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/ffscarlet_illu_nvwls_v2.json

@@ -0,0 +1,20 @@
+{
+  "look_id": "ffscarlet_illu_nvwls_v2",
+  "look_name": "Ffscarlet Illu Nvwls V2",
+  "character_id": "scarlet_ff7",
+  "positive": "scarlet_(ff7), scrl, blonde_hair, folded_ponytail, blue_eyes, lipstick, makeup, large_breasts, cleavage, red_vest, red_skirt, long_skirt, side_slit, sleeveless, lace_trim, buttons, bracelet, earrings, pendant, jewelry, black_thighhighs, red_shoes, high_heels, red_nails",
+  "negative": "short_hair, flat_chest",
+  "lora": {
+    "lora_name": "Illustrious/Looks/ffscarlet-illu-nvwls-v2.safetensors",
+    "lora_weight": 1.0,
+    "lora_triggers": "scrl",
+    "lora_weight_min": 1.0,
+    "lora_weight_max": 1.0
+  },
+  "tags": [
+    "anime",
+    "final_fantasy_vii",
+    "woman",
+    "video_game_character"
+  ]
+}