcp, conversation_id).await;
-    assert_permissions_message(&permissions);
-
    let developer = read_raw_response_item(&mut mcp, conversation_id).await;
    assert_developer_message(&developer, "Use the test harness tools.");

@@ -247,7 +226,6 @@ async fn test_send_message_session_not_found() -> Result<()> {
            conversation_id: unknown,
            items: vec![InputItem::Text {
                text: "ping".to_string(),
-                text_elements: Vec::new(),
            }],
        })
        .await?;
@@ -281,7 +259,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
@@ -291,7 +269,6 @@ stream_max_retries = 0

 #[expect(clippy::expect_used)]
 async fn read_raw_response_item(mcp: &mut McpProcess, conversation_id: ThreadId) -> ResponseItem {
-    // TODO: Switch to rawResponseItem/completed once we migrate to app server v2 in codex web.
    loop {
        let raw_notification: JSONRPCNotification = timeout(
            DEFAULT_READ_TIMEOUT,
@@ -350,27 +327,6 @@ fn assert_instructions_message(item: &ResponseItem) {
    }
 }

-fn assert_permissions_message(item: &ResponseItem) {
-    match item {
-        ResponseItem::Message { role, content, .. } => {
-            assert_eq!(role, "developer");
-            let texts = content_texts(content);
-            let expected = DeveloperInstructions::from_policy(
-                &SandboxPolicy::DangerFullAccess,
-                AskForApproval::Never,
-                &PathBuf::from("/tmp"),
-            )
-            .into_text();
-            assert_eq!(
-                texts,
-                vec![expected.as_str()],
-                "expected permissions developer message, got {texts:?}"
-            );
-        }
-        other => panic!("expected permissions message, got {other:?}"),
-    }
-}
-
 fn assert_developer_message(item: &ResponseItem, expected_text: &str) {
    match item {
        ResponseItem::Message { role, content, .. } => {
@@ -428,7 +384,7 @@ fn content_texts(content: &[ContentItem]) -> Vec<&str> {
    content
        .iter()
        .filter_map(|item| match item {
-            ContentItem::InputText { text, .. } | ContentItem::OutputText { text } => {
+            ContentItem::InputText { text } | ContentItem::OutputText { text } => {
                Some(text.as_str())
            }
            _ => None,
--- a/codex-rs/app-server/tests/suite/user_agent.rs
+++ b/codex-rs/app-server/tests/suite/user_agent.rs
@@ -1,5 +1,4 @@
 use anyhow::Result;
-use app_test_support::DEFAULT_CLIENT_NAME;
 use app_test_support::McpProcess;
 use app_test_support::to_response;
 use codex_app_server_protocol::GetUserAgentResponse;
@@ -26,13 +25,13 @@ async fn get_user_agent_returns_current_codex_user_agent() -> Result<()> {
    .await??;

    let os_info = os_info::get();
-    let originator = DEFAULT_CLIENT_NAME;
+    let originator = codex_core::default_client::originator().value.as_str();
    let os_type = os_info.os_type();
    let os_version = os_info.version();
    let architecture = os_info.architecture().unwrap_or("unknown");
    let terminal_ua = codex_core::terminal::user_agent();
    let user_agent = format!(
-        "{originator}/0.0.0 ({os_type} {os_version}; {architecture}) {terminal_ua} ({DEFAULT_CLIENT_NAME}; 0.1.0)"
+        "{originator}/0.0.0 ({os_type} {os_version}; {architecture}) {terminal_ua} (codex-app-server-tests; 0.1.0)"
    );

    let received: GetUserAgentResponse = to_response(response)?;
--- a/codex-rs/app-server/tests/suite/v2/account.rs
+++ b/codex-rs/app-server/tests/suite/v2/account.rs
@@ -67,7 +67,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "http://127.0.0.1:0/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 {requires_line}
--- a/codex-rs/app-server/tests/suite/v2/analytics.rs
+++ b/codex-rs/app-server/tests/suite/v2/analytics.rs
@@ -1,66 +0,0 @@
-use anyhow::Result;
-use codex_core::config::ConfigBuilder;
-use codex_core::config::types::OtelExporterKind;
-use codex_core::config::types::OtelHttpProtocol;
-use pretty_assertions::assert_eq;
-use std::collections::HashMap;
-use tempfile::TempDir;
-
-const SERVICE_VERSION: &str = "0.0.0-test";
-
-fn set_metrics_exporter(config: &mut codex_core::config::Config) {
-    config.otel.metrics_exporter = OtelExporterKind::OtlpHttp {
-        endpoint: "http://localhost:4318".to_string(),
-        headers: HashMap::new(),
-        protocol: OtelHttpProtocol::Json,
-        tls: None,
-    };
-}
-
-#[tokio::test]
-async fn app_server_default_analytics_disabled_without_flag() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    let mut config = ConfigBuilder::default()
-        .codex_home(codex_home.path().to_path_buf())
-        .build()
-        .await?;
-    set_metrics_exporter(&mut config);
-    config.analytics_enabled = None;
-
-    let provider = codex_core::otel_init::build_provider(
-        &config,
-        SERVICE_VERSION,
-        Some("codex_app_server"),
-        false,
-    )
-    .map_err(|err| anyhow::anyhow!(err.to_string()))?;
-
-    // With analytics unset in the config and the default flag is false, metrics are disabled.
-    // No provider is built.
-    assert_eq!(provider.is_none(), true);
-    Ok(())
-}
-
-#[tokio::test]
-async fn app_server_default_analytics_enabled_with_flag() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    let mut config = ConfigBuilder::default()
-        .codex_home(codex_home.path().to_path_buf())
-        .build()
-        .await?;
-    set_metrics_exporter(&mut config);
-    config.analytics_enabled = None;
-
-    let provider = codex_core::otel_init::build_provider(
-        &config,
-        SERVICE_VERSION,
-        Some("codex_app_server"),
-        true,
-    )
-    .map_err(|err| anyhow::anyhow!(err.to_string()))?;
-
-    // With analytics unset in the config and the default flag is true, metrics are enabled.
-    let has_metrics = provider.as_ref().and_then(|otel| otel.metrics()).is_some();
-    assert_eq!(has_metrics, true);
-    Ok(())
-}
--- a/codex-rs/app-server/tests/suite/v2/collaboration_mode_list.rs
+++ b/codex-rs/app-server/tests/suite/v2/collaboration_mode_list.rs
@@ -1,86 +0,0 @@
-//! Validates that the collaboration mode list endpoint returns the expected default presets.
-//!
-//! The test drives the app server through the MCP harness and asserts that the list response
-//! includes the plan, pair programming, and execute modes with their default model and reasoning
-//! effort settings, which keeps the API contract visible in one place.
-
-#![allow(clippy::unwrap_used)]
-
-use std::time::Duration;
-
-use anyhow::Result;
-use app_test_support::McpProcess;
-use app_test_support::to_response;
-use codex_app_server_protocol::CollaborationModeListParams;
-use codex_app_server_protocol::CollaborationModeListResponse;
-use codex_app_server_protocol::JSONRPCResponse;
-use codex_app_server_protocol::RequestId;
-use codex_core::models_manager::test_builtin_collaboration_mode_presets;
-use codex_protocol::config_types::CollaborationMode;
-use pretty_assertions::assert_eq;
-use tempfile::TempDir;
-use tokio::time::timeout;
-
-const DEFAULT_TIMEOUT: Duration = Duration::from_secs(10);
-
-/// Confirms the server returns the default collaboration mode presets in a stable order.
-#[tokio::test]
-async fn list_collaboration_modes_returns_presets() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-
-    timeout(DEFAULT_TIMEOUT, mcp.initialize()).await??;
-
-    let request_id = mcp
-        .send_list_collaboration_modes_request(CollaborationModeListParams {})
-        .await?;
-
-    let response: JSONRPCResponse = timeout(
-        DEFAULT_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(request_id)),
-    )
-    .await??;
-
-    let CollaborationModeListResponse { data: items } =
-        to_response::<CollaborationModeListResponse>(response)?;
-
-    let expected = vec![plan_preset(), pair_programming_preset(), execute_preset()];
-    assert_eq!(expected, items);
-    Ok(())
-}
-
-/// Builds the plan preset that the list response is expected to return.
-///
-/// If the defaults change in the app server, this helper should be updated alongside the
-/// contract, or the test will fail in ways that imply a regression in the API.
-fn plan_preset() -> CollaborationMode {
-    let presets = test_builtin_collaboration_mode_presets();
-    presets
-        .into_iter()
-        .find(|p| matches!(p, CollaborationMode::Plan(_)))
-        .unwrap()
-}
-
-/// Builds the pair programming preset that the list response is expected to return.
-///
-/// The helper keeps the expected model and reasoning defaults co-located with the test
-/// so that mismatches point directly at the API contract being exercised.
-fn pair_programming_preset() -> CollaborationMode {
-    let presets = test_builtin_collaboration_mode_presets();
-    presets
-        .into_iter()
-        .find(|p| matches!(p, CollaborationMode::PairProgramming(_)))
-        .unwrap()
-}
-
-/// Builds the execute preset that the list response is expected to return.
-///
-/// The execute preset uses a different reasoning effort to capture the higher-effort
-/// execution contract the server currently exposes.
-fn execute_preset() -> CollaborationMode {
-    let presets = test_builtin_collaboration_mode_presets();
-    presets
-        .into_iter()
-        .find(|p| matches!(p, CollaborationMode::Execute(_)))
-        .unwrap()
-}
--- a/codex-rs/app-server/tests/suite/v2/initialize.rs
+++ b/codex-rs/app-server/tests/suite/v2/initialize.rs
@@ -1,137 +0,0 @@
-use anyhow::Result;
-use app_test_support::McpProcess;
-use app_test_support::create_mock_responses_server_sequence_unchecked;
-use app_test_support::to_response;
-use codex_app_server_protocol::ClientInfo;
-use codex_app_server_protocol::InitializeResponse;
-use codex_app_server_protocol::JSONRPCMessage;
-use pretty_assertions::assert_eq;
-use std::path::Path;
-use tempfile::TempDir;
-use tokio::time::timeout;
-
-const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
-
-#[tokio::test]
-async fn initialize_uses_client_info_name_as_originator() -> Result<()> {
-    let responses = Vec::new();
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri(), "never")?;
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-
-    let message = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.initialize_with_client_info(ClientInfo {
-            name: "codex_vscode".to_string(),
-            title: Some("Codex VS Code Extension".to_string()),
-            version: "0.1.0".to_string(),
-        }),
-    )
-    .await??;
-
-    let JSONRPCMessage::Response(response) = message else {
-        anyhow::bail!("expected initialize response, got {message:?}");
-    };
-    let InitializeResponse { user_agent } = to_response::<InitializeResponse>(response)?;
-
-    assert!(user_agent.starts_with("codex_vscode/"));
-    Ok(())
-}
-
-#[tokio::test]
-async fn initialize_respects_originator_override_env_var() -> Result<()> {
-    let responses = Vec::new();
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri(), "never")?;
-    let mut mcp = McpProcess::new_with_env(
-        codex_home.path(),
-        &[(
-            "CODEX_INTERNAL_ORIGINATOR_OVERRIDE",
-            Some("codex_originator_via_env_var"),
-        )],
-    )
-    .await?;
-
-    let message = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.initialize_with_client_info(ClientInfo {
-            name: "codex_vscode".to_string(),
-            title: Some("Codex VS Code Extension".to_string()),
-            version: "0.1.0".to_string(),
-        }),
-    )
-    .await??;
-
-    let JSONRPCMessage::Response(response) = message else {
-        anyhow::bail!("expected initialize response, got {message:?}");
-    };
-    let InitializeResponse { user_agent } = to_response::<InitializeResponse>(response)?;
-
-    assert!(user_agent.starts_with("codex_originator_via_env_var/"));
-    Ok(())
-}
-
-#[tokio::test]
-async fn initialize_rejects_invalid_client_name() -> Result<()> {
-    let responses = Vec::new();
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri(), "never")?;
-    let mut mcp = McpProcess::new_with_env(
-        codex_home.path(),
-        &[("CODEX_INTERNAL_ORIGINATOR_OVERRIDE", None)],
-    )
-    .await?;
-
-    let message = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.initialize_with_client_info(ClientInfo {
-            name: "bad\rname".to_string(),
-            title: Some("Bad Client".to_string()),
-            version: "0.1.0".to_string(),
-        }),
-    )
-    .await??;
-
-    let JSONRPCMessage::Error(error) = message else {
-        anyhow::bail!("expected initialize error, got {message:?}");
-    };
-
-    assert_eq!(error.error.code, -32600);
-    assert_eq!(
-        error.error.message,
-        "Invalid clientInfo.name: 'bad\rname'. Must be a valid HTTP header value."
-    );
-    assert_eq!(error.error.data, None);
-    Ok(())
-}
-
-// Helper to create a config.toml pointing at the mock model server.
-fn create_config_toml(
-    codex_home: &Path,
-    server_uri: &str,
-    approval_policy: &str,
-) -> std::io::Result<()> {
-    let config_toml = codex_home.join("config.toml");
-    std::fs::write(
-        config_toml,
-        format!(
-            r#"
-model = "mock-model"
-approval_policy = "{approval_policy}"
-sandbox_mode = "read-only"
-
-model_provider = "mock_provider"
-
-[model_providers.mock_provider]
-name = "Mock provider for test"
-base_url = "{server_uri}/v1"
-wire_api = "responses"
-request_max_retries = 0
-stream_max_retries = 0
-"#
-        ),
-    )
-}
--- a/codex-rs/app-server/tests/suite/v2/mod.rs
+++ b/codex-rs/app-server/tests/suite/v2/mod.rs
@@ -1,17 +1,11 @@
 mod account;
-mod analytics;
-mod collaboration_mode_list;
 mod config_rpc;
-mod initialize;
 mod model_list;
 mod output_schema;
 mod rate_limits;
-mod request_user_input;
 mod review;
 mod thread_archive;
-mod thread_fork;
 mod thread_list;
-mod thread_loaded_list;
 mod thread_resume;
 mod thread_rollback;
 mod thread_start;
--- a/codex-rs/app-server/tests/suite/v2/output_schema.rs
+++ b/codex-rs/app-server/tests/suite/v2/output_schema.rs
@@ -61,7 +61,6 @@ async fn turn_start_accepts_output_schema_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
            output_schema: Some(output_schema.clone()),
            ..Default::default()
@@ -143,7 +142,6 @@ async fn turn_start_output_schema_is_per_turn_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
            output_schema: Some(output_schema.clone()),
            ..Default::default()
@@ -185,7 +183,6 @@ async fn turn_start_output_schema_is_per_turn_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "Hello again".to_string(),
-                text_elements: Vec::new(),
            }],
            output_schema: None,
            ..Default::default()
--- a/codex-rs/app-server/tests/suite/v2/request_user_input.rs
+++ b/codex-rs/app-server/tests/suite/v2/request_user_input.rs
@@ -1,134 +0,0 @@
-use anyhow::Result;
-use app_test_support::McpProcess;
-use app_test_support::create_final_assistant_message_sse_response;
-use app_test_support::create_mock_responses_server_sequence;
-use app_test_support::create_request_user_input_sse_response;
-use app_test_support::to_response;
-use codex_app_server_protocol::JSONRPCResponse;
-use codex_app_server_protocol::RequestId;
-use codex_app_server_protocol::ServerRequest;
-use codex_app_server_protocol::ThreadStartParams;
-use codex_app_server_protocol::ThreadStartResponse;
-use codex_app_server_protocol::TurnStartParams;
-use codex_app_server_protocol::TurnStartResponse;
-use codex_app_server_protocol::UserInput as V2UserInput;
-use codex_protocol::config_types::CollaborationMode;
-use codex_protocol::config_types::Settings;
-use codex_protocol::openai_models::ReasoningEffort;
-use tokio::time::timeout;
-
-const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
-
-#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
-async fn request_user_input_round_trip() -> Result<()> {
-    let codex_home = tempfile::TempDir::new()?;
-    let responses = vec![
-        create_request_user_input_sse_response("call1")?,
-        create_final_assistant_message_sse_response("done")?,
-    ];
-    let server = create_mock_responses_server_sequence(responses).await;
-    create_config_toml(codex_home.path(), &server.uri())?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let thread_start_id = mcp
-        .send_thread_start_request(ThreadStartParams {
-            model: Some("mock-model".to_string()),
-            ..Default::default()
-        })
-        .await?;
-    let thread_start_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(thread_start_id)),
-    )
-    .await??;
-    let ThreadStartResponse { thread, .. } = to_response(thread_start_resp)?;
-
-    let turn_start_id = mcp
-        .send_turn_start_request(TurnStartParams {
-            thread_id: thread.id.clone(),
-            input: vec![V2UserInput::Text {
-                text: "ask something".to_string(),
-                text_elements: Vec::new(),
-            }],
-            model: Some("mock-model".to_string()),
-            effort: Some(ReasoningEffort::Medium),
-            collaboration_mode: Some(CollaborationMode::Plan(Settings {
-                model: "mock-model".to_string(),
-                reasoning_effort: Some(ReasoningEffort::Medium),
-                developer_instructions: None,
-            })),
-            ..Default::default()
-        })
-        .await?;
-    let turn_start_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(turn_start_id)),
-    )
-    .await??;
-    let TurnStartResponse { turn, .. } = to_response(turn_start_resp)?;
-
-    let server_req = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_request_message(),
-    )
-    .await??;
-    let ServerRequest::ToolRequestUserInput { request_id, params } = server_req else {
-        panic!("expected ToolRequestUserInput request, got: {server_req:?}");
-    };
-
-    assert_eq!(params.thread_id, thread.id);
-    assert_eq!(params.turn_id, turn.id);
-    assert_eq!(params.item_id, "call1");
-    assert_eq!(params.questions.len(), 1);
-
-    mcp.send_response(
-        request_id,
-        serde_json::json!({
-            "answers": {
-                "confirm_path": { "selected": ["yes"], "other": serde_json::Value::Null }
-            }
-        }),
-    )
-    .await?;
-
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("codex/event/task_complete"),
-    )
-    .await??;
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("turn/completed"),
-    )
-    .await??;
-
-    Ok(())
-}
-
-fn create_config_toml(codex_home: &std::path::Path, server_uri: &str) -> std::io::Result<()> {
-    let config_toml = codex_home.join("config.toml");
-    std::fs::write(
-        config_toml,
-        format!(
-            r#"
-model = "mock-model"
-approval_policy = "untrusted"
-sandbox_mode = "read-only"
-
-model_provider = "mock_provider"
-
-[features]
-collaboration_modes = true
-
-[model_providers.mock_provider]
-name = "Mock provider for test"
-base_url = "{server_uri}/v1"
-wire_api = "responses"
-request_max_retries = 0
-stream_max_retries = 0
-"#
-        ),
-    )
-}
--- a/codex-rs/app-server/tests/suite/v2/review.rs
+++ b/codex-rs/app-server/tests/suite/v2/review.rs
@@ -1,6 +1,7 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
-use app_test_support::create_mock_responses_server_repeating_assistant;
+use app_test_support::create_final_assistant_message_sse_response;
+use app_test_support::create_mock_chat_completions_server_unchecked;
 use app_test_support::to_response;
 use codex_app_server_protocol::ItemCompletedNotification;
 use codex_app_server_protocol::ItemStartedNotification;
@@ -43,7 +44,10 @@ async fn review_start_runs_review_turn_and_emits_code_review_item() -> Result<()
        "overall_confidence_score": 0.75
    })
    .to_string();
-    let server = create_mock_responses_server_repeating_assistant(&review_payload).await;
+    let responses = vec![create_final_assistant_message_sse_response(
+        &review_payload,
+    )?];
+    let server = create_mock_chat_completions_server_unchecked(responses).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;
@@ -131,7 +135,7 @@ async fn review_start_runs_review_turn_and_emits_code_review_item() -> Result<()

