v2026.06.14-alpha

• new SSH tunnel (local port forwarding). Any connection can use an existing SSH connection as a jump host. Auto-assigns local port, tunnels TCP through SSH. VNC ports automatically adjusted for libvirt display numbers.
• new FTP/FTPS file transfer. New File Transfer category with FTP and FTPS (explicit TLS), passive/active mode, configurable character encoding. Reuses the SFTP two-pane file manager UI; Go backend uses shared fileTransferSession interface.
• new SFTP max concurrent transfers (per SSH connection, default 5). Semaphore-based concurrency control prevents bandwidth saturation and server MaxSessions limits.
• new Connection form now has four categories: Terminal / File Transfer / Remote Desktop / Database. SSH labeled as SSH (SFTP), appears under both Terminal and File Transfer.
• improve All notifications now have a close button and auto-dismiss after 5 seconds. Unified via services/message.ts wrapper.
• improve KeepAlive cache extended to all tab components (Settings/SFTP/RDP/VNC/SPICE). Switching tabs no longer rebuilds components.
• improve Fonts switched to system native font stack, removing Google Fonts CDN dependency. UI uses system interface fonts, monospace uses system-provided fixed-width fonts. CJK fallback covers Windows/macOS/Linux.
• bugfix Fixed KeepAlive-cached SFTP instances picking up global drag events, causing files to upload to the wrong connection. Document event listeners now managed via onActivated/onDeactivated.
• bugfix Fixed stale edit data leaking into the quick-new-connection form.
• bugfix Fixed duplicate task IDs from identical nanosecond timestamps in concurrent transfers causing jumbled progress bars. Switched to atomic counter.
• bugfix Fixed port input min=1 preventing value 0.
• bugfix Fixed 4px body padding preventing the titlebar from being flush with the window edge.
• bugfix Fixed 4px gap between local terminal submenu and its trigger causing submenu to close on mouse enter.
• bugfix Fixed AI confirmation level dropdown button missing ChevronDown icon import.
• bugfix Fixed default port not updating when switching between remote desktop types (e.g. RDP 3389 → VNC still showing 3389).