Replaced the SSH library + IO thread + intermediate PTY bridge with
vte_terminal_spawn_sync(). This eliminates the broken terminal behavior
(backspace, Ctrl+C, copy/paste, bash completion) caused by the
intermediate PTY with no process on the slave side.
- SshTerminal now spawns 'ssh' as a VTE subprocess
- Removed libssh dependency from terminal (still used for key validation)
- Removed IO thread, manual PTY creation, and thread synchronization
- VTE now handles all terminal I/O, line discipline, resize, etc.
- Password saved: uses sshpass -e with SSHPASS env var if available
- Password not saved: ssh prompts interactively in the terminal
- Removed show_password_dialog (no longer needed)
- Simplified connect flow in ssh_client.cpp
- Added server list sidebar (GtkPaned) showing saved servers with
name, user@host:port detail. Double-click to connect.
- Added '+' button in sidebar to add new servers
- Added notification bar (animated GtkRevealer) for status messages:
'Server saved', 'Server connected', 'Server disconnected',
'Server removed', 'Key generated', 'Key imported', 'Key deleted'
Auto-hides after 4 seconds.
- Changed icon to terminal-style PNG + SVG (scalable)
- Server list updates automatically when servers are added/removed
Layout: [Sidebar: Servers] | [Notebook: Terminal Tabs]
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