## Why
`PermissionProfile` is now the canonical internal permissions
representation, but the app-server wire shape is still intentionally
unstable while the migration continues. Stable app-server clients should
not see or generate code for these fields until the wire format settles.
## What changed
- Marks every app-server v2 field that sends `PermissionProfile` as
experimental, including `command/exec`, `thread/start`, `thread/resume`,
`thread/fork`, and `turn/start` request/response payloads.
- Enables per-field experimental inspection for `command/exec`, so
`permissionProfile` is gated without making the entire method
experimental.
- Fixes the generated TypeScript schema filter to be comment-aware. The
previous scanner treated apostrophes inside doc comments as string
delimiters, so some experimental fields leaked into stable TypeScript
even though stable JSON was filtered correctly.
## Verification
- `cargo test -p codex-app-server-protocol`
---
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