* fix: tray quit button, tree view multi-select, and SFTP banner handling
- Add "Quit Netcatty" button pinned to the bottom of TrayPanel so users
can exit the app when close-to-tray is enabled
- Support multi-select mode in HostTreeView (checkboxes, click-to-select)
so tree view behaves the same as grid/list views
- Patch ssh2 SFTP parser to skip non-SFTP preamble data (MOTD/banner text)
that causes "Packet length exceeds max length" errors on misconfigured
servers, with proper cross-frame buffering
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: gate SFTP preamble scan to client-mode only
Server-mode SFTP expects SSH_FXP_INIT (0x01) as the first packet, not
SSH_FXP_VERSION (0x02). Skip the preamble scan entirely when running in
server mode to avoid stalling server-side SFTP sessions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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