Sync third-party and MCP marketplace plugins

Constraint: Public skills are published only by explicit administrator action unless they are tracked third-party market sources.
Confidence: high
Scope-risk: narrow
Directive: Keep private/internal skills out of the public marketplace and preserve normal incremental market Git history.
Tested: Marketplace validation passed.

config/external-sources.lock.json

@@ -24,8 +24,8 @@
       "repo": "https://github.com/nextlevelbuilder/ui-ux-pro-max-skill.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "3da52ff1cab1be91848072ec1be5f493d730fd5f",
-      "syncedAt": "2026-07-10T16:00:00Z"
+      "commit": "0468898265b1552e19f96e9da448e971b6d325fd",
+      "syncedAt": "2026-07-13T16:00:00Z"
     },
     {
       "id": "caveman",
@@ -51,8 +51,8 @@
       "repo": "https://github.com/shadcn-ui/ui.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "3cdaa6eb2f0da27aca8598cb752c32d840e06940",
-      "syncedAt": "2026-07-10T16:00:00Z"
+      "commit": "bb8ba0daceb717eefc3a6ecb3457f28ca770d138",
+      "syncedAt": "2026-07-13T16:00:00Z"
     },
     {
       "id": "frontend-slides",
@@ -87,8 +87,8 @@
       "repo": "https://github.com/hugohe3/ppt-master.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "8f76b6fcef5f24c8716894adeb6fe24c5a418bc3",
-      "syncedAt": "2026-07-12T16:00:00Z"
+      "commit": "465e3b4149b852d33ddd1cb94ac059401fe4e823",
+      "syncedAt": "2026-07-13T16:00:00Z"
     },
     {
       "id": "next-skills",
@@ -96,8 +96,8 @@
       "repo": "https://github.com/vercel/next.js.git",
       "ref": "canary",
       "adapter": "skill-collection",
-      "commit": "31541356c21bc389150b958379acb26aa7e97b22",
-      "syncedAt": "2026-07-12T16:00:00Z"
+      "commit": "41b823880d688b3e9f9aae3323b08ddd457240c2",
+      "syncedAt": "2026-07-13T16:00:00Z"
     }
   ]
 }