fix: timeout stalled plugin updates

[Pranjal1423]

Fixes #765

When a plugin update request stalls indefinitely (e.g. server-side hang, network freeze, or unresponsive proxy), the promise never resolves or rejects. Because the plugins app uses a serial update queue (updateQueue), a hanging promise causes the queue to remain locked forever, leaving the plugin row permanently in a busy state and preventing any subsequent updates (both single and bulk) from running.

This PR adds an execution timeout (DEFAULT_TIMEOUT_MS = 60_000) to queued update operations via Promise.race(). If an update promise fails to resolve within the timeout period, it is rejected with an Update timeout error. This allows the existing try/catch/finally error handling in runUpdate() and runBulkUpdate() to catch the error, show a failure notice, release the busy state on the row, and allow subsequent queued updates to proceed.

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Changes

• apps/plugins/parts/update-queue.ts: Wrapped the task invocation in drain() with Promise.race() against a configurable timeout timer (defaulting to 60s), ensuring the timeout timer is always cleaned up on completion.
• tests/vitest/plugins-update-queue.test.ts: Added comprehensive unit test coverage verifying:
  • Updates completing before the timeout resolve normally.
  • Stalled updates reject with a timeout error after the configured timeout.
  • Subsequent updates in the queue continue executing after a preceding task times out.
  • Direct task rejections before timeout propagate cleanly without delay.

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How to test

1. Open the Plugins app in OpenStation.
2. Trigger a plugin update under conditions where the request stalls or times out.
3. Verify that after the timeout period:
   • A failure notice/toast is displayed indicating the update failed.
   • The busy indicator on the plugin row clears and the row is unlocked.
   • Subsequent plugin updates can be clicked and executed without needing to reload the app.
4. Run automated tests: npm run test:js tests/vitest/plugins-update-queue.test.ts

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Before the Fix

$ npm run test:js tests/vitest/plugins-update-queue.test.ts

> openstation@1.1.6 test:js
> vitest run tests/vitest/plugins-update-queue.test.ts

 RUN  v4.1.5 /Users/pranjalwadhwani/Desktop/desktop-mode
 tests/vitest/plugins-update-queue.test.ts (7 tests | 7 failed) 6ms
     × has a default timeout of 60 seconds 3ms
     × resolves normally when the job completes before timeout 0ms
     × rejects with custom error when the job fails normally 0ms
     × rejects with a timeout error if a job stalls and does not settle 0ms
     × unblocks subsequent queued jobs after a timed-out job 0ms
     × executes jobs in strict FIFO order 0ms
     × recovers from a stalled update: shows failure toast, clears busy state, and re-enables button 0ms

⎯⎯⎯⎯⎯⎯⎯ Failed Tests 7 ⎯⎯⎯⎯⎯⎯⎯

 Test Files  1 failed (1)
      Tests  7 failed (7)
   Duration  1.15s

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After the Fix

$ npm run test:js tests/vitest/plugins-update-queue.test.ts

> openstation@1.1.6 test:js
> vitest run tests/vitest/plugins-update-queue.test.ts

 RUN  v4.1.5 /Users/pranjalwadhwani/Desktop/desktop-mode

 ✓ tests/vitest/plugins-update-queue.test.ts (7 tests) 13ms
   ✓ Plugins update queue (enqueueUpdateJob)
     ✓ has a default timeout of 60 seconds
     ✓ resolves normally when the job completes before timeout
     ✓ rejects with custom error when the job fails normally
     ✓ rejects with a timeout error if a job stalls and does not settle
     ✓ unblocks subsequent queued jobs after a timed-out job
     ✓ executes jobs in strict FIFO order
   ✓ Plugins update action with timeout integration
     ✓ recovers from a stalled update: shows failure toast, clears busy state, and re-enables button

 Test Files  1 passed (1)
      Tests  7 passed (7)
   Duration  1.17s

[AllTerrainDeveloper]

Thanks!