Double-click fix:
- After awaiting the pause, optimistically set current_block_id and
isPaused on the store so the UI switches instantly. The subsequent
WS start event confirms the state without requiring a second click.
TV elapsed reset fix:
- The TV's local cache was empty for blocks paused before it connected,
so returning to those blocks showed 0 elapsed.
- Backend now computes the block's accumulated elapsed from previous
start/pause cycles and includes it as block_elapsed_seconds in the
'start' WS event payload.
- All clients (Dashboard and TV) now use this authoritative server value
instead of relying solely on the local cache.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
derekc
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