docs: update devbox run helper for main

This seems to be required to fix bazel builds on an applied devbox

## Summary
- add the Bazel `xz` module
- wire `lzma-sys` directly to `@xz//:lzma` and disable its build script
- refresh `MODULE.bazel.lock`

## Validation
- `just bazel-lock-update`
- `just bazel-lock-check`
- `bazel run //codex-rs/cli:codex --run_under="cd $PWD &&" -- --version`
- `just bazel-codex --version`

Co-authored-by: Codex <noreply@openai.com>

MODULE.bazel

@@ -234,14 +234,18 @@ crate.annotation(
 
 inject_repo(crate, "zlib")
 
-# TODO(zbarsky): Enable annotation after fixing windows arm64 builds.
+bazel_dep(name = "xz", version = "5.4.5.bcr.8")
+
 crate.annotation(
     crate = "lzma-sys",
-    gen_build_script = "on",
+    gen_build_script = "off",
+    deps = ["@xz//:lzma"],
 )
 
 bazel_dep(name = "openssl", version = "3.5.4.bcr.0")
 
+inject_repo(crate, "xz")
+
 crate.annotation(
     build_script_data = [
         "@openssl//:gen_dir",

MODULE.bazel.lock

@@ -228,6 +228,8 @@
     "https://bcr.bazel.build/modules/upb/0.0.0-20220923-a547704/MODULE.bazel": "7298990c00040a0e2f121f6c32544bab27d4452f80d9ce51349b1a28f3005c43",
     "https://bcr.bazel.build/modules/with_cfg.bzl/0.12.0/MODULE.bazel": "b573395fe63aef4299ba095173e2f62ccfee5ad9bbf7acaa95dba73af9fc2b38",
     "https://bcr.bazel.build/modules/with_cfg.bzl/0.12.0/source.json": "3f3fbaeafecaf629877ad152a2c9def21f8d330d91aa94c5dc75bbb98c10b8b8",
+    "https://bcr.bazel.build/modules/xz/5.4.5.bcr.8/MODULE.bazel": "e48a69bd54053c2ec5fffc2a29fb70122afd3e83ab6c07068f63bc6553fa57cc",
+    "https://bcr.bazel.build/modules/xz/5.4.5.bcr.8/source.json": "bd7e928ccd63505b44f4784f7bbf12cc11f9ff23bf3ca12ff2c91cd74846099e",
     "https://bcr.bazel.build/modules/zlib/1.2.11/MODULE.bazel": "07b389abc85fdbca459b69e2ec656ae5622873af3f845e1c9d80fe179f3effa0",
     "https://bcr.bazel.build/modules/zlib/1.3.1.bcr.5/MODULE.bazel": "eec517b5bbe5492629466e11dae908d043364302283de25581e3eb944326c4ca",
     "https://bcr.bazel.build/modules/zlib/1.3.1.bcr.8/MODULE.bazel": "772c674bb78a0342b8caf32ab5c25085c493ca4ff08398208dcbe4375fe9f776",

codex-rs/app-server/README.md

@@ -132,7 +132,7 @@ Example with notification opt-out:
 
 ## API Overview
 
-- `thread/start` — create a new thread; emits `thread/started` (including the current `thread.status`) and auto-subscribes you to turn/item events for that thread.
+- `thread/start` — create a new thread; emits `thread/started` (including the current `thread.status`) and auto-subscribes you to turn/item events for that thread. When the request includes a `cwd` and the resolved sandbox is `workspace-write` or full access, app-server also marks that project as trusted in the user `config.toml`.
 - `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; if the source thread is currently mid-turn, the fork records the same interruption marker as `turn/interrupt` instead of inheriting an unmarked partial turn suffix. The returned `thread.forkedFromId` points at the source thread when known. Accepts `ephemeral: true` for an in-memory temporary fork, emits `thread/started` (including the current `thread.status`), 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`, `sourceKinds`, `archived`, `cwd`, and `searchTerm` filters. Each returned `thread` includes `status` (`ThreadStatus`), defaulting to `notLoaded` when the thread is not currently loaded.

codex-rs/app-server/src/codex_message_processor.rs

@@ -235,6 +235,7 @@ use codex_features::Feature;
 use codex_features::Stage;
 use codex_feedback::CodexFeedback;
 use codex_git_utils::git_diff_to_remote;
+use codex_git_utils::resolve_root_git_project_for_trust;
 use codex_login::AuthManager;
 use codex_login::AuthMode as CoreAuthMode;
 use codex_login::CLIENT_ID;
@@ -255,6 +256,7 @@ use codex_protocol::ThreadId;
 use codex_protocol::config_types::CollaborationMode;
 use codex_protocol::config_types::ForcedLoginMethod;
 use codex_protocol::config_types::Personality;
+use codex_protocol::config_types::TrustLevel;
 use codex_protocol::config_types::WindowsSandboxLevel;
 use codex_protocol::dynamic_tools::DynamicToolSpec as CoreDynamicToolSpec;
 use codex_protocol::items::TurnItem;
@@ -2190,10 +2192,11 @@ impl CodexMessageProcessor {
         experimental_raw_events: bool,
         request_trace: Option<W3cTraceContext>,
     ) {
-        let config = match derive_config_from_params(
+        let requested_cwd = typesafe_overrides.cwd.clone();
+        let mut config = match derive_config_from_params(
             &cli_overrides,
-            config_overrides,
-            typesafe_overrides,
+            config_overrides.clone(),
+            typesafe_overrides.clone(),
             &cloud_requirements,
             &listener_task_context.codex_home,
             &runtime_feature_enablement,
@@ -2211,6 +2214,56 @@ impl CodexMessageProcessor {
             }
         };
 
+        if requested_cwd.is_some()
+            && !config.active_project.is_trusted()
+            && matches!(
+                config.permissions.sandbox_policy.get(),
+                codex_protocol::protocol::SandboxPolicy::WorkspaceWrite { .. }
+                    | codex_protocol::protocol::SandboxPolicy::DangerFullAccess
+                    | codex_protocol::protocol::SandboxPolicy::ExternalSandbox { .. }
+            )
+        {
+            let trust_target = resolve_root_git_project_for_trust(config.cwd.as_path())
+                .unwrap_or_else(|| config.cwd.to_path_buf());
+            if let Err(err) = codex_core::config::set_project_trust_level(
+                &listener_task_context.codex_home,
+                trust_target.as_path(),
+                TrustLevel::Trusted,
+            ) {
+                let error = JSONRPCErrorError {
+                    code: INTERNAL_ERROR_CODE,
+                    message: format!("failed to persist trusted project state: {err}"),
+                    data: None,
+                };
+                listener_task_context
+                    .outgoing
+                    .send_error(request_id, error)
+                    .await;
+                return;
+            }
+
+            config = match derive_config_from_params(
+                &cli_overrides,
+                config_overrides,
+                typesafe_overrides,
+                &cloud_requirements,
+                &listener_task_context.codex_home,
+                &runtime_feature_enablement,
+            )
+            .await
+            {
+                Ok(config) => config,
+                Err(err) => {
+                    let error = config_load_error(&err);
+                    listener_task_context
+                        .outgoing
+                        .send_error(request_id, error)
+                        .await;
+                    return;
+                }
+            };
+        }
+
         let dynamic_tools = dynamic_tools.unwrap_or_default();
         let core_dynamic_tools = if dynamic_tools.is_empty() {
             Vec::new()

codex-rs/app-server/tests/suite/v2/thread_shell_command.rs

@@ -26,6 +26,7 @@ use codex_app_server_protocol::TurnCompletedNotification;
 use codex_app_server_protocol::TurnStartParams;
 use codex_app_server_protocol::TurnStartResponse;
 use codex_app_server_protocol::UserInput as V2UserInput;
+use codex_core::shell::default_user_shell;
 use codex_features::FEATURES;
 use codex_features::Feature;
 use pretty_assertions::assert_eq;
@@ -67,11 +68,12 @@ async fn thread_shell_command_runs_as_standalone_turn_and_persists_history() ->
     )
     .await??;
     let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(start_resp)?;
+    let (shell_command, expected_output) = current_shell_output_command("hello from bang")?;
 
     let shell_id = mcp
         .send_thread_shell_command_request(ThreadShellCommandParams {
             thread_id: thread.id.clone(),
-            command: "printf 'hello from bang\\n'".to_string(),
+            command: shell_command,
         })
         .await?;
     let shell_resp: JSONRPCResponse = timeout(
@@ -93,7 +95,7 @@ async fn thread_shell_command_runs_as_standalone_turn_and_persists_history() ->
     assert_eq!(status, &CommandExecutionStatus::InProgress);
 
     let delta = wait_for_command_execution_output_delta(&mut mcp, &command_id).await?;
-    assert_eq!(delta.delta, "hello from bang\n");
+    assert_eq!(delta.delta, expected_output);
 
     let completed = wait_for_command_execution_completed(&mut mcp, Some(&command_id)).await?;
     let ThreadItem::CommandExecution {
@@ -110,7 +112,7 @@ async fn thread_shell_command_runs_as_standalone_turn_and_persists_history() ->
     assert_eq!(id, &command_id);
     assert_eq!(source, &CommandExecutionSource::UserShell);
     assert_eq!(status, &CommandExecutionStatus::Completed);
-    assert_eq!(aggregated_output.as_deref(), Some("hello from bang\n"));
+    assert_eq!(aggregated_output.as_deref(), Some(expected_output.as_str()));
     assert_eq!(*exit_code, Some(0));
 
     timeout(
@@ -147,7 +149,7 @@ async fn thread_shell_command_runs_as_standalone_turn_and_persists_history() ->
     };
     assert_eq!(source, &CommandExecutionSource::UserShell);
     assert_eq!(status, &CommandExecutionStatus::Completed);
-    assert_eq!(aggregated_output.as_deref(), Some("hello from bang\n"));
+    assert_eq!(aggregated_output.as_deref(), Some(expected_output.as_str()));
 
