Re-review confirmation: All review findings addressed in 62f7080

[Copilot]

Verified that commit 62f7080 properly addresses all 5 automated review findings from the initial PR submission.

Changes verified

• Vote threshold documentation - Comment now reflects config-driven vote_threshold_ratio and vote_min_threshold instead of hardcoded "30%"
• Phase update deduplication - check_game_end accepts broadcast_phase_update flag; phase_tick calls with false to prevent duplicate phase:update emissions on timeout transitions
• Chase event cleanup - Removed unused state extractor, added deprecation comment explaining backward-compat event registration
• Guest auth security hardening - Server now issues UUID-based guest_device:* tokens; client-provided device_id no longer accepted as identity key
• PR description update - Clarified that n8n workflow changes were pre-existing on this branch

// Before: duplicate phase:update when timeout triggers game end
check_game_end(&socket, &state, &room).await;

// After: phase_tick controls broadcast timing
check_game_end(socket, state, &room, false).await;

No new code changes required - this PR simply confirms the review findings were resolved.

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