fix: Correct marketplace.json schema to comply with Claude Code spec

Fix marketplace.json to match Claude Code's official marketplace schema:
- Remove homepage, repository, license from root level (not defined in spec)
- Move these fields into plugin entry where they are valid
- Change repository from npm-style object to simple string URL

Root level fields per official spec:
- name (required)
- owner (required)
- plugins (required)
- description (optional)

Plugin metadata fields like homepage, repository, and license
belong in the plugin entry, not at the marketplace root level.

Based on official anthropics/claude-plugins-official examples.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: kiyotis

.claude/skills/nabledge-6/plugin/CHANGELOG.md

@@ -17,6 +17,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - Changed author from string to object format
   - Changed repository from object to string format
   - Removed unsupported engines field
+- Fix marketplace.json schema to comply with Claude Code specification
+  - Moved homepage, repository, license from root to plugin entry
+  - Changed repository from object to string format in plugin entry
 
 ## [0.1] - 2026-02-12
 

.claude/skills/nabledge-6/plugin/marketplace.json

@@ -4,18 +4,15 @@
   "owner": {
     "name": "Nablarch"
   },
-  "homepage": "https://github.com/nablarch/nabledge",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/nablarch/nabledge"
-  },
-  "license": "Apache-2.0",
   "plugins": [
     {
       "name": "nabledge-6",
       "source": "./plugins/nabledge-6",
       "description": "Nablarch 6 skill for AI-assisted development",
-      "version": "0.1"
+      "version": "0.1",
+      "homepage": "https://github.com/nablarch/nabledge",
+      "repository": "https://github.com/nablarch/nabledge",
+      "license": "Apache-2.0"
     }
   ]
 }