fix: address PR #632 review comments

- Update stale httpx reference to niquests in calendar.py type comment
- Replace inline inspect.isawaitable with _maybe_await helper in tests
- Fix incorrect port number in docker-compose unstructured comment
- Remove commented-out smithery service block (dead code)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -67,7 +67,7 @@ services:
     ports:
       - 127.0.0.1:8005:8000
     # Unstructured API runs on port 8000 internally
-    # We expose it on 8002 externally to avoid conflict
+    # We expose it on 8005 externally to avoid conflict
     profiles:
       - unstructured
 
@@ -324,26 +324,6 @@ services:
     profiles:
       - login-flow
 
-  # Smithery stateless deployment mode (ADR-016)
-  # Test with: docker compose --profile smithery up smithery
-  # Then: curl http://localhost:8081/.well-known/mcp-config
-  #smithery:
-    #build:
-      #context: .
-      #dockerfile: Dockerfile.smithery
-    #restart: always
-    #depends_on:
-      #app:
-        #condition: service_healthy
-    #ports:
-      #- 127.0.0.1:8081:8081
-    #environment:
-      #- SMITHERY_DEPLOYMENT=true
-      #- ENABLE_SEMANTIC_SEARCH=false
-      #- PORT=8081
-    #profiles:
-      #- smithery
-
   qdrant:
     image: docker.io/qdrant/qdrant:v1.17.0@sha256:f1c7272cdac52b38c1a0e89313922d940ba50afd90d593a1605dbbc214e66ffb
     restart: always