fix: cart email/phone capture form was never rendered

recordOrder() and autoSubmitPurchase() read userEmail()/userPhone()
signals and submitEmail() was fully implemented (validation, error
handling), but the success screen's template never rendered the
inputs - so the form was unreachable and the fallback auto-submit
always sent blank email/phone.

- Added the email/phone form to the payment-success screen, wired to
  the existing signals/handlers.
- autoSubmitPurchase() (the 5s fallback if the user doesn't submit
  manually) no longer navigates home via an unconditional setTimeout(0)
  fired before the submission result is known - it now waits for
  submitPurchaseEmail() to settle, same as the manual path, and skips
  entirely if the user already submitted (new purchaseSubmitted flag).
- It also now sends whatever the user has typed instead of
  hardcoded-blank fields, and shows a toast instead of only logging to
  console when no Telegram user id is available.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/pages/cart/cart.component.ts

@@ -71,6 +71,7 @@ export class CartComponent implements OnDestroy {
   emailError = signal<string>('');
   phoneError = signal<string>('');
   emailSubmitting = signal<boolean>(false);
+  purchaseSubmitted = signal<boolean>(false);
   paidItems: CartItem[] = [];
   
   maxChecks = Math.ceil(PAYMENT_MIN_POLL_SECONDS / (PAYMENT_POLL_INTERVAL_MS / 1000));
@@ -219,6 +220,7 @@ export class CartComponent implements OnDestroy {
     this.emailError.set('');
     this.phoneError.set('');
     this.emailSubmitting.set(false);
+    this.purchaseSubmitted.set(false);
     this.paidItems = [...this.items()];
     this.createPayment(paymentMethod);
   }
@@ -439,29 +441,39 @@ export class CartComponent implements OnDestroy {
     });
   }
 
+  /**
+   * Fallback fired a few seconds after payment success if the user hasn't
+   * already submitted the email/phone form themselves (submitEmail()).
+   * Navigates home only once the submission result is known, never before -
+   * and sends whatever the user has typed so far instead of blank fields.
+   */
   private autoSubmitPurchase(): void {
-    setTimeout(() => {  
-      const lang = this.langService.currentLanguage();
-     this.router.navigate([`/${lang}`]);}, 0);
-    const telegramUserId = this.getTelegramUserId();
-    
-    // Telegram ID is mandatory
-    if (!telegramUserId) {
-      console.error('Cannot submit purchase: Telegram ID is required');
-      this.emailSubmitting.set(false);
+    if (this.purchaseSubmitted()) {
       return;
     }
-    
+
+    const telegramUserId = this.getTelegramUserId();
+
+    // Telegram ID is mandatory for submitPurchaseEmail.
+    if (!telegramUserId) {
+      this.notifications.show(this.i18n.t('cart.telegramIdMissing'), 'warning');
+      this.emailSubmitting.set(false);
+      this.closePaymentPopup();
+      const lang = this.langService.currentLanguage();
+      this.router.navigate([`/${lang}`]);
+      return;
+    }
+
     this.emailSubmitting.set(true);
-    
+
     const emailData = {
-      email: '',
-      phone: '',
+      email: this.userEmail().trim(),
+      phone: this.userPhone().replace(/\D/g, ''),
       telegramUserId: telegramUserId,
       items: this.paidItems.map((item: CartItem) => ({
         itemID: item.itemID,
         name: item.name,
-        price: item.discount > 0 
+        price: item.discount > 0
           ? item.price * (1 - item.discount / 100)
           : item.price,
         currency: item.currency,
@@ -469,9 +481,10 @@ export class CartComponent implements OnDestroy {
         ...(item.selectedDelivery ? { delivery: [item.selectedDelivery] } : {})
       }))
     };
-    
+
     this.apiService.submitPurchaseEmail(emailData).subscribe({
       next: () => {
+        this.purchaseSubmitted.set(true);
         this.emailSubmitting.set(false);
         this.closePaymentPopup();
         const lang = this.langService.currentLanguage();
@@ -487,8 +500,6 @@ export class CartComponent implements OnDestroy {
       }
     });
     this.paymentStatus.set(null);
-
-
   }
 
   copyPaymentLink(): void {
@@ -541,6 +552,11 @@ export class CartComponent implements OnDestroy {
     
     this.apiService.submitPurchaseEmail(emailData).subscribe({
       next: () => {
+        this.purchaseSubmitted.set(true);
+        if (this.closeTimeout) {
+          clearTimeout(this.closeTimeout);
+          this.closeTimeout = undefined;
+        }
         this.emailSubmitting.set(false);
         this.notifications.show(this.i18n.t('cart.emailSuccess'), 'success');
         // Close popup and redirect to home page