feat: Music Assistant, Claude primary LLM, model tag in chat, setup.sh rewrite

- Deploy Music Assistant on Pi (10.0.0.199:8095) with host networking for
  Chromecast mDNS discovery, Spotify + SMB library support
- Switch primary LLM from Ollama to Claude Sonnet 4 (Anthropic API),
  local models remain as fallback
- Add model info tag under each assistant message in dashboard chat,
  persisted in conversation JSON
- Rewrite homeai-agent/setup.sh: loads .env, injects API keys into plists,
  symlinks plists to ~/Library/LaunchAgents/, smoke tests services
- Update install_service() in common.sh to use symlinks instead of copies
- Open UFW ports on Pi for Music Assistant (8095, 8097, 8927)
- Add ANTHROPIC_API_KEY to openclaw + bridge launchd plists

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

homeai-agent/launchd/com.homeai.openclaw.plist

@@ -30,6 +30,18 @@
     <string>eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJmZGQ1NzZlYWNkMTU0ZTY2ODY1OTkzYTlhNTIxM2FmNyIsImlhdCI6MTc3MjU4ODYyOCwiZXhwIjoyMDg3OTQ4NjI4fQ.CTAU1EZgpVLp_aRnk4vg6cQqwS5N-p8jQkAAXTxFmLY</string>
     <key>GAZE_API_KEY</key>
     <string>e63401f17e4845e1059f830267f839fe7fc7b6083b1cb1730863318754d799f4</string>
+    <key>N8N_URL</key>
+    <string>http://localhost:5678</string>
+    <key>N8N_API_KEY</key>
+    <string></string>
+    <key>GITEA_URL</key>
+    <string>http://10.0.0.199:3000</string>
+    <key>GITEA_TOKEN</key>
+    <string></string>
+    <key>ANTHROPIC_API_KEY</key>
+    <string>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</string>
+    <key>OPENAI_API_KEY</key>
+    <string></string>
   </dict>
 
   <key>RunAtLoad</key>