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codex/codex-rs/tui
Michael BolinandGitHub af95662a70 permissions: require profiles in TUI thread state (#19773)
## Why

`ThreadSessionState` is the TUI's cached view of an app-server session.
To make `PermissionProfile` the canonical runtime permissions model,
cached thread sessions need to always have a profile instead of treating
the profile as an optional supplement to a legacy `sandbox` response
field.

The main compatibility concern is older app-server v2 lifecycle
responses that only include `sandbox` and omit `permissionProfile`:

- `thread/start` -> `ThreadStartResponse.sandbox`
- `thread/resume` -> `ThreadResumeResponse.sandbox`
- `thread/fork` -> `ThreadForkResponse.sandbox`

Those responses must still hydrate correctly when the TUI is pointed at
an older app-server. This PR converts the legacy `sandbox` value into a
`PermissionProfile` immediately at response ingestion time, using the
response `cwd`, so cached sessions do not carry an optional profile that
can later reinterpret cwd-bound grants against a different thread cwd.

This fallback is intentionally boundary compatibility. The follow-up PRs
in this stack continue the cleanup by making `SessionConfiguredEvent`
profile-only, deriving sandbox projections from snapshots only when an
API still needs them, and then removing `sandbox_policy` from
`ThreadSessionState`.

## What Changed

- Makes `ThreadSessionState.permission_profile` required.
- Converts legacy app-server response `sandbox` values into a
`PermissionProfile` at ingestion time using the response cwd.
- Ensures `thread/read` hydration does not reuse a primary session
profile that may be anchored to a different cwd; it uses the active
widget permission settings for the read thread fallback instead of
reusing cached primary-session permissions.
- Keeps the app-server request path unchanged: embedded sessions send
profiles, while remote sessions continue using legacy sandbox overrides
for compatibility.

## Verification

- `cargo test -p codex-tui thread_read --lib`
- `cargo test -p codex-tui
permission_settings_sync_preserves_active_profile_only_rules --lib`
- `cargo test -p codex-tui
resume_response_restores_turns_from_thread_items --lib`
- `cargo test -p codex-tui thread_session_state::tests --lib`




























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[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/19773).
* #19900
* #19899
* #19776
* #19775
* #19774
* __->__ #19773
2026-04-27 20:39:06 -07:00
..
2026-04-19 11:59:41 -07:00