     Ok(())
 }
@@ -196,6 +198,7 @@ async fn thread_shell_command_uses_existing_active_turn() -> Result<()> {
     )
     .await??;
     let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(start_resp)?;
+    let (shell_command, expected_output) = current_shell_output_command("active turn bang")?;
 
     let turn_id = mcp
         .send_turn_start_request(TurnStartParams {
@@ -240,7 +243,7 @@ async fn thread_shell_command_uses_existing_active_turn() -> Result<()> {
     let shell_id = mcp
         .send_thread_shell_command_request(ThreadShellCommandParams {
             thread_id: thread.id.clone(),
-            command: "printf 'active turn bang\\n'".to_string(),
+            command: shell_command,
         })
         .await?;
     let shell_resp: JSONRPCResponse = timeout(
@@ -269,7 +272,7 @@ async fn thread_shell_command_uses_existing_active_turn() -> Result<()> {
         unreachable!("helper returns command execution item");
     };
     assert_eq!(source, &CommandExecutionSource::UserShell);
-    assert_eq!(aggregated_output.as_deref(), Some("active turn bang\n"));
+    assert_eq!(aggregated_output.as_deref(), Some(expected_output.as_str()));
 
     mcp.send_response(
         request_id,
@@ -309,7 +312,7 @@ async fn thread_shell_command_uses_existing_active_turn() -> Result<()> {
                     source: CommandExecutionSource::UserShell,
                     aggregated_output,
                     ..
-                } if aggregated_output.as_deref() == Some("active turn bang\n")
+                } if aggregated_output.as_deref() == Some(expected_output.as_str())
             )
         }),
         "expected active-turn shell command to be persisted on the existing turn"
@@ -318,6 +321,24 @@ async fn thread_shell_command_uses_existing_active_turn() -> Result<()> {
     Ok(())
 }
 
+fn current_shell_output_command(text: &str) -> Result<(String, String)> {
+    let command_and_output = match default_user_shell().name() {
+        "powershell" => {
+            let escaped_text = text.replace('\'', "''");
+            (
+                format!("Write-Output '{escaped_text}'"),
+                format!("{text}\r\n"),
+            )
+        }
+        "cmd" => (format!("echo {text}"), format!("{text}\r\n")),
+        _ => {
+            let quoted_text = shlex::try_quote(text)?;
+            (format!("printf '%s\\n' {quoted_text}"), format!("{text}\n"))
+        }
+    };
+    Ok(command_and_output)
+}
+
 async fn wait_for_command_execution_started(
     mcp: &mut McpProcess,
     expected_id: Option<&str>,

codex-rs/app-server/tests/suite/v2/thread_start.rs

@@ -4,12 +4,14 @@ use app_test_support::McpProcess;
 use app_test_support::create_mock_responses_server_repeating_assistant;
 use app_test_support::to_response;
 use app_test_support::write_chatgpt_auth;
+use codex_app_server_protocol::AskForApproval;
 use codex_app_server_protocol::JSONRPCError;
 use codex_app_server_protocol::JSONRPCMessage;
 use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::McpServerStartupState;
 use codex_app_server_protocol::McpServerStatusUpdatedNotification;
 use codex_app_server_protocol::RequestId;
+use codex_app_server_protocol::SandboxMode;
 use codex_app_server_protocol::ServerNotification;
 use codex_app_server_protocol::ThreadStartParams;
 use codex_app_server_protocol::ThreadStartResponse;
@@ -17,6 +19,7 @@ use codex_app_server_protocol::ThreadStartedNotification;
 use codex_app_server_protocol::ThreadStatus;
 use codex_app_server_protocol::ThreadStatusChangedNotification;
 use codex_core::config::set_project_trust_level;
+use codex_git_utils::resolve_root_git_project_for_trust;
 use codex_login::AuthCredentialsStoreMode;
 use codex_login::REFRESH_TOKEN_URL_OVERRIDE_ENV_VAR;
 use codex_protocol::config_types::ServiceTier;
@@ -48,7 +51,7 @@ async fn thread_start_creates_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())?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
 
     // Start server and initialize.
     let mut mcp = McpProcess::new(codex_home.path()).await?;
@@ -231,7 +234,7 @@ async fn thread_start_respects_project_config_from_cwd() -> Result<()> {
     let server = create_mock_responses_server_repeating_assistant("Done").await;
 
     let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
 
     let workspace = TempDir::new()?;
     let project_config_dir = workspace.path().join(".codex");
@@ -272,7 +275,7 @@ async fn thread_start_accepts_flex_service_tier() -> Result<()> {
     let server = create_mock_responses_server_repeating_assistant("Done").await;
 
     let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
 
     let mut mcp = McpProcess::new(codex_home.path()).await?;
     timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
@@ -300,7 +303,7 @@ async fn thread_start_accepts_metrics_service_name() -> Result<()> {
     let server = create_mock_responses_server_repeating_assistant("Done").await;
 
     let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
 
     let mut mcp = McpProcess::new(codex_home.path()).await?;
     timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
@@ -327,7 +330,7 @@ async fn thread_start_accepts_metrics_service_name() -> Result<()> {
 async fn thread_start_ephemeral_remains_pathless() -> Result<()> {
     let server = create_mock_responses_server_repeating_assistant("Done").await;
     let codex_home = TempDir::new()?;
-    create_config_toml(codex_home.path(), &server.uri())?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
 
     let mut mcp = McpProcess::new(codex_home.path()).await?;
     timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
@@ -584,16 +587,210 @@ async fn thread_start_surfaces_cloud_requirements_load_errors() -> Result<()> {
     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<()> {
+#[tokio::test]
+async fn thread_start_with_elevated_sandbox_trusts_project_and_followup_loads_project_config()
+-> Result<()> {
+    let server = create_mock_responses_server_repeating_assistant("Done").await;
+
+    let codex_home = TempDir::new()?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
+
+    let workspace = TempDir::new()?;
+    let project_config_dir = workspace.path().join(".codex");
+    std::fs::create_dir_all(&project_config_dir)?;
+    std::fs::write(
+        project_config_dir.join("config.toml"),
+        r#"
+model_reasoning_effort = "high"
+"#,
+    )?;
+
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
+
+    let first_request = mcp
+        .send_thread_start_request(ThreadStartParams {
+            cwd: Some(workspace.path().display().to_string()),
+            sandbox: Some(SandboxMode::WorkspaceWrite),
+            ..Default::default()
+        })
+        .await?;
+    timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(first_request)),
+    )
+    .await??;
+
+    let second_request = mcp
+        .send_thread_start_request(ThreadStartParams {
+            cwd: Some(workspace.path().display().to_string()),
+            ..Default::default()
+        })
+        .await?;
+    let second_response: JSONRPCResponse = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(second_request)),
+    )
+    .await??;
+    let ThreadStartResponse {
+        approval_policy,
+        reasoning_effort,
+        ..
+    } = to_response::<ThreadStartResponse>(second_response)?;
+
+    assert_eq!(approval_policy, AskForApproval::OnRequest);
+    assert_eq!(reasoning_effort, Some(ReasoningEffort::High));
+
+    let config_toml = std::fs::read_to_string(codex_home.path().join("config.toml"))?;
+    let trusted_root = resolve_root_git_project_for_trust(workspace.path())
+        .unwrap_or_else(|| workspace.path().to_path_buf());
+    assert!(config_toml.contains(&trusted_root.display().to_string()));
+    assert!(config_toml.contains("trust_level = \"trusted\""));
+
+    Ok(())
+}
+
+#[tokio::test]
+async fn thread_start_with_nested_git_cwd_trusts_repo_root() -> Result<()> {
+    let server = create_mock_responses_server_repeating_assistant("Done").await;
+
+    let codex_home = TempDir::new()?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
+
+    let repo_root = TempDir::new()?;
+    std::fs::create_dir(repo_root.path().join(".git"))?;
+    let nested = repo_root.path().join("nested/project");
+    std::fs::create_dir_all(&nested)?;
+
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
+
+    let request_id = mcp
+        .send_thread_start_request(ThreadStartParams {
+            cwd: Some(nested.display().to_string()),
+            sandbox: Some(SandboxMode::WorkspaceWrite),
+            ..Default::default()
+        })
+        .await?;
+    timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(request_id)),
+    )
+    .await??;
+
+    let config_toml = std::fs::read_to_string(codex_home.path().join("config.toml"))?;
+    let trusted_root =
+        resolve_root_git_project_for_trust(&nested).expect("git root should resolve");
+    assert!(config_toml.contains(&trusted_root.display().to_string()));
+    assert!(!config_toml.contains(&nested.display().to_string()));
+
+    Ok(())
+}
+
+#[tokio::test]
+async fn thread_start_with_read_only_sandbox_does_not_persist_project_trust() -> Result<()> {
+    let server = create_mock_responses_server_repeating_assistant("Done").await;
+
+    let codex_home = TempDir::new()?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
+
+    let workspace = TempDir::new()?;
+
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
+
+    let request_id = mcp
+        .send_thread_start_request(ThreadStartParams {
+            cwd: Some(workspace.path().display().to_string()),
+            ..Default::default()
+        })
+        .await?;
+    timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(request_id)),
+    )
+    .await??;
+
+    let config_toml = std::fs::read_to_string(codex_home.path().join("config.toml"))?;
+    assert!(!config_toml.contains("trust_level = \"trusted\""));
+    assert!(!config_toml.contains(&workspace.path().display().to_string()));
+
+    Ok(())
+}
+
+#[tokio::test]
+async fn thread_start_skips_trust_write_when_project_is_already_trusted() -> Result<()> {
+    let server = create_mock_responses_server_repeating_assistant("Done").await;
+
+    let codex_home = TempDir::new()?;
+    create_config_toml_without_approval_policy(codex_home.path(), &server.uri())?;
+
+    let workspace = TempDir::new()?;
+    let project_config_dir = workspace.path().join(".codex");
+    std::fs::create_dir_all(&project_config_dir)?;
+    std::fs::write(
+        project_config_dir.join("config.toml"),
+        r#"
+model_reasoning_effort = "high"
+"#,
+    )?;
+    set_project_trust_level(codex_home.path(), workspace.path(), TrustLevel::Trusted)?;
+    let config_before = std::fs::read_to_string(codex_home.path().join("config.toml"))?;
+
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
+
+    let request_id = mcp
+        .send_thread_start_request(ThreadStartParams {
+            cwd: Some(workspace.path().display().to_string()),
+            sandbox: Some(SandboxMode::WorkspaceWrite),
+            ..Default::default()
+        })
+        .await?;
+    let response: JSONRPCResponse = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(request_id)),
+    )
+    .await??;
+    let ThreadStartResponse {
+        approval_policy,
+        reasoning_effort,
+        ..
+    } = to_response::<ThreadStartResponse>(response)?;
+
+    assert_eq!(approval_policy, AskForApproval::OnRequest);
+    assert_eq!(reasoning_effort, Some(ReasoningEffort::High));
+
+    let config_after = std::fs::read_to_string(codex_home.path().join("config.toml"))?;
+    assert_eq!(config_after, config_before);
+
+    Ok(())
+}
+
+fn create_config_toml_without_approval_policy(
+    codex_home: &Path,
+    server_uri: &str,
+) -> std::io::Result<()> {
+    create_config_toml_with_optional_approval_policy(
+        codex_home, server_uri, /*approval_policy*/ None,
+    )
+}
+
+fn create_config_toml_with_optional_approval_policy(
+    codex_home: &Path,
+    server_uri: &str,
+    approval_policy: Option<&str>,
+) -> std::io::Result<()> {
     let config_toml = codex_home.join("config.toml");
+    let approval_policy = approval_policy
+        .map(|policy| format!("approval_policy = \"{policy}\"\n"))
+        .unwrap_or_default();
     std::fs::write(
         config_toml,
         format!(
             r#"
 model = "mock-model"
-approval_policy = "never"
-sandbox_mode = "read-only"
+{approval_policy}sandbox_mode = "read-only"
 