 #[tokio::test]
 async fn review_start_rejects_empty_base_branch() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server_unchecked(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

@@ -172,7 +176,10 @@ async fn review_start_with_detached_delivery_returns_new_thread_id() -> Result<(
        "overall_confidence_score": 0.5
    })
    .to_string();
-    let server = create_mock_responses_server_repeating_assistant(&review_payload).await;
+    let responses = vec![create_final_assistant_message_sse_response(
+        &review_payload,
+    )?];
+    let server = create_mock_chat_completions_server_unchecked(responses).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;
@@ -212,7 +219,7 @@ async fn review_start_with_detached_delivery_returns_new_thread_id() -> Result<(

 #[tokio::test]
 async fn review_start_rejects_empty_commit_sha() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server_unchecked(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

@@ -247,7 +254,7 @@ async fn review_start_rejects_empty_commit_sha() -> Result<()> {

 #[tokio::test]
 async fn review_start_rejects_empty_custom_instructions() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server_unchecked(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

@@ -313,7 +320,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/v2/thread_fork.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_fork.rs
@@ -1,141 +0,0 @@
-use anyhow::Result;
-use app_test_support::McpProcess;
-use app_test_support::create_fake_rollout;
-use app_test_support::create_mock_responses_server_repeating_assistant;
-use app_test_support::to_response;
-use codex_app_server_protocol::JSONRPCNotification;
-use codex_app_server_protocol::JSONRPCResponse;
-use codex_app_server_protocol::RequestId;
-use codex_app_server_protocol::SessionSource;
-use codex_app_server_protocol::ThreadForkParams;
-use codex_app_server_protocol::ThreadForkResponse;
-use codex_app_server_protocol::ThreadItem;
-use codex_app_server_protocol::ThreadStartedNotification;
-use codex_app_server_protocol::TurnStatus;
-use codex_app_server_protocol::UserInput;
-use pretty_assertions::assert_eq;
-use std::path::Path;
-use tempfile::TempDir;
-use tokio::time::timeout;
-
-const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
-
-#[tokio::test]
-async fn thread_fork_creates_new_thread_and_emits_started() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
-
-    let preview = "Saved user message";
-    let conversation_id = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-05T12-00-00",
-        "2025-01-05T12:00:00Z",
-        preview,
-        Some("mock_provider"),
-        None,
-    )?;
-
-    let original_path = codex_home
-        .path()
-        .join("sessions")
-        .join("2025")
-        .join("01")
-        .join("05")
-        .join(format!(
-            "rollout-2025-01-05T12-00-00-{conversation_id}.jsonl"
-        ));
-    assert!(
-        original_path.exists(),
-        "expected original rollout to exist at {}",
-        original_path.display()
-    );
-    let original_contents = std::fs::read_to_string(&original_path)?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let fork_id = mcp
-        .send_thread_fork_request(ThreadForkParams {
-            thread_id: conversation_id.clone(),
-            ..Default::default()
-        })
-        .await?;
-    let fork_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(fork_id)),
-    )
-    .await??;
-    let ThreadForkResponse { thread, .. } = to_response::<ThreadForkResponse>(fork_resp)?;
-
-    let after_contents = std::fs::read_to_string(&original_path)?;
-    assert_eq!(
-        after_contents, original_contents,
-        "fork should not mutate the original rollout file"
-    );
-
-    assert_ne!(thread.id, conversation_id);
-    assert_eq!(thread.preview, preview);
-    assert_eq!(thread.model_provider, "mock_provider");
-    assert!(thread.path.is_absolute());
-    assert_ne!(thread.path, original_path);
-    assert!(thread.cwd.is_absolute());
-    assert_eq!(thread.source, SessionSource::VsCode);
-
-    assert_eq!(
-        thread.turns.len(),
-        1,
-        "expected forked thread to include one turn"
-    );
-    let turn = &thread.turns[0];
-    assert_eq!(turn.status, TurnStatus::Completed);
-    assert_eq!(turn.items.len(), 1, "expected user message item");
-    match &turn.items[0] {
-        ThreadItem::UserMessage { content, .. } => {
-            assert_eq!(
-                content,
-                &vec![UserInput::Text {
-                    text: preview.to_string(),
-                    text_elements: Vec::new(),
-                }]
-            );
-        }
-        other => panic!("expected user message item, got {other:?}"),
-    }
-
-    // A corresponding thread/started notification should arrive.
-    let notif: JSONRPCNotification = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("thread/started"),
-    )
-    .await??;
-    let started: ThreadStartedNotification =
-        serde_json::from_value(notif.params.expect("params must be present"))?;
-    assert_eq!(started.thread, thread);
-
-    Ok(())
-}
-
-// Helper to create a config.toml pointing at the mock model server.
-fn create_config_toml(codex_home: &Path, server_uri: &str) -> std::io::Result<()> {
-    let config_toml = codex_home.join("config.toml");
-    std::fs::write(
-        config_toml,
-        format!(
-            r#"
-model = "mock-model"
-approval_policy = "never"
-sandbox_mode = "read-only"
-
-model_provider = "mock_provider"
-
-[model_providers.mock_provider]
-name = "Mock provider for test"
-base_url = "{server_uri}/v1"
-wire_api = "responses"
-request_max_retries = 0
-stream_max_retries = 0
-"#
-        ),
-    )
-}
--- a/codex-rs/app-server/tests/suite/v2/thread_list.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_list.rs
@@ -1,27 +1,17 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
 use app_test_support::create_fake_rollout;
-use app_test_support::rollout_path;
 use app_test_support::to_response;
-use chrono::DateTime;
-use chrono::Utc;
 use codex_app_server_protocol::GitInfo as ApiGitInfo;
-use codex_app_server_protocol::JSONRPCError;
 use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::RequestId;
 use codex_app_server_protocol::SessionSource;
 use codex_app_server_protocol::ThreadListResponse;
-use codex_app_server_protocol::ThreadSortKey;
 use codex_protocol::protocol::GitInfo as CoreGitInfo;
-use pretty_assertions::assert_eq;
-use std::cmp::Reverse;
-use std::fs::FileTimes;
-use std::fs::OpenOptions;
 use std::path::Path;
 use std::path::PathBuf;
 use tempfile::TempDir;
 use tokio::time::timeout;
-use uuid::Uuid;

 const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);

@@ -36,22 +26,11 @@ async fn list_threads(
    cursor: Option<String>,
    limit: Option<u32>,
    providers: Option<Vec<String>>,
-) -> Result<ThreadListResponse> {
-    list_threads_with_sort(mcp, cursor, limit, providers, None).await
-}
-
-async fn list_threads_with_sort(
-    mcp: &mut McpProcess,
-    cursor: Option<String>,
-    limit: Option<u32>,
-    providers: Option<Vec<String>>,
-    sort_key: Option<ThreadSortKey>,
 ) -> Result<ThreadListResponse> {
    let request_id = mcp
        .send_thread_list_request(codex_app_server_protocol::ThreadListParams {
            cursor,
            limit,
-            sort_key,
            model_providers: providers,
        })
        .await?;
@@ -103,16 +82,6 @@ fn timestamp_at(
    )
 }

-fn set_rollout_mtime(path: &Path, updated_at_rfc3339: &str) -> Result<()> {
-    let parsed = DateTime::parse_from_rfc3339(updated_at_rfc3339)?.with_timezone(&Utc);
-    let times = FileTimes::new().set_modified(parsed.into());
-    OpenOptions::new()
-        .append(true)
-        .open(path)?
-        .set_times(times)?;
-    Ok(())
-}
-
 #[tokio::test]
 async fn thread_list_basic_empty() -> Result<()> {
    let codex_home = TempDir::new()?;
@@ -194,7 +163,6 @@ async fn thread_list_pagination_next_cursor_none_on_last_page() -> Result<()> {
        assert_eq!(thread.preview, "Hello");
        assert_eq!(thread.model_provider, "mock_provider");
        assert!(thread.created_at > 0);
-        assert_eq!(thread.updated_at, thread.created_at);
        assert_eq!(thread.cwd, PathBuf::from("/"));
        assert_eq!(thread.cli_version, "0.0.0");
        assert_eq!(thread.source, SessionSource::Cli);
@@ -218,7 +186,6 @@ async fn thread_list_pagination_next_cursor_none_on_last_page() -> Result<()> {
        assert_eq!(thread.preview, "Hello");
        assert_eq!(thread.model_provider, "mock_provider");
        assert!(thread.created_at > 0);
-        assert_eq!(thread.updated_at, thread.created_at);
        assert_eq!(thread.cwd, PathBuf::from("/"));
        assert_eq!(thread.cli_version, "0.0.0");
        assert_eq!(thread.source, SessionSource::Cli);
@@ -269,7 +236,6 @@ async fn thread_list_respects_provider_filter() -> Result<()> {
    assert_eq!(thread.model_provider, "other_provider");
    let expected_ts = chrono::DateTime::parse_from_rfc3339("2025-01-02T11:00:00Z")?.timestamp();
    assert_eq!(thread.created_at, expected_ts);
-    assert_eq!(thread.updated_at, expected_ts);
    assert_eq!(thread.cwd, PathBuf::from("/"));
    assert_eq!(thread.cli_version, "0.0.0");
    assert_eq!(thread.source, SessionSource::Cli);
@@ -463,351 +429,3 @@ async fn thread_list_includes_git_info() -> Result<()> {

