Implement session management to maintain conversation history and entity
context across page refreshes. Sessions are stored in-memory and include:
- Conversation history (stored server-side, restored on reconnect)
- Entity snapshots synced before each message for LLM context
- Auto-injection of diagram state into Claude's system prompt
Key changes:
- Add session store service with create/resume/sync/clear operations
- Add session API endpoints (/api/session/*)
- Update Claude API to inject entity context and manage history
- Update ChatPanel to initialize sessions and sync entities
- Add debug endpoint for inspecting session state
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add Express server with vite-express for combined frontend/API serving
- Create modular API route structure (server/api/)
- Implement Claude API proxy with proper header injection
- Support split deployment via API_ONLY and ALLOWED_ORIGINS env vars
- Remove Claude proxy from Vite config (now handled by Express)
- Add migration plan documentation
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