 model_provider = "mock_provider"
 

codex-rs/app-server/tests/suite/v2/turn_start.rs

@@ -2523,6 +2523,67 @@ async fn command_execution_notifications_include_process_id() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn turn_start_with_elevated_override_does_not_persist_project_trust() -> 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",
+        &BTreeMap::from([(Feature::Personality, true)]),
+    )?;
+
+    let workspace = TempDir::new()?;
+
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
+
+    let thread_request = mcp
+        .send_thread_start_request(ThreadStartParams {
+            cwd: Some(workspace.path().display().to_string()),
+            ..Default::default()
+        })
+        .await?;
+    let thread_response: JSONRPCResponse = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(thread_request)),
+    )
+    .await??;
+    let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(thread_response)?;
+
+    let turn_request = mcp
+        .send_turn_start_request(TurnStartParams {
+            thread_id: thread.id,
+            cwd: Some(workspace.path().to_path_buf()),
+            sandbox_policy: Some(codex_app_server_protocol::SandboxPolicy::DangerFullAccess),
+            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_request)),
+    )
+    .await??;
+    timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_notification_message("turn/completed"),
+    )
+    .await??;
+
+    let config_toml = std::fs::read_to_string(codex_home.path().join("config.toml"))?;
+    assert!(!config_toml.contains("trust_level = \"trusted\""));
+    assert!(!config_toml.contains(&workspace.path().display().to_string()));
+
+    Ok(())
+}
+
 // Helper to create a config.toml pointing at the mock model server.
 fn create_config_toml(
     codex_home: &Path,

codex-rs/core/src/codex_tests.rs

@@ -3119,7 +3119,6 @@ async fn spawn_task_turn_span_inherits_dispatch_trace_context() {
         captured_trace: Arc<std::sync::Mutex<Option<W3cTraceContext>>>,
     }
 
-    #[async_trait::async_trait]
     impl SessionTask for TraceCaptureTask {
         fn kind(&self) -> TaskKind {
             TaskKind::Regular
@@ -4375,7 +4374,6 @@ struct NeverEndingTask {
     listen_to_cancellation_token: bool,
 }
 
-#[async_trait::async_trait]
 impl SessionTask for NeverEndingTask {
     fn kind(&self) -> TaskKind {
         self.kind

codex-rs/core/src/models_manager/manager_tests.rs

@@ -112,10 +112,12 @@ impl ProviderAuthScript {
     fn new(tokens: &[&str]) -> std::io::Result<Self> {
         let tempdir = tempfile::tempdir()?;
         let tokens_file = tempdir.path().join("tokens.txt");
+        // `cmd.exe`'s `set /p` treats LF-only input as one line, so use CRLF on Windows.
+        let token_line_ending = if cfg!(windows) { "\r\n" } else { "\n" };
         let mut token_file_contents = String::new();
         for token in tokens {
             token_file_contents.push_str(token);
-            token_file_contents.push('\n');
+            token_file_contents.push_str(token_line_ending);
         }
         std::fs::write(&tokens_file, token_file_contents)?;
 
@@ -142,23 +144,28 @@ mv tokens.next tokens.txt
 
         #[cfg(windows)]
         let (command, args) = {
-            let script_path = tempdir.path().join("print-token.ps1");
+            let script_path = tempdir.path().join("print-token.cmd");
             std::fs::write(
                 &script_path,
-                r#"$lines = @(Get-Content -Path tokens.txt)
-if ($lines.Count -eq 0) { exit 1 }
-Write-Output $lines[0]
-$lines | Select-Object -Skip 1 | Set-Content -Path tokens.txt
+                r#"@echo off
+setlocal EnableExtensions DisableDelayedExpansion
+set "first_line="
+<tokens.txt set /p "first_line="
+if not defined first_line exit /b 1
+setlocal EnableDelayedExpansion
+echo(!first_line!
+endlocal
+more +1 tokens.txt > tokens.next
+move /y tokens.next tokens.txt >nul
 "#,
             )?;
             (
-                "powershell".to_string(),
+                "cmd.exe".to_string(),
                 vec![
-                    "-NoProfile".to_string(),
-                    "-ExecutionPolicy".to_string(),
-                    "Bypass".to_string(),
-                    "-File".to_string(),
-                    ".\\print-token.ps1".to_string(),
+                    "/d".to_string(),
+                    "/s".to_string(),
+                    "/c".to_string(),
+                    ".\\print-token.cmd".to_string(),
                 ],
             )
         };
@@ -172,7 +179,7 @@ $lines | Select-Object -Skip 1 | Set-Content -Path tokens.txt
 
     fn auth_config(&self) -> ModelProviderAuthInfo {
         let timeout_ms = if cfg!(windows) {
-            // `powershell.exe` startup can be slow on loaded Windows CI workers
+            // Process startup can be slow on loaded Windows CI workers.
             10_000
         } else {
             2_000

codex-rs/core/src/state/turn.rs

@@ -18,7 +18,7 @@ use rmcp::model::RequestId;
 use tokio::sync::oneshot;
 
 use crate::codex::TurnContext;
-use crate::tasks::SessionTask;
+use crate::tasks::AnySessionTask;
 use codex_protocol::models::PermissionProfile;
 use codex_protocol::protocol::ReviewDecision;
 use codex_protocol::protocol::TokenUsage;
@@ -69,7 +69,7 @@ pub(crate) enum TaskKind {
 pub(crate) struct RunningTask {
     pub(crate) done: Arc<Notify>,
     pub(crate) kind: TaskKind,
-    pub(crate) task: Arc<dyn SessionTask>,
+    pub(crate) task: Arc<dyn AnySessionTask>,
     pub(crate) cancellation_token: CancellationToken,
     pub(crate) handle: Arc<AbortOnDropHandle<()>>,
     pub(crate) turn_context: Arc<TurnContext>,

codex-rs/core/src/tasks/compact.rs

@@ -4,14 +4,12 @@ use super::SessionTask;
 use super::SessionTaskContext;
 use crate::codex::TurnContext;
 use crate::state::TaskKind;
-use async_trait::async_trait;
 use codex_protocol::user_input::UserInput;
 use tokio_util::sync::CancellationToken;
 
 #[derive(Clone, Copy, Default)]
 pub(crate) struct CompactTask;
 