    Ok(())
 }
-
-#[tokio::test]
-async fn thread_list_default_sorts_by_created_at() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let id_a = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-02T12-00-00",
-        "2025-01-02T12:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_b = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-01T13-00-00",
-        "2025-01-01T13:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_c = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-01T12-00-00",
-        "2025-01-01T12:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let ThreadListResponse { data, .. } = list_threads_with_sort(
-        &mut mcp,
-        None,
-        Some(10),
-        Some(vec!["mock_provider".to_string()]),
-        None,
-    )
-    .await?;
-
-    let ids: Vec<_> = data.iter().map(|thread| thread.id.as_str()).collect();
-    assert_eq!(ids, vec![id_a.as_str(), id_b.as_str(), id_c.as_str()]);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_list_sort_updated_at_orders_by_mtime() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let id_old = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-01T10-00-00",
-        "2025-01-01T10:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_mid = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-01T11-00-00",
-        "2025-01-01T11:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_new = create_fake_rollout(
-        codex_home.path(),
-        "2025-01-01T12-00-00",
-        "2025-01-01T12:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-01-01T10-00-00", &id_old).as_path(),
-        "2025-01-03T00:00:00Z",
-    )?;
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-01-01T11-00-00", &id_mid).as_path(),
-        "2025-01-02T00:00:00Z",
-    )?;
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-01-01T12-00-00", &id_new).as_path(),
-        "2025-01-01T00:00:00Z",
-    )?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let ThreadListResponse { data, .. } = list_threads_with_sort(
-        &mut mcp,
-        None,
-        Some(10),
-        Some(vec!["mock_provider".to_string()]),
-        Some(ThreadSortKey::UpdatedAt),
-    )
-    .await?;
-
-    let ids: Vec<_> = data.iter().map(|thread| thread.id.as_str()).collect();
-    assert_eq!(ids, vec![id_old.as_str(), id_mid.as_str(), id_new.as_str()]);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_list_updated_at_paginates_with_cursor() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let id_a = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T10-00-00",
-        "2025-02-01T10:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_b = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T11-00-00",
-        "2025-02-01T11:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_c = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T12-00-00",
-        "2025-02-01T12:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-02-01T10-00-00", &id_a).as_path(),
-        "2025-02-03T00:00:00Z",
-    )?;
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-02-01T11-00-00", &id_b).as_path(),
-        "2025-02-02T00:00:00Z",
-    )?;
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-02-01T12-00-00", &id_c).as_path(),
-        "2025-02-01T00:00:00Z",
-    )?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let ThreadListResponse {
-        data: page1,
-        next_cursor: cursor1,
-    } = list_threads_with_sort(
-        &mut mcp,
-        None,
-        Some(2),
-        Some(vec!["mock_provider".to_string()]),
-        Some(ThreadSortKey::UpdatedAt),
-    )
-    .await?;
-    let ids_page1: Vec<_> = page1.iter().map(|thread| thread.id.as_str()).collect();
-    assert_eq!(ids_page1, vec![id_a.as_str(), id_b.as_str()]);
-    let cursor1 = cursor1.expect("expected nextCursor on first page");
-
-    let ThreadListResponse {
-        data: page2,
-        next_cursor: cursor2,
-    } = list_threads_with_sort(
-        &mut mcp,
-        Some(cursor1),
-        Some(2),
-        Some(vec!["mock_provider".to_string()]),
-        Some(ThreadSortKey::UpdatedAt),
-    )
-    .await?;
-    let ids_page2: Vec<_> = page2.iter().map(|thread| thread.id.as_str()).collect();
-    assert_eq!(ids_page2, vec![id_c.as_str()]);
-    assert_eq!(cursor2, None);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_list_created_at_tie_breaks_by_uuid() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let id_a = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T10-00-00",
-        "2025-02-01T10:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_b = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T10-00-00",
-        "2025-02-01T10:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let ThreadListResponse { data, .. } = list_threads(
-        &mut mcp,
-        None,
-        Some(10),
-        Some(vec!["mock_provider".to_string()]),
-    )
-    .await?;
-
-    let ids: Vec<_> = data.iter().map(|thread| thread.id.as_str()).collect();
-    let mut expected = [id_a, id_b];
-    expected.sort_by_key(|id| Reverse(Uuid::parse_str(id).expect("uuid should parse")));
-    let expected: Vec<_> = expected.iter().map(String::as_str).collect();
-    assert_eq!(ids, expected);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_list_updated_at_tie_breaks_by_uuid() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let id_a = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T10-00-00",
-        "2025-02-01T10:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-    let id_b = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T11-00-00",
-        "2025-02-01T11:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-
-    let updated_at = "2025-02-03T00:00:00Z";
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-02-01T10-00-00", &id_a).as_path(),
-        updated_at,
-    )?;
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-02-01T11-00-00", &id_b).as_path(),
-        updated_at,
-    )?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let ThreadListResponse { data, .. } = list_threads_with_sort(
-        &mut mcp,
-        None,
-        Some(10),
-        Some(vec!["mock_provider".to_string()]),
-        Some(ThreadSortKey::UpdatedAt),
-    )
-    .await?;
-
-    let ids: Vec<_> = data.iter().map(|thread| thread.id.as_str()).collect();
-    let mut expected = [id_a, id_b];
-    expected.sort_by_key(|id| Reverse(Uuid::parse_str(id).expect("uuid should parse")));
-    let expected: Vec<_> = expected.iter().map(String::as_str).collect();
-    assert_eq!(ids, expected);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_list_updated_at_uses_mtime() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let thread_id = create_fake_rollout(
-        codex_home.path(),
-        "2025-02-01T10-00-00",
-        "2025-02-01T10:00:00Z",
-        "Hello",
-        Some("mock_provider"),
-        None,
-    )?;
-
-    set_rollout_mtime(
-        rollout_path(codex_home.path(), "2025-02-01T10-00-00", &thread_id).as_path(),
-        "2025-02-05T00:00:00Z",
-    )?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let ThreadListResponse { data, .. } = list_threads_with_sort(
-        &mut mcp,
-        None,
-        Some(10),
-        Some(vec!["mock_provider".to_string()]),
-        Some(ThreadSortKey::UpdatedAt),
-    )
-    .await?;
-
-    let thread = data
-        .iter()
-        .find(|item| item.id == thread_id)
-        .expect("expected thread for created rollout");
-    let expected_created =
-        chrono::DateTime::parse_from_rfc3339("2025-02-01T10:00:00Z")?.timestamp();
-    let expected_updated =
-        chrono::DateTime::parse_from_rfc3339("2025-02-05T00:00:00Z")?.timestamp();
-    assert_eq!(thread.created_at, expected_created);
-    assert_eq!(thread.updated_at, expected_updated);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_list_invalid_cursor_returns_error() -> Result<()> {
-    let codex_home = TempDir::new()?;
-    create_minimal_config(codex_home.path())?;
-
-    let mut mcp = init_mcp(codex_home.path()).await?;
-
-    let request_id = mcp
-        .send_thread_list_request(codex_app_server_protocol::ThreadListParams {
-            cursor: Some("not-a-cursor".to_string()),
-            limit: Some(2),
-            sort_key: None,
-            model_providers: Some(vec!["mock_provider".to_string()]),
-        })
-        .await?;
-    let error: JSONRPCError = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_error_message(RequestId::Integer(request_id)),
-    )
-    .await??;
-    assert_eq!(error.error.code, -32600);
-    assert_eq!(error.error.message, "invalid cursor: not-a-cursor");
-
-    Ok(())
-}
--- a/codex-rs/app-server/tests/suite/v2/thread_loaded_list.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_loaded_list.rs
@@ -1,139 +0,0 @@
-use anyhow::Result;
-use app_test_support::McpProcess;
-use app_test_support::create_mock_responses_server_repeating_assistant;
-use app_test_support::to_response;
-use codex_app_server_protocol::JSONRPCResponse;
-use codex_app_server_protocol::RequestId;
-use codex_app_server_protocol::ThreadLoadedListParams;
-use codex_app_server_protocol::ThreadLoadedListResponse;
-use codex_app_server_protocol::ThreadStartParams;
-use codex_app_server_protocol::ThreadStartResponse;
-use pretty_assertions::assert_eq;
-use std::path::Path;
-use tempfile::TempDir;
-use tokio::time::timeout;
-
-const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
-
-#[tokio::test]
-async fn thread_loaded_list_returns_loaded_thread_ids() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let thread_id = start_thread(&mut mcp).await?;
-
-    let list_id = mcp
-        .send_thread_loaded_list_request(ThreadLoadedListParams::default())
-        .await?;
-    let resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(list_id)),
-    )
-    .await??;
-    let ThreadLoadedListResponse {
-        mut data,
-        next_cursor,
-    } = to_response::<ThreadLoadedListResponse>(resp)?;
-    data.sort();
-    assert_eq!(data, vec![thread_id]);
-    assert_eq!(next_cursor, None);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn thread_loaded_list_paginates() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let first = start_thread(&mut mcp).await?;
-    let second = start_thread(&mut mcp).await?;
-
-    let mut expected = [first, second];
-    expected.sort();
-
-    let list_id = mcp
-        .send_thread_loaded_list_request(ThreadLoadedListParams {
-            cursor: None,
-            limit: Some(1),
-        })
-        .await?;
-    let resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(list_id)),
-    )
-    .await??;
-    let ThreadLoadedListResponse {
-        data: first_page,
-        next_cursor,
-    } = to_response::<ThreadLoadedListResponse>(resp)?;
-    assert_eq!(first_page, vec![expected[0].clone()]);
-    assert_eq!(next_cursor, Some(expected[0].clone()));
-
-    let list_id = mcp
-        .send_thread_loaded_list_request(ThreadLoadedListParams {
-            cursor: next_cursor,
-            limit: Some(1),
-        })
-        .await?;
-    let resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(list_id)),
-    )
-    .await??;
-    let ThreadLoadedListResponse {
-        data: second_page,
-        next_cursor,
-    } = to_response::<ThreadLoadedListResponse>(resp)?;
-    assert_eq!(second_page, vec![expected[1].clone()]);
-    assert_eq!(next_cursor, None);
-
-    Ok(())
-}
-
-fn create_config_toml(codex_home: &Path, server_uri: &str) -> std::io::Result<()> {
-    let config_toml = codex_home.join("config.toml");
-    std::fs::write(
-        config_toml,
-        format!(
-            r#"
-model = "mock-model"
-approval_policy = "never"
-sandbox_mode = "read-only"
-
-model_provider = "mock_provider"
-
-[model_providers.mock_provider]
-name = "Mock provider for test"
-base_url = "{server_uri}/v1"
-wire_api = "responses"
-request_max_retries = 0
-stream_max_retries = 0
-"#
-        ),
-    )
-}
-
-async fn start_thread(mcp: &mut McpProcess) -> Result<String> {
-    let req_id = mcp
-        .send_thread_start_request(ThreadStartParams {
-            model: Some("gpt-5.1".to_string()),
-            ..Default::default()
-        })
-        .await?;
-    let resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(req_id)),
-    )
-    .await??;
-    let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(resp)?;
-    Ok(thread.id)
-}
--- a/codex-rs/app-server/tests/suite/v2/thread_resume.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_resume.rs
@@ -1,7 +1,7 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
-use app_test_support::create_fake_rollout_with_text_elements;
-use app_test_support::create_mock_responses_server_repeating_assistant;
+use app_test_support::create_fake_rollout;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::to_response;
 use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::RequestId;
@@ -15,9 +15,6 @@ use codex_app_server_protocol::TurnStatus;
 use codex_app_server_protocol::UserInput;
 use codex_protocol::models::ContentItem;
 use codex_protocol::models::ResponseItem;
-use codex_protocol::user_input::ByteRange;
-use codex_protocol::user_input::TextElement;
-use pretty_assertions::assert_eq;
 use std::path::PathBuf;
 use tempfile::TempDir;
 use tokio::time::timeout;
@@ -26,7 +23,7 @@ const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs

 #[tokio::test]
 async fn thread_resume_returns_original_thread() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

@@ -62,33 +59,23 @@ async fn thread_resume_returns_original_thread() -> Result<()> {
    let ThreadResumeResponse {
        thread: resumed, ..
    } = to_response::<ThreadResumeResponse>(resume_resp)?;
-    let mut expected = thread;
-    expected.updated_at = resumed.updated_at;
-    assert_eq!(resumed, expected);
+    assert_eq!(resumed, thread);

    Ok(())
 }

 #[tokio::test]
 async fn thread_resume_returns_rollout_history() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

    let preview = "Saved user message";
-    let text_elements = vec![TextElement::new(
-        ByteRange { start: 0, end: 5 },
-        Some("<note>".into()),
-    )];
-    let conversation_id = create_fake_rollout_with_text_elements(
+    let conversation_id = create_fake_rollout(
        codex_home.path(),
        "2025-01-05T12-00-00",
        "2025-01-05T12:00:00Z",
        preview,
-        text_elements
-            .iter()
-            .map(|elem| serde_json::to_value(elem).expect("serialize text element"))
-            .collect(),
        Some("mock_provider"),
        None,
    )?;
@@ -131,8 +118,7 @@ async fn thread_resume_returns_rollout_history() -> Result<()> {
            assert_eq!(
                content,
                &vec![UserInput::Text {
-                    text: preview.to_string(),
-                    text_elements: text_elements.clone().into_iter().map(Into::into).collect(),
+                    text: preview.to_string()
                }]
            );
        }
@@ -144,7 +130,7 @@ async fn thread_resume_returns_rollout_history() -> Result<()> {

 #[tokio::test]
 async fn thread_resume_prefers_path_over_thread_id() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

@@ -181,16 +167,14 @@ async fn thread_resume_prefers_path_over_thread_id() -> Result<()> {
    let ThreadResumeResponse {
        thread: resumed, ..
    } = to_response::<ThreadResumeResponse>(resume_resp)?;
-    let mut expected = thread;
-    expected.updated_at = resumed.updated_at;
-    assert_eq!(resumed, expected);
+    assert_eq!(resumed, thread);

    Ok(())
 }

 #[tokio::test]
 async fn thread_resume_supports_history_and_overrides() -> Result<()> {
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server(vec![]).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;

@@ -263,7 +247,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/v2/thread_rollback.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_rollback.rs
@@ -1,7 +1,7 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
 use app_test_support::create_final_assistant_message_sse_response;
-use app_test_support::create_mock_responses_server_sequence_unchecked;
+use app_test_support::create_mock_chat_completions_server_unchecked;
 use app_test_support::to_response;
 use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::RequestId;
@@ -28,7 +28,7 @@ async fn thread_rollback_drops_last_turns_and_persists_to_rollout() -> Result<()
        create_final_assistant_message_sse_response("Done")?,
        create_final_assistant_message_sse_response("Done")?,
    ];
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
+    let server = create_mock_chat_completions_server_unchecked(responses).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;
@@ -57,7 +57,6 @@ async fn thread_rollback_drops_last_turns_and_persists_to_rollout() -> Result<()
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: first_text.to_string(),
-                text_elements: Vec::new(),
            }],
            ..Default::default()
        })
@@ -78,7 +77,6 @@ async fn thread_rollback_drops_last_turns_and_persists_to_rollout() -> Result<()
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "Second".to_string(),
-                text_elements: Vec::new(),
            }],
            ..Default::default()
        })
@@ -117,8 +115,7 @@ async fn thread_rollback_drops_last_turns_and_persists_to_rollout() -> Result<()
            assert_eq!(
                content,
                &vec![V2UserInput::Text {
-                    text: first_text.to_string(),
-                    text_elements: Vec::new(),
+                    text: first_text.to_string()
                }]
            );
        }
@@ -146,8 +143,7 @@ async fn thread_rollback_drops_last_turns_and_persists_to_rollout() -> Result<()
            assert_eq!(
                content,
                &vec![V2UserInput::Text {
-                    text: first_text.to_string(),
-                    text_elements: Vec::new(),
+                    text: first_text.to_string()
                }]
            );
        }
@@ -172,7 +168,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/v2/thread_start.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_start.rs
@@ -1,6 +1,6 @@
 use anyhow::Result;
 use app_test_support::McpProcess;
-use app_test_support::create_mock_responses_server_repeating_assistant;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::to_response;
 use codex_app_server_protocol::JSONRPCNotification;
 use codex_app_server_protocol::JSONRPCResponse;
@@ -17,7 +17,7 @@ const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs
 #[tokio::test]
 async fn thread_start_creates_thread_and_emits_started() -> Result<()> {
    // Provide a mock server and config so model wiring is valid.
-    let server = create_mock_responses_server_repeating_assistant("Done").await;
+    let server = create_mock_chat_completions_server(vec![]).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri())?;
@@ -85,7 +85,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/v2/turn_interrupt.rs
+++ b/codex-rs/app-server/tests/suite/v2/turn_interrupt.rs
@@ -2,7 +2,7 @@

 use anyhow::Result;
 use app_test_support::McpProcess;
-use app_test_support::create_mock_responses_server_sequence;
+use app_test_support::create_mock_chat_completions_server;
 use app_test_support::create_shell_command_sse_response;
 use app_test_support::to_response;
 use codex_app_server_protocol::JSONRPCNotification;
@@ -41,7 +41,7 @@ async fn turn_interrupt_aborts_running_turn() -> Result<()> {
    std::fs::create_dir(&working_directory)?;

