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

@@ -42,8 +42,8 @@
       "repo": "https://github.com/vercel-labs/skills.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "d8eca76d5dbe47df2d146d036e32534b74ece57a",
-      "syncedAt": "2026-10-28T01:57:49Z"
+      "commit": "699d35b21bd3c97dbc0edeae062b2698898bb2e5",
+      "syncedAt": "2026-10-28T15:59:59Z"
     },
     {
       "id": "generate-agents-md",
@@ -94,10 +94,10 @@
       "id": "dingtalk-workspace",
       "pluginName": "dingtalk-workspace",
       "repo": "https://github.com/DingTalk-Real-AI/dingtalk-workspace-cli.git",
-      "ref": "v1.0.65",
+      "ref": "v1.0.66",
       "adapter": "skill-collection",
-      "commit": "92c4f8c355c749ec470c68f998d862a00d7d1709",
-      "syncedAt": "2026-10-21T06:48:34Z"
+      "commit": "f215043e676d6889e1ddce3464828d8b1ec40c31",
+      "syncedAt": "2026-10-28T15:59:59Z"
     },
     {
       "id": "ui-ux-pro-max",
@@ -177,8 +177,8 @@
       "repo": "https://github.com/hugohe3/ppt-master.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "f3660bfcd20bc07c29260b7e330261a01a2b5a6d",
-      "syncedAt": "2026-10-28T01:57:49Z"
+      "commit": "6fbac39e1d06a66ce3a8724b9366cb878b793f99",
+      "syncedAt": "2026-10-28T15:59:59Z"
     },
     {
       "id": "grill-me",
@@ -258,8 +258,8 @@
       "repo": "https://github.com/vercel/next.js.git",
       "ref": "canary",
       "adapter": "skill-collection",
-      "commit": "7356b0bcb5f22371c15dcb413afe5fb28412f52d",
-      "syncedAt": "2026-10-28T01:57:49Z"
+      "commit": "f922205f9e860de24673269f81dea51e9e33b0cb",
+      "syncedAt": "2026-10-28T15:59:59Z"
     },
     {
       "id": "shuorenhua",