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": "318e0b2e4069b578c729228455328a1ca88f640d",
-      "syncedAt": "2026-06-25T16:00:00Z"
+      "commit": "9fd25fe07e46ae444edc356e62fe913347ab9e23",
+      "syncedAt": "2026-06-26T15:59:59Z"
     },
     {
       "id": "shadcn",
@@ -33,8 +33,8 @@
       "repo": "https://github.com/shadcn-ui/ui.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "35983528c233250b990f6172f1a60df228409a37",
-      "syncedAt": "2026-06-25T16:00:00Z"
+      "commit": "c520191cd4c36760ed425b650e139fe6d7e29038",
+      "syncedAt": "2026-06-26T15:59:59Z"
     },
     {
       "id": "frontend-slides",
@@ -69,8 +69,8 @@
       "repo": "https://github.com/hugohe3/ppt-master.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "850ad1be2474f5d8930fa2b61105453b99391600",
-      "syncedAt": "2026-06-25T16:00:00Z"
+      "commit": "47f5051845777839ec29e8d67dd12ae68671854a",
+      "syncedAt": "2026-06-26T15:59:59Z"
     },
     {
       "id": "next-skills",
@@ -78,8 +78,8 @@
       "repo": "https://github.com/vercel/next.js.git",
       "ref": "canary",
       "adapter": "skill-collection",
-      "commit": "b0dde9cf271e07b2380575be766ef8f5e451e857",
-      "syncedAt": "2026-06-25T16:00:00Z"
+      "commit": "6c22d02ce0c1ba3b8773b314756f388d8f7cbd1a",
+      "syncedAt": "2026-06-26T15:59:59Z"
     }
   ]
 }