Michael Bolin 83bbb4f326 app-server: stop returning thread permission profiles (#22792)
## Why

The app-server thread lifecycle API should no longer expose the full
`PermissionProfile` value. After the permissions-profile migration,
clients should round-trip only the active profile identity through
`activePermissionProfile` and `permissions` when that identity is known.

The full profile is server-side config. Treating a response-derived
legacy sandbox projection as a new local profile can lose named-profile
restrictions and accidentally widen permissions on the next turn. The
legacy `sandbox` response field remains only as the
compatibility/display fallback.

## What Changed

- Removed `permissionProfile` from `ThreadStartResponse`,
`ThreadResumeResponse`, and `ThreadForkResponse`.
- Stopped populating that field in app-server thread start/resume/fork
responses.
- Updated embedded exec/TUI response mapping to derive display
permission state from local config or the legacy sandbox fallback
instead of a response profile value.
- Added a TUI turn override shape that distinguishes preserving server
permissions, selecting an active profile id, and sending a legacy
sandbox for an explicit local override.
- Preserved remote app-server permissions across turns by sending
`permissions` only when an `activePermissionProfile` id is known, and
otherwise sending no sandbox override unless the user selected a local
override.
- Kept embedded `thread/resume` hydration server-authored when
`activePermissionProfile` is absent, which matches the live-thread
attach path where the server ignores requested overrides.
- Updated the app-server README to remove the obsolete lifecycle
response `permissionProfile` reference. The remaining
`permissionProfile` README references are request-side permission
overrides.
- Regenerated app-server JSON schema and TypeScript fixtures.
- Kept the generated typed response enum exempt from
`large_enum_variant`, matching the existing payload enum exemption after
the lifecycle response variants shrank.

## How To Review

Start with `codex-rs/app-server-protocol/src/protocol/v2/thread.rs` to
confirm the response shape, then check the response construction in
`codex-rs/app-server/src/request_processors`. The generated schema and
TypeScript fixture changes are mechanical follow-through from the
protocol removal.

The TUI behavior is the delicate part: review
`codex-rs/tui/src/app_server_session.rs` for response hydration and
turn-start override projection, then
`codex-rs/tui/src/app/thread_routing.rs` for the decision about whether
the next turn should preserve the server snapshot, send an active
profile id, or send a legacy sandbox for an explicit local override.

## Verification

- `just write-app-server-schema`
- `cargo test -p codex-app-server-protocol
thread_lifecycle_responses_default_missing_optional_fields`
- `cargo test -p codex-exec
session_configured_from_thread_response_uses_permission_profile_from_config`
- `cargo test -p codex-tui --lib thread_response`
- `cargo test -p codex-tui turn_permissions_`
- `cargo test -p codex-tui
resume_response_restores_turns_from_thread_items`
- `cargo test -p codex-analytics
track_response_only_enqueues_analytics_relevant_responses`
- `just fix -p codex-analytics`
- `just fix -p codex-app-server-protocol`
- `just fix -p codex-tui`
- `just argument-comment-lint`

---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/22792).
* #22795
* __->__ #22792
2026-05-15 12:45:48 -07:00
2026-05-15 12:41:18 -07:00
2026-04-24 17:49:29 -07:00
2026-04-24 17:49:29 -07:00
2026-04-07 10:55:58 -07:00

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