[Bug] Marketplace plugins fail with unrecognized config keys: source, category, strict

Bug Description
Plugins from marketplae reporting invalid config. Unrecognized keys: "source", "category", "strict"

Environment Info

• Platform: darwin
• Terminal: alacritty
• Version: 2.1.49
• Feedback ID: 4e2dcbdd-c274-43aa-b49c-690f12ddc11b

Errors

Plugin Errors
 └ 7 plugin error(s) detected:
   └ plugin:github [github]: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN
   └ plugin:greptile [greptile]: MCP server greptile invalid: Missing environment variables: GREPTILE_API_KEY
   └ marketplace-plugin: Plugin plugin-dev has an invalid manifest file at
 /Users/user/.claude/plugins/cache/claude-plugins-official/plugin-dev/8deab8460a9d/.claude-plugin/plugin.json.

 Validation errors: : Unrecognized keys: "source", "category"

 Please fix the manifest or remove it. The plugin cannot load with an invalid manifest.
   └ marketplace-plugin: Plugin pyright-lsp has an invalid manifest file at
 /Users/user/.claude/plugins/cache/claude-plugins-official/pyright-lsp/1.0.0/.claude-plugin/plugin.json.

 Validation errors: : Unrecognized keys: "source", "category", "strict"

 Please fix the manifest or remove it. The plugin cannot load with an invalid manifest.
   └ marketplace-plugin: Plugin superpowers has an invalid manifest file at
 /Users/user/.claude/plugins/cache/claude-plugins-official/superpowers/4.3.0/.claude-plugin/plugin.json.

 Validation errors: : Unrecognized keys: "category", "source"

 Please fix the manifest or remove it. The plugin cannot load with an invalid manifest.
   └ marketplace-plugin: Plugin typescript-lsp has an invalid manifest file at
 /Users/user/.claude/plugins/cache/claude-plugins-official/typescript-lsp/1.0.0/.claude-plugin/plugin.json.

 Validation errors: : Unrecognized keys: "source", "category", "strict"

 Please fix the manifest or remove it. The plugin cannot load with an invalid manifest.
   └ marketplace-plugin: Plugin gopls-lsp has an invalid manifest file at
 /Users/user/.claude/plugins/cache/claude-plugins-official/gopls-lsp/1.0.0/.claude-plugin/plugin.json.

 Validation errors: : Unrecognized keys: "source", "category", "strict"

 Please fix the manifest or remove it. The plugin cannot load with an invalid manifest.

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