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/Yeachan-Heo/oh-my-codex.git",
       "ref": "main",
       "adapter": "codex-plugin",
-      "commit": "2da36489cfa07ef1df802f01865e7d959d36f236",
-      "syncedAt": "2026-09-03T09:20:38Z"
+      "commit": "afc3980e024cb31c74ad32e91ed4ac55051f16e9",
+      "syncedAt": "2026-09-06T15:59:59Z"
     },
     {
       "id": "ui-ux-pro-max",
@@ -33,8 +33,8 @@
       "repo": "https://github.com/nextlevelbuilder/ui-ux-pro-max-skill.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "f3ac195224eac1eb0dfe1a3059c2a6add78ffbe3",
-      "syncedAt": "2026-09-03T16:00:00Z"
+      "commit": "4aad0584d92131626b16d4ff4d77f0455385013c",
+      "syncedAt": "2026-09-06T15:59:59Z"
     },
     {
       "id": "caveman",
@@ -60,8 +60,8 @@
       "repo": "https://github.com/shadcn-ui/ui.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "7c9eaba1c0a6404c990c144a654792e3313c650d",
-      "syncedAt": "2026-09-04T16:00:00Z"
+      "commit": "5c7072da672b0048bc6771e3204063a2537df91a",
+      "syncedAt": "2026-09-06T15:59:59Z"
     },
     {
       "id": "frontend-slides",
@@ -132,8 +132,8 @@
       "repo": "https://github.com/vercel/next.js.git",
       "ref": "canary",
       "adapter": "skill-collection",
-      "commit": "6685283fe8533a469ee1a9455e2bc4047c7453cb",
-      "syncedAt": "2026-09-05T16:00:00Z"
+      "commit": "4fed8eaf197aaa60fd85371352482199a4c2107f",
+      "syncedAt": "2026-09-06T15:59:59Z"
     },
     {
       "id": "shuorenhua",