[userfront] source 개념삭제. redirect 동작 정리

userfront/lib/core/services/web_auth_integration_web.dart

@@ -61,10 +61,11 @@ void implSendLoginSuccess(String token) {
   }
 
   final message = {'type': 'LOGIN_SUCCESS', 'token': effectiveToken};
+  final opener = html.window.opener;
 
-  if (html.window.opener != null) {
+  if (opener != null) {
     try {
-      html.window.opener!.postMessage(message, '*');
+      opener.postMessage(message, '*');
       debugPrint('Sent login success message to opener');
     } catch (e) {
       debugPrint('Failed to postMessage: $e');
@@ -72,22 +73,20 @@ void implSendLoginSuccess(String token) {
 
     // Close the popup after a short delay to ensure message sending
     Timer(const Duration(milliseconds: 500), () {
-      html.window.close();
+      try {
+        html.window.close();
+      } catch (e) {
+        debugPrint('Failed to close window: $e');
+      }
     });
-  } else {
-    // Should not happen given isPopup check, but as fallback:
-    debugPrint('No opener found during popup flow.');
+    return;
   }
+
+  // No opener and no redirect: fall back to local navigation
+  debugPrint('No opener found. Redirecting to /.');
+  html.window.location.href = '/';
 }
 
 bool implIsPopup() {
-  if (html.window.opener != null) return true;
-
-  // Fallback: Check query parameters for integration source
-  final uri = Uri.base;
-  if (uri.queryParameters['source'] == 'adminfront') return true;
-
-  // Manual parse fallback for cases where Uri.base might miss params due to hash routing
-  final search = html.window.location.search;
-  return search != null && search.contains('source=adminfront');
+  return html.window.opener != null;
 }