v2.3.3

Cove pdf-editor v2.3.3

Window border and resize fix

The app was frameless with no visible border, making the OS window edge hard to find and resize hard to initiate. This release adds a 4px visible border on the outer window so the edge is clearly perceivable against any wallpaper.

For easier resizing, a QSizeGrip / SE-corner resize grip and 6px-wide edge handles plus 8px corner handles have been added. The edge handles catch mousedown on the visible frame and call the platform resize API, so the user can grab anywhere on the frame to resize, not just exactly on the pixel line.