Fix Titan 2 Elite rounded corners

[itsthisjustin]

Summary

Improve the experimental Titan 2 Elite rounded-corner layout so the keyboard chrome follows the physical screen curves instead of cutting off controls and modifier indicators.

Changes

• Nest status-bar controls inside the screen's bottom curves, using platform corner radii with a fallback for devices that do not report them.
• Make suggestions and variations gapless in rounded mode, including dynamic variation sizing and theme-aware side and bottom fills. Empty side-button slots use the appropriate row background.
• Resize side-button touch targets and center their icons for normal and Pastierina modes; improve clipboard count placement and readability.
• Draw curved modifier indicators with consistent thickness and height. Remove duplicate disabled tracks and the gap between the right Ctrl and Shift indicators. Shared contours show the strongest active/locked modifier state.
• Align SYM page heights, close-button geometry, and bottom fills; skip the panel slide animation in rounded mode.
• Reuse the SYM close control for clipboard and emoji panels. Clipboard entries retain their individual card spacing and backgrounds.
• Expand emoji category buttons to the bottom control-row height and center their icons. Let touches pass through the transparent portion of the overlapping indicator layer so search and category controls remain tappable.
• Keep new surfaces and icons tied to keyboard theme colors, and restore the existing layout when the rounded-corner setting is disabled.

[pzauner]

thanks for the PR; will look into it. Had it on my list of properly doing rounded corners as the current implementation sucks either way.

was thinking about wider outside buttons with non centered icons or an outside padding and then some rounding following the curve of the screen

[itsthisjustin]

thanks for the PR; will look into it. Had it on my list of properly doing rounded corners as the current implementation sucks either way.

was thinking about wider outside buttons with non centered icons or an outside padding and then some rounding following the curve of the screen

Here's a screenshot

[pzauner]

Mint!

[pzauner]

[itsthisjustin]

Oh that looks dope