docs: update frank-large to stock llama.cpp UD-Q8_K_XL + DFlash2

- AGENTS.md: fleet topology, intro, frank-large section, text-only note,
  benchmarking policy, runbook index (new runbook active; Kairic Edge
  retired as rollback target)
- homepage services.json: frank-large description -> UD-Q8_K_XL, 31.5 GiB,
  DFlash2 spec decode
- homepage services.json: ComfyUI url + showLink (complete prior edit)

Co-Authored-By: Claude <noreply@anthropic.com>

shared/homepage/services.json

@@ -267,7 +267,7 @@
     "name": "frank-large",
     "category": "user",
     "section": "AI",
-    "description": "Qwen3.8-27B (IU4/W4A4, 26 GiB) — 262k-token context, one conversation at a time. The big brain: long, thoughtful text conversations. Text only; it cannot see images.",
+    "description": "Qwen3.8-27B (UD-Q8_K_XL, 31.5 GiB) — 262k-token context, one conversation at a time. The big brain: long, thoughtful text conversations, DFlash2 spec decode. Text only; it cannot see images.",
     "url": "",
     "docs": "/docs#models",
     "probe": "127.0.0.1:7770",
@@ -412,11 +412,11 @@
     "category": "admin",
     "section": "AI",
     "description": "Node-based image generation.",
-    "url": "",
+    "url": "http://comfyui.franksdank.cloud:8188",
     "docs": "",
     "probe": "127.0.0.1:8188",
     "method": "http",
     "wip": false,
-    "showLink": false
+    "showLink": true
   }
 ]