Add Sonarr for Jellyfin-compliant TV show organization

Coordinates with qBittorrent to auto-rename/organize new TV downloads
into the Show Name (Year)/Season NN/... layout Jellyfin needs, and
provides the same import engine for migrating the existing library.

Claude-Session: https://claude.ai/code/session_01HZQK6jHmdTpFjFZM8FUnqA

sonarr/docker-compose.yaml

@@ -0,0 +1,26 @@
+volumes:
+  nas_media:
+    external: true
+    name: nas_media
+services:
+  sonarr:
+    container_name: sonarr
+    image: lscr.io/linuxserver/sonarr:latest
+    restart: unless-stopped
+    environment:
+      - PUID=1000
+      - PGID=1000
+      - TZ=America/New_York
+    ports:
+      - 8989:8989/tcp
+    volumes:
+      - /srv/sonarr/config:/config
+      - nas_media:/data
+    networks:
+      - default
+      - npm-network
+
+networks:
+  default:
+  npm-network:
+    external: true