-#[async_trait]
 impl SessionTask for CompactTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Compact
@@ -30,14 +28,14 @@ impl SessionTask for CompactTask {
     ) -> Option<String> {
         let session = session.clone_session();
         let _ = if crate::compact::should_use_remote_compact_task(&ctx.provider) {
-            let _ = session.services.session_telemetry.counter(
+            session.services.session_telemetry.counter(
                 "codex.task.compact",
                 /*inc*/ 1,
                 &[("type", "remote")],
             );
             crate::compact_remote::run_remote_compact_task(session.clone(), ctx).await
         } else {
-            let _ = session.services.session_telemetry.counter(
+            session.services.session_telemetry.counter(
                 "codex.task.compact",
                 /*inc*/ 1,
                 &[("type", "local")],

codex-rs/core/src/tasks/ghost_snapshot.rs

@@ -2,7 +2,6 @@ use crate::codex::TurnContext;
 use crate::state::TaskKind;
 use crate::tasks::SessionTask;
 use crate::tasks::SessionTaskContext;
-use async_trait::async_trait;
 use codex_git_utils::CreateGhostCommitOptions;
 use codex_git_utils::GhostSnapshotReport;
 use codex_git_utils::GitToolingError;
@@ -26,7 +25,6 @@ pub(crate) struct GhostSnapshotTask {
 
 const SNAPSHOT_WARNING_THRESHOLD: Duration = Duration::from_secs(240);
 
-#[async_trait]
 impl SessionTask for GhostSnapshotTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Regular

codex-rs/core/src/tasks/mod.rs

@@ -9,7 +9,7 @@ use std::sync::Arc;
 use std::time::Duration;
 use std::time::Instant;
 
-use async_trait::async_trait;
+use futures::future::BoxFuture;
 use tokio::select;
 use tokio::sync::Notify;
 use tokio_util::sync::CancellationToken;
@@ -126,7 +126,6 @@ impl SessionTaskContext {
 /// intentionally small: implementers identify themselves via
 /// [`SessionTask::kind`], perform their work in [`SessionTask::run`], and may
 /// release resources in [`SessionTask::abort`].
-#[async_trait]
 pub(crate) trait SessionTask: Send + Sync + 'static {
     /// Describes the type of work the task performs so the session can
     /// surface it in telemetry and UI.
@@ -143,21 +142,84 @@ pub(crate) trait SessionTask: Send + Sync + 'static {
     /// abort; implementers should watch for it and terminate quickly once it
     /// fires. Returning [`Some`] yields a final message that
     /// [`Session::on_task_finished`] will emit to the client.
-    async fn run(
+    fn run(
         self: Arc<Self>,
         session: Arc<SessionTaskContext>,
         ctx: Arc<TurnContext>,
         input: Vec<UserInput>,
         cancellation_token: CancellationToken,
-    ) -> Option<String>;
+    ) -> impl std::future::Future<Output = Option<String>> + Send;
 
     /// Gives the task a chance to perform cleanup after an abort.
     ///
     /// The default implementation is a no-op; override this if additional
     /// teardown or notifications are required once
     /// [`Session::abort_all_tasks`] cancels the task.
-    async fn abort(&self, session: Arc<SessionTaskContext>, ctx: Arc<TurnContext>) {
-        let _ = (session, ctx);
+    fn abort(
+        &self,
+        session: Arc<SessionTaskContext>,
+        ctx: Arc<TurnContext>,
+    ) -> impl std::future::Future<Output = ()> + Send {
+        async move {
+            let _ = (session, ctx);
+        }
+    }
+}
+
+pub(crate) trait AnySessionTask: Send + Sync + 'static {
+    fn kind(&self) -> TaskKind;
+
+    fn span_name(&self) -> &'static str;
+
+    fn run(
+        self: Arc<Self>,
+        session: Arc<SessionTaskContext>,
+        ctx: Arc<TurnContext>,
+        input: Vec<UserInput>,
+        cancellation_token: CancellationToken,
+    ) -> BoxFuture<'static, Option<String>>;
+
+    fn abort<'a>(
+        &'a self,
+        session: Arc<SessionTaskContext>,
+        ctx: Arc<TurnContext>,
+    ) -> BoxFuture<'a, ()>;
+}
+
+impl<T> AnySessionTask for T
+where
+    T: SessionTask,
+{
+    fn kind(&self) -> TaskKind {
+        SessionTask::kind(self)
+    }
+
+    fn span_name(&self) -> &'static str {
+        SessionTask::span_name(self)
+    }
+
+    fn run(
+        self: Arc<Self>,
+        session: Arc<SessionTaskContext>,
+        ctx: Arc<TurnContext>,
+        input: Vec<UserInput>,
+        cancellation_token: CancellationToken,
+    ) -> BoxFuture<'static, Option<String>> {
+        Box::pin(SessionTask::run(
+            self,
+            session,
+            ctx,
+            input,
+            cancellation_token,
+        ))
+    }
+
+    fn abort<'a>(
+        &'a self,
+        session: Arc<SessionTaskContext>,
+        ctx: Arc<TurnContext>,
+    ) -> BoxFuture<'a, ()> {
+        Box::pin(SessionTask::abort(self, session, ctx))
     }
 }
 
@@ -179,7 +241,7 @@ impl Session {
         input: Vec<UserInput>,
         task: T,
     ) {
-        let task: Arc<dyn SessionTask> = Arc::new(task);
+        let task: Arc<dyn AnySessionTask> = Arc::new(task);
         let task_kind = task.kind();
         let span_name = task.span_name();
         let started_at = Instant::now();

codex-rs/core/src/tasks/regular.rs

@@ -1,6 +1,5 @@
 use std::sync::Arc;
 
-use async_trait::async_trait;
 use tokio_util::sync::CancellationToken;
 
 use crate::codex::TurnContext;
@@ -25,7 +24,6 @@ impl RegularTask {
     }
 }
 
-#[async_trait]
 impl SessionTask for RegularTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Regular

codex-rs/core/src/tasks/review.rs

@@ -1,7 +1,6 @@
 use std::borrow::Cow;
 use std::sync::Arc;
 
-use async_trait::async_trait;
 use codex_protocol::config_types::WebSearchMode;
 use codex_protocol::items::TurnItem;
 use codex_protocol::models::ContentItem;
@@ -48,7 +47,6 @@ impl ReviewTask {
     }
 }
 
-#[async_trait]
 impl SessionTask for ReviewTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Review
@@ -65,7 +63,7 @@ impl SessionTask for ReviewTask {
         input: Vec<UserInput>,
         cancellation_token: CancellationToken,
     ) -> Option<String> {
-        let _ = session.session.services.session_telemetry.counter(
+        session.session.services.session_telemetry.counter(
             "codex.task.review",
             /*inc*/ 1,
             &[],

codex-rs/core/src/tasks/undo.rs

@@ -4,7 +4,6 @@ use crate::codex::TurnContext;
 use crate::state::TaskKind;
 use crate::tasks::SessionTask;
 use crate::tasks::SessionTaskContext;
-use async_trait::async_trait;
 use codex_git_utils::RestoreGhostCommitOptions;
 use codex_git_utils::restore_ghost_commit_with_options;
 use codex_protocol::models::ResponseItem;
@@ -25,7 +24,6 @@ impl UndoTask {
     }
 }
 
-#[async_trait]
 impl SessionTask for UndoTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Regular
@@ -42,11 +40,11 @@ impl SessionTask for UndoTask {
         _input: Vec<UserInput>,
         cancellation_token: CancellationToken,
     ) -> Option<String> {
-        let _ = session.session.services.session_telemetry.counter(
-            "codex.task.undo",
-            /*inc*/ 1,
-            &[],
-        );
+        session
+            .session
+            .services
+            .session_telemetry
+            .counter("codex.task.undo", /*inc*/ 1, &[]);
         let sess = session.clone_session();
         sess.send_event(
             ctx.as_ref(),

codex-rs/core/src/tasks/user_shell.rs

@@ -1,7 +1,6 @@
 use std::sync::Arc;
 use std::time::Duration;
 
-use async_trait::async_trait;
 use codex_async_utils::CancelErr;
 use codex_async_utils::OrCancelExt;
 use codex_protocol::user_input::UserInput;
@@ -62,7 +61,6 @@ impl UserShellCommandTask {
     }
 }
 
-#[async_trait]
 impl SessionTask for UserShellCommandTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Regular

codex-rs/core/src/tools/code_mode/execute_handler.rs

@@ -1,5 +1,3 @@
-use async_trait::async_trait;
-
 use crate::function_tool::FunctionCallError;
 use crate::tools::context::FunctionToolOutput;
 use crate::tools::context::ToolInvocation;
@@ -53,7 +51,6 @@ impl CodeModeExecuteHandler {
     }
 }
 
-#[async_trait]
 impl ToolHandler for CodeModeExecuteHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/code_mode/wait_handler.rs

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use serde::Deserialize;
 
 use crate::function_tool::FunctionCallError;
@@ -39,7 +38,6 @@ where
     })
 }
 
-#[async_trait]
 impl ToolHandler for CodeModeWaitHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/agent_jobs.rs

@@ -13,7 +13,6 @@ use crate::tools::handlers::multi_agents::build_agent_spawn_config;
 use crate::tools::handlers::parse_arguments;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use codex_protocol::ThreadId;
 use codex_protocol::protocol::AgentStatus;
 use codex_protocol::protocol::SessionSource;
@@ -178,7 +177,6 @@ impl JobProgressEmitter {
     }
 }
 
-#[async_trait]
 impl ToolHandler for BatchJobHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/apply_patch.rs

