- Add provider adapter layer (server/providers/) with registry pattern
- Claude, Cursor, Codex, Gemini adapters normalize native formats to NormalizedMessage
- Shared types.js defines ProviderAdapter interface and message kinds
- Registry enables polymorphic provider lookup
- Add unified REST endpoint: GET /api/sessions/:id/messages?provider=...
- Replaces four provider-specific message endpoints with one
- Delegates to provider adapters via registry
- Add frontend session-keyed store (useSessionStore)
- Per-session Map with serverMessages/realtimeMessages/merged
- Dedup by ID, stale threshold for re-fetch, background session accumulation
- No localStorage for messages — backend JSONL is source of truth
- Add normalizedToChatMessages converter (useChatMessages)
- Converts NormalizedMessage[] to existing ChatMessage[] UI format
- Wire unified store into ChatInterface, useChatSessionState, useChatRealtimeHandlers
- Session switch uses store cache for instant render
- Background WebSocket messages routed to correct session slot
Return success with empty servers array from the config read endpoint
when no config file exists, so the frontend doesn't fall through to
the CLI list endpoint which attempts to spawn the codex binary.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
