fix seeds

adapters/bootstrap/EnsureInitialData.ts

@@ -20,21 +20,23 @@ export class EnsureInitialData {
 
   async execute(): Promise<void> {
     // Ensure initial admin user exists
-    try {
-      await this.signupUseCase.execute({
-        email: 'admin@gridpilot.local',
-        password: 'admin123',
-        displayName: 'Admin',
-      });
+    const signupResult = await this.signupUseCase.execute({
+      email: 'admin@gridpilot.local',
+      password: 'admin123',
+      displayName: 'Admin',
+    });
+
+    if (signupResult.isOk()) {
       this.logger.info('[Bootstrap] Initial admin user created');
-    } catch (error) {
-      if (error instanceof Error && error.message === 'An account with this email already exists') {
-        // User already exists, nothing to do
-        this.logger.info('[Bootstrap] Admin user already exists');
-      } else {
-        // Re-throw other errors
-        throw error;
-      }
+    } else if (signupResult.error?.code === 'EMAIL_ALREADY_EXISTS') {
+      this.logger.info('[Bootstrap] Admin user already exists');
+    } else {
+      const detailsMessage =
+        signupResult.error && typeof signupResult.error === 'object' && 'details' in signupResult.error
+          ? (signupResult.error as { details?: { message?: string } }).details?.message
+          : undefined;
+
+      throw new Error(detailsMessage ?? 'Failed to ensure initial admin user');
     }
 
     // Ensure initial achievements exist