fix(macos): validate PID and socket before reporting window as minimized

- Move PID extraction and app PID match before minimized check in windowStateFromAccessibilityAPI
- Add test asserting correct validation order in get-mpv-window-macos.swift
- Include new test in test:fast suite

scripts/get-mpv-window-macos.swift

@@ -174,22 +174,26 @@ private func windowStateFromAccessibilityAPI() -> WindowLookupResult? {
         }
 
         for window in windows {
-            var minimizedRef: CFTypeRef?
-            let minimizedStatus = AXUIElementCopyAttributeValue(window, kAXMinimizedAttribute as CFString, &minimizedRef)
-            if minimizedStatus == .success, let minimized = minimizedRef as? Bool, minimized {
-                foundMinimizedTargetWindow = true
-                continue
-            }
-
             var windowPid: pid_t = 0
             if AXUIElementGetPid(window, &windowPid) != .success {
                 continue
             }
 
+            if windowPid != app.processIdentifier {
+                continue
+            }
+
             if !windowHasTargetSocket(windowPid) {
                 continue
             }
 
+            var minimizedRef: CFTypeRef?
+            let minimizedStatus = AXUIElementCopyAttributeValue(window, kAXMinimizedAttribute as CFString, &minimizedRef)
+            if minimizedStatus == .success, let minimized = minimizedRef as? Bool, minimized {
+                foundMinimizedTargetWindow = true
+                continue
+            }
+
             if let geometry = geometryFromAXWindow(window) {
                 return .visible(
                     WindowState(

scripts/get-mpv-window-macos.test.ts

@@ -0,0 +1,33 @@
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import test from 'node:test';
+
+const source = readFileSync('scripts/get-mpv-window-macos.swift', 'utf8');
+
+test('minimized Accessibility windows are validated by PID and socket before reporting minimized', () => {
+  const minimizedAssignmentIndex = source.indexOf('foundMinimizedTargetWindow = true');
+  assert.notEqual(minimizedAssignmentIndex, -1);
+
+  const loopStartIndex = source.lastIndexOf('for window in windows', minimizedAssignmentIndex);
+  assert.notEqual(loopStartIndex, -1);
+
+  const pidExtractionIndex = source.indexOf(
+    'AXUIElementGetPid(window, &windowPid)',
+    loopStartIndex,
+  );
+  const appPidMatchIndex = source.indexOf('windowPid != app.processIdentifier', loopStartIndex);
+  const socketCheckIndex = source.indexOf('if !windowHasTargetSocket(windowPid)', loopStartIndex);
+
+  assert.ok(
+    pidExtractionIndex > loopStartIndex && pidExtractionIndex < minimizedAssignmentIndex,
+    'window PID must be extracted before accepting a minimized window',
+  );
+  assert.ok(
+    appPidMatchIndex > pidExtractionIndex && appPidMatchIndex < minimizedAssignmentIndex,
+    'window PID must match the owning app before accepting a minimized window',
+  );
+  assert.ok(
+    socketCheckIndex > appPidMatchIndex && socketCheckIndex < minimizedAssignmentIndex,
+    'target socket must be validated before accepting a minimized window',
+  );
+});