jknapp 64c864b0f0 Fix multi-user server sync performance and integration ...

Major fixes:
- Integrated ServerSyncClient into GUI for actual multi-user sync
- Fixed CUDA device display to show actual hardware used
- Optimized server sync with parallel HTTP requests (5x faster)
- Fixed 2-second DNS delay by using 127.0.0.1 instead of localhost
- Added comprehensive debugging and performance logging

Performance improvements:
- HTTP requests: 2045ms → 52ms (97% faster)
- Multi-user sync lag: ~4s → ~100ms (97% faster)
- Parallel request processing with ThreadPoolExecutor (3 workers)

New features:
- Room generator with one-click copy on Node.js landing page
- Auto-detection of PHP vs Node.js server types
- Localhost warning banner for WSL2 users
- Comprehensive debug logging throughout sync pipeline

Files modified:
- gui/main_window_qt.py - Server sync integration, device display fix
- client/server_sync.py - Parallel HTTP, server type detection
- server/nodejs/server.js - Room generator, warnings, debug logs

Documentation added:
- PERFORMANCE_FIX.md - Server sync optimization details
- FIX_2_SECOND_HTTP_DELAY.md - DNS/localhost issue solution
- LATENCY_GUIDE.md - Audio chunk duration tuning guide
- DEBUG_4_SECOND_LAG.md - Comprehensive debugging guide
- SESSION_SUMMARY.md - Complete session summary

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-12-26 16:44:55 -08:00

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