Fix PR review feedback for OKLCH color format

- Force sRGB color space in OKLCH and LAB conversions so the
  linearization curve and matrices match the actual color space
- Swap LAB/OpenGL labels in keyboard shortcut grid to match menu
  (Cmd+5=LAB, Cmd+6=OpenGL)
- Guard LAB format handler against SwiftUI copy format
- Fix "OpenGl" typo in background export line

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: superhighfives

Pika/Extensions/Cula.swift

@@ -321,7 +321,7 @@ extension NSColor {
      */
 
     private func toXYZComponents() -> (x: CGFloat, y: CGFloat, z: CGFloat) {
-        let srgb = toRGBAComponents()
+        let srgb = toRGBAComponents(in: .sRGB)
 
         // Linearize sRGB components
         func linearize(_ c: CGFloat) -> CGFloat {
@@ -401,7 +401,7 @@ extension NSColor {
      */
 
     func toOklchComponents() -> (l: CGFloat, c: CGFloat, h: CGFloat) {
-        let srgb = toRGBAComponents()
+        let srgb = toRGBAComponents(in: .sRGB)
 
         // Linearize sRGB components
         func linearize(_ c: CGFloat) -> CGFloat {

Pika/Utilities/Exporter.swift

@@ -24,7 +24,7 @@ class Exporter {
         // swiftlint:disable line_length
         return """
         \(PikaText.textColorForeground): Hex \(foregroundHex) · RGB \(foregroundRgb) · HSB \(foregroundHsb) · HSL \(foregroundHsl) · OpenGL \(foregroundOpengl) · OKLCH \(foregroundOklch)
-        \(PikaText.textColorBackground): Hex \(backgroundHex) · RGB \(backgroundRgb) · HSB \(backgroundHsb) · HSL \(backgroundHsl) · OpenGl \(backgroundOpengl) · OKLCH \(backgroundOklch)
+        \(PikaText.textColorBackground): Hex \(backgroundHex) · RGB \(backgroundRgb) · HSB \(backgroundHsb) · HSL \(backgroundHsl) · OpenGL \(backgroundOpengl) · OKLCH \(backgroundOklch)
         \(PikaText.textColorRatio): \(colorContrastRatio):1
         \(PikaText.textColorWCAG): AA Large (\(colorWCAGCompliance.ratio30 ? passMessage : failMessage)) · AA / AAA Large (\(colorWCAGCompliance.ratio45 ? passMessage : failMessage)) · AAA (\(colorWCAGCompliance.ratio70 ? passMessage : failMessage)) · Non-text (\(colorWCAGCompliance.ratio30 ? passMessage : failMessage))
         """

Pika/Views/EyedropperItem.swift

@@ -84,7 +84,9 @@ struct EyedropperItem: View {
             .onReceive(NotificationCenter.default.publisher(
                 for: Notification.Name(PikaConstants.ncTriggerFormatLAB)))
             { _ in
-                colorFormat = .lab
+                if copyFormat != .swiftUI {
+                    colorFormat = .lab
+                }
             }
             .onReceive(NotificationCenter.default.publisher(
                 for: Notification.Name(PikaConstants.ncTriggerFormatOKLCH)))

Pika/Views/KeyboardShortcutGrid.swift

@@ -176,8 +176,8 @@ struct KeyboardShortcutGrid: View {
                             .frame(height: verticalUnit)
 
                         KeyboardShortcutItem(
-                            title: PikaText.textFormatOpenGL,
-                            event: PikaConstants.ncTriggerFormatOpenGL,
+                            title: PikaText.textFormatLAB,
+                            event: PikaConstants.ncTriggerFormatLAB,
                             keys: ["⌘", "5"]
                         )
                         .frame(width: horizontalUnit, height: verticalUnit)
@@ -186,8 +186,8 @@ struct KeyboardShortcutGrid: View {
                             .frame(height: verticalUnit)
 
                         KeyboardShortcutItem(
-                            title: PikaText.textFormatLAB,
-                            event: PikaConstants.ncTriggerFormatLAB,
+                            title: PikaText.textFormatOpenGL,
+                            event: PikaConstants.ncTriggerFormatOpenGL,
                             keys: ["⌘", "6"]
                         )
                         .frame(width: horizontalUnit, height: verticalUnit)