verification before payment and email fixes

frontend/pweb/lib/pages/2fa/page.dart

@@ -23,6 +23,7 @@ class TwoFactorCodePage extends StatelessWidget {
   Widget build(BuildContext context) {
     return Consumer<TwoFactorProvider>(
       builder: (context, provider, child) {
+        final email = provider.pendingLogin?.target ?? '';
         if (provider.verificationSuccess) {
           WidgetsBinding.instance.addPostFrameCallback((_) {
             onVerificationSuccess();
@@ -36,7 +37,7 @@ class TwoFactorCodePage extends StatelessWidget {
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.center,
               children: [
-                const TwoFactorPromptText(),
+                TwoFactorPromptText(email: email),
                 const SizedBox(height: 32),
                 TwoFactorCodeInput(
                   onCompleted: (code) => provider.submitCode(code),
@@ -45,7 +46,12 @@ class TwoFactorCodePage extends StatelessWidget {
                 if (provider.isSubmitting)
                   const Center(child: CircularProgressIndicator())
                 else
-                  const ResendCodeButton(),
+                  ResendCodeButton(
+                    onPressed: provider.resendCode,
+                    isCooldownActive: provider.isCooldownActive,
+                    isResending: provider.isResending,
+                    cooldownRemainingSeconds: provider.cooldownRemainingSeconds,
+                  ),
                 if (provider.hasError) ...[
                   const SizedBox(height: 12),
                   ErrorMessage(error: AppLocalizations.of(context)!.twoFactorError),