fix: resolve NameError on startup, move analyses into recordings, remap port to 8050

- web.py: Python class bodies can't close over a name they also assign;
  use a temporary alias _analyses_dir to break the self-reference
- docker-compose.yml: mount ./recordings/analyses:/recordings/analyses
  instead of a separate ./analyses volume so cache lives inside recordings;
  remove --analyses-dir flag (default now resolves correctly); remap
  external port 8080→8050 for reverse proxy
- README.md / CLAUDE.md: update Docker port references to 8050

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -16,8 +16,8 @@ services:
     build: .
     volumes:
       - ./recordings:/recordings:ro
-      - ./analyses:/analyses
+      - ./recordings/analyses:/recordings/analyses
     ports:
-      - "8080:8080"
+      - "8050:8080"
     restart: unless-stopped
-    command: ["python", "web.py", "--dir", "/recordings", "--analyses-dir", "/analyses"]
+    command: ["python", "web.py", "--dir", "/recordings"]