    // Mock server: long-running shell command then (after abort) nothing else needed.
-    let server = create_mock_responses_server_sequence(vec![create_shell_command_sse_response(
+    let server = create_mock_chat_completions_server(vec![create_shell_command_sse_response(
        shell_command.clone(),
        Some(&working_directory),
        Some(10_000),
@@ -73,7 +73,6 @@ async fn turn_interrupt_aborts_running_turn() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "run sleep".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(working_directory.clone()),
            ..Default::default()
@@ -136,7 +135,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/app-server/tests/suite/v2/turn_start.rs
+++ b/codex-rs/app-server/tests/suite/v2/turn_start.rs
@@ -3,13 +3,11 @@ use app_test_support::McpProcess;
 use app_test_support::create_apply_patch_sse_response;
 use app_test_support::create_exec_command_sse_response;
 use app_test_support::create_final_assistant_message_sse_response;
-use app_test_support::create_mock_responses_server_sequence;
-use app_test_support::create_mock_responses_server_sequence_unchecked;
+use app_test_support::create_mock_chat_completions_server;
+use app_test_support::create_mock_chat_completions_server_unchecked;
 use app_test_support::create_shell_command_sse_response;
 use app_test_support::format_with_current_shell_display;
 use app_test_support::to_response;
-use codex_app_server_protocol::ByteRange;
-use codex_app_server_protocol::ClientInfo;
 use codex_app_server_protocol::CommandExecutionApprovalDecision;
 use codex_app_server_protocol::CommandExecutionRequestApprovalResponse;
 use codex_app_server_protocol::CommandExecutionStatus;
@@ -24,7 +22,6 @@ use codex_app_server_protocol::PatchApplyStatus;
 use codex_app_server_protocol::PatchChangeKind;
 use codex_app_server_protocol::RequestId;
 use codex_app_server_protocol::ServerRequest;
-use codex_app_server_protocol::TextElement;
 use codex_app_server_protocol::ThreadItem;
 use codex_app_server_protocol::ThreadStartParams;
 use codex_app_server_protocol::ThreadStartResponse;
@@ -35,10 +32,7 @@ use codex_app_server_protocol::TurnStartedNotification;
 use codex_app_server_protocol::TurnStatus;
 use codex_app_server_protocol::UserInput as V2UserInput;
 use codex_core::protocol_config_types::ReasoningSummary;
-use codex_protocol::config_types::CollaborationMode;
-use codex_protocol::config_types::Settings;
 use codex_protocol::openai_models::ReasoningEffort;
-use core_test_support::responses;
 use core_test_support::skip_if_no_network;
 use pretty_assertions::assert_eq;
 use std::path::Path;
@@ -46,158 +40,6 @@ use tempfile::TempDir;
 use tokio::time::timeout;

 const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
-const TEST_ORIGINATOR: &str = "codex_vscode";
-
-#[tokio::test]
-async fn turn_start_sends_originator_header() -> Result<()> {
-    let responses = vec![create_final_assistant_message_sse_response("Done")?];
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
-
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri(), "never")?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.initialize_with_client_info(ClientInfo {
-            name: TEST_ORIGINATOR.to_string(),
-            title: Some("Codex VS Code Extension".to_string()),
-            version: "0.1.0".to_string(),
-        }),
-    )
-    .await??;
-
-    let thread_req = mcp
-        .send_thread_start_request(ThreadStartParams {
-            model: Some("mock-model".to_string()),
-            ..Default::default()
-        })
-        .await?;
-    let thread_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(thread_req)),
-    )
-    .await??;
-    let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(thread_resp)?;
-
-    let turn_req = mcp
-        .send_turn_start_request(TurnStartParams {
-            thread_id: thread.id.clone(),
-            input: vec![V2UserInput::Text {
-                text: "Hello".to_string(),
-                text_elements: Vec::new(),
-            }],
-            ..Default::default()
-        })
-        .await?;
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(turn_req)),
-    )
-    .await??;
-
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("turn/completed"),
-    )
-    .await??;
-
-    let requests = server
-        .received_requests()
-        .await
-        .expect("failed to fetch received requests");
-    assert!(!requests.is_empty());
-    for request in requests {
-        let originator = request
-            .headers
-            .get("originator")
-            .expect("originator header missing");
-        assert_eq!(originator.to_str()?, TEST_ORIGINATOR);
-    }
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn turn_start_emits_user_message_item_with_text_elements() -> Result<()> {
-    let responses = vec![create_final_assistant_message_sse_response("Done")?];
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
-
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri(), "never")?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let thread_req = mcp
-        .send_thread_start_request(ThreadStartParams {
-            model: Some("mock-model".to_string()),
-            ..Default::default()
-        })
-        .await?;
-    let thread_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(thread_req)),
-    )
-    .await??;
-    let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(thread_resp)?;
-
-    let text_elements = vec![TextElement::new(
-        ByteRange { start: 0, end: 5 },
-        Some("<note>".to_string()),
-    )];
-    let turn_req = mcp
-        .send_turn_start_request(TurnStartParams {
-            thread_id: thread.id.clone(),
-            input: vec![V2UserInput::Text {
-                text: "Hello".to_string(),
-                text_elements: text_elements.clone(),
-            }],
-            ..Default::default()
-        })
-        .await?;
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(turn_req)),
-    )
-    .await??;
-
-    let user_message_item = timeout(DEFAULT_READ_TIMEOUT, async {
-        loop {
-            let notification = mcp
-                .read_stream_until_notification_message("item/started")
-                .await?;
-            let params = notification.params.expect("item/started params");
-            let item_started: ItemStartedNotification =
-                serde_json::from_value(params).expect("deserialize item/started notification");
-            if let ThreadItem::UserMessage { .. } = item_started.item {
-                return Ok::<ThreadItem, anyhow::Error>(item_started.item);
-            }
-        }
-    })
-    .await??;
-
-    match user_message_item {
-        ThreadItem::UserMessage { content, .. } => {
-            assert_eq!(
-                content,
-                vec![V2UserInput::Text {
-                    text: "Hello".to_string(),
-                    text_elements,
-                }]
-            );
-        }
-        other => panic!("expected user message item, got {other:?}"),
-    }
-
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("turn/completed"),
-    )
-    .await??;
-
-    Ok(())
-}

 #[tokio::test]
 async fn turn_start_emits_notifications_and_accepts_model_override() -> Result<()> {
@@ -208,7 +50,7 @@ async fn turn_start_emits_notifications_and_accepts_model_override() -> Result<(
        create_final_assistant_message_sse_response("Done")?,
        create_final_assistant_message_sse_response("Done")?,
    ];
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
+    let server = create_mock_chat_completions_server_unchecked(responses).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri(), "never")?;
@@ -236,7 +78,6 @@ async fn turn_start_emits_notifications_and_accepts_model_override() -> Result<(
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "Hello".to_string(),
-                text_elements: Vec::new(),
            }],
            ..Default::default()
        })
@@ -269,7 +110,6 @@ async fn turn_start_emits_notifications_and_accepts_model_override() -> Result<(
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "Second".to_string(),
-                text_elements: Vec::new(),
            }],
            model: Some("mock-model-override".to_string()),
            ..Default::default()
@@ -308,77 +148,6 @@ async fn turn_start_emits_notifications_and_accepts_model_override() -> Result<(
    Ok(())
 }

-#[tokio::test]
-async fn turn_start_accepts_collaboration_mode_override_v2() -> Result<()> {
-    skip_if_no_network!(Ok(()));
-
-    let server = responses::start_mock_server().await;
-    let body = responses::sse(vec![
-        responses::ev_response_created("resp-1"),
-        responses::ev_assistant_message("msg-1", "Done"),
-        responses::ev_completed("resp-1"),
-    ]);
-    let response_mock = responses::mount_sse_once(&server, body).await;
-
-    let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri(), "never")?;
-
-    let mut mcp = McpProcess::new(codex_home.path()).await?;
-    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
-
-    let thread_req = mcp
-        .send_thread_start_request(ThreadStartParams {
-            ..Default::default()
-        })
-        .await?;
-    let thread_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(thread_req)),
-    )
-    .await??;
-    let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(thread_resp)?;
-
-    let collaboration_mode = CollaborationMode::Custom(Settings {
-        model: "mock-model-collab".to_string(),
-        reasoning_effort: Some(ReasoningEffort::High),
-        developer_instructions: None,
-    });
-
-    let turn_req = mcp
-        .send_turn_start_request(TurnStartParams {
-            thread_id: thread.id.clone(),
-            input: vec![V2UserInput::Text {
-                text: "Hello".to_string(),
-                text_elements: Vec::new(),
-            }],
-            model: Some("mock-model-override".to_string()),
-            effort: Some(ReasoningEffort::Low),
-            summary: Some(ReasoningSummary::Auto),
-            output_schema: None,
-            collaboration_mode: Some(collaboration_mode),
-            ..Default::default()
-        })
-        .await?;
-    let turn_resp: JSONRPCResponse = timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_response_message(RequestId::Integer(turn_req)),
-    )
-    .await??;
-    let _turn: TurnStartResponse = to_response::<TurnStartResponse>(turn_resp)?;
-
-    timeout(
-        DEFAULT_READ_TIMEOUT,
-        mcp.read_stream_until_notification_message("turn/completed"),
-    )
-    .await??;
-
-    let request = response_mock.single_request();
-    let payload = request.body_json();
-    assert_eq!(payload["model"].as_str(), Some("mock-model-collab"));
-
-    Ok(())
-}
-
 #[tokio::test]
 async fn turn_start_accepts_local_image_input() -> Result<()> {
    // Two Codex turns hit the mock model (session start + turn/start).
@@ -388,7 +157,7 @@ async fn turn_start_accepts_local_image_input() -> Result<()> {
    ];
    // Use the unchecked variant because the request payload includes a LocalImage
    // which the strict matcher does not currently cover.
-    let server = create_mock_responses_server_sequence_unchecked(responses).await;
+    let server = create_mock_chat_completions_server_unchecked(responses).await;

    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri(), "never")?;
@@ -464,7 +233,7 @@ async fn turn_start_exec_approval_toggle_v2() -> Result<()> {
        )?,
        create_final_assistant_message_sse_response("done 2")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    // Default approval is untrusted to force elicitation on first turn.
    create_config_toml(codex_home.as_path(), &server.uri(), "untrusted")?;

@@ -491,7 +260,6 @@ async fn turn_start_exec_approval_toggle_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "run python".to_string(),
-                text_elements: Vec::new(),
            }],
            ..Default::default()
        })
@@ -537,7 +305,6 @@ async fn turn_start_exec_approval_toggle_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "run python again".to_string(),
-                text_elements: Vec::new(),
            }],
            approval_policy: Some(codex_app_server_protocol::AskForApproval::Never),
            sandbox_policy: Some(codex_app_server_protocol::SandboxPolicy::DangerFullAccess),
@@ -590,7 +357,7 @@ async fn turn_start_exec_approval_decline_v2() -> Result<()> {
        )?,
        create_final_assistant_message_sse_response("done")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(codex_home.as_path(), &server.uri(), "untrusted")?;

    let mut mcp = McpProcess::new(codex_home.as_path()).await?;
@@ -614,7 +381,6 @@ async fn turn_start_exec_approval_decline_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "run python".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(workspace.clone()),
            ..Default::default()
@@ -737,7 +503,7 @@ async fn turn_start_updates_sandbox_and_cwd_between_turns_v2() -> Result<()> {
        )?,
        create_final_assistant_message_sse_response("done second")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri(), "untrusted")?;

    let mut mcp = McpProcess::new(&codex_home).await?;
@@ -763,7 +529,6 @@ async fn turn_start_updates_sandbox_and_cwd_between_turns_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "first turn".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(first_cwd.clone()),
            approval_policy: Some(codex_app_server_protocol::AskForApproval::Never),
@@ -777,7 +542,6 @@ async fn turn_start_updates_sandbox_and_cwd_between_turns_v2() -> Result<()> {
            effort: Some(ReasoningEffort::Medium),
            summary: Some(ReasoningSummary::Auto),
            output_schema: None,
-            collaboration_mode: None,
        })
        .await?;
    timeout(
@@ -790,7 +554,6 @@ async fn turn_start_updates_sandbox_and_cwd_between_turns_v2() -> Result<()> {
        mcp.read_stream_until_notification_message("codex/event/task_complete"),
    )
    .await??;
-    mcp.clear_message_buffer();

    // second turn with workspace-write and second_cwd, ensure exec begins in second_cwd
    let second_turn = mcp
@@ -798,7 +561,6 @@ async fn turn_start_updates_sandbox_and_cwd_between_turns_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "second turn".to_string(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(second_cwd.clone()),
            approval_policy: Some(codex_app_server_protocol::AskForApproval::Never),
@@ -807,7 +569,6 @@ async fn turn_start_updates_sandbox_and_cwd_between_turns_v2() -> Result<()> {
            effort: Some(ReasoningEffort::Medium),
            summary: Some(ReasoningSummary::Auto),
            output_schema: None,
-            collaboration_mode: None,
        })
        .await?;
    timeout(
@@ -875,7 +636,7 @@ async fn turn_start_file_change_approval_v2() -> Result<()> {
        create_apply_patch_sse_response(patch, "patch-call")?,
        create_final_assistant_message_sse_response("patch applied")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri(), "untrusted")?;

    let mut mcp = McpProcess::new(&codex_home).await?;
@@ -900,7 +661,6 @@ async fn turn_start_file_change_approval_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "apply patch".into(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(workspace.clone()),
            ..Default::default()
@@ -1052,7 +812,7 @@ async fn turn_start_file_change_approval_accept_for_session_persists_v2() -> Res
        create_apply_patch_sse_response(patch_2, "patch-call-2")?,
        create_final_assistant_message_sse_response("patch 2 applied")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri(), "untrusted")?;

    let mut mcp = McpProcess::new(&codex_home).await?;
@@ -1078,7 +838,6 @@ async fn turn_start_file_change_approval_accept_for_session_persists_v2() -> Res
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "apply patch 1".into(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(workspace.clone()),
            ..Default::default()
@@ -1155,7 +914,6 @@ async fn turn_start_file_change_approval_accept_for_session_persists_v2() -> Res
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "apply patch 2".into(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(workspace.clone()),
            ..Default::default()
@@ -1228,7 +986,7 @@ async fn turn_start_file_change_approval_decline_v2() -> Result<()> {
        create_apply_patch_sse_response(patch, "patch-call")?,
        create_final_assistant_message_sse_response("patch declined")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    create_config_toml(&codex_home, &server.uri(), "untrusted")?;

    let mut mcp = McpProcess::new(&codex_home).await?;
@@ -1253,7 +1011,6 @@ async fn turn_start_file_change_approval_decline_v2() -> Result<()> {
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "apply patch".into(),
-                text_elements: Vec::new(),
            }],
            cwd: Some(workspace.clone()),
            ..Default::default()
@@ -1367,7 +1124,7 @@ async fn command_execution_notifications_include_process_id() -> Result<()> {
        create_exec_command_sse_response("uexec-1")?,
        create_final_assistant_message_sse_response("done")?,
    ];
-    let server = create_mock_responses_server_sequence(responses).await;
+    let server = create_mock_chat_completions_server(responses).await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri(), "never")?;
    let config_toml = codex_home.path().join("config.toml");
@@ -1401,7 +1158,6 @@ unified_exec = true
            thread_id: thread.id.clone(),
            input: vec![V2UserInput::Text {
                text: "run a command".to_string(),
-                text_elements: Vec::new(),
            }],
            ..Default::default()
        })
@@ -1471,18 +1227,8 @@ unified_exec = true
        unreachable!("loop ensures we break on command execution items");
    };
    assert_eq!(completed_id, "uexec-1");
-    assert!(
-        matches!(
-            completed_status,
-            CommandExecutionStatus::Completed | CommandExecutionStatus::Failed
-        ),
-        "unexpected command execution status: {completed_status:?}"
-    );
-    if completed_status == CommandExecutionStatus::Completed {
-        assert_eq!(exit_code, Some(0));
-    } else {
-        assert!(exit_code.is_some(), "expected exit_code for failed command");
-    }
+    assert_eq!(completed_status, CommandExecutionStatus::Completed);
+    assert_eq!(exit_code, Some(0));
    assert_eq!(
        completed_process_id.as_deref(),
        Some(started_process_id.as_str())
@@ -1517,7 +1263,7 @@ model_provider = "mock_provider"
 [model_providers.mock_provider]
 name = "Mock provider for test"
 base_url = "{server_uri}/v1"
-wire_api = "responses"
+wire_api = "chat"
 request_max_retries = 0
 stream_max_retries = 0
 "#
--- a/codex-rs/apply-patch/BUILD.bazel
+++ b/codex-rs/apply-patch/BUILD.bazel
@@ -1,11 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-exports_files(["apply_patch_tool_instructions.md"])
-
-codex_rust_crate(
-    name = "apply-patch",
-    crate_name = "codex_apply_patch",
-    compile_data = [
-        "apply_patch_tool_instructions.md",
-    ],
-)
--- a/codex-rs/apply-patch/tests/suite/scenarios.rs
+++ b/codex-rs/apply-patch/tests/suite/scenarios.rs
@@ -1,4 +1,3 @@
-use codex_utils_cargo_bin::find_resource;
 use pretty_assertions::assert_eq;
 use std::collections::BTreeMap;
 use std::fs;
@@ -9,7 +8,7 @@ use tempfile::tempdir;

