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": "87a266971d9460a3d2606075b8e91edc83325472",
-      "syncedAt": "2026-10-08T15:59:59Z"
+      "commit": "05bf93879366fa21c5a4df7482a96adf13beabd2",
+      "syncedAt": "2026-10-09T02:04:00Z"
     },
     {
       "id": "generate-agents-md",
@@ -123,8 +123,8 @@
       "repo": "https://github.com/Leonxlnx/taste-skill.git",
       "ref": "main",
       "adapter": "skill-collection",
-      "commit": "b482f7a970abb98c4108d4a9f761e458c64cefc8",
-      "syncedAt": "2026-10-07T16:00:00Z"
+      "commit": "18dfc928b135629e0eddfdd445a06400d04ed439",
+      "syncedAt": "2026-10-09T02:04:00Z"
     },
     {
       "id": "shadcn",
@@ -132,8 +132,8 @@
       "repo": "https://github.com/shadcn-ui/ui.git",
       "ref": "main",
       "adapter": "claude-skill",
-      "commit": "0132174664c07d41262fb51012d0cc782e458e6c",
-      "syncedAt": "2026-10-08T15:59:59Z"
+      "commit": "6ea090075cd537d3b792c6c1a625e2448b6ede26",
+      "syncedAt": "2026-10-09T02:04:00Z"
     },
     {
       "id": "frontend-slides",
@@ -202,10 +202,10 @@
       "id": "hardware-development",
       "pluginName": "hardware-development",
       "repo": "https://git.playones.com/xufeng/hardware-development.git",
-      "ref": "v1.2.0",
+      "ref": "v1.3.0",
       "adapter": "claude-skill",
-      "commit": "fcbde2e9cfa14f3fd2e154d7bef6bd264da61fcd",
-      "syncedAt": "2026-09-17T16:00:00Z"
+      "commit": "7ec66f26a4a8c376c13eeb41fbe4f70a538c085b",
+      "syncedAt": "2026-10-09T02:04:00Z"
     },
     {
       "id": "artemis-case-prep",
@@ -258,8 +258,8 @@
       "repo": "https://github.com/vercel/next.js.git",
       "ref": "canary",
       "adapter": "skill-collection",
-      "commit": "7549879a48899af2a54e77c316d174fb6cde111e",
-      "syncedAt": "2026-10-08T15:59:59Z"
+      "commit": "6469906e7909c824f22a165ce858f7f42c978bdd",
+      "syncedAt": "2026-10-09T02:04:00Z"
     },
     {
       "id": "shuorenhua",