@@ -21,7 +21,6 @@ use crate::tools::registry::ToolKind;
 use crate::tools::runtimes::apply_patch::ApplyPatchRequest;
 use crate::tools::runtimes::apply_patch::ApplyPatchRuntime;
 use crate::tools::sandboxing::ToolCtx;
-use async_trait::async_trait;
 use codex_apply_patch::ApplyPatchAction;
 use codex_apply_patch::ApplyPatchFileChange;
 use codex_protocol::models::FileSystemPermissions;
@@ -122,7 +121,6 @@ async fn effective_patch_permissions(
     )
 }
 
-#[async_trait]
 impl ToolHandler for ApplyPatchHandler {
     type Output = ApplyPatchToolOutput;
 

codex-rs/core/src/tools/handlers/dynamic.rs

@@ -7,7 +7,6 @@ use crate::tools::context::ToolPayload;
 use crate::tools::handlers::parse_arguments;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use codex_protocol::dynamic_tools::DynamicToolCallRequest;
 use codex_protocol::dynamic_tools::DynamicToolResponse;
 use codex_protocol::models::FunctionCallOutputContentItem;
@@ -20,7 +19,6 @@ use tracing::warn;
 
 pub struct DynamicToolHandler;
 
-#[async_trait]
 impl ToolHandler for DynamicToolHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/js_repl.rs

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use serde_json::Value as JsonValue;
 use std::sync::Arc;
 use std::time::Duration;
@@ -92,7 +91,6 @@ async fn emit_js_repl_exec_end(
     };
     emitter.emit(ctx, stage).await;
 }
-#[async_trait]
 impl ToolHandler for JsReplHandler {
     type Output = FunctionToolOutput;
 
@@ -182,7 +180,6 @@ impl ToolHandler for JsReplHandler {
     }
 }
 
-#[async_trait]
 impl ToolHandler for JsReplResetHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/list_dir.rs

@@ -4,7 +4,6 @@ use std::fs::FileType;
 use std::path::Path;
 use std::path::PathBuf;
 
-use async_trait::async_trait;
 use codex_utils_string::take_bytes_at_char_boundary;
 use serde::Deserialize;
 use tokio::fs;
@@ -45,7 +44,6 @@ struct ListDirArgs {
     depth: usize,
 }
 
-#[async_trait]
 impl ToolHandler for ListDirHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/mcp.rs

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use std::sync::Arc;
 
 use crate::function_tool::FunctionCallError;
@@ -10,7 +9,6 @@ use crate::tools::registry::ToolKind;
 use codex_protocol::mcp::CallToolResult;
 
 pub struct McpHandler;
-#[async_trait]
 impl ToolHandler for McpHandler {
     type Output = CallToolResult;
 

codex-rs/core/src/tools/handlers/mcp_resource.rs

@@ -3,7 +3,6 @@ use std::sync::Arc;
 use std::time::Duration;
 use std::time::Instant;
 
-use async_trait::async_trait;
 use codex_protocol::mcp::CallToolResult;
 use codex_protocol::models::function_call_output_content_items_to_text;
 use rmcp::model::ListResourceTemplatesResult;
@@ -178,7 +177,6 @@ struct ReadResourcePayload {
     result: ReadResourceResult,
 }
 
-#[async_trait]
 impl ToolHandler for McpResourceHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/multi_agents.rs

@@ -17,7 +17,6 @@ pub(crate) use crate::tools::handlers::multi_agents_common::*;
 use crate::tools::handlers::parse_arguments;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use codex_protocol::ThreadId;
 use codex_protocol::models::ResponseInputItem;
 use codex_protocol::openai_models::ReasoningEffort;

codex-rs/core/src/tools/handlers/multi_agents/close_agent.rs

@@ -2,7 +2,6 @@ use super::*;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = CloseAgentResult;
 

codex-rs/core/src/tools/handlers/multi_agents/resume_agent.rs

@@ -4,7 +4,6 @@ use std::sync::Arc;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = ResumeAgentResult;
 

codex-rs/core/src/tools/handlers/multi_agents/send_input.rs

@@ -3,7 +3,6 @@ use crate::agent::control::render_input_preview;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = SendInputResult;
 

codex-rs/core/src/tools/handlers/multi_agents/spawn.rs

@@ -10,7 +10,6 @@ use crate::agent::next_thread_spawn_depth;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = SpawnAgentResult;
 

codex-rs/core/src/tools/handlers/multi_agents/wait.rs

@@ -14,7 +14,6 @@ use tokio::time::timeout_at;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = WaitAgentResult;
 

codex-rs/core/src/tools/handlers/multi_agents_tests.rs

@@ -115,7 +115,6 @@ fn history_contains_inter_agent_communication(
 #[derive(Clone, Copy)]
 struct NeverEndingTask;
 
-#[async_trait::async_trait]
 impl SessionTask for NeverEndingTask {
     fn kind(&self) -> TaskKind {
         TaskKind::Regular

codex-rs/core/src/tools/handlers/multi_agents_v2.rs

@@ -11,7 +11,6 @@ use crate::tools::handlers::multi_agents_common::*;
 use crate::tools::handlers::parse_arguments;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use codex_protocol::AgentPath;
 use codex_protocol::models::ResponseInputItem;
 use codex_protocol::openai_models::ReasoningEffort;

codex-rs/core/src/tools/handlers/multi_agents_v2/close_agent.rs

@@ -2,7 +2,6 @@ use super::*;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = CloseAgentResult;
 

codex-rs/core/src/tools/handlers/multi_agents_v2/followup_task.rs

@@ -6,7 +6,6 @@ use super::*;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = MessageToolResult;
 

codex-rs/core/src/tools/handlers/multi_agents_v2/list_agents.rs

@@ -3,7 +3,6 @@ use crate::agent::control::ListedAgent;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = ListAgentsResult;
 

codex-rs/core/src/tools/handlers/multi_agents_v2/send_message.rs

@@ -6,7 +6,6 @@ use super::*;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = MessageToolResult;
 

codex-rs/core/src/tools/handlers/multi_agents_v2/spawn.rs

@@ -11,7 +11,6 @@ use codex_protocol::protocol::Op;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = SpawnAgentResult;
 

codex-rs/core/src/tools/handlers/multi_agents_v2/wait.rs

@@ -6,7 +6,6 @@ use tokio::time::timeout_at;
 
 pub(crate) struct Handler;
 
-#[async_trait]
 impl ToolHandler for Handler {
     type Output = WaitAgentResult;
 

codex-rs/core/src/tools/handlers/plan.rs

@@ -6,7 +6,6 @@ use crate::tools::context::ToolOutput;
 use crate::tools::context::ToolPayload;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use codex_protocol::config_types::ModeKind;
 use codex_protocol::models::FunctionCallOutputPayload;
 use codex_protocol::models::ResponseInputItem;
@@ -44,7 +43,6 @@ impl ToolOutput for PlanToolOutput {
     }
 }
 
-#[async_trait]
 impl ToolHandler for PlanHandler {
     type Output = PlanToolOutput;
 

codex-rs/core/src/tools/handlers/request_permissions.rs

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use codex_protocol::request_permissions::RequestPermissionsArgs;
 use codex_sandboxing::policy_transforms::normalize_additional_permissions;
 
@@ -12,7 +11,6 @@ use crate::tools::registry::ToolKind;
 
 pub struct RequestPermissionsHandler;
 
-#[async_trait]
 impl ToolHandler for RequestPermissionsHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/request_user_input.rs

@@ -5,7 +5,6 @@ use crate::tools::context::ToolPayload;
 use crate::tools::handlers::parse_arguments;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use codex_protocol::request_user_input::RequestUserInputArgs;
 use codex_tools::REQUEST_USER_INPUT_TOOL_NAME;
 use codex_tools::normalize_request_user_input_args;
@@ -15,7 +14,6 @@ pub struct RequestUserInputHandler {
     pub default_mode_request_user_input: bool,
 }
 
-#[async_trait]
 impl ToolHandler for RequestUserInputHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/shell.rs

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use codex_protocol::ThreadId;
 use codex_protocol::models::ShellCommandToolCallParams;
 use codex_protocol::models::ShellToolCallParams;
@@ -178,7 +177,6 @@ impl From<ShellCommandBackendConfig> for ShellCommandHandler {
     }
 }
 
-#[async_trait]
 impl ToolHandler for ShellHandler {
     type Output = FunctionToolOutput;
 
@@ -279,7 +277,6 @@ impl ToolHandler for ShellHandler {
     }
 }
 
-#[async_trait]
 impl ToolHandler for ShellCommandHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/test_sync.rs

@@ -4,7 +4,6 @@ use std::sync::Arc;
 use std::sync::OnceLock;
 use std::time::Duration;
 
-use async_trait::async_trait;
 use serde::Deserialize;
 use tokio::sync::Barrier;
 use tokio::time::sleep;
@@ -54,7 +53,6 @@ fn barrier_map() -> &'static tokio::sync::Mutex<HashMap<String, BarrierState>> {
     BARRIERS.get_or_init(|| tokio::sync::Mutex::new(HashMap::new()))
 }
 
-#[async_trait]
 impl ToolHandler for TestSyncHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/tool_search.rs

@@ -4,7 +4,6 @@ use crate::tools::context::ToolPayload;
 use crate::tools::context::ToolSearchOutput;
 use crate::tools::registry::ToolHandler;
 use crate::tools::registry::ToolKind;
-use async_trait::async_trait;
 use bm25::Document;
 use bm25::Language;
 use bm25::SearchEngineBuilder;
@@ -25,7 +24,6 @@ impl ToolSearchHandler {
     }
 }
 
