Dockerize: one-command stack with auto Ollama model pull

`docker compose up -d --build` now brings up the whole thing automatically —
no host setup needed:

- All-in-one javis image: TigerVNC+XFCE desktop, Chrome, Python brain bridge,
  Node/bun bot, managed by supervisord (verified: all 6 programs RUNNING).
- ollama service + one-shot ollama-init that auto-pulls chat+embed models
  (verified end-to-end; `ollama list` shows pulled models).
- Discord token deferred: without DISCORD_BOT_TOKEN the desktop, bridge,
  Ollama and models all run; only the bot waits (no crash loop).
- Slim container deps (bridge/requirements-bridge.txt) drop the unused
  PyQt6/torch/chatterbox/sounddevice stack. Piper voice + Whisper models
  auto-download into named volumes.
- Configurable host ports (VNC_PORT/NOVNC_PORT/BRIDGE_PORT) to avoid clashing
  with a host VNC already on 5901. Bridge binds 0.0.0.0 in-container.

Verified: image builds; brain imports; bridge /health 200; noVNC 200;
X display :1 @1920x1080; auto-pull completes; supervisorctl status all RUNNING.

docker/jarvis-config.template.json

@@ -0,0 +1,18 @@
+{
+  "db_path": "${JARVIS_DB_PATH}",
+  "sqlite_vss_path": null,
+  "ollama_base_url": "${OLLAMA_BASE_URL}",
+  "ollama_embed_model": "${OLLAMA_EMBED_MODEL}",
+  "ollama_chat_model": "${OLLAMA_CHAT_MODEL}",
+  "tts_enabled": true,
+  "tts_engine": "piper",
+  "tts_piper_model_path": "${TTS_PIPER_MODEL_PATH}",
+  "whisper_model": "${WHISPER_MODEL}",
+  "whisper_backend": "faster-whisper",
+  "whisper_device": "${WHISPER_DEVICE}",
+  "whisper_compute_type": "${WHISPER_COMPUTE_TYPE}",
+  "location_enabled": true,
+  "web_search_enabled": true,
+  "wikipedia_fallback_enabled": true,
+  "mcps": {}
+}