Update GUI panel docs and screenshots to current Amiberry Refresh all GUI panel wiki pages and their screenshots to match the current Amiberry GUI. Highlights: - Renamed "Virtual Keyboard" page to "On-Screen" (panel now covers the on-screen joystick and the Amiga keyboard overlay) - Display: scaling method moved here; Fullscreen replaced by Full-window - Filter: "Save Settings" renamed to "Save Defaults"; two per-mode Shader Parameters buttons (Native and RTG) - Configurations: category/metadata grouping (enabled via Global Settings) - Paths: reorganized into Base Content / Main Paths / Support Files / Visual Overrides - Misc: printer moved to I/O Ports; added key-swap and capture-release options - I/O Ports: added parallel-port Printer and serial CR/LF conversion - Input: added "Map left face button as extra Joy Up" - WHDLoad: booter database XML -> JSON; JSON display overrides - Floppy/DiskSwapper: full supported-format list incl. .wrp/.dsq - Quickstart: RP9 package loading; full model names - Themes: full rewrite (fonts, colors, actions) - Regenerated all panel screenshots from the current build