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>

CLAUDE.md

@@ -83,7 +83,7 @@ The `output_directory` value is used as-is: a relative path like `recordings` re
 
 Two services share a `./recordings` bind mount:
 - `recorder` — runs `isr.py`; volume at `/app/recordings`; mounts `asound.conf` as `/etc/asound.conf`; maps `/dev/snd`; `ipc: host` for dsnoop shared memory; `stop_grace_period: 30s`
-- `web` — runs `web.py`; same `./recordings` read-only at `/recordings`; exposes port 8080
+- `web` — runs `web.py`; same `./recordings` read-only at `/recordings`; exposes port 8080 internally (mapped to 8050 on the host)
 
 **Sharing the soundcard with darkice (or any other ALSA app):**
 ALSA `hw:` devices are exclusive. `asound.conf` defines a `dsnoop` virtual device `shared_mic` that both processes use instead: