fix(products): set direct_price when saving manual pricing

Manual source left direct_price=0 so customer enrich overwrote stored price with live gold