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/jn_zelda_tp_illus.json

@@ -0,0 +1,21 @@
+{
+  "look_id": "jn_zelda_tp_illus",
+  "look_name": "Jn Zelda Tp Illus",
+  "character_id": "",
+  "positive": "princess_zelda, 1girl, solo, brown_hair, long_hair, braid, pointy_ears, crown, jewelry, white_dress, purple_tabard, shoulder_armor, white_gloves, hair_ornament",
+  "negative": "3d, cropped, loli, censored, monochrome, sketch, rough_lines, bad_proportions, text, signature, watermark, low_quality",
+  "lora": {
+    "lora_name": "Illustrious/Looks/JN_Zelda_TP_Illus.safetensors",
+    "lora_weight": 0.8,
+    "lora_triggers": "Zelda TP, Main Outfit",
+    "lora_weight_min": 0.8,
+    "lora_weight_max": 0.8
+  },
+  "tags": [
+    "princess_zelda",
+    "the_legend_of_zelda:_twilight_princess",
+    "fantasy",
+    "nintendo",
+    "elf"
+  ]
+}