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.

plugins/codex/plugins/ppt-master/THIRD_PARTY_SOURCE.json

@@ -2,8 +2,8 @@
   "sourceId": "ppt-master",
   "repo": "https://github.com/hugohe3/ppt-master.git",
   "ref": "main",
-  "commit": "090a133040d9bf41dca887dab78386c553af5dc6",
+  "commit": "53c9c2a5e9f1a49096324fba4f95833649c6a0f4",
   "adapter": "claude-skill",
   "sourcePath": "skills/ppt-master",
-  "syncedAt": "2026-08-15T16:00:01Z"
+  "syncedAt": "2026-08-16T16:00:01Z"
 }