added setting check

src/app/pages/create-page/create-page.ts

@@ -22,6 +22,8 @@ interface SettingsResponse {
   minAmount?: number;
   maxAmount?: number;
   qrTTL?: number;
+  defaultAmount?: number;
+  enableAmount?: boolean;
 }
 
 interface CreateQrResponse {
@@ -58,6 +60,7 @@ export class CreatePage {
   maxAmount = signal<number>(200_000);
 
   amount = signal<number | null>(null);
+  private lockedAmount = signal<number | null>(null);
   note = signal<string>('');
   error = signal<string>('');
   loading = signal<boolean>(false);
@@ -109,17 +112,26 @@ export class CreatePage {
 
   private loadSettings(): void {
     // Fetch limits from /qr/settings. If the call fails, keep defaults.
-    const url = `${QR_VITANOVA_API}/qr/settings`;
+    const partnerqrID = this.partnerqrID;
+    const url = `${QR_VITANOVA_API}/qr/settings${partnerqrID ? `?id=${encodeURIComponent(partnerqrID)}` : ''}`;
     this.http.get<SettingsResponse>(url).subscribe({
       next: (s) => {
         if (typeof s?.minAmount === 'number') this.minAmount.set(s.minAmount);
         if (typeof s?.maxAmount === 'number') this.maxAmount.set(s.maxAmount);
+
+        const defaultAmount = typeof s?.defaultAmount === 'number' ? s.defaultAmount : 0;
+        if (s?.enableAmount === true && defaultAmount > 0) {
+          this.lockedAmount.set(defaultAmount);
+          this.amount.set(defaultAmount);
+        } else {
+          this.lockedAmount.set(null);
+        }
       }
     });
   }
 
   createCheck(): void {
-    const val = this.amount();
+    const val = this.lockedAmount() ?? this.amount();
     if (val !== null && val < this.minAmount()) {
       this.error.set(`${this.t('errors.invalid_amount')} (мин. ${this.minAmount()} ₽)`);
       return;
@@ -223,10 +235,19 @@ export class CreatePage {
   }
 
   onAmountChange(value: number | null): void {
+    if (this.lockedAmount() !== null) {
+      this.amount.set(this.lockedAmount());
+      return;
+    }
+
     this.amount.set(value || null);
     if (value && value > 0) this.error.set('');
   }
 
+  isAmountLocked(): boolean {
+    return this.lockedAmount() !== null;
+  }
+
   onNoteChange(value: string): void {
     this.note.set(value);
   }