Add /health endpoint for Docker healthchecks

- Create wrapper Starlette app with health route + FastMCP mount
- Pass FastMCP lifespan to parent app for proper session management
- Health returns JSON with status, version, timestamp, transport
- Use uvicorn directly for better ASGI integration

src/mcwaddams/server.py

@@ -12,6 +12,7 @@ Architecture uses official FastMCP MCPMixin pattern for clean separation of conc
 
 import os
 import tempfile
+from datetime import datetime, timezone
 
 from fastmcp import FastMCP
 from fastmcp.prompts import Prompt
@@ -568,6 +569,11 @@ def main():
 
     if transport == "streamable-http":
         # HTTP transport for hosted/Docker mode
+        import uvicorn
+        from starlette.applications import Starlette
+        from starlette.responses import JSONResponse
+        from starlette.routing import Route, Mount
+
         host = os.environ.get("MCP_HOST", "0.0.0.0")
         port = int(os.environ.get("MCP_PORT", "8000"))
 
@@ -577,17 +583,37 @@ def main():
         except Exception:
             pkg_version = "0.1.0"
 
+        # Health check endpoint
+        async def health_check(request):
+            return JSONResponse({
+                "status": "healthy",
+                "service": "mcwaddams",
+                "version": pkg_version,
+                "timestamp": datetime.now(timezone.utc).isoformat(),
+                "transport": "streamable-http",
+            })
+
+        # Get FastMCP's HTTP app
+        mcp_app = app.http_app()
+
+        # Create wrapper app with health endpoint + MCP routes
+        # IMPORTANT: Must pass mcp_app.lifespan to initialize task groups
+        wrapper_app = Starlette(
+            routes=[
+                Route("/health", health_check, methods=["GET"]),
+                Mount("/", app=mcp_app),  # Mount MCP at root (serves /mcp)
+            ],
+            lifespan=mcp_app.lifespan,  # Required for FastMCP session management
+        )
+
         print(f"🖨️  mcwaddams v{pkg_version}")
         print(f"📋 MCP Office Tools - Document Extraction Server")
         print(f"🌐 Starting streamable-http transport on {host}:{port}")
         print(f"   Endpoint: http://{host}:{port}/mcp")
+        print(f"   Health:   http://{host}:{port}/health")
         print()
 
-        app.run(
-            transport="streamable-http",
-            host=host,
-            port=port,
-        )
+        uvicorn.run(wrapper_app, host=host, port=port, log_level="info")
     else:
         # Default stdio transport for local CLI usage
         # CRITICAL: show_banner=False is required for stdio transport!