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/shigure_ui_ill_1398309.json

@@ -0,0 +1,32 @@
+{
+  "look_id": "shigure_ui_ill_1398309",
+  "look_name": "Shigure Ui Ill 1398309",
+  "character_id": "",
+  "positive": "shigure_ui_(vtuber), brown_hair, green_eyes, short_hair, twintails, hair_intakes, pom_pom_hair_ornament, bangs, school_uniform, red_bow, white_shirt, pinafore_dress, black_dress, sleeveless_dress, kneehighs, flat_chest",
+  "negative": "long_hair, mature_female",
+  "lora": {
+    "lora_name": "Illustrious/Looks/Shigure Ui_ill_1398309.safetensors",
+    "lora_weight": 1.0,
+    "lora_triggers": "UiShigure",
+    "lora_weight_min": 1.0,
+    "lora_weight_max": 1.0
+  },
+  "tags": [
+    "shigure_ui_(vtuber)",
+    "brown_hair",
+    "green_eyes",
+    "short_hair",
+    "twintails",
+    "hair_intakes",
+    "pom_pom_hair_ornament",
+    "bangs",
+    "school_uniform",
+    "red_bow",
+    "white_shirt",
+    "pinafore_dress",
+    "black_dress",
+    "sleeveless_dress",
+    "kneehighs",
+    "flat_chest"
+  ]
+}