[afpruivo]

Fixes #857.

When the island's ack misses the 800 ms window (a busy or throttled webview), or nobody answers within 108 s, pipe.rs drops the request and Claude Code asks in the terminal. The island wasn't told, so it kept the card until its own 110 s timer. During that time clicking did nothing ("no pending request"), and every other permission request was handed back to the terminal by the one-card rule.

Change

• pipe.rs: when wait_for_decision returns no decision, emit approval-expired with the request id.
• island/hooks.ts: on approval-expired, if the card on screen belongs to that request, drop it and cancel its 110 s timer. Any other id is ignored.

Events reach the island in order, so a card that comes up after the ack window still goes. #849 and #869 touch the same files but not these lines.

Tests

• New test in tests/hooks.test.mjs: another request's expiry leaves the card alone; its own expiry takes it down; the next request gets its card, and the old 110 s timer doesn't take it down.
• Live on Windows 11, with the island's JavaScript frozen for 2.5 s over WebView2 remote debugging while request A came in, then request B 3 s later:
  • 0.5.2 (same pipe.rs and hooks.ts as main): A's ack misses the 800 ms window, A's card comes up anyway and stays; B is declined at once (decline id=…, not shown — terminal takes over).
  • This branch: A's card is gone once the island wakes; B gets its own card and the relay waits for it.
• npm test (467 passed), cargo test --lib (516 passed), tsc --noEmit clean, on Windows 11.

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