 #[test]
 fn test_apply_patch_scenarios() -> anyhow::Result<()> {
-    let scenarios_dir = find_resource!("tests/fixtures/scenarios")?;
+    let scenarios_dir = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/fixtures/scenarios");
    for scenario in fs::read_dir(scenarios_dir)? {
        let scenario = scenario?;
        let path = scenario.path();
--- a/codex-rs/arg0/BUILD.bazel
+++ b/codex-rs/arg0/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "arg0",
-    crate_name = "codex_arg0",
-)
--- a/codex-rs/arg0/src/lib.rs
+++ b/codex-rs/arg0/src/lib.rs
@@ -145,41 +145,11 @@ where
 /// that `apply_patch` can be on the PATH without requiring the user to
 /// install a separate `apply_patch` executable, simplifying the deployment of
 /// Codex CLI.
-/// Note: In debug builds the temp-dir guard is disabled to ease local testing.
 ///
 /// IMPORTANT: This function modifies the PATH environment variable, so it MUST
 /// be called before multiple threads are spawned.
 pub fn prepend_path_entry_for_codex_aliases() -> std::io::Result<TempDir> {
-    let codex_home = codex_core::config::find_codex_home()?;
-    #[cfg(not(debug_assertions))]
-    {
-        // Guard against placing helpers in system temp directories outside debug builds.
-        let temp_root = std::env::temp_dir();
-        if codex_home.starts_with(&temp_root) {
-            return Err(std::io::Error::new(
-                std::io::ErrorKind::InvalidInput,
-                format!(
-                    "Refusing to create helper binaries under temporary dir {temp_root:?} (codex_home: {codex_home:?})"
-                ),
-            ));
-        }
-    }
-
-    std::fs::create_dir_all(&codex_home)?;
-    // Use a CODEX_HOME-scoped temp root to avoid cluttering the top-level directory.
-    let temp_root = codex_home.join("tmp").join("path");
-    std::fs::create_dir_all(&temp_root)?;
-    #[cfg(unix)]
-    {
-        use std::os::unix::fs::PermissionsExt;
-
-        // Ensure only the current user can access the temp directory.
-        std::fs::set_permissions(&temp_root, std::fs::Permissions::from_mode(0o700))?;
-    }
-
-    let temp_dir = tempfile::Builder::new()
-        .prefix("codex-arg0")
-        .tempdir_in(&temp_root)?;
+    let temp_dir = TempDir::new()?;
    let path = temp_dir.path();

    for filename in &[
--- a/codex-rs/async-utils/BUILD.bazel
+++ b/codex-rs/async-utils/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "async-utils",
-    crate_name = "codex_async_utils",
-)
--- a/codex-rs/backend-client/BUILD.bazel
+++ b/codex-rs/backend-client/BUILD.bazel
@@ -1,7 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "backend-client",
-    crate_name = "codex_backend_client",
-    compile_data = glob(["tests/fixtures/**"]),
-)
--- a/codex-rs/backend-client/Cargo.toml
+++ b/codex-rs/backend-client/Cargo.toml
@@ -12,7 +12,7 @@ path = "src/lib.rs"
 anyhow = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls-webpki-roots", "rustls-tls-native-roots"] }
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }
 codex-backend-openapi-models = { path = "../codex-backend-openapi-models" }
 codex-protocol = { workspace = true }
 codex-core = { workspace = true }
--- a/codex-rs/backend-client/src/client.rs
+++ b/codex-rs/backend-client/src/client.rs
@@ -73,8 +73,8 @@ impl Client {
        })
    }

-    pub fn from_auth(base_url: impl Into<String>, auth: &CodexAuth) -> Result<Self> {
-        let token = auth.get_token().map_err(anyhow::Error::from)?;
+    pub async fn from_auth(base_url: impl Into<String>, auth: &CodexAuth) -> Result<Self> {
+        let token = auth.get_token().await.map_err(anyhow::Error::from)?;
        let mut client = Self::new(base_url)?
            .with_user_agent(get_codex_user_agent())
            .with_bearer_token(token);
@@ -174,7 +174,6 @@ impl Client {
        limit: Option<i32>,
        task_filter: Option<&str>,
        environment_id: Option<&str>,
-        cursor: Option<&str>,
    ) -> Result<PaginatedListTaskListItem> {
        let url = match self.path_style {
            PathStyle::CodexApi => format!("{}/api/codex/tasks/list", self.base_url),
@@ -191,11 +190,6 @@ impl Client {
        } else {
            req
        };
-        let req = if let Some(c) = cursor {
-            req.query(&[("cursor", c)])
-        } else {
-            req
-        };
        let req = if let Some(id) = environment_id {
            req.query(&[("environment_id", id)])
        } else {
--- a/codex-rs/chatgpt/BUILD.bazel
+++ b/codex-rs/chatgpt/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "chatgpt",
-    crate_name = "codex_chatgpt",
-)
--- a/codex-rs/chatgpt/Cargo.toml
+++ b/codex-rs/chatgpt/Cargo.toml
@@ -12,7 +12,6 @@ anyhow = { workspace = true }
 clap = { workspace = true, features = ["derive"] }
 codex-common = { workspace = true, features = ["cli"] }
 codex-core = { workspace = true }
-codex-utils-cargo-bin = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 tokio = { workspace = true, features = ["full"] }
--- a/codex-rs/chatgpt/src/chatgpt_token.rs
+++ b/codex-rs/chatgpt/src/chatgpt_token.rs
@@ -1,4 +1,4 @@
-use codex_core::AuthManager;
+use codex_core::CodexAuth;
 use std::path::Path;
 use std::sync::LazyLock;
 use std::sync::RwLock;
@@ -23,10 +23,9 @@ pub async fn init_chatgpt_token_from_auth(
    codex_home: &Path,
    auth_credentials_store_mode: AuthCredentialsStoreMode,
 ) -> std::io::Result<()> {
-    let auth_manager =
-        AuthManager::new(codex_home.to_path_buf(), false, auth_credentials_store_mode);
-    if let Some(auth) = auth_manager.auth().await {
-        let token_data = auth.get_token_data()?;
+    let auth = CodexAuth::from_auth_storage(codex_home, auth_credentials_store_mode)?;
+    if let Some(auth) = auth {
+        let token_data = auth.get_token_data().await?;
        set_chatgpt_token_data(token_data);
    }
    Ok(())
--- a/codex-rs/chatgpt/tests/suite/apply_command_e2e.rs
+++ b/codex-rs/chatgpt/tests/suite/apply_command_e2e.rs
@@ -1,6 +1,6 @@
 use codex_chatgpt::apply_command::apply_diff_from_task;
 use codex_chatgpt::get_task::GetTaskResponse;
-use codex_utils_cargo_bin::find_resource;
+use std::path::Path;
 use tempfile::TempDir;
 use tokio::process::Command;

@@ -68,8 +68,8 @@ async fn create_temp_git_repo() -> anyhow::Result<TempDir> {
 }

 async fn mock_get_task_with_fixture() -> anyhow::Result<GetTaskResponse> {
-    let fixture_path = find_resource!("tests/task_turn_fixture.json")?;
-    let fixture_content = tokio::fs::read_to_string(fixture_path).await?;
+    let fixture_path = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/task_turn_fixture.json");
+    let fixture_content = std::fs::read_to_string(fixture_path)?;
    let response: GetTaskResponse = serde_json::from_str(&fixture_content)?;
    Ok(response)
 }
--- a/codex-rs/cli/BUILD.bazel
+++ b/codex-rs/cli/BUILD.bazel
@@ -1,10 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate", "multiplatform_binaries")
-
-codex_rust_crate(
-    name = "cli",
-    crate_name = "codex_cli",
-)
-
-multiplatform_binaries(
-    name = "codex",
-)
--- a/codex-rs/cli/Cargo.toml
+++ b/codex-rs/cli/Cargo.toml
@@ -30,6 +30,7 @@ codex-exec = { workspace = true }
 codex-execpolicy = { workspace = true }
 codex-login = { workspace = true }
 codex-mcp-server = { workspace = true }
+codex-process-hardening = { workspace = true }
 codex-protocol = { workspace = true }
 codex-responses-api-proxy = { workspace = true }
 codex-rmcp-client = { workspace = true }
@@ -37,6 +38,7 @@ codex-stdio-to-uds = { workspace = true }
 codex-tui = { workspace = true }
 codex-tui2 = { workspace = true }
 codex-utils-absolute-path = { workspace = true }
+ctor = { workspace = true }
 libc = { workspace = true }
 owo-colors = { workspace = true }
 regex-lite = { workspace = true }
--- a/codex-rs/cli/src/login.rs
+++ b/codex-rs/cli/src/login.rs
@@ -14,18 +14,6 @@ use std::io::IsTerminal;
 use std::io::Read;
 use std::path::PathBuf;

-const CHATGPT_LOGIN_DISABLED_MESSAGE: &str =
-    "ChatGPT login is disabled. Use API key login instead.";
-const API_KEY_LOGIN_DISABLED_MESSAGE: &str =
-    "API key login is disabled. Use ChatGPT login instead.";
-const LOGIN_SUCCESS_MESSAGE: &str = "Successfully logged in";
-
-fn print_login_server_start(actual_port: u16, auth_url: &str) {
-    eprintln!(
-        "Starting local login server on http://localhost:{actual_port}.\nIf your browser did not open, navigate to this URL to authenticate:\n\n{auth_url}"
-    );
-}
-
 pub async fn login_with_chatgpt(
    codex_home: PathBuf,
    forced_chatgpt_workspace_id: Option<String>,
@@ -39,7 +27,10 @@ pub async fn login_with_chatgpt(
    );
    let server = run_login_server(opts)?;

-    print_login_server_start(server.actual_port, &server.auth_url);
+    eprintln!(
+        "Starting local login server on http://localhost:{}.\nIf your browser did not open, navigate to this URL to authenticate:\n\n{}",
+        server.actual_port, server.auth_url,
+    );

    server.block_until_done().await
 }
@@ -48,7 +39,7 @@ pub async fn run_login_with_chatgpt(cli_config_overrides: CliConfigOverrides) ->
    let config = load_config_or_exit(cli_config_overrides).await;

    if matches!(config.forced_login_method, Some(ForcedLoginMethod::Api)) {
-        eprintln!("{CHATGPT_LOGIN_DISABLED_MESSAGE}");
+        eprintln!("ChatGPT login is disabled. Use API key login instead.");
        std::process::exit(1);
    }

@@ -62,7 +53,7 @@ pub async fn run_login_with_chatgpt(cli_config_overrides: CliConfigOverrides) ->
    .await
    {
        Ok(_) => {
-            eprintln!("{LOGIN_SUCCESS_MESSAGE}");
+            eprintln!("Successfully logged in");
            std::process::exit(0);
        }
        Err(e) => {
@@ -79,7 +70,7 @@ pub async fn run_login_with_api_key(
    let config = load_config_or_exit(cli_config_overrides).await;

    if matches!(config.forced_login_method, Some(ForcedLoginMethod::Chatgpt)) {
-        eprintln!("{API_KEY_LOGIN_DISABLED_MESSAGE}");
+        eprintln!("API key login is disabled. Use ChatGPT login instead.");
        std::process::exit(1);
    }

@@ -89,7 +80,7 @@ pub async fn run_login_with_api_key(
        config.cli_auth_credentials_store_mode,
    ) {
        Ok(_) => {
-            eprintln!("{LOGIN_SUCCESS_MESSAGE}");
+            eprintln!("Successfully logged in");
            std::process::exit(0);
        }
        Err(e) => {
@@ -134,7 +125,7 @@ pub async fn run_login_with_device_code(
 ) -> ! {
    let config = load_config_or_exit(cli_config_overrides).await;
    if matches!(config.forced_login_method, Some(ForcedLoginMethod::Api)) {
-        eprintln!("{CHATGPT_LOGIN_DISABLED_MESSAGE}");
+        eprintln!("ChatGPT login is disabled. Use API key login instead.");
        std::process::exit(1);
    }
    let forced_chatgpt_workspace_id = config.forced_chatgpt_workspace_id.clone();
@@ -149,7 +140,7 @@ pub async fn run_login_with_device_code(
    }
    match run_device_code_login(opts).await {
        Ok(()) => {
-            eprintln!("{LOGIN_SUCCESS_MESSAGE}");
+            eprintln!("Successfully logged in");
            std::process::exit(0);
        }
        Err(e) => {
@@ -159,74 +150,12 @@ pub async fn run_login_with_device_code(
    }
 }

