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

@@ -105,8 +105,8 @@
       "repo": "https://github.com/nextlevelbuilder/ui-ux-pro-max-skill.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "67803eac81607188194aea9842a723b89326d90d",
-      "syncedAt": "2026-10-11T16:00:00Z"
+      "commit": "7246805992a42b7bba37d4cac83b01416f0c6c44",
+      "syncedAt": "2026-10-12T15:59:59Z"
     },
     {
       "id": "caveman",
@@ -123,8 +123,8 @@
       "repo": "https://github.com/Leonxlnx/taste-skill.git",
       "ref": "main",
       "adapter": "skill-collection",
-      "commit": "717446e07a78d4e6d7918b1fde1a263378eebac9",
-      "syncedAt": "2026-10-10T16:00:00Z"
+      "commit": "d237dd399d57524945c0c81327da5da19f7a468d",
+      "syncedAt": "2026-10-12T15:59:59Z"
     },
     {
       "id": "shadcn",
@@ -132,8 +132,8 @@
       "repo": "https://github.com/shadcn-ui/ui.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "02cad61166c4c20edbc8a3f71bd720eed4c1f49b",
-      "syncedAt": "2026-10-11T16:00:00Z"
+      "commit": "993eb2c3151997ce08a49635c10fd8c8ef3713c7",
+      "syncedAt": "2026-10-12T15:59:59Z"
     },
     {
       "id": "frontend-slides",
@@ -220,10 +220,10 @@
       "id": "artemis-automation",
       "pluginName": "artemis-automation",
       "repo": "https://git.playones.com/chenmingxuan/Artemis-Eapil.git",
-      "ref": "v1.4.0",
+      "ref": "v1.5.2",
       "adapter": "claude-skill",
-      "commit": "4d6560dbd47cff63467b82373a023f1a954a9f62",
-      "syncedAt": "2026-10-09T10:26:29Z"
+      "commit": "bdc75d0c657c5c2707b4c6e352eed6a1f5c14fff",
+      "syncedAt": "2026-10-12T15:59:59Z"
     },
     {
       "id": "embedded-app-pc-debug",
@@ -258,8 +258,8 @@
       "repo": "https://github.com/vercel/next.js.git",
       "ref": "canary",
       "adapter": "skill-collection",
-      "commit": "d8c1c1b0002db8ccb63b58095f338e8bf423fa99",
-      "syncedAt": "2026-10-11T16:00:00Z"
+      "commit": "a7fd0aa6d4e0eb3cbea4b24e27dc82ad65b8a388",
+      "syncedAt": "2026-10-12T15:59:59Z"
     },
     {
       "id": "shuorenhua",