Clear cancelled Aiden Live picker state before 0.41.4

[sambitcreate]

Summary

• block Live start while the native screen picker is pending
• clear the picker busy state whenever display authority is cancelled
• keep stale picker completions from clearing a newer operation
• add controller and setup-dialog regression coverage

Validation

• npm run type-check
• npm run lint
• npm run test:gemini-live (180 Live + 48 Computer Use)

Release coordination

The 0.41.4 release run from #135 was cancelled before publication when Pullfrog posted this final inline finding. Merge only after exact-head CI, Pullfrog, and a fresh unresolved-thread query are all clean.

[pullfrog]

Important

This PR can leave the Live setup permanently unable to start screen picking after a capability or API refresh during an in-flight picker.

Reviewed changes This review covers the setup-dialog start guard, picker-generation cancellation reset, and the focused controller/UI regression coverage plus release documentation.

• Picker gating Start Live and the controller now refuse to begin while the native display picker is pending.
• Cancellation handling Display-authority invalidation resets the picker busy state and preserves late-picker fencing.
• Regression coverage The tests cover pending-picker start blocking, synchronous cancellation reset, late stream cleanup, and the setup-dialog contract.

  ^{｜ Fix all ➔ ｜ Fix 👍s ➔ ｜ View workflow run ｜ Using GPT Luna ｜ 𝕏}

[pullfrog]

✅ No new issues found.

Reviewed changes This incremental review covers the picker re-arm follow-up pushed since the prior Pullfrog review.

• Re-armed picker state Reset screenBusy from the replacement lifecycle effect after API or capability cleanup, while preserving the final-unmount guard.
• Added refresh regression coverage Added an API-refresh fixture path that proves a cancelled native picker can be followed by a new screen choice.
• Recorded the lifecycle lesson Documented the React effect cleanup and replacement-setup sequencing in the troubleshooting notes.

  ^{｜ View workflow run ｜ Using GPT Luna ｜ 𝕏}