-/// Prefers device-code login (with `open_browser = false`) when headless environment is detected, but keeps
-/// `codex login` working in environments where device-code may be disabled/feature-gated.
-/// If `run_device_code_login` returns `ErrorKind::NotFound` ("device-code unsupported"), this
-/// falls back to starting the local browser login server.
-pub async fn run_login_with_device_code_fallback_to_browser(
-    cli_config_overrides: CliConfigOverrides,
-    issuer_base_url: Option<String>,
-    client_id: Option<String>,
-) -> ! {
-    let config = load_config_or_exit(cli_config_overrides).await;
-    if matches!(config.forced_login_method, Some(ForcedLoginMethod::Api)) {
-        eprintln!("{CHATGPT_LOGIN_DISABLED_MESSAGE}");
-        std::process::exit(1);
-    }
-
-    let forced_chatgpt_workspace_id = config.forced_chatgpt_workspace_id.clone();
-    let mut opts = ServerOptions::new(
-        config.codex_home,
-        client_id.unwrap_or(CLIENT_ID.to_string()),
-        forced_chatgpt_workspace_id,
-        config.cli_auth_credentials_store_mode,
-    );
-    if let Some(iss) = issuer_base_url {
-        opts.issuer = iss;
-    }
-    opts.open_browser = false;
-
-    match run_device_code_login(opts.clone()).await {
-        Ok(()) => {
-            eprintln!("{LOGIN_SUCCESS_MESSAGE}");
-            std::process::exit(0);
-        }
-        Err(e) => {
-            if e.kind() == std::io::ErrorKind::NotFound {
-                eprintln!("Device code login is not enabled; falling back to browser login.");
-                match run_login_server(opts) {
-                    Ok(server) => {
-                        print_login_server_start(server.actual_port, &server.auth_url);
-                        match server.block_until_done().await {
-                            Ok(()) => {
-                                eprintln!("{LOGIN_SUCCESS_MESSAGE}");
-                                std::process::exit(0);
-                            }
-                            Err(e) => {
-                                eprintln!("Error logging in: {e}");
-                                std::process::exit(1);
-                            }
-                        }
-                    }
-                    Err(e) => {
-                        eprintln!("Error logging in: {e}");
-                        std::process::exit(1);
-                    }
-                }
-            } else {
-                eprintln!("Error logging in with device code: {e}");
-                std::process::exit(1);
-            }
-        }
-    }
-}
-
 pub async fn run_login_status(cli_config_overrides: CliConfigOverrides) -> ! {
    let config = load_config_or_exit(cli_config_overrides).await;

    match CodexAuth::from_auth_storage(&config.codex_home, config.cli_auth_credentials_store_mode) {
        Ok(Some(auth)) => match auth.mode {
-            AuthMode::ApiKey => match auth.get_token() {
+            AuthMode::ApiKey => match auth.get_token().await {
                Ok(api_key) => {
                    eprintln!("Logged in using an API key - {}", safe_format_key(&api_key));
                    std::process::exit(0);
--- a/codex-rs/cli/src/main.rs
+++ b/codex-rs/cli/src/main.rs
@@ -24,11 +24,9 @@ use codex_execpolicy::ExecPolicyCheckCommand;
 use codex_responses_api_proxy::Args as ResponsesApiProxyArgs;
 use codex_tui::AppExitInfo;
 use codex_tui::Cli as TuiCli;
-use codex_tui::ExitReason;
 use codex_tui::update_action::UpdateAction;
 use codex_tui2 as tui2;
 use owo_colors::OwoColorize;
-use std::io::IsTerminal;
 use std::path::PathBuf;
 use supports_color::Stream;

@@ -46,7 +44,6 @@ use codex_core::features::Feature;
 use codex_core::features::FeatureOverrides;
 use codex_core::features::Features;
 use codex_core::features::is_known_feature_key;
-use codex_core::terminal::TerminalName;
 use codex_utils_absolute_path::AbsolutePathBuf;

 /// Codex CLI
@@ -120,9 +117,6 @@ enum Subcommand {
    /// Resume a previous interactive session (picker by default; use --last to continue the most recent).
    Resume(ResumeCommand),

-    /// Fork a previous interactive session (picker by default; use --last to fork the most recent).
-    Fork(ForkCommand),
-
    /// [EXPERIMENTAL] Browse tasks from Codex Cloud and apply changes locally.
    #[clap(name = "cloud", alias = "cloud-tasks")]
    Cloud(CloudTasksCli),
@@ -165,25 +159,6 @@ struct ResumeCommand {
    config_overrides: TuiCli,
 }

-#[derive(Debug, Parser)]
-struct ForkCommand {
-    /// Conversation/session id (UUID). When provided, forks this session.
-    /// If omitted, use --last to pick the most recent recorded session.
-    #[arg(value_name = "SESSION_ID")]
-    session_id: Option<String>,
-
-    /// Fork the most recent session without showing the picker.
-    #[arg(long = "last", default_value_t = false, conflicts_with = "session_id")]
-    last: bool,
-
-    /// Show all sessions (disables cwd filtering and shows CWD column).
-    #[arg(long = "all", default_value_t = false)]
-    all: bool,
-
-    #[clap(flatten)]
-    config_overrides: TuiCli,
-}
-
 #[derive(Debug, Parser)]
 struct SandboxArgs {
    #[command(subcommand)]
@@ -269,24 +244,6 @@ struct AppServerCommand {
    /// Omit to run the app server; specify a subcommand for tooling.
    #[command(subcommand)]
    subcommand: Option<AppServerSubcommand>,
-
-    /// Controls whether analytics are enabled by default.
-    ///
-    /// Analytics are disabled by default for app-server. Users have to explicitly opt in
-    /// via the `analytics` section in the config.toml file.
-    ///
-    /// However, for first-party use cases like the VSCode IDE extension, we default analytics
-    /// to be enabled by default by setting this flag. Users can still opt out by setting this
-    /// in their config.toml:
-    ///
-    /// ```toml
-    /// [analytics]
-    /// enabled = false
-    /// ```
-    ///
-    /// See https://developers.openai.com/codex/config-advanced/#metrics for more details.
-    #[arg(long = "analytics-default-enabled")]
-    analytics_default_enabled: bool,
 }

 #[derive(Debug, clap::Subcommand)]
@@ -354,14 +311,6 @@ fn format_exit_messages(exit_info: AppExitInfo, color_enabled: bool) -> Vec<Stri

 /// Handle the app exit and print the results. Optionally run the update action.
 fn handle_app_exit(exit_info: AppExitInfo) -> anyhow::Result<()> {
-    match exit_info.exit_reason {
-        ExitReason::Fatal(message) => {
-            eprintln!("ERROR: {message}");
-            std::process::exit(1);
-        }
-        ExitReason::UserRequested => { /* normal exit */ }
-    }
-
    let update_action = exit_info.update_action;
    let color_enabled = supports_color::on(Stream::Stdout).is_some();
    for line in format_exit_messages(exit_info, color_enabled) {
@@ -461,14 +410,22 @@ enum FeaturesSubcommand {
 fn stage_str(stage: codex_core::features::Stage) -> &'static str {
    use codex_core::features::Stage;
    match stage {
-        Stage::Beta => "experimental",
-        Stage::Experimental { .. } => "beta",
+        Stage::Experimental => "experimental",
+        Stage::Beta { .. } => "beta",
        Stage::Stable => "stable",
        Stage::Deprecated => "deprecated",
        Stage::Removed => "removed",
    }
 }

+/// As early as possible in the process lifecycle, apply hardening measures. We
+/// skip this in debug builds to avoid interfering with debugging.
+#[ctor::ctor]
+#[cfg(not(debug_assertions))]
+fn pre_main_hardening() {
+    codex_process_hardening::pre_main_hardening();
+}
+
 fn main() -> anyhow::Result<()> {
    arg0_dispatch_or_else(|codex_linux_sandbox_exe| async move {
        cli_main(codex_linux_sandbox_exe).await?;
@@ -527,7 +484,6 @@ async fn cli_main(codex_linux_sandbox_exe: Option<PathBuf>) -> anyhow::Result<()
                    codex_linux_sandbox_exe,
                    root_config_overrides,
                    codex_core::config_loader::LoaderOverrides::default(),
-                    app_server_cli.analytics_default_enabled,
                )
                .await?;
            }
@@ -558,23 +514,6 @@ async fn cli_main(codex_linux_sandbox_exe: Option<PathBuf>) -> anyhow::Result<()
            let exit_info = run_interactive_tui(interactive, codex_linux_sandbox_exe).await?;
            handle_app_exit(exit_info)?;
        }
-        Some(Subcommand::Fork(ForkCommand {
-            session_id,
-            last,
-            all,
-            config_overrides,
-        })) => {
-            interactive = finalize_fork_interactive(
-                interactive,
-                root_config_overrides.clone(),
-                session_id,
-                last,
-                all,
-                config_overrides,
-            );
-            let exit_info = run_interactive_tui(interactive, codex_linux_sandbox_exe).await?;
-            handle_app_exit(exit_info)?;
-        }
        Some(Subcommand::Login(mut login_cli)) => {
            prepend_config_flags(
                &mut login_cli.config_overrides,
@@ -684,11 +623,11 @@ async fn cli_main(codex_linux_sandbox_exe: Option<PathBuf>) -> anyhow::Result<()
                    .parse_overrides()
                    .map_err(anyhow::Error::msg)?;

-                // Honor `--search` via the canonical web_search mode.
+                // Honor `--search` via the new feature toggle.
                if interactive.web_search {
                    cli_kv_overrides.push((
-                        "web_search".to_string(),
-                        toml::Value::String("live".to_string()),
+                        "features.web_search_request".to_string(),
+                        toml::Value::Boolean(true),
                    ));
                }

@@ -730,32 +669,9 @@ fn prepend_config_flags(
 /// Run the interactive Codex TUI, dispatching to either the legacy implementation or the
 /// experimental TUI v2 shim based on feature flags resolved from config.
 async fn run_interactive_tui(
-    mut interactive: TuiCli,
+    interactive: TuiCli,
    codex_linux_sandbox_exe: Option<PathBuf>,
 ) -> std::io::Result<AppExitInfo> {
-    if let Some(prompt) = interactive.prompt.take() {
-        // Normalize CRLF/CR to LF so CLI-provided text can't leak `\r` into TUI state.
-        interactive.prompt = Some(prompt.replace("\r\n", "\n").replace('\r', "\n"));
-    }
-
-    let terminal_info = codex_core::terminal::terminal_info();
-    if terminal_info.name == TerminalName::Dumb {
-        if !(std::io::stdin().is_terminal() && std::io::stderr().is_terminal()) {
-            return Ok(AppExitInfo::fatal(
-                "TERM is set to \"dumb\". Refusing to start the interactive TUI because no terminal is available for a confirmation prompt (stdin/stderr is not a TTY). Run in a supported terminal or unset TERM.",
-            ));
-        }
-
-        eprintln!(
-            "WARNING: TERM is set to \"dumb\". Codex's interactive TUI may not work in this terminal."
-        );
-        if !confirm("Continue anyway? [y/N]: ")? {
-            return Ok(AppExitInfo::fatal(
-                "Refusing to start the interactive TUI because TERM is set to \"dumb\". Run in a supported terminal or unset TERM.",
-            ));
-        }
-    }
-
    if is_tui2_enabled(&interactive).await? {
        let result = tui2::run_main(interactive.into(), codex_linux_sandbox_exe).await?;
        Ok(result.into())
@@ -764,15 +680,6 @@ async fn run_interactive_tui(
    }
 }

-fn confirm(prompt: &str) -> std::io::Result<bool> {
-    eprintln!("{prompt}");
-
-    let mut input = String::new();
-    std::io::stdin().read_line(&mut input)?;
-    let answer = input.trim();
-    Ok(answer.eq_ignore_ascii_case("y") || answer.eq_ignore_ascii_case("yes"))
-}
-
 /// Returns `Ok(true)` when the resolved configuration enables the `tui2` feature flag.
 ///
 /// This performs a lightweight config load (honoring the same precedence as the lower-level TUI
@@ -817,7 +724,7 @@ fn finalize_resume_interactive(
    interactive.resume_show_all = show_all;

    // Merge resume-scoped flags and overrides with highest precedence.
-    merge_interactive_cli_flags(&mut interactive, resume_cli);
+    merge_resume_cli_flags(&mut interactive, resume_cli);

    // Propagate any root-level config overrides (e.g. `-c key=value`).
    prepend_config_flags(&mut interactive.config_overrides, root_config_overrides);
@@ -825,78 +732,51 @@ fn finalize_resume_interactive(
    interactive
 }

-/// Build the final `TuiCli` for a `codex fork` invocation.
-fn finalize_fork_interactive(
-    mut interactive: TuiCli,
-    root_config_overrides: CliConfigOverrides,
-    session_id: Option<String>,
-    last: bool,
-    show_all: bool,
-    fork_cli: TuiCli,
-) -> TuiCli {
-    // Start with the parsed interactive CLI so fork shares the same
-    // configuration surface area as `codex` without additional flags.
-    let fork_session_id = session_id;
-    interactive.fork_picker = fork_session_id.is_none() && !last;
-    interactive.fork_last = last;
-    interactive.fork_session_id = fork_session_id;
-    interactive.fork_show_all = show_all;
-
-    // Merge fork-scoped flags and overrides with highest precedence.
-    merge_interactive_cli_flags(&mut interactive, fork_cli);
-
-    // Propagate any root-level config overrides (e.g. `-c key=value`).
-    prepend_config_flags(&mut interactive.config_overrides, root_config_overrides);
-
-    interactive
-}
-
-/// Merge flags provided to `codex resume`/`codex fork` so they take precedence over any
-/// root-level flags. Only overrides fields explicitly set on the subcommand-scoped
+/// Merge flags provided to `codex resume` so they take precedence over any
+/// root-level flags. Only overrides fields explicitly set on the resume-scoped
 /// CLI. Also appends `-c key=value` overrides with highest precedence.
-fn merge_interactive_cli_flags(interactive: &mut TuiCli, subcommand_cli: TuiCli) {
-    if let Some(model) = subcommand_cli.model {
+fn merge_resume_cli_flags(interactive: &mut TuiCli, resume_cli: TuiCli) {
+    if let Some(model) = resume_cli.model {
        interactive.model = Some(model);
    }
-    if subcommand_cli.oss {
+    if resume_cli.oss {
        interactive.oss = true;
    }
-    if let Some(profile) = subcommand_cli.config_profile {
+    if let Some(profile) = resume_cli.config_profile {
        interactive.config_profile = Some(profile);
    }
-    if let Some(sandbox) = subcommand_cli.sandbox_mode {
+    if let Some(sandbox) = resume_cli.sandbox_mode {
        interactive.sandbox_mode = Some(sandbox);
    }
-    if let Some(approval) = subcommand_cli.approval_policy {
+    if let Some(approval) = resume_cli.approval_policy {
        interactive.approval_policy = Some(approval);
    }
-    if subcommand_cli.full_auto {
+    if resume_cli.full_auto {
        interactive.full_auto = true;
    }
-    if subcommand_cli.dangerously_bypass_approvals_and_sandbox {
+    if resume_cli.dangerously_bypass_approvals_and_sandbox {
        interactive.dangerously_bypass_approvals_and_sandbox = true;
    }
-    if let Some(cwd) = subcommand_cli.cwd {
+    if let Some(cwd) = resume_cli.cwd {
        interactive.cwd = Some(cwd);
    }
-    if subcommand_cli.web_search {
+    if resume_cli.web_search {
        interactive.web_search = true;
    }
-    if !subcommand_cli.images.is_empty() {
-        interactive.images = subcommand_cli.images;
+    if !resume_cli.images.is_empty() {
+        interactive.images = resume_cli.images;
    }
-    if !subcommand_cli.add_dir.is_empty() {
-        interactive.add_dir.extend(subcommand_cli.add_dir);
+    if !resume_cli.add_dir.is_empty() {
+        interactive.add_dir.extend(resume_cli.add_dir);
    }
-    if let Some(prompt) = subcommand_cli.prompt {
-        // Normalize CRLF/CR to LF so CLI-provided text can't leak `\r` into TUI state.
-        interactive.prompt = Some(prompt.replace("\r\n", "\n").replace('\r', "\n"));
+    if let Some(prompt) = resume_cli.prompt {
+        interactive.prompt = Some(prompt);
    }

    interactive
        .config_overrides
        .raw_overrides
-        .extend(subcommand_cli.config_overrides.raw_overrides);
+        .extend(resume_cli.config_overrides.raw_overrides);
 }

 fn print_completion(cmd: CompletionCommand) {
@@ -913,7 +793,7 @@ mod tests {
    use codex_protocol::ThreadId;
    use pretty_assertions::assert_eq;

