Add danbooru-mcp auto-start, git sync, status API endpoints, navbar status indicators, and LLM format retry

- app.py: add subprocess import; add _ensure_mcp_repo() to clone/pull
  danbooru-mcp from https://git.liveaodh.com/aodhan/danbooru-mcp into
  tools/danbooru-mcp/ at startup; add ensure_mcp_server_running() which
  calls _ensure_mcp_repo() then starts the Docker container if not running;
  add GET /api/status/comfyui and GET /api/status/mcp health endpoints;
  fix call_llm() to retry up to 3 times on unexpected response format
  (KeyError/IndexError), logging the raw response and prompting the LLM
  to respond with valid JSON before each retry
- templates/layout.html: add ComfyUI and MCP status dot indicators to
  navbar; add polling JS that checks both endpoints on load and every 30s
- static/style.css: add .service-status, .status-dot, .status-ok,
  .status-error, .status-checking styles and status-pulse keyframe animation
- .gitignore: add tools/ to exclude the cloned danbooru-mcp repo

data/looks/nessabeaixl_v2.json

@@ -0,0 +1,22 @@
+{
+  "look_id": "nessabeaixl_v2",
+  "look_name": "Nessabeaixl V2",
+  "character_id": "nessa",
+  "positive": "2girls, nessa_(pokemon), bea_(pokemon), dark_skin, grey_hair, short_hair, blue_hair, long_hair, gym_uniform, grey_eyes, blue_eyes",
+  "negative": "braid, symbol, print shirt, see through, child, young, blurry, lowres, worst quality, low quality, bad anatomy, bad hands, multiple views, jpeg artifacts, signature, watermark, text, logo",
+  "lora": {
+    "lora_name": "Illustrious/Looks/NessaBeaIXL_v2.safetensors",
+    "lora_weight": 1.0,
+    "lora_triggers": "zzBea, zzNessa",
+    "lora_weight_min": 1.0,
+    "lora_weight_max": 1.0
+  },
+  "tags": [
+    "nessa_(pokemon)",
+    "bea_(pokemon)",
+    "2girls",
+    "dark_skin",
+    "gym_uniform",
+    "pokemon_sword_and_shield"
+  ]
+}