- ServiceContext: service bundle for single workspace context
- Encapsulates all session-data services (ProjectScanner, SessionParser, SubagentResolver, ChunkBuilder, DataCache, FileWatcher)
- Manages service lifecycle (start, stop, dispose)
- Proper dependency chain wiring
- ServiceContextRegistry: coordinator for all contexts
- Manages Map of contexts with active tracking
- Enforces local context permanence (cannot be destroyed)
- Context switching (stops old watcher, starts new watcher)
- Safe disposal of SSH contexts
- Updated barrel exports in infrastructure/index.ts