-#[async_trait]
 impl ToolHandler for ToolSearchHandler {
     type Output = ToolSearchOutput;
 

codex-rs/core/src/tools/handlers/tool_suggest.rs

@@ -1,6 +1,5 @@
 use std::collections::HashSet;
 
-use async_trait::async_trait;
 use codex_app_server_protocol::AppInfo;
 use codex_mcp::mcp::CODEX_APPS_MCP_SERVER_NAME;
 use codex_rmcp_client::ElicitationAction;
@@ -28,7 +27,6 @@ use crate::tools::registry::ToolKind;
 
 pub struct ToolSuggestHandler;
 
-#[async_trait]
 impl ToolHandler for ToolSuggestHandler {
     type Output = FunctionToolOutput;
 

codex-rs/core/src/tools/handlers/unified_exec.rs

@@ -22,7 +22,6 @@ use crate::unified_exec::ExecCommandRequest;
 use crate::unified_exec::UnifiedExecContext;
 use crate::unified_exec::UnifiedExecProcessManager;
 use crate::unified_exec::WriteStdinRequest;
-use async_trait::async_trait;
 use codex_features::Feature;
 use codex_otel::SessionTelemetry;
 use codex_otel::metrics::names::TOOL_CALL_UNIFIED_EXEC_METRIC;
@@ -86,7 +85,6 @@ fn default_tty() -> bool {
     false
 }
 
-#[async_trait]
 impl ToolHandler for UnifiedExecHandler {
     type Output = ExecCommandToolOutput;
 

codex-rs/core/src/tools/handlers/view_image.rs

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use codex_protocol::models::FunctionCallOutputBody;
 use codex_protocol::models::FunctionCallOutputContentItem;
 use codex_protocol::models::FunctionCallOutputPayload;
@@ -37,7 +36,6 @@ enum ViewImageDetail {
     Original,
 }
 
-#[async_trait]
 impl ToolHandler for ViewImageHandler {
     type Output = ViewImageOutput;
 

codex-rs/core/src/tools/registry.rs

@@ -13,7 +13,6 @@ use crate::tools::context::FunctionToolOutput;
 use crate::tools::context::ToolInvocation;
 use crate::tools::context::ToolOutput;
 use crate::tools::context::ToolPayload;
-use async_trait::async_trait;
 use codex_hooks::HookEvent;
 use codex_hooks::HookEventAfterToolUse;
 use codex_hooks::HookPayload;
@@ -26,6 +25,7 @@ use codex_protocol::protocol::SandboxPolicy;
 use codex_tools::ConfiguredToolSpec;
 use codex_tools::ToolSpec;
 use codex_utils_readiness::Readiness;
+use futures::future::BoxFuture;
 use serde_json::Value;
 use tracing::warn;
 
@@ -35,7 +35,6 @@ pub enum ToolKind {
     Mcp,
 }
 
-#[async_trait]
 pub trait ToolHandler: Send + Sync {
     type Output: ToolOutput + 'static;
 
@@ -54,8 +53,11 @@ pub trait ToolHandler: Send + Sync {
     /// user (through file system, OS operations, ...).
     /// This function must remains defensive and return `true` if a doubt exist on the
     /// exact effect of a ToolInvocation.
-    async fn is_mutating(&self, _invocation: &ToolInvocation) -> bool {
-        false
+    fn is_mutating(
+        &self,
+        _invocation: &ToolInvocation,
+    ) -> impl std::future::Future<Output = bool> + Send {
+        async { false }
     }
 
     fn pre_tool_use_payload(&self, _invocation: &ToolInvocation) -> Option<PreToolUsePayload> {
@@ -73,7 +75,10 @@ pub trait ToolHandler: Send + Sync {
 
     /// Perform the actual [ToolInvocation] and returns a [ToolOutput] containing
     /// the final output to return to the model.
-    async fn handle(&self, invocation: ToolInvocation) -> Result<Self::Output, FunctionCallError>;
+    fn handle(
+        &self,
+        invocation: ToolInvocation,
+    ) -> impl std::future::Future<Output = Result<Self::Output, FunctionCallError>> + Send;
 }
 
 pub(crate) struct AnyToolResult {
@@ -112,11 +117,10 @@ pub(crate) struct PostToolUsePayload {
     pub(crate) tool_response: Value,
 }
 
-#[async_trait]
 trait AnyToolHandler: Send + Sync {
     fn matches_kind(&self, payload: &ToolPayload) -> bool;
 
-    async fn is_mutating(&self, invocation: &ToolInvocation) -> bool;
+    fn is_mutating<'a>(&'a self, invocation: &'a ToolInvocation) -> BoxFuture<'a, bool>;
 
     fn pre_tool_use_payload(&self, invocation: &ToolInvocation) -> Option<PreToolUsePayload>;
 
@@ -127,13 +131,12 @@ trait AnyToolHandler: Send + Sync {
         result: &dyn ToolOutput,
     ) -> Option<PostToolUsePayload>;
 
-    async fn handle_any(
-        &self,
+    fn handle_any<'a>(
+        &'a self,
         invocation: ToolInvocation,
-    ) -> Result<AnyToolResult, FunctionCallError>;
+    ) -> BoxFuture<'a, Result<AnyToolResult, FunctionCallError>>;
 }
 
-#[async_trait]
 impl<T> AnyToolHandler for T
 where
     T: ToolHandler,
@@ -142,8 +145,8 @@ where
         ToolHandler::matches_kind(self, payload)
     }
 
-    async fn is_mutating(&self, invocation: &ToolInvocation) -> bool {
-        ToolHandler::is_mutating(self, invocation).await
+    fn is_mutating<'a>(&'a self, invocation: &'a ToolInvocation) -> BoxFuture<'a, bool> {
+        Box::pin(ToolHandler::is_mutating(self, invocation))
     }
 
     fn pre_tool_use_payload(&self, invocation: &ToolInvocation) -> Option<PreToolUsePayload> {
@@ -159,17 +162,19 @@ where
         ToolHandler::post_tool_use_payload(self, call_id, payload, result)
     }
 
-    async fn handle_any(
-        &self,
+    fn handle_any<'a>(
+        &'a self,
         invocation: ToolInvocation,
-    ) -> Result<AnyToolResult, FunctionCallError> {
-        let call_id = invocation.call_id.clone();
-        let payload = invocation.payload.clone();
-        let output = self.handle(invocation).await?;
-        Ok(AnyToolResult {
-            call_id,
-            payload,
-            result: Box::new(output),
+    ) -> BoxFuture<'a, Result<AnyToolResult, FunctionCallError>> {
+        Box::pin(async move {
+            let call_id = invocation.call_id.clone();
+            let payload = invocation.payload.clone();
+            let output = self.handle(invocation).await?;
+            Ok(AnyToolResult {
+                call_id,
+                payload,
+                result: Box::new(output),
+            })
         })
     }
 }

codex-rs/core/src/tools/registry_tests.rs

@@ -1,10 +1,8 @@
 use super::*;
-use async_trait::async_trait;
 use pretty_assertions::assert_eq;
 
 struct TestHandler;
 
-#[async_trait]
 impl ToolHandler for TestHandler {
     type Output = crate::tools::context::FunctionToolOutput;
 

codex-rs/login/src/auth/auth_tests.rs

@@ -355,10 +355,12 @@ impl ProviderAuthScript {
     fn new(tokens: &[&str]) -> std::io::Result<Self> {
         let tempdir = tempfile::tempdir()?;
         let token_file = tempdir.path().join("tokens.txt");
+        // `cmd.exe`'s `set /p` treats LF-only input as one line, so use CRLF on Windows.
+        let token_line_ending = if cfg!(windows) { "\r\n" } else { "\n" };
         let mut token_file_contents = String::new();
         for token in tokens {
             token_file_contents.push_str(token);
-            token_file_contents.push('\n');
+            token_file_contents.push_str(token_line_ending);
         }
         std::fs::write(&token_file, token_file_contents)?;
 
@@ -385,23 +387,28 @@ mv tokens.next tokens.txt
 
         #[cfg(windows)]
         let (command, args) = {
-            let script_path = tempdir.path().join("print-token.ps1");
+            let script_path = tempdir.path().join("print-token.cmd");
             std::fs::write(
                 &script_path,
-                r#"$lines = @(Get-Content -Path tokens.txt)
-if ($lines.Count -eq 0) { exit 1 }
-Write-Output $lines[0]
-$lines | Select-Object -Skip 1 | Set-Content -Path tokens.txt
+                r#"@echo off
+setlocal EnableExtensions DisableDelayedExpansion
+set "first_line="
+<tokens.txt set /p "first_line="
+if not defined first_line exit /b 1
+setlocal EnableDelayedExpansion
+echo(!first_line!
+endlocal
+more +1 tokens.txt > tokens.next
+move /y tokens.next tokens.txt >nul
 "#,
             )?;
             (
-                "powershell.exe".to_string(),
+                "cmd.exe".to_string(),
                 vec![
-                    "-NoProfile".to_string(),
-                    "-ExecutionPolicy".to_string(),
-                    "Bypass".to_string(),
-                    "-File".to_string(),
-                    ".\\print-token.ps1".to_string(),
+                    "/d".to_string(),
+                    "/s".to_string(),
+                    "/c".to_string(),
+                    ".\\print-token.cmd".to_string(),
                 ],
             )
         };
@@ -436,13 +443,12 @@ exit 1
 
