Request capture pixels from the selection screen's backing scale

SCDisplay.width is in points, not pixels: the previous fix sent point
counts to SCStreamConfiguration, producing blurry main-screen captures and
failed secondary-screen captures. Multiply by the backing scale factor of
the screen containing the selection (defaulting to 1x, never forcing 2x).

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4-flash-0731

Sources/Kapture/CaptureController.swift

@@ -141,10 +141,15 @@ final class ScreenCapture {
                 let excluded = content.windows.filter { excludedSet.contains($0.windowID) }
                 let filter = SCContentFilter(display: display, excludingWindows: excluded)
                 let config = SCStreamConfiguration()
-                // display.width/height are pixels; request the display's full
-                // native resolution so ScreenCaptureKit gives us every pixel.
-                config.width = Int(display.width)
-                config.height = Int(display.height)
+                // SCDisplay.width/height are in POINTS; SCStreamConfiguration
+                // width/height are output PIXELS. Multiply by the backing scale
+                // of the screen containing the selection so retina displays are
+                // captured at full resolution and 1x displays stay 1x.
+                let backingScale = NSScreen.screens
+                    .first(where: { $0.frame.contains(NSPoint(x: rect.midX, y: rect.midY)) })?
+                    .backingScaleFactor ?? 1
+                config.width = Int(CGFloat(display.width) * backingScale)
+                config.height = Int(CGFloat(display.height) * backingScale)
                 config.showsCursor = true
 
                 guard let image = try? await SCScreenshotManager.captureImage(contentFilter: filter, configuration: config) else {

build-app.sh

@@ -108,9 +108,9 @@ cat > "$APP/Contents/Info.plist" <<'PLIST'
     <key>CFBundleIconFile</key>
     <string>Icon</string>
     <key>CFBundleShortVersionString</key>
-    <string>1.1.4</string>
+    <string>1.1.5</string>
     <key>CFBundleVersion</key>
-    <string>14</string>
+    <string>15</string>
     <key>LSUIElement</key>
     <true/>
     <key>NSHighResolutionCapable</key>