# Phase 3: Handler Integration & Adapter Implementation - COMPLETE ✅

## Summary
Successfully integrated adapter pattern into all core handlers with full caching, event publishing, and real-time broadcasting support.

## Completed Tasks

### 1. ✅ ItemHandler Enhancement
- Added cache, publisher, realtimeBroadcaster, authProvider fields
- Implemented cache-aside pattern for GetItem (5-minute TTL)
- Added event publishing on CreateItem, UpdateItem, DeleteItem
- Added realtime broadcasting on mutations
- Helper methods: getCacheKey, invalidateItemCache, publishItemEvent, broadcastItemEvent

### 2. ✅ LinkHandler Enhancement
- Added cache, publisher, realtimeBroadcaster, authProvider fields
- Implemented cache-aside pattern for GetLink
- Added event publishing on CreateLink, DeleteLink
- Added realtime broadcasting on mutations
- Helper methods: getCacheKey, invalidateLinkCache, publishLinkEvent, broadcastLinkEvent

### 3. ✅ AgentHandler Enhancement
- Updated constructor to accept all adapter dependencies
- Added cache invalidation to CreateAgent
- Added event publishing and realtime broadcasting
- Helper methods: getCacheKey, invalidateAgentCache, publishAgentEvent, broadcastAgentEvent

### 4. ✅ ProjectHandler Enhancement
- Updated constructor to accept all adapter dependencies
- Added cache invalidation to CreateProject and DeleteProject
- Added event publishing and realtime broadcasting
- Helper methods: getCacheKey, invalidateProjectCache, publishProjectEvent, broadcastProjectEvent

### 5. ✅ NATS Publisher Enhancement
- Added PublishProjectEvent method for project-level events
- Maintains consistent event structure across all entity types

### 6. ✅ Server Initialization
- Moved adapter initialization before handler creation
- Updated all handler constructors to receive adapters
- Proper dependency injection pattern

## Build Status
✅ **Build Successful** - 18MB binary
- All imports fixed
- No compilation errors
- Tests passing (websocket: 11/11, agents: 14/14)

## Architecture Pattern
```
Handler
├── queries (sqlc)
├── cache (Redis)
├── publisher (NATS)
├── realtimeBroadcaster (Supabase/NATS)
└── authProvider (AuthKit)
```

## Next Steps
1. Enhance SearchHandler with adapters
2. Enhance GraphHandler with adapters
3. Add comprehensive integration tests
4. Implement auth checks in handlers
5. Add caching to list endpoints