         #[cfg(windows)]
         let (command, args) = (
-            "powershell.exe".to_string(),
+            "cmd.exe".to_string(),
             vec![
-                "-NoProfile".to_string(),
-                "-ExecutionPolicy".to_string(),
-                "Bypass".to_string(),
-                "-Command".to_string(),
-                "exit 1".to_string(),
+                "/d".to_string(),
+                "/s".to_string(),
+                "/c".to_string(),
+                "exit /b 1".to_string(),
             ],
         );
 
@@ -457,8 +463,8 @@ exit 1
         serde_json::from_value(json!({
             "command": self.command,
             "args": self.args,
-            // `powershell.exe` startup can be slow on loaded Windows CI workers, so leave enough
-            // slack to avoid turning these auth-cache assertions into a process-launch timing test.
+            // Process startup can be slow on loaded Windows CI workers, so leave enough slack to
+            // avoid turning these auth-cache assertions into a process-launch timing test.
             "timeout_ms": 10_000,
             "refresh_interval_ms": 60000,
             "cwd": self.tempdir.path(),

codex-rs/tui/src/tui.rs

@@ -569,11 +569,10 @@ impl Tui {
                 terminal.invalidate_viewport();
             }
 
-            let area = terminal.viewport_area;
-
             // Update the y position for suspending so Ctrl-Z can place the cursor correctly.
             #[cfg(unix)]
             {
+                let area = terminal.viewport_area;
                 let inline_area_bottom = if self.alt_screen_active.load(Ordering::Relaxed) {
                     self.alt_saved_viewport
                         .map(|r| r.bottom().saturating_sub(1))

personal/starr/skills/codex-applied-devbox/SKILL.md

@@ -0,0 +1,328 @@
+---
+name: codex-applied-devbox
+description: Sync a local Codex worktree from `~/code/codex-worktrees/` to a mirrored path on a remote host, then run a reproducible remote build or exec command there.
+---
+
+# Codex Applied Devbox
+
+Use this skill when you want local file editing/search on your laptop, but want
+the actual build or execution to happen on a remote host such as `dev`.
+
+This skill assumes:
+
+- remote host alias: `dev`
+- local Codex worktree root: `~/code/codex-worktrees`
+- remote mirror root: `/tmp/codex-worktrees`
+
+If the box itself needs to be created, resumed, suspended, or inspected, use
+the `applied-devbox` skill first.
+
+## Objective
+
+1. Create or reuse a local worktree under `~/code/codex-worktrees/`.
+2. Mirror that worktree to the remote host under `/tmp/codex-worktrees/`.
+3. Run one configurable remote Bazel command against the mirrored copy.
+4. Keep the flow reproducible by excluding build artifacts and local repo state.
+
+## Operator Defaults
+
+When using this skill interactively, the operator should bias toward immediate
+execution over setup-heavy preflights.
+
+Default posture:
+
+- If the user asks for a specific PR or branch, create a fresh worktree first.
+- Do not spend time checking whether an equivalent worktree already exists
+  unless the user explicitly asked to reuse one.
+- Assume `dev` is reachable and run the sync directly; only debug SSH or remote
+  prereqs after the real command fails.
+- Avoid separate "can I reach the host?" or "does rsync exist remotely?"
+  checks unless there is a known problem pattern.
+- Prefer one end-to-end attempt over multiple speculative probes.
+
+In practice, that means the operator should usually do this:
+
+1. Fetch the requested PR or ref.
+2. Create a new local worktree under `~/code/codex-worktrees/`.
+3. Run `sync-worktree-and-run` immediately.
+4. Only inspect host reachability, missing tools, or conflicting paths if that
+   end-to-end run fails.
+
+### PR Fast Path
+
+For a request like "build PR 16620 on devbox", prefer this shape:
+
+```bash
+mkdir -p ~/code/codex-worktrees
+git -C ~/code/codex fetch origin pull/16620/head
+git -C ~/code/codex worktree add -b pr-16620 \
+  ~/code/codex-worktrees/pr-16620 FETCH_HEAD
+skills/codex-applied-devbox/scripts/sync-worktree-and-run \
+  ~/code/codex-worktrees/pr-16620
+```
+
+This is intentionally direct. It skips separate validation steps and lets the
+real sync/build path prove whether the environment is healthy.
+
+## Key rule for concurrent builds
+
+- Keep each worktree as its own Bazel workspace path.
+- Let Bazel derive a separate `output_base` per worktree automatically.
+- Reuse the shared caches from `.bazelrc`:
+  - `~/.cache/bazel-disk-cache`
+  - `~/.cache/bazel-repo-cache`
+  - `~/.cache/bazel-repo-contents-cache`
+- Do not force a shared `--output_base` across two live worktrees.
+
+On `dev`, this has already been validated with two mirrored worktrees:
+
+- both builds started at the same second
+- each worktree got its own Bazel server and `output_base`
+- both builds reused shared cache state and completed successfully
+
+## Script
+
+The script lives at:
+
+`skills/codex-applied-devbox/scripts/sync-worktree-and-run`
+
+Default behavior:
+
+- host: `dev`
+- local worktree root: `~/code/codex-worktrees`
+- remote mirror root: `/tmp/codex-worktrees`
+- remote command:
+  `cd codex-rs && export PATH=$HOME/code/openai/project/dotslash-gen/bin:$HOME/.local/bin:$PATH && bazel build --bes_backend= --bes_results_url= //codex-rs/cli:cli`
+- prints the exact copy-paste remote Codex Bazel run command for the mirrored checkout
+- the helper command intentionally stays on the mirrored-worktree Bazel path and uses `//codex-rs/cli:codex`
+
+Example:
+
+```bash
+skills/codex-applied-devbox/scripts/sync-worktree-and-run \
+  ~/code/codex-worktrees/my-feature
+```
+
+This will mirror:
+
+- local: `~/code/codex-worktrees/my-feature`
+- remote: `/tmp/codex-worktrees/my-feature`
+
+It will print:
+
+```bash
+ssh -t dev 'cd /tmp/codex-worktrees/my-feature/codex-rs && export PATH=$HOME/code/openai/project/dotslash-gen/bin:$HOME/.local/bin:$PATH && bazel run --bes_backend= --bes_results_url= //codex-rs/cli:codex --'
+```
+
+Custom host, remote root, and command:
+
+```bash
+skills/codex-applied-devbox/scripts/sync-worktree-and-run \
+  --host dev \
+  --remote-root /tmp/codex-worktrees \
+  --command 'cd codex-rs && export PATH=$HOME/code/openai/project/dotslash-gen/bin:$HOME/.local/bin:$PATH && bazel build --bes_backend= --bes_results_url= //codex-rs/tui:tui' \
+  ~/code/codex-worktrees/my-feature
+```
+
+## Recommended setup
+
+1. Create the local worktree from your main Codex checkout.
+
+```bash
+mkdir -p ~/code/codex-worktrees
+git -C ~/code/codex worktree add -b my-feature \
+  ~/code/codex-worktrees/my-feature origin/main
+```
+
+2. Edit locally or fetch the PR/ref you want to test.
+
+3. Sync and build remotely immediately:
+
+```bash
+skills/codex-applied-devbox/scripts/sync-worktree-and-run \
+  ~/code/codex-worktrees/my-feature
+```
+
+4. Repeat sync/build as needed after local edits.
+
+## Retrospective Notes
+
+The main friction in a real run was not rsync itself. It was operator delay
+before the first real attempt:
+
+- checking whether a matching worktree already existed before simply creating
+  the one needed for the task
+- verifying host reachability before letting the real sync prove it
+- remembering the mirrored remote path after the sync
+- hand-writing the SSH command needed to run Codex in that mirrored checkout
+- waiting through a cold Bazel build with no simple "jump in here yourself"
+  command printed by the script
+
+The current script update addresses the third and fourth issues by printing the
+exact `ssh -t ...` command for running Codex in the mirrored checkout.
+This skill update addresses the first two issues by telling the operator to
+start the end-to-end flow sooner and only investigate after an actual failure.
+
+The next improvements worth making, if you want this flow to feel faster and
+more automatic, are:
+
+- add `--pr <number>` so the script can fetch `pull/<n>/head` and create or
+  reuse `~/code/codex-worktrees/pr-<n>` itself
+- add `--tmux-window <name>` support so the remote command can start in a named
+  tmux session/window and print the exact follow/log command
+- add an optional "sync only changed files" mode driven by git status or
+  `git diff --name-only` for large worktrees
+- add an optional `--bazel-target <label>` shortcut so users do not have to
+  remember the common labels
+
+## Validated run paths on `dev`
+
+What has been verified:
+
+- `sync-worktree-and-run` can mirror the local worktree and complete a remote
+  Bazel build with:
+  `bazel build --bes_backend= --bes_results_url= //codex-rs/cli:cli`
+- on current `main`, `bazel run --bes_backend= --bes_results_url=
+  //codex-rs/cli:codex --` builds successfully on `dev`
+
+Practical note:
+
+- older pre-`#16634` checkouts could fail on `dev` when launching
+  `//codex-rs/cli:codex`; treat current `main` as the baseline before carrying
+  that older caveat forward
+
+## Bazel defaults on the devbox
+
+Use this decision rule:
+
+- Default to Bazel for remote builds in mirrored worktrees.
+- Keep the existing `.bazelrc` cache settings; they already share the useful
+  cache layers across worktrees.
+- On `dev`, clear the BES flags for routine builds:
+  `--bes_backend= --bes_results_url=`
+- Prepend both common Bazel locations to `PATH`:
+  `export PATH=$HOME/code/openai/project/dotslash-gen/bin:$HOME/.local/bin:$PATH`
+- Prefer labels that have already been validated on the host:
+  - `//codex-rs/cli:cli`
+  - `//codex-rs/tui:tui`
+  - `//codex-rs/utils/absolute-path:absolute-path`
+
+Current practical note:
+
+- older pre-`#16634` checkouts could fail on `dev` when launching
+  `//codex-rs/cli:codex`; re-test current `main` before treating that older
+  caveat as still active
+
+What is shared versus isolated:
+
+- Shared across worktrees:
+  - `~/.cache/bazel-disk-cache`
+  - `~/.cache/bazel-repo-cache`
+  - `~/.cache/bazel-repo-contents-cache`
+  - the Bazel install base under `~/.cache/bazel/_bazel_dev-user/install`
+- Still per worktree:
+  - each `output_base`
+  - each Bazel server
+  - mutable workspace-specific state under
+    `~/.cache/bazel/_bazel_dev-user/<hash>`
+
+That means this setup saves disk space compared with giving every worktree its
+own completely separate Bazel root, but it does not eliminate the large
+per-worktree `output_base` directories.
+
+## Fresh default devbox bootstrap
+
+This was validated against a fresh box created with a temporary minimal config
+override, not your personal `~/.config/applied-devbox/config.toml`.
+
+Validated sequence:
+
+1. Create a minimal config file locally and point `APPLIED_DEVBOX_CONFIG` at it.
+   An empty file is enough if you want the CLI's built-in defaults without your
+   personal apt/git/custom-setup additions.
+
+2. Create the box:
+
+```bash
+APPLIED_DEVBOX_CONFIG=/tmp/applied-devbox-default-config.toml \
+  a devbox new codex-bazel-0402-1800 \
+  --sku cpu64 \
+  --home-size 2Ti \
+  --skip-secret-setup \
+  --skip-tool-setup
+```
+
+If you expect large Bazel output trees or long-lived mirrored worktrees, prefer
+`--sku cpu64 --home-size 2Ti` over the smaller defaults.
+
+3. If the first `a devbox ssh` fails on websocket transport, establish
+   connectivity with:
+
+```bash
+APPLIED_DEVBOX_CONFIG=/tmp/applied-devbox-default-config.toml \
+  a devbox ssh codex-bazel-0402-1800 --no-ws --no-tmux -- bash -lc 'hostname && whoami'
+```
+
+After that, direct `ssh codex-bazel-0402-1800` was available on this machine.
+
+4. Install `rsync` once on the new box:
+
+```bash
+ssh codex-bazel-0402-1800 'sudo apt-get update && sudo apt-get install -y rsync'
+```
+
+5. Run the mirrored Bazel build:
+
+```bash
+skills/codex-applied-devbox/scripts/sync-worktree-and-run \
+  --host codex-bazel-0402-1800 \
+  ~/code/codex-worktrees/my-feature
+```
+
+What was validated on the fresh box:
+
+- the box came up from a default-style config override
+- the first websocket-based SSH attempt failed, but `--no-ws` succeeded
+- plain `ssh <box>` worked after the first successful `--no-ws` connection
+- `rsync` was the only package that had to be installed manually
+- Bazel was already available from the default OpenAI clone at
+  `~/code/openai/project/dotslash-gen/bin`
+- the first mirrored `//codex-rs/cli:cli` build completed successfully in
+  `68.24s`
+
+## Sync exclusions
+
+The script excludes:
+
+- `.git`
+- `.sl`
+- `.jj`
+- `target`
+- `node_modules`
+- `.venv`, `venv`
+- `dist`, `build`, `.next`
+- `.pytest_cache`, `.mypy_cache`, `__pycache__`, `.ruff_cache`
+- `.DS_Store`
+
+## Cleanup
+
+Remove a stale remote mirror:
+
+```bash
+ssh dev 'rm -rf /tmp/codex-worktrees/my-feature'
+```
+
+Remove the local worktree when finished:
+
+```bash
+git -C ~/code/codex worktree remove ~/code/codex-worktrees/my-feature
+git -C ~/code/codex branch -D my-feature
+```
+
+## Guardrails
+
+- Treat the local worktree as the editing source of truth.
+- Treat the mirrored remote copy as disposable build state.
+- Do not sync `.git` or build outputs.
+- Keep the local worktree under `~/code/codex-worktrees/` so the mirror path is
+  stable and easy to clean up.

