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/tifalockhartff7festivebluedaffodil_illu_dwnsty_000008.json

@@ -0,0 +1,22 @@
+{
+  "look_id": "tifalockhartff7festivebluedaffodil_illu_dwnsty_000008",
+  "look_name": "Tifalockhartff7Festivebluedaffodil Illu Dwnsty 000008",
+  "character_id": "tifa_lockhart",
+  "positive": "tifa_lockhart, long_hair, black_hair, red_eyes, blue_dress, blue_flower, hair_flower, festive_dress, very_long_hair",
+  "negative": "(lowres:1.2), (worst quality:1.4), (low quality:1.4), (bad anatomy:1.4), multiple views, jpeg artifacts, artist name, young",
+  "lora": {
+    "lora_name": "Illustrious/Looks/TifaLockhartFF7FestiveBlueDaffodil_Illu_Dwnsty-000008.safetensors",
+    "lora_weight": 0.8,
+    "lora_triggers": "festivebluedaffodiltflckhrt",
+    "lora_weight_min": 0.8,
+    "lora_weight_max": 0.8
+  },
+  "tags": [
+    "tifa_lockhart",
+    "blue_dress",
+    "black_hair",
+    "long_hair",
+    "flower",
+    "red_eyes"
+  ]
+}