v1.1.0 - SFTP Integration & Split-Pane Sidebar

New Features

• SFTP File Manager: Integrated SFTP client to browse, download, upload, and delete server files.
• Integrated Split-Pane: A dedicated file explorer alongside every terminal window for per-server management.
• Cross-Server Transfer: Direct server-to-server file transfer support by dragging items between panels.
• Improved UI: Refined Zinc-themed components with smoother animations and better layout responsiveness.