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/detailers/unagedown_v20.json

@@ -1,21 +1,12 @@
 {
   "detailer_id": "unagedown_v20",
   "detailer_name": "Unagedown V20",
-  "prompt": [
-    "mature female",
-    "adult",
-    "woman",
-    "older",
-    "mature",
-    "25 years old",
-    "detailed face",
-    "sharp features",
-    "fully developed"
-  ],
-  "focus": { "body": "", "detailer": "" },
+  "prompt": "mature_female",
   "lora": {
     "lora_name": "Illustrious/Detailers/unagedown_V20.safetensors",
-    "lora_weight": 1.0,
-    "lora_triggers": "unagedown_V20"
+    "lora_weight": 0.85,
+    "lora_weight_min": 0.7,
+    "lora_weight_max": 1.0,
+    "lora_triggers": "unagedown"
   }
 }