Keep market source adapter as a local developer skill

Remove market-source-adapter from the public marketplace because it is a local Codex maintenance skill for adapting future third-party repositories, not a user-installable plugin.

Constraint: Marketplace content must contain only user-facing plugins; developer-only workflow skills belong in ~/.codex/skills.

Rejected: Mark it as internal in KeyInfo | That would still expose the skill through the product instead of keeping it as a local development aid.

Confidence: high

Scope-risk: narrow

Directive: Do not publish market-source-adapter to EAPIL Skill Market or KeyInfo skills_collection unless explicitly re-scoped as a user-facing skill.

Tested: python scripts/validate_marketplace.py; git diff --check; marketplace JSON check; quick_validate.py ~/.codex/skills/market-source-adapter

Not-tested: Restarting Codex to observe the global skill in the next thread.

.agents/plugins/marketplace.json

@@ -148,18 +148,6 @@
       },
       "category": "开发工具"
     },
-    {
-      "name": "market-source-adapter",
-      "source": {
-        "source": "local",
-        "path": "./plugins/codex/plugins/market-source-adapter"
-      },
-      "policy": {
-        "installation": "AVAILABLE",
-        "authentication": "ON_INSTALL"
-      },
-      "category": "开发工具"
-    },
     {
       "name": "eapil-gpt2-image",
       "source": {