Fixed
- Wrong colors on external monitors — set
NSWindow.colorSpace = .sRGBon all windows that display screenshots (overlay, editor, pin, thumbnail). The window backing store defaults to the display's ICC profile, so drawing an sRGB-tagged CGImage triggered a color space conversion at draw time that mangled colors on monitors with non-sRGB profiles. With matching color spaces the draw-time conversion is a no-op; the compositor handles sRGB→display mapping correctly via the GPU. Same fix used by WezTerm and Servo.