v2.8.8

• Polished native GUI on all platforms with system accent color support and customization in Settings.
• Reimplemented Input / InputString with async variants (InputAsync, InputStringAsync) for interactive input; added simple ProgressIndicator (supports dynamic symbols).
• Improved text rendering in graphics: Text can inset symbolic numeric expressions (e.g., 1/2, Exp[...], Sqrt[...])—note: dynamics only for strings.
• Shortcuts updates: new evaluate-and-jump shortcut (Ctrl/CMD+Enter)
• Fix #453
• Fix #459
• Update on #458 and related #426
• AppImage added for GNU/Linux!