Fix password state sync for OAuth users

src/lib/identityService.ts

@@ -160,6 +160,29 @@ export async function connectIdentity(
   }
 }
 
+/**
+ * Wait for email provider to be created after password addition
+ * Supabase takes time to create the email identity, so we poll with retries
+ */
+async function waitForEmailProvider(maxRetries = 4): Promise<boolean> {
+  const delays = [500, 1000, 1500, 2000]; // Exponential backoff
+  
+  for (let i = 0; i < maxRetries; i++) {
+    const identities = await getUserIdentities();
+    const hasEmail = identities.some(id => id.provider === 'email');
+    
+    if (hasEmail) {
+      return true;
+    }
+    
+    if (i < maxRetries - 1) {
+      await new Promise(resolve => setTimeout(resolve, delays[i]));
+    }
+  }
+  
+  return false;
+}
+
 /**
  * Add password authentication to an OAuth-only account
  */
@@ -180,6 +203,19 @@ export async function addPasswordToAccount(
     
     if (error) throw error;
     
+    // Force session refresh to sync identity state
+    const { error: refreshError } = await supabase.auth.refreshSession();
+    if (refreshError) {
+      console.warn('[IdentityService] Session refresh failed:', refreshError);
+    }
+    
+    // Wait for email provider to be created
+    const emailCreated = await waitForEmailProvider();
+    
+    if (!emailCreated) {
+      console.warn('[IdentityService] Email provider not found after password addition');
+    }
+    
     // Log audit event
     const { data: { user } } = await supabase.auth.getUser();
     if (user) {