Add MCP HTTP/SSE server and complete n8n integration

Major Changes:
- Implemented MCP HTTP/SSE transport server for n8n and web clients
- Created mcp_server/http_server.py with FastAPI for JSON-RPC 2.0 over HTTP
- Added health check endpoint (/health) for container monitoring
- Refactored mcp-server/ to mcp_server/ (Python module structure)
- Updated Dockerfile.mcp to run HTTP server with health checks

MCP Server Features:
- 7 memory tools exposed via MCP (add, search, get, update, delete)
- HTTP/SSE transport on port 8765 for n8n integration
- stdio transport for Claude Code integration
- JSON-RPC 2.0 protocol implementation
- CORS support for web clients

n8n Integration:
- Successfully tested with AI Agent workflows
- MCP Client Tool configuration documented
- Working webhook endpoint tested and verified
- System prompt optimized for automatic user_id usage

Documentation:
- Created comprehensive Mintlify documentation site
- Added docs/mcp/introduction.mdx - MCP server overview
- Added docs/mcp/installation.mdx - Installation guide
- Added docs/mcp/tools.mdx - Complete tool reference
- Added docs/examples/n8n.mdx - n8n integration guide
- Added docs/examples/claude-code.mdx - Claude Code setup
- Updated README.md with MCP HTTP server info
- Updated roadmap to mark Phase 1 as complete

Bug Fixes:
- Fixed synchronized delete operations across Supabase and Neo4j
- Updated memory_service.py with proper error handling
- Fixed Neo4j connection issues in delete operations

Configuration:
- Added MCP_HOST and MCP_PORT environment variables
- Updated .env.example with MCP server configuration
- Updated docker-compose.yml with MCP container health checks

Testing:
- Added test scripts for MCP HTTP endpoint verification
- Created test workflows in n8n
- Verified all 7 memory tools working correctly
- Tested synchronized operations across both stores

Version: 1.0.0
Status: Phase 1 Complete - Production Ready

🤖 Generated with Claude Code

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

docker/Dockerfile.api

@@ -18,6 +18,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy application code
 COPY config.py .
+COPY memory_cleanup.py .
 COPY api/ ./api/
 
 # Create non-root user

docker/Dockerfile.mcp

@@ -8,6 +8,7 @@ RUN apt-get update && apt-get install -y \
     gcc \
     g++ \
     curl \
+    procps \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements
@@ -18,18 +19,19 @@ RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy application code
 COPY config.py .
-COPY mcp-server/ ./mcp-server/
+COPY memory_cleanup.py .
+COPY mcp_server/ ./mcp_server/
 
 # Create non-root user
 RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
 USER appuser
 
-# Expose port
+# Expose port for HTTP/SSE transport
 EXPOSE 8765
 
-# Health check
+# Health check for HTTP server
 HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
     CMD curl -f http://localhost:8765/health || exit 1
 
-# Run MCP server
-CMD ["python", "-m", "mcp-server.main"]
+# Run MCP HTTP server
+CMD ["python", "-m", "mcp_server.http_server"]