Port modular price, product, and PWA fixes into boursecu

Sync live quote handling, SSE product images, store hours, file URL normalization, PWA icon cache, TV monitor, about software, SuperAdmin menu gates, price alerts, and related UX from modular while preserving boursecu branding and config constraints.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/utils/productDealMethod.ts

@@ -59,6 +59,7 @@ export interface ProductUnitSource {
   group_type?: string | null
   amount?: number | null
   trade_by_quantity?: boolean | number | null
+  price_formula_enabled?: boolean | number | null
 }
 
 export function isWeightBasedProductUnit(unit?: string | null) {
@@ -80,6 +81,11 @@ export function hasProductUnitWeight(product?: ProductUnitSource | null) {
 
 /** ضریب قیمت — فقط «متغیر» بدون مرجع اتوماتیک: قیمت هر گرم × وزن */
 export function productPriceAmountFactor(product?: ProductUnitSource | null) {
+  // قیمت فرمولی = قیمت واحد هر عدد (وزن داخل فرمول است)
+  if (product?.price_formula_enabled) {
+    return 1
+  }
+
   if (product?.reading_method) {
     return 1
   }