## Why
The cleanup-hook allowlist for `browser@openai-curated-remote` accepted only `Stop` and `SubagentStop`, leaving its cleanup hook unavailable when a turn was interrupted.
## What changed
Allow `Interrupt` to invoke `browser.turn_ended` through `codex_apps`, retaining the registered browser connector and empty-input requirements.
## Testing
Extend hook metadata tests to cover interrupts, rejecting mismatched connectors and manifest-provided arguments. Extend executor integration coverage to interrupt an active turn and verify that browser app and computer-use cleanup calls use their separate MCP routes.
GitOrigin-RevId: 355801f9ca3086bae80d1e623d0be7e1772a39e1
## What changed
- Centralize the allowlist for bundled MCP cleanup hooks and use it for both local and executor-discovered plugins, including `unified-computer-use` cleanup through `cua_repl`.
- Mark matching cleanup hooks as trusted built-ins so they run without saved hook trust and remain active when regular hooks or their per-hook state are disabled. Plugin enablement and managed-only policy still apply.
- Hide built-in cleanup hooks from hook listings and lifecycle notifications while retaining their metrics. Keep the built-in classification out of serialized protocol data.
## Testing
- Cover allowlist boundaries, trust and enablement behavior, inline and file-based hook declarations, MCP success and error responses, hook listing, lifecycle notifications, metrics, and protocol serialization.
GitOrigin-RevId: f93b7bc99f4ed9694f529def8ec383b45f31430e
Samuel Yuan