Capture picked windows natively with real rounded corners

Window picks now capture via ScreenCaptureKit's desktopIndependentWindow
filter, so the image carries the app's actual rounded-corner alpha
instead of a fixed 10pt mask that let the desktop show through on apps
with larger radii. Falls back to crop+mask when the window is not in the
shareable content.

💘 Generated with Crush

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

build-app.sh

@@ -108,9 +108,9 @@ cat > "$APP/Contents/Info.plist" <<'PLIST'
     <key>CFBundleIconFile</key>
     <string>Icon</string>
     <key>CFBundleShortVersionString</key>
-    <string>1.7.4</string>
+    <string>1.8.0</string>
     <key>CFBundleVersion</key>
-    <string>74</string>
+    <string>80</string>
     <key>LSUIElement</key>
     <true/>
     <key>NSHighResolutionCapable</key>