chore(homepage): retire the unreferenced dankserver registry copy

shared/homepage/dankserver.services.json was read by nothing: no reference
anywhere in the repo, and deploy_homepage never copies it. It sat beside the
real registry looking like a second live card set, which is exactly how a
future agent gets misled about what the page renders. Moved to the gitignored
shared/homepage/.AGENTTRASH/ beside it, so it stays recoverable.

shared/homepage/dankserver.services.json

@@ -1,35 +0,0 @@
-{
-  "host": "dankserver",
-  "services": [
-    {
-      "name": "Homepage",
-      "url": "/",
-      "description": "This page. Password-protected service index.",
-      "docs": "serverAppConfigs-docs/Infrastructure/Homepage.md"
-    },
-    {
-      "name": "RomM",
-      "url": "http://romm.franksdank.cloud",
-      "description": "Retro game manager and player for the ROM collection.",
-      "docs": "serverAppConfigs-docs/Dankserver/RomM.md"
-    },
-    {
-      "name": "Copyparty",
-      "url": "http://files.franksdank.cloud",
-      "description": "High-speed file sharing and streaming server.",
-      "docs": "serverAppConfigs-docs/Dankserver/Copyparty.md"
-    },
-    {
-      "name": "Calibre-Web",
-      "url": "http://books.franksdank.cloud",
-      "description": "E-book library browser and reader.",
-      "docs": "serverAppConfigs-docs/Dankserver/Calibre-Web.md"
-    },
-    {
-      "name": "Plex",
-      "url": "http://plex.franksdank.cloud/web/index.html",
-      "description": "Media server (existing host service, proxied).",
-      "docs": "serverAppConfigs-docs/Dankserver/Dankserver Stack.md"
-    }
-  ]
-}