Add page pull-to-refresh functionality

[BillSteinUNB]

Summary

Add pull-to-refresh support to allow users to manually refresh content by pulling down on the screen.

Context

A TestFlight user requested the ability to refresh the page/content. On mobile apps, pull-to-refresh is a standard pattern that allows users to:

• Refresh the current view to get updated data
• Re-establish connection to the server
• Reload recent projects list
• Force refresh of session content

Current Behavior

Currently, the app doesn't have any pull-to-refresh mechanism. Users must manually navigate or wait for automatic updates.

Proposed Implementation

Consider adding pull-to-refresh to:

1. Home Screen - Refresh recent projects list and server connection status
2. Session Screen - Refresh file content, chat history, or re-sync with server

This should be a native mobile gesture that feels natural on iOS (and future Android port).

Technical Considerations

• Use platform-native pull-to-refresh components
• Show appropriate loading indicator during refresh
• Handle refresh failures gracefully (show error toast, allow retry)
• Consider whether refresh should auto-close any open dialogs or panels

Labels

• enhancement
• ux-improvement

[DNGriffin]

@BillSteinUNB - love it. I'll add this tomorrow