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/ssb4samusillustrious_1407413.json

@@ -0,0 +1,27 @@
+{
+  "look_id": "ssb4samusillustrious_1407413",
+  "look_name": "Ssb4Samusillustrious 1407413",
+  "character_id": "samus_aran",
+  "positive": "samus_aran, zero_suit, blonde_hair, blue_eyes, ponytail, mole_under_mouth, blue_bodysuit, bracelet, high_heels, holding_gun, gun",
+  "negative": "armor, helmet, power_suit, short_hair",
+  "lora": {
+    "lora_name": "Illustrious/Looks/SSB4SamusIllustrious_1407413.safetensors",
+    "lora_weight": 1.0,
+    "lora_triggers": "SSB4ZSS",
+    "lora_weight_min": 1.0,
+    "lora_weight_max": 1.0
+  },
+  "tags": [
+    "samus_aran",
+    "zero_suit",
+    "blonde_hair",
+    "blue_eyes",
+    "ponytail",
+    "mole_under_mouth",
+    "blue_bodysuit",
+    "bracelet",
+    "high_heels",
+    "holding_gun",
+    "gun"
+  ]
+}