LSP plugin lspServers config not being processed from marketplace.json #15148

Bug Description

The lspServers configuration defined in marketplace.json plugin entries is not being extracted or processed when plugins are loaded. This results in LSP plugins (typescript-lsp, pyright-lsp, gopls-lsp) being installed but non-functional.

Steps to Reproduce

1. Enable the typescript-lsp plugin:

   claude plugins install typescript-lsp@claude-plugins-official

2. Verify typescript-language-server is installed:

   which typescript-language-server
   # Returns: /opt/homebrew/bin/typescript-language-server

3. Restart Claude Code
4. Attempt to use LSP:

   LSP documentSymbol on src/server.ts
   

Expected Behavior

LSP operations should work since:

• The plugin is enabled in settings.json
• The marketplace.json plugin definition includes proper lspServers config
• The language server binary is installed

Actual Behavior

No LSP server available for file type: .ts

Debug Log Evidence

2025-12-23T12:09:16.380Z [DEBUG] [LSP MANAGER] initializeLspServerManager() called
2025-12-23T12:09:16.380Z [DEBUG] [LSP MANAGER] Created manager instance, state=pending
2025-12-23T12:09:16.387Z [DEBUG] LSP server manager initialized successfully
2025-12-23T12:09:16.387Z [DEBUG] LSP notification handlers registered successfully for all 0 server(s)
2025-12-23T12:09:16.433Z [DEBUG] Loading plugin typescript-lsp from source: "./plugins/typescript-lsp"
2025-12-23T12:09:16.434Z [DEBUG] Plugin typescript-lsp has no entry.skills defined
2025-12-23T12:09:45.479Z [DEBUG] No LSP server available for file type .ts for operation documentSymbol on file src/server.ts

Key observation: "0 server(s)" - the lspServers config is never loaded.

Root Cause Analysis

The marketplace.json correctly defines lspServers for the plugin:

{
  "name": "typescript-lsp",
  "description": "TypeScript/JavaScript language server for enhanced code intelligence",
  "version": "1.0.0",
  "source": "./plugins/typescript-lsp",
  "lspServers": {
    "typescript": {
      "command": "typescript-language-server",
      "args": ["--stdio"],
      "extensionToLanguage": {
        ".ts": "typescript",
        ".tsx": "typescriptreact",
        ".js": "javascript",
        ".jsx": "javascriptreact",
        ".mts": "typescript",
        ".cts": "typescript",
        ".mjs": "javascript",
        ".cjs": "javascript"
      }
    }
  }
}

However, when the plugin is installed:

1. Only the plugin source folder contents (just README.md) are copied to cache
2. The lspServers field from marketplace.json is never extracted or processed
3. LSP manager initializes with 0 servers before plugins finish loading

Workarounds Attempted (All Failed)

1. Adding .lsp.json to plugin cache folder - Not read
2. Adding lspServers to ~/.claude/settings.json - Not a supported setting
3. Reinstalling the plugin - Same result

Environment

• Claude Code version: Latest (as of 2025-12-23)
• OS: macOS Darwin 25.2.0
• typescript-language-server version: 5.1.3
• Node.js: 20+

Files Examined

~/.claude/settings.json (has enabledPlugins)
~/.claude/plugins/installed_plugins.json (plugin registered)
~/.claude/plugins/marketplaces/claude-plugins-official/.claude-plugin/marketplace.json (has lspServers)
~/.claude/plugins/cache/claude-plugins-official/typescript-lsp/1.0.0/ (only contains README.md)

Suggested Fix

The plugin loader should:

1. Extract lspServers from marketplace.json plugin definitions
2. Register these servers with the LSP manager after plugin loading completes
3. Or: Store lspServers config in installed_plugins.json for persistence