- Sync channels in parallel with concurrency limit of 3 instead of sequentially
- Reduces backlog sync time from O(n) to O(n/3) for n channels
- Prevents overwhelming Discord API with too many concurrent requests
- Maintains per-channel message batching for memory efficiency
This resolves:
- Slow backlog sync performance
- Sequential channel processing bottleneck
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Fix client startup order: fetch/apply server UI state BEFORE loadGuilds() to prevent overwriting persisted state with default guild
- Remove auto-post of first guild in loadGuilds() — let server state drive selection
- Refactor collectWatchableChannels() to collect text channels fast first, then discover threads in parallel with 5s per-channel timeout and 30s overall timeout to prevent blocking message sync
- Ignore /favicon.ico 404 in error logging to reduce noise
Fixes:
- UI state now persists across restart (was being overwritten by client startup race)
- Backlog sync no longer hangs on thread discovery (was blocking before message sync)
- Cleaner logs without favicon 404 errors
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
