- Completely rewrite McpServerModal to support multiple servers
- Add McpServer interface with id, url, enabled, and name fields
- Use localStorage 'mcpServers' array instead of single server URL
- Add server list UI with status badges, toggle, and delete buttons
- Add 'Add New Server' section at bottom with input and Add button
- Support enabling/disabling individual servers with Power/PowerOff icons
- Delete servers with Trash2 icon in top right of each server block
- Aggregate tools from all enabled servers for parent component
- Render multiple McpConnection components for enabled servers
- Update plug indicator to show correct server count
- Add debug information panel showing server and tool counts
- Handle server names using hostname from URL
- Each server gets unique connection state tracking by server ID
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