JSplitter v4.1.17

• [BUG] Fixed nested gdi.PushClip/PopClip and d2d.PushClip/PopClip. Clip states are now kept on a stack and correctly restored when multiple clipping regions are nested.
• [FEATURE] Added GdiBitmap.GetThemeColourSchemeJSON and D2DBitmap.GetThemeColourSchemeJSON. The method analyses bitmap colours using weighted K-means++ in OKLab and returns a coordinated five-role UI colour scheme for background, text, playing background/accent, focus frame and selection background. The optional palette size can be adjusted by the caller. A sample demonstrating the new method well has been added.
• [UPDATE] Reworked the performance API to more closely follow Web Performance / User Timing / Performance Timeline behaviour. Added standard mark and measure forms and options, repeated mark/measure entries, ordered timeline queries, improved PerformanceObserver behaviour and static PerformanceObserver.supportedEntryTypes, while preserving existing JSplitter extensions for compatibility. Added Performance API sample.
• [FEATURE] Added native filesystem helpers (with sample):
  • utils.GetDrives
  • utils.GetDriveInfo
  • utils.GetShortPath
  • utils.GetFolderSize
  • utils.GetFolderSizeAsync
• [FEATURE] Added fb.GetLibraryRoots to return unique Media Library root paths inferred from the current Media Library contents without reconstructing them in JavaScript.
• [UPDATE] Expanded the utils.ShowHtmlDialog sample to demonstrate passing data and callbacks between panel JavaScript and the HTML dialog, including window.external.dialogWindow for correct ownership of native dialogs opened from HTML.
• [UPDATE] Improved the generated API documentation with a persistent collapsible navigation tree for API members and global API search.
• [UPDATE] Updated JS engine to SpiderMonkey 140.15.0esr.