Add Stage Surface Color Dialog and Background Ground Functionality

- Implemented StageSurfaceColorDialog for custom color selection with live preview.
- Created StageBackgroundGround class for non-walkable scenery behind the set.
- Introduced StageRectSurface for shared rectangular geometry and tint preview.
- Added StageSurfacePreview for rendering surface previews.
- Developed comprehensive tests for surface color selection, rendering, and serialization.
This commit is contained in:
2026-10-17 21:00:03 -04:00
parent a0510e6405
commit 26dd9c64e1
39 changed files with 3118 additions and 142 deletions
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uid://wlpdbamdghx4