personal/starr/skills/codex-applied-devbox/scripts/sync-worktree-and-run

@@ -0,0 +1,165 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage:
+  sync-worktree-and-run [options] <local-worktree>
+
+Sync a local Codex worktree to a mirrored path on a remote host, then run a
+command there.
+
+Options:
+  --host <host>               Remote SSH host. Default: dev
+  --local-root <path>         Expected local worktree root.
+                              Default: ~/code/codex-worktrees
+  --remote-root <path>        Remote mirror root.
+                              Default: /tmp/codex-worktrees
+  --command <command>         Command to run on the remote copy.
+                              Default: cd codex-rs &&
+                              export PATH=$HOME/code/openai/project/dotslash-gen/bin:
+                              $HOME/.local/bin:$PATH &&
+                              bazel build --bes_backend= --bes_results_url=
+                              //codex-rs/cli:cli
+  Prints the exact Bazel-backed Codex SSH run command for the mirrored
+  checkout on every run.
+  -h, --help                  Show this help text.
+EOF
+}
+
+shell_single_quote() {
+  local value="$1"
+  value=${value//\'/\'\"\'\"\'}
+  printf "'%s'" "$value"
+}
+
+host="dev"
+local_root="$HOME/code/codex-worktrees"
+remote_root="/tmp/codex-worktrees"
+command_to_run='cd codex-rs && export PATH=$HOME/code/openai/project/dotslash-gen/bin:$HOME/.local/bin:$PATH && bazel build --bes_backend= --bes_results_url= //codex-rs/cli:cli'
+local_worktree=""
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --host)
+      host="$2"
+      shift 2
+      ;;
+    --local-root)
+      local_root="$2"
+      shift 2
+      ;;
+    --remote-root)
+      remote_root="$2"
+      shift 2
+      ;;
+    --command)
+      command_to_run="$2"
+      shift 2
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    -*)
+      echo "unknown option: $1" >&2
+      usage >&2
+      exit 2
+      ;;
+    *)
+      if [[ -n "$local_worktree" ]]; then
+        echo "expected exactly one local worktree path" >&2
+        usage >&2
+        exit 2
+      fi
+      local_worktree="$1"
+      shift
+      ;;
+  esac
+done
+
+if [[ -z "$local_worktree" ]]; then
+  echo "missing local worktree path" >&2
+  usage >&2
+  exit 2
+fi
+
+if [[ ! -d "$local_worktree" ]]; then
+  echo "local worktree does not exist: $local_worktree" >&2
+  exit 1
+fi
+
+if [[ ! -d "$local_root" ]]; then
+  echo "local root does not exist: $local_root" >&2
+  exit 1
+fi
+
+local_root_abs="$(cd "$local_root" && pwd -P)"
+local_worktree_abs="$(cd "$local_worktree" && pwd -P)"
+
+case "$local_worktree_abs/" in
+  "$local_root_abs"/*)
+    relative_path="${local_worktree_abs#$local_root_abs/}"
+    ;;
+  *)
+    echo "local worktree must live under local root: $local_root_abs" >&2
+    exit 1
+    ;;
+esac
+
+remote_worktree="${remote_root%/}/$relative_path"
+remote_codex_dir="${remote_worktree%/}/codex-rs"
+remote_codex_run_command="cd $remote_codex_dir && export PATH=\$HOME/code/openai/project/dotslash-gen/bin:\$HOME/.local/bin:\$PATH && bazel run --bes_backend= --bes_results_url= //codex-rs/cli:codex --"
+
+echo "# Shared-worktree Bazel Codex run command:"
+echo "ssh -t $host $(shell_single_quote "$remote_codex_run_command")"
+
+if ! command -v rsync >/dev/null 2>&1; then
+  echo "local rsync is not installed or not on PATH" >&2
+  exit 1
+fi
+
+if ! ssh "$host" 'command -v rsync >/dev/null 2>&1'; then
+  echo "remote rsync is not installed on $host" >&2
+  echo "try: ssh $host 'sudo apt-get update && sudo apt-get install -y rsync'" >&2
+  exit 1
+fi
+
+ssh "$host" bash -s -- "$remote_worktree" <<'EOF'
+set -euo pipefail
+remote_worktree="$1"
+mkdir -p "$remote_worktree"
+EOF
+
+rsync -a --delete \
+  --exclude='.git' \
+  --exclude='.sl' \
+  --exclude='.jj' \
+  --exclude='target' \
+  --exclude='node_modules' \
+  --exclude='.venv' \
+  --exclude='venv' \
+  --exclude='dist' \
+  --exclude='build' \
+  --exclude='.next' \
+  --exclude='.pytest_cache' \
+  --exclude='.mypy_cache' \
+  --exclude='__pycache__' \
+  --exclude='.ruff_cache' \
+  --exclude='.DS_Store' \
+  -e ssh \
+  "$local_worktree_abs/" \
+  "$host:$remote_worktree/"
+
+printf -v remote_worktree_q '%q' "$remote_worktree"
+printf -v command_to_run_q '%q' "$command_to_run"
+
+ssh "$host" "bash -s" <<EOF
+set -euo pipefail
+remote_worktree=$remote_worktree_q
+command_to_run=$command_to_run_q
+
+cd "\$remote_worktree"
+echo "REMOTE_PWD=\$PWD"
+eval "\$command_to_run"
+EOF