Pinned Taskbar and Window Backdrops
The bottom taskbar pins to the viewport edge, with dedicated quiet backdrops and small-phone spacing.
# Pinned Taskbar and Window Backdrops
This update tidies the desktop layer behind the main windows and keeps the bottom navigation aligned across routes.
## Changes
- The bottom taskbar now pins to the browser viewport edge instead of being pushed down by different page heights.
- Knowledge, Videos, Resources, Games, Blog, Chatroom, and About now reserve space for the taskbar so normal windows are not covered or overlapped.
- Narrow phones below 460px now reserve extra height for the wrapped top bar, preventing windows from pressing into the bottom taskbar on iPhone SE / 390px widths.
- Non-home window pages now use dedicated `assets/images/window-backdrops/<time>.png` backdrops for morning, day, dusk, and night, with a low-contrast wash to keep them modern and quiet.
- The home screen keeps the existing animated wallpaper stage, cloud layers, and preview query parameter.
- The public CSS / JS cache version was updated to avoid stale taskbar or backdrop styles online.
