feat(home): landing-style live chart, dynamic product tabs, and price copy

Replace home chart with landing live card, catalog-driven tabs, and smoother range transitions; normalize مظنه to قیمت in user-facing strings; add installment and zaarbox chart APIs.

src/api/digipayInstallment.ts

@@ -0,0 +1,26 @@
+import useAxios from '@/utils/useAxios'
+
+export interface DigipayInstallmentStatus {
+  enabled: boolean
+  status: 'none' | 'pending' | 'active' | string
+  plan4_remaining_toman: number
+  plan12_remaining_toman: number
+  gram_price_rial: number
+  config: {
+    onboarding_url: string
+    fee_shop_percent: number
+    fee_gateway_percent: number
+    fee_extra_percent: number
+    plan4_cap_toman: number
+    plan12_cap_toman: number
+  }
+}
+
+export const fetchDigipayInstallment = () =>
+  useAxios.get<DigipayInstallmentStatus>('/customer/digipay_installment')
+
+export const startDigipayInstallment = () =>
+  useAxios.post<DigipayInstallmentStatus>('/customer/digipay_installment/start')
+
+export const buyDigipayInstallment = (plan: 4 | 12, amountToman: number) =>
+  useAxios.post('/customer/digipay_installment/buy', { plan, amount_toman: amountToman })