Little Performance Improvements

Improved hammer previews and separate tool preview settings

• Fast hammer outlines.
• Renamed shapeRenderer/shapeColor to chiselRenderer/chiselColor, preserving saved settings.
• Added hammerColor.
• The editing outline path now also gets used for the chisel Replace, Stencil, and Colorize mode.
• Made covered editing outlines dashed at 25% opacity; visible lines stay solid.

Fixed preview z-fighting on coincident surfaces

• Gave Default, Surface, and Texture previews depth priority, including at steep viewing angles.

Fixed translucent tiles rendering in front of previews

• Adjusted editing-preview rendering order and depth handling.

Fixed blueprint rotation point marker rendering

• Preserved rotation point markers colors independently of blueprintColor, including internal faces with “even” enabled.
• Excluded rotation point markers from Texture and Outline geometry and occlusion.
• Kept Surface rotation point markers steady and respect previewSurfaceAlpha.
• Handled marker visibility within Surface’s depth pass, including cached frames.