Rich UI slice 9: bounded bash_watch for a viewed task

Merged
AF
3d ago
+497-18

Rich UI slice 9: a phone viewing a running shell task can wait briefly for new output with bash_watch, through the carrier route.

  • Bounded polling goes through the existing observation-only native watch handler. A deferred completion releases its executor slot, and only the completed response is projected back to the phone.
  • The reply budget is capped at 20 s from the original frame receipt, including queued or deferred time, and keeps any earlier client deadline. That needed one call site in subc/mod.rs to pass the existing receipt budget into rich_ui::session::submit.
  • Carrier dispatch stays non-worker and preset-free. A phone watch never renews the task, recovers it, attaches a view or writes session sidecars, and it never moves the task's kill deadline.

Tests: closed arguments and timeout bounds, literal and regex matches, exit, delayed output and exit, a 10,000 ms request clamped to 5,000 ms, unchanged task metadata and deadline, and a loaded task near its kill hand-off margin. A regression resets only the budget's receipt time to admission time and fails exactly the late-admission test.

Verified on the build server: 425 Rich UI, consent, tool-provider and bash_watch library tests, plus the Windows target check. Production stays unpublished, since the manifest isn't published yet.

Summary by cubic

Adds a bounded bash_watch operation for a viewed task through the carrier route, so a phone can briefly poll for new output or exit without holding an executor slot or extending task lifetime.

Details

  • Uses the observation-only native watch handler; a deferred completion releases its executor slot and only the completed response is projected back.
  • Caps the reply budget at 20 s from frame receipt, including queued or deferred time, while preserving any earlier client deadline; passes the receipt budget into rich_ui::session::submit.
  • Carrier dispatch stays non-worker and preset-free; a phone watch never renews, recovers, attaches a view, writes session sidecars, or moves the task's kill deadline.