-    fn finalize_resume_from_args(args: &[&str]) -> TuiCli {
+    fn finalize_from_args(args: &[&str]) -> TuiCli {
        let cli = MultitoolCli::try_parse_from(args).expect("parse");
        let MultitoolCli {
            interactive,
@@ -942,36 +822,6 @@ mod tests {
        )
    }

-    fn finalize_fork_from_args(args: &[&str]) -> TuiCli {
-        let cli = MultitoolCli::try_parse_from(args).expect("parse");
-        let MultitoolCli {
-            interactive,
-            config_overrides: root_overrides,
-            subcommand,
-            feature_toggles: _,
-        } = cli;
-
-        let Subcommand::Fork(ForkCommand {
-            session_id,
-            last,
-            all,
-            config_overrides: fork_cli,
-        }) = subcommand.expect("fork present")
-        else {
-            unreachable!()
-        };
-
-        finalize_fork_interactive(interactive, root_overrides, session_id, last, all, fork_cli)
-    }
-
-    fn app_server_from_args(args: &[&str]) -> AppServerCommand {
-        let cli = MultitoolCli::try_parse_from(args).expect("parse");
-        let Subcommand::AppServer(app_server) = cli.subcommand.expect("app-server present") else {
-            unreachable!()
-        };
-        app_server
-    }
-
    fn sample_exit_info(conversation: Option<&str>) -> AppExitInfo {
        let token_usage = TokenUsage {
            output_tokens: 2,
@@ -982,7 +832,6 @@ mod tests {
            token_usage,
            thread_id: conversation.map(ThreadId::from_string).map(Result::unwrap),
            update_action: None,
-            exit_reason: ExitReason::UserRequested,
        }
    }

@@ -992,7 +841,6 @@ mod tests {
            token_usage: TokenUsage::default(),
            thread_id: None,
            update_action: None,
-            exit_reason: ExitReason::UserRequested,
        };
        let lines = format_exit_messages(exit_info, false);
        assert!(lines.is_empty());
@@ -1022,8 +870,7 @@ mod tests {

    #[test]
    fn resume_model_flag_applies_when_no_root_flags() {
-        let interactive =
-            finalize_resume_from_args(["codex", "resume", "-m", "gpt-5.1-test"].as_ref());
+        let interactive = finalize_from_args(["codex", "resume", "-m", "gpt-5.1-test"].as_ref());

        assert_eq!(interactive.model.as_deref(), Some("gpt-5.1-test"));
        assert!(interactive.resume_picker);
@@ -1033,7 +880,7 @@ mod tests {

    #[test]
    fn resume_picker_logic_none_and_not_last() {
-        let interactive = finalize_resume_from_args(["codex", "resume"].as_ref());
+        let interactive = finalize_from_args(["codex", "resume"].as_ref());
        assert!(interactive.resume_picker);
        assert!(!interactive.resume_last);
        assert_eq!(interactive.resume_session_id, None);
@@ -1042,7 +889,7 @@ mod tests {

    #[test]
    fn resume_picker_logic_last() {
-        let interactive = finalize_resume_from_args(["codex", "resume", "--last"].as_ref());
+        let interactive = finalize_from_args(["codex", "resume", "--last"].as_ref());
        assert!(!interactive.resume_picker);
        assert!(interactive.resume_last);
        assert_eq!(interactive.resume_session_id, None);
@@ -1051,7 +898,7 @@ mod tests {

    #[test]
    fn resume_picker_logic_with_session_id() {
-        let interactive = finalize_resume_from_args(["codex", "resume", "1234"].as_ref());
+        let interactive = finalize_from_args(["codex", "resume", "1234"].as_ref());
        assert!(!interactive.resume_picker);
        assert!(!interactive.resume_last);
        assert_eq!(interactive.resume_session_id.as_deref(), Some("1234"));
@@ -1060,14 +907,14 @@ mod tests {

    #[test]
    fn resume_all_flag_sets_show_all() {
-        let interactive = finalize_resume_from_args(["codex", "resume", "--all"].as_ref());
+        let interactive = finalize_from_args(["codex", "resume", "--all"].as_ref());
        assert!(interactive.resume_picker);
        assert!(interactive.resume_show_all);
    }

    #[test]
    fn resume_merges_option_flags_and_full_auto() {
-        let interactive = finalize_resume_from_args(
+        let interactive = finalize_from_args(
            [
                "codex",
                "resume",
@@ -1124,7 +971,7 @@ mod tests {

    #[test]
    fn resume_merges_dangerously_bypass_flag() {
-        let interactive = finalize_resume_from_args(
+        let interactive = finalize_from_args(
            [
                "codex",
                "resume",
@@ -1138,53 +985,6 @@ mod tests {
        assert_eq!(interactive.resume_session_id, None);
    }

-    #[test]
-    fn fork_picker_logic_none_and_not_last() {
-        let interactive = finalize_fork_from_args(["codex", "fork"].as_ref());
-        assert!(interactive.fork_picker);
-        assert!(!interactive.fork_last);
-        assert_eq!(interactive.fork_session_id, None);
-        assert!(!interactive.fork_show_all);
-    }
-
-    #[test]
-    fn fork_picker_logic_last() {
-        let interactive = finalize_fork_from_args(["codex", "fork", "--last"].as_ref());
-        assert!(!interactive.fork_picker);
-        assert!(interactive.fork_last);
-        assert_eq!(interactive.fork_session_id, None);
-        assert!(!interactive.fork_show_all);
-    }
-
-    #[test]
-    fn fork_picker_logic_with_session_id() {
-        let interactive = finalize_fork_from_args(["codex", "fork", "1234"].as_ref());
-        assert!(!interactive.fork_picker);
-        assert!(!interactive.fork_last);
-        assert_eq!(interactive.fork_session_id.as_deref(), Some("1234"));
-        assert!(!interactive.fork_show_all);
-    }
-
-    #[test]
-    fn fork_all_flag_sets_show_all() {
-        let interactive = finalize_fork_from_args(["codex", "fork", "--all"].as_ref());
-        assert!(interactive.fork_picker);
-        assert!(interactive.fork_show_all);
-    }
-
-    #[test]
-    fn app_server_analytics_default_disabled_without_flag() {
-        let app_server = app_server_from_args(["codex", "app-server"].as_ref());
-        assert!(!app_server.analytics_default_enabled);
-    }
-
-    #[test]
-    fn app_server_analytics_default_enabled_with_flag() {
-        let app_server =
-            app_server_from_args(["codex", "app-server", "--analytics-default-enabled"].as_ref());
-        assert!(app_server.analytics_default_enabled);
-    }
-
    #[test]
    fn feature_toggles_known_features_generate_overrides() {
        let toggles = FeatureToggles {
--- a/codex-rs/cli/src/mcp_cmd.rs
+++ b/codex-rs/cli/src/mcp_cmd.rs
@@ -241,7 +241,6 @@ async fn run_add(config_overrides: &CliConfigOverrides, add_args: AddArgs) -> Re
    let new_entry = McpServerConfig {
        transport: transport.clone(),
        enabled: true,
-        disabled_reason: None,
        startup_timeout_sec: None,
        tool_timeout_sec: None,
        enabled_tools: None,
@@ -275,7 +274,6 @@ async fn run_add(config_overrides: &CliConfigOverrides, add_args: AddArgs) -> Re
                    http_headers.clone(),
                    env_http_headers.clone(),
                    &Vec::new(),
-                    config.mcp_oauth_callback_port,
                )
                .await?;
                println!("Successfully logged in.");
@@ -333,7 +331,7 @@ async fn run_login(config_overrides: &CliConfigOverrides, login_args: LoginArgs)

    let LoginArgs { name, scopes } = login_args;

-    let Some(server) = config.mcp_servers.get().get(&name) else {
+    let Some(server) = config.mcp_servers.get(&name) else {
        bail!("No MCP server named '{name}' found.");
    };

@@ -354,7 +352,6 @@ async fn run_login(config_overrides: &CliConfigOverrides, login_args: LoginArgs)
        http_headers,
        env_http_headers,
        &scopes,
-        config.mcp_oauth_callback_port,
    )
    .await?;
    println!("Successfully logged in to MCP server '{name}'.");
@@ -373,7 +370,6 @@ async fn run_logout(config_overrides: &CliConfigOverrides, logout_args: LogoutAr

    let server = config
        .mcp_servers
-        .get()
        .get(&name)
        .ok_or_else(|| anyhow!("No MCP server named '{name}' found in configuration."))?;

@@ -449,7 +445,6 @@ async fn run_list(config_overrides: &CliConfigOverrides, list_args: ListArgs) ->
                serde_json::json!({
                    "name": name,
                    "enabled": cfg.enabled,
-                    "disabled_reason": cfg.disabled_reason.as_ref().map(ToString::to_string),
                    "transport": transport,
                    "startup_timeout_sec": cfg
                        .startup_timeout_sec
@@ -494,7 +489,11 @@ async fn run_list(config_overrides: &CliConfigOverrides, list_args: ListArgs) ->
                    .map(|path| path.display().to_string())
                    .filter(|value| !value.is_empty())
                    .unwrap_or_else(|| "-".to_string());
-                let status = format_mcp_status(cfg);
+                let status = if cfg.enabled {
+                    "enabled".to_string()
+                } else {
+                    "disabled".to_string()
+                };
                let auth_status = auth_statuses
                    .get(name.as_str())
                    .map(|entry| entry.auth_status)
@@ -515,7 +514,11 @@ async fn run_list(config_overrides: &CliConfigOverrides, list_args: ListArgs) ->
                bearer_token_env_var,
                ..
            } => {
-                let status = format_mcp_status(cfg);
+                let status = if cfg.enabled {
+                    "enabled".to_string()
+                } else {
+                    "disabled".to_string()
+                };
                let auth_status = auth_statuses
                    .get(name.as_str())
                    .map(|entry| entry.auth_status)
@@ -649,7 +652,7 @@ async fn run_get(config_overrides: &CliConfigOverrides, get_args: GetArgs) -> Re
        .await
        .context("failed to load configuration")?;

-    let Some(server) = config.mcp_servers.get().get(&get_args.name) else {
+    let Some(server) = config.mcp_servers.get(&get_args.name) else {
        bail!("No MCP server named '{name}' found.", name = get_args.name);
    };

@@ -685,7 +688,6 @@ async fn run_get(config_overrides: &CliConfigOverrides, get_args: GetArgs) -> Re
        let output = serde_json::to_string_pretty(&serde_json::json!({
            "name": get_args.name,
            "enabled": server.enabled,
-            "disabled_reason": server.disabled_reason.as_ref().map(ToString::to_string),
            "transport": transport,
            "enabled_tools": server.enabled_tools.clone(),
            "disabled_tools": server.disabled_tools.clone(),
@@ -701,11 +703,7 @@ async fn run_get(config_overrides: &CliConfigOverrides, get_args: GetArgs) -> Re
    }

    if !server.enabled {
-        if let Some(reason) = server.disabled_reason.as_ref() {
-            println!("{name} (disabled: {reason})", name = get_args.name);
-        } else {
-            println!("{name} (disabled)", name = get_args.name);
-        }
+        println!("{} (disabled)", get_args.name);
        return Ok(());
    }

@@ -827,13 +825,3 @@ fn validate_server_name(name: &str) -> Result<()> {
        bail!("invalid server name '{name}' (use letters, numbers, '-', '_')");
    }
 }
-
-fn format_mcp_status(config: &McpServerConfig) -> String {
-    if config.enabled {
-        "enabled".to_string()
-    } else if let Some(reason) = config.disabled_reason.as_ref() {
-        format!("disabled: {reason}")
-    } else {
-        "disabled".to_string()
-    }
-}
--- a/codex-rs/cli/tests/mcp_list.rs
+++ b/codex-rs/cli/tests/mcp_list.rs
@@ -89,7 +89,6 @@ async fn list_and_get_render_expected_output() -> Result<()> {
          {
            "name": "docs",
            "enabled": true,
-            "disabled_reason": null,
            "transport": {
              "type": "stdio",
              "command": "docs-server",
--- a/codex-rs/cloud-tasks-client/BUILD.bazel
+++ b/codex-rs/cloud-tasks-client/BUILD.bazel
@@ -1,10 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "cloud-tasks-client",
-    crate_name = "codex_cloud_tasks_client",
-    crate_features = [
-        "mock",
-        "online",
-    ],
-)
--- a/codex-rs/cloud-tasks-client/src/api.rs
+++ b/codex-rs/cloud-tasks-client/src/api.rs
@@ -94,12 +94,6 @@ pub struct CreatedTask {
    pub id: TaskId,
 }

-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct TaskListPage {
-    pub tasks: Vec<TaskSummary>,
-    pub cursor: Option<String>,
-}
-
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, Default)]
 pub struct DiffSummary {
    pub files_changed: usize,
@@ -132,12 +126,7 @@ impl Default for TaskText {

 #[async_trait::async_trait]
 pub trait CloudBackend: Send + Sync {
-    async fn list_tasks(
-        &self,
-        env: Option<&str>,
-        limit: Option<i64>,
-        cursor: Option<&str>,
-    ) -> Result<TaskListPage>;
+    async fn list_tasks(&self, env: Option<&str>) -> Result<Vec<TaskSummary>>;
    async fn get_task_summary(&self, id: TaskId) -> Result<TaskSummary>;
    async fn get_task_diff(&self, id: TaskId) -> Result<Option<String>>;
    /// Return assistant output messages (no diff) when available.
--- a/codex-rs/cloud-tasks-client/src/http.rs
+++ b/codex-rs/cloud-tasks-client/src/http.rs
@@ -6,7 +6,6 @@ use crate::CloudTaskError;
 use crate::DiffSummary;
 use crate::Result;
 use crate::TaskId;
-use crate::TaskListPage;
 use crate::TaskStatus;
 use crate::TaskSummary;
 use crate::TurnAttempt;
@@ -60,13 +59,8 @@ impl HttpClient {

 #[async_trait::async_trait]
 impl CloudBackend for HttpClient {
-    async fn list_tasks(
-        &self,
-        env: Option<&str>,
-        limit: Option<i64>,
-        cursor: Option<&str>,
-    ) -> Result<TaskListPage> {
-        self.tasks_api().list(env, limit, cursor).await
+    async fn list_tasks(&self, env: Option<&str>) -> Result<Vec<TaskSummary>> {
+        self.tasks_api().list(env).await
    }

    async fn get_task_summary(&self, id: TaskId) -> Result<TaskSummary> {
@@ -138,16 +132,10 @@ mod api {
            }
        }

-        pub(crate) async fn list(
-            &self,
-            env: Option<&str>,
-            limit: Option<i64>,
-            cursor: Option<&str>,
-        ) -> Result<TaskListPage> {
-            let limit_i32 = limit.and_then(|lim| i32::try_from(lim).ok());
+        pub(crate) async fn list(&self, env: Option<&str>) -> Result<Vec<TaskSummary>> {
            let resp = self
                .backend
-                .list_tasks(limit_i32, Some("current"), env, cursor)
+                .list_tasks(Some(20), Some("current"), env)
                .await
                .map_err(|e| CloudTaskError::Http(format!("list_tasks failed: {e}")))?;

