feat: keep screen awake on mobile devices during active calls - #722
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Request a screen wake lock while the user is in at least one call so mobile devices don't sleep and drop the call. The browser releases the lock when the page is hidden, so it is re-acquired when the page becomes visible again. Browsers without the Wake Lock API are unaffected. Co-Authored-By: Claude Opus 5.5 <[email protected]>
birme
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Oct 5, 2026
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LGTM — reviewed as part of daily-backlog-pr Phase 3.5 orphan-PR housekeeping (full code-reviewer pass on a clean clone; npm ci/lint/typecheck/test all green, 327 tests incl. 5 new wake-lock tests).
Correct Wake Lock API usage, graceful feature-detection, cleanup on unmount, re-acquire on visibilitychange, and a StrictMode-safe cancelled guard. No blocking issues.
One non-blocking note for a follow-up (not gating this merge):
src/hooks/use-wake-lock.ts:16— under two visibilitychange events firing before the firstrequest("screen")resolves, an earlier sentinel could leak (only the last is stored). Normal visible/hidden transitions fire once each, so impact is low; anacquiringboolean before the await would close it. A test for the request-rejectscatchbranch would round out error-path coverage.
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Request a screen wake lock while the user is in at least one call so mobile devices don't sleep and drop the call. The browser releases the lock when the page is hidden, so it is re-acquired when the page becomes visible again. Browsers without the Wake Lock API are unaffected.