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/kda_kaisaillulora.json

@@ -0,0 +1,21 @@
+{
+  "look_id": "kda_kaisaillulora",
+  "look_name": "Kda Kaisaillulora",
+  "character_id": "k/da_all_out_kai'sa",
+  "positive": "k/da_(league_of_legends), ponytail, multicolored_hair, hair_ornament, earrings, collar, crop_top, bare_shoulders, midriff, detached_sleeves, single_fingerless_glove, bracelet, belt, pants, high_heel_boots, mechanical_wings, floating_object",
+  "negative": "lowres, bad_anatomy, bad_hands, text, error, missing_fingers, extra_digit, fewer_digits, cropped, worst_quality, low_quality, normal_quality, jpeg_artifacts, signature, watermark, username, blurry",
+  "lora": {
+    "lora_name": "Illustrious/Looks/KDA KaisaIlluLoRA.safetensors",
+    "lora_weight": 0.8,
+    "lora_triggers": "allout, kasa",
+    "lora_weight_min": 0.8,
+    "lora_weight_max": 0.8
+  },
+  "tags": [
+    "league_of_legends",
+    "k/da",
+    "kai'sa",
+    "all_out",
+    "game_character"
+  ]
+}