@@ -158,19 +146,11 @@ mod api {
                .collect();

            append_error_log(&format!(
-                "http.list_tasks: env={} limit={} cursor_in={} cursor_out={} items={}",
+                "http.list_tasks: env={} items={}",
                env.unwrap_or("<all>"),
-                limit_i32
-                    .map(|v| v.to_string())
-                    .unwrap_or_else(|| "<default>".to_string()),
-                cursor.unwrap_or("<none>"),
-                resp.cursor.as_deref().unwrap_or("<none>"),
                tasks.len()
            ));
-            Ok(TaskListPage {
-                tasks,
-                cursor: resp.cursor,
-            })
+            Ok(tasks)
        }

        pub(crate) async fn summary(&self, id: TaskId) -> Result<TaskSummary> {
--- a/codex-rs/cloud-tasks-client/src/lib.rs
+++ b/codex-rs/cloud-tasks-client/src/lib.rs
@@ -9,7 +9,6 @@ pub use api::CreatedTask;
 pub use api::DiffSummary;
 pub use api::Result;
 pub use api::TaskId;
-pub use api::TaskListPage;
 pub use api::TaskStatus;
 pub use api::TaskSummary;
 pub use api::TaskText;
--- a/codex-rs/cloud-tasks-client/src/mock.rs
+++ b/codex-rs/cloud-tasks-client/src/mock.rs
@@ -16,12 +16,7 @@ pub struct MockClient;

 #[async_trait::async_trait]
 impl CloudBackend for MockClient {
-    async fn list_tasks(
-        &self,
-        _env: Option<&str>,
-        _limit: Option<i64>,
-        _cursor: Option<&str>,
-    ) -> Result<crate::TaskListPage> {
+    async fn list_tasks(&self, _env: Option<&str>) -> Result<Vec<TaskSummary>> {
        // Slightly vary content by env to aid tests that rely on the mock
        let rows = match _env {
            Some("env-A") => vec![("T-2000", "A: First", TaskStatus::Ready)],
@@ -63,14 +58,11 @@ impl CloudBackend for MockClient {
                attempt_total: Some(if id_str == "T-1000" { 2 } else { 1 }),
            });
        }
-        Ok(crate::TaskListPage {
-            tasks: out,
-            cursor: None,
-        })
+        Ok(out)
    }

    async fn get_task_summary(&self, id: TaskId) -> Result<TaskSummary> {
-        let tasks = self.list_tasks(None, None, None).await?.tasks;
+        let tasks = self.list_tasks(None).await?;
        tasks
            .into_iter()
            .find(|t| t.id == id)
--- a/codex-rs/cloud-tasks/BUILD.bazel
+++ b/codex-rs/cloud-tasks/BUILD.bazel
@@ -1,6 +0,0 @@
-load("//:defs.bzl", "codex_rust_crate")
-
-codex_rust_crate(
-    name = "cloud-tasks",
-    crate_name = "codex_cloud_tasks",
-)
--- a/codex-rs/cloud-tasks/src/app.rs
+++ b/codex-rs/cloud-tasks/src/app.rs
@@ -123,13 +123,9 @@ pub async fn load_tasks(
    env: Option<&str>,
 ) -> anyhow::Result<Vec<TaskSummary>> {
    // In later milestones, add a small debounce, spinner, and error display.
-    let tasks = tokio::time::timeout(
-        Duration::from_secs(5),
-        backend.list_tasks(env, Some(20), None),
-    )
-    .await??;
+    let tasks = tokio::time::timeout(Duration::from_secs(5), backend.list_tasks(env)).await??;
    // Hide review-only tasks from the main list.
-    let filtered: Vec<TaskSummary> = tasks.tasks.into_iter().filter(|t| !t.is_review).collect();
+    let filtered: Vec<TaskSummary> = tasks.into_iter().filter(|t| !t.is_review).collect();
    Ok(filtered)
 }

@@ -366,9 +362,7 @@ mod tests {
        async fn list_tasks(
            &self,
            env: Option<&str>,
-            limit: Option<i64>,
-            cursor: Option<&str>,
-        ) -> codex_cloud_tasks_client::Result<codex_cloud_tasks_client::TaskListPage> {
+        ) -> codex_cloud_tasks_client::Result<Vec<TaskSummary>> {
            let key = env.map(str::to_string);
            let titles = self
                .by_env
@@ -389,28 +383,15 @@ mod tests {
                    attempt_total: Some(1),
                });
            }
-            let max = limit.unwrap_or(i64::MAX);
-            let max = max.min(20);
-            let mut limited = Vec::new();
-            for task in out {
-                if (limited.len() as i64) >= max {
-                    break;
-                }
-                limited.push(task);
-            }
-            Ok(codex_cloud_tasks_client::TaskListPage {
-                tasks: limited,
-                cursor: cursor.map(str::to_string),
-            })
+            Ok(out)
        }

        async fn get_task_summary(
            &self,
            id: TaskId,
        ) -> codex_cloud_tasks_client::Result<TaskSummary> {
-            self.list_tasks(None, None, None)
+            self.list_tasks(None)
                .await?
-                .tasks
                .into_iter()
                .find(|t| t.id == id)
                .ok_or_else(|| CloudTaskError::Msg(format!("Task {} not found", id.0)))
--- a/codex-rs/cloud-tasks/src/cli.rs
+++ b/codex-rs/cloud-tasks/src/cli.rs
@@ -18,8 +18,6 @@ pub enum Command {
    Exec(ExecCommand),
    /// Show the status of a Codex Cloud task.
    Status(StatusCommand),
-    /// List Codex Cloud tasks.
-    List(ListCommand),
    /// Apply the diff for a Codex Cloud task locally.
    Apply(ApplyCommand),
    /// Show the unified diff for a Codex Cloud task.
@@ -60,17 +58,6 @@ fn parse_attempts(input: &str) -> Result<usize, String> {
    }
 }

-fn parse_limit(input: &str) -> Result<i64, String> {
-    let value: i64 = input
-        .parse()
-        .map_err(|_| "limit must be an integer between 1 and 20".to_string())?;
-    if (1..=20).contains(&value) {
-        Ok(value)
-    } else {
-        Err("limit must be between 1 and 20".to_string())
-    }
-}
-
 #[derive(Debug, Args)]
 pub struct StatusCommand {
    /// Codex Cloud task identifier to inspect.
@@ -78,25 +65,6 @@ pub struct StatusCommand {
    pub task_id: String,
 }

-#[derive(Debug, Args)]
-pub struct ListCommand {
-    /// Filter tasks by environment identifier.
-    #[arg(long = "env", value_name = "ENV_ID")]
-    pub environment: Option<String>,
-
-    /// Maximum number of tasks to return (1-20).
-    #[arg(long = "limit", default_value_t = 20, value_parser = parse_limit, value_name = "N")]
-    pub limit: i64,
-
-    /// Pagination cursor returned by a previous call.
-    #[arg(long = "cursor", value_name = "CURSOR")]
-    pub cursor: Option<String>,
-
-    /// Emit JSON instead of plain text.
-    #[arg(long = "json", default_value_t = false)]
-    pub json: bool,
-}
-
 #[derive(Debug, Args)]
 pub struct ApplyCommand {
    /// Codex Cloud task identifier to apply.
--- a/codex-rs/cloud-tasks/src/lib.rs
+++ b/codex-rs/cloud-tasks/src/lib.rs
@@ -10,6 +10,7 @@ pub use cli::Cli;
 use anyhow::anyhow;
 use chrono::Utc;
 use codex_cloud_tasks_client::TaskStatus;
+use codex_login::AuthManager;
 use owo_colors::OwoColorize;
 use owo_colors::Stream;
 use std::cmp::Ordering;
@@ -64,11 +65,7 @@ async fn init_backend(user_agent_suffix: &str) -> anyhow::Result<BackendContext>
    append_error_log(format!("startup: base_url={base_url} path_style={style}"));

    let auth_manager = util::load_auth_manager().await;
-    let auth = match auth_manager.as_ref() {
-        Some(manager) => manager.auth().await,
-        None => None,
-    };
-    let auth = match auth {
+    let auth = match auth_manager.as_ref().and_then(AuthManager::auth) {
        Some(auth) => auth,
        None => {
            eprintln!(
@@ -82,7 +79,7 @@ async fn init_backend(user_agent_suffix: &str) -> anyhow::Result<BackendContext>
        append_error_log(format!("auth: mode=ChatGPT account_id={acc}"));
    }

-    let token = match auth.get_token() {
+    let token = match auth.get_token().await {
        Ok(t) if !t.is_empty() => t,
        _ => {
            eprintln!(
@@ -393,10 +390,11 @@ fn summary_line(summary: &codex_cloud_tasks_client::DiffSummary, colorize: bool)
        let bullet = "•"
            .if_supports_color(Stream::Stdout, |t| t.dimmed())
            .to_string();
-        let file_label = format!("file{}", if files == 1 { "" } else { "s" })
+        let file_label = "file"
            .if_supports_color(Stream::Stdout, |t| t.dimmed())
            .to_string();
-        format!("{adds_str}/{dels_str}  {bullet}  {files} {file_label}")
+        let plural = if files == 1 { "" } else { "s" };
+        format!("{adds_str}/{dels_str}  {bullet}  {files} {file_label}{plural}")
    } else {
        format!(
            "+{adds}/-{dels} • {files} file{}",
@@ -472,25 +470,6 @@ fn format_task_status_lines(
    lines
 }

-fn format_task_list_lines(
-    tasks: &[codex_cloud_tasks_client::TaskSummary],
-    base_url: &str,
-    now: chrono::DateTime<Utc>,
-    colorize: bool,
-) -> Vec<String> {
-    let mut lines = Vec::new();
-    for (idx, task) in tasks.iter().enumerate() {
-        lines.push(util::task_url(base_url, &task.id.0));
-        for line in format_task_status_lines(task, now, colorize) {
-            lines.push(format!("  {line}"));
-        }
-        if idx + 1 < tasks.len() {
-            lines.push(String::new());
-        }
-    }
-    lines
-}
-
 async fn run_status_command(args: crate::cli::StatusCommand) -> anyhow::Result<()> {
    let ctx = init_backend("codex_cloud_tasks_status").await?;
    let task_id = parse_task_id(&args.task_id)?;
@@ -507,73 +486,6 @@ async fn run_status_command(args: crate::cli::StatusCommand) -> anyhow::Result<(
    Ok(())
 }

-async fn run_list_command(args: crate::cli::ListCommand) -> anyhow::Result<()> {
-    let ctx = init_backend("codex_cloud_tasks_list").await?;
-    let env_filter = if let Some(env) = args.environment {
-        Some(resolve_environment_id(&ctx, &env).await?)
-    } else {
-        None
-    };
-    let page = codex_cloud_tasks_client::CloudBackend::list_tasks(
-        &*ctx.backend,
-        env_filter.as_deref(),
-        Some(args.limit),
-        args.cursor.as_deref(),
-    )
-    .await?;
-    if args.json {
-        let tasks: Vec<_> = page
-            .tasks
-            .iter()
-            .map(|task| {
-                serde_json::json!({
-                    "id": task.id.0,
-                    "url": util::task_url(&ctx.base_url, &task.id.0),
-                    "title": task.title,
-                    "status": task.status,
-                    "updated_at": task.updated_at,
-                    "environment_id": task.environment_id,
-                    "environment_label": task.environment_label,
-                    "summary": {
-                        "files_changed": task.summary.files_changed,
-                        "lines_added": task.summary.lines_added,
-                        "lines_removed": task.summary.lines_removed,
-                    },
-                    "is_review": task.is_review,
-                    "attempt_total": task.attempt_total,
-                })
-            })
-            .collect();
-        let payload = serde_json::json!({
-            "tasks": tasks,
-            "cursor": page.cursor,
-        });
-        println!("{}", serde_json::to_string_pretty(&payload)?);
-        return Ok(());
-    }
-    if page.tasks.is_empty() {
-        println!("No tasks found.");
-        return Ok(());
-    }
-    let now = Utc::now();
-    let colorize = supports_color::on(SupportStream::Stdout).is_some();
-    for line in format_task_list_lines(&page.tasks, &ctx.base_url, now, colorize) {
-        println!("{line}");
-    }
-    if let Some(cursor) = page.cursor {
-        let command = format!("codex cloud list --cursor='{cursor}'");
-        if colorize {
-            println!(
-                "\nTo fetch the next page, run {}",
-                command.if_supports_color(Stream::Stdout, |text| text.cyan())
-            );
-        } else {
-            println!("\nTo fetch the next page, run {command}");
-        }
-    }
-    Ok(())
-}
-
 async fn run_diff_command(args: crate::cli::DiffCommand) -> anyhow::Result<()> {
    let ctx = init_backend("codex_cloud_tasks_diff").await?;
    let task_id = parse_task_id(&args.task_id)?;
@@ -734,7 +646,6 @@ pub async fn run_main(cli: Cli, _codex_linux_sandbox_exe: Option<PathBuf>) -> an
        return match command {
            crate::cli::Command::Exec(args) => run_exec_command(args).await,
            crate::cli::Command::Status(args) => run_status_command(args).await,
-            crate::cli::Command::List(args) => run_list_command(args).await,
            crate::cli::Command::Apply(args) => run_apply_command(args).await,
            crate::cli::Command::Diff(args) => run_diff_command(args).await,
        };
@@ -2267,54 +2178,6 @@ mod tests {
        );
    }

-    #[test]
-    fn format_task_list_lines_formats_urls() {
-        let now = Utc::now();
-        let tasks = vec![
-            TaskSummary {
-                id: TaskId("task_1".to_string()),
-                title: "Example task".to_string(),
-                status: TaskStatus::Ready,
-                updated_at: now,
-                environment_id: Some("env-1".to_string()),
-                environment_label: Some("Env".to_string()),
-                summary: DiffSummary {
-                    files_changed: 3,
-                    lines_added: 5,
-                    lines_removed: 2,
-                },
-                is_review: false,
-                attempt_total: None,
-            },
-            TaskSummary {
-                id: TaskId("task_2".to_string()),
-                title: "No diff task".to_string(),
-                status: TaskStatus::Pending,
-                updated_at: now,
-                environment_id: Some("env-2".to_string()),
-                environment_label: None,
-                summary: DiffSummary::default(),
-                is_review: false,
-                attempt_total: Some(1),
-            },
-        ];
-        let lines = format_task_list_lines(&tasks, "https://chatgpt.com/backend-api", now, false);
-        assert_eq!(
-            lines,
-            vec![
-                "https://chatgpt.com/codex/tasks/task_1".to_string(),
-                "  [READY] Example task".to_string(),
-                "  Env  •  0s ago".to_string(),
-                "  +5/-2 • 3 files".to_string(),
-                String::new(),
-                "https://chatgpt.com/codex/tasks/task_2".to_string(),
-                "  [PENDING] No diff task".to_string(),
-                "  env-2  •  0s ago".to_string(),
-                "  no diff".to_string(),
-            ]
-        );
-    }
-
    #[tokio::test]
    async fn collect_attempt_diffs_includes_sibling_attempts() {
        let backend = MockClient;
--- a/Show More
+++ b/Show More