mcpServerScope: user not working - MCP servers not available across worktrees

Bug Description

The mcpServerScope: "user" configuration option in claude_desktop_config.json is not making MCP servers available across different git worktrees.

Expected Behavior

When mcpServerScope: "user" is set in the global config file at ~/Library/Application Support/Claude/claude_desktop_config.json, MCP servers should be available in all Claude Code instances regardless of the working directory.

Actual Behavior

MCP servers are only available in directories that have a local .claude/claude_desktop_config.json file. Other worktrees show "No MCP servers configured" message.

Configuration

• Global config location: ~/Library/Application Support/Claude/claude_desktop_config.json
• Contains: "mcpServerScope": "user"
• MCP servers configured: linear-server, sentry, sosumi

Environment

• Platform: macOS
• Claude Code version: Latest

Workaround

Created local MCP configs in each worktree, but this defeats the purpose of user-level scope.