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/avril_lavigne___il_xl.json

@@ -0,0 +1,28 @@
+{
+  "look_id": "avril_lavigne___il_xl",
+  "look_name": "Avril Lavigne Il Xl",
+  "character_id": "",
+  "positive": "1girl, solo, blonde_hair, long_hair, straight_hair, blue_eyes, eyeliner, black_nails, striped_arm_warmers, tank_top, black_shirt, necktie, bracelet, playing_guitar, holding_guitar, concert, punk, photorealistic, realistic, film_grain, depth_of_field, pastel_colors",
+  "negative": "bad_anatomy, bad_hands, blurry, sketch, 3d, lowres, traditional_media, painting, cartoon, comic, monochrome, greyscale",
+  "lora": {
+    "lora_name": "Illustrious/Looks/Avril_Lavigne_-_IL_XL.safetensors",
+    "lora_weight": 1.0,
+    "lora_triggers": "avril lavigne",
+    "lora_weight_min": 1.0,
+    "lora_weight_max": 1.0
+  },
+  "tags": [
+    "blonde_hair",
+    "long_hair",
+    "straight_hair",
+    "blue_eyes",
+    "eyeliner",
+    "black_nails",
+    "striped_arm_warmers",
+    "punk",
+    "playing_guitar",
+    "concert",
+    "photorealistic",
+    "realistic"
+  ]
+}