PHASE 2 COMPLETE: REST API Implementation

✅ Fully functional FastAPI server with comprehensive features:

🏗️ Architecture:
- Complete API design documentation
- Modular structure (models, auth, service, main)
- OpenAPI/Swagger auto-documentation

🔧 Core Features:
- Memory CRUD endpoints (POST, GET, DELETE)
- User management and statistics
- Search functionality with filtering
- Admin endpoints with proper authorization

🔐 Security & Auth:
- API key authentication (Bearer token)
- Rate limiting (100 req/min configurable)
- Input validation with Pydantic models
- Comprehensive error handling

🧪 Testing:
- Comprehensive test suite with automated server lifecycle
- Simple test suite for quick validation
- All functionality verified and working

🐛 Fixes:
- Resolved Pydantic v2 compatibility (.dict() → .model_dump())
- Fixed missing dependencies (posthog, qdrant-client, vecs, ollama)
- Fixed mem0 package version metadata issues

📊 Performance:
- Async operations for scalability
- Request timing middleware
- Proper error boundaries
- Health monitoring endpoints

🎯 Status: Phase 2 100% complete - REST API fully functional

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

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

mem0/__init__.py

@@ -1,6 +1,9 @@
 import importlib.metadata
 
-__version__ = importlib.metadata.version("mem0ai")
+try:
+    __version__ = importlib.metadata.version("mem0ai")
+except importlib.metadata.PackageNotFoundError:
+    __version__ = "1.0.0-dev"
 
 from mem0.client.main import AsyncMemoryClient, MemoryClient  # noqa
 from mem0.memory.main import AsyncMemory, Memory  # noqa