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/shantae_illustrious.json

@@ -0,0 +1,21 @@
+{
+  "look_id": "shantae_illustrious",
+  "look_name": "Shantae Illustrious",
+  "character_id": "shantae",
+  "positive": "shantae, shantae_(series), dark-skinned_female, purple_hair, long_hair, ponytail, pointy_ears, blue_eyes, medium_breasts, purple_choker, harem_pants, red_pants, bracer, hoop_earrings, bandeau, o-ring_top, gold_jewelry, bare_shoulders, jewelry, bracelets",
+  "negative": "light_skin, short_hair, loose_hair, jeans, skirt",
+  "lora": {
+    "lora_name": "Illustrious/Looks/Shantae Illustrious.safetensors",
+    "lora_weight": 0.8,
+    "lora_triggers": "shantae",
+    "lora_weight_min": 0.8,
+    "lora_weight_max": 0.8
+  },
+  "tags": [
+    "shantae",
+    "shantae_(series)",
+    "video_game_character",
+    "anime",
+    "dark-skinned_female"
+  ]
+}