Improved MCP packaging and validation for reliable remote access.

- Port availability is now checked more accurately when creating a forwarding rule, so occupied ports are caught before the rule is saved. - Editing an existing rule now handles port and protocol changes more consistently, reducing false warnings and unnecessary failures. - When an export port is occupied, the rule list now shows “Export port is occupied” directly, making the issue easier to identify. - Fixed an issue where the rule list could stay loading for too long on first open. - Improved the mobile rule list so existing rules remain visible and interactive while loading. - Fixed the Chinese text in the high-risk port confirmation dialog to avoid mixed Chinese and English.

Added support for forwarding both TCP and UDP on the same port. Fixed port detection and display issues for some apps, with improved LPKV2 compatibility.

Fixed an issue where services of multi-instance apps were not shown in the port forwarding selector.

Added server-side sshd configuration validation before saving SSH forwarding settings. When AllowTcpForwarding or GatewayPorts is not configured correctly, the UI now shows a blocking dialog with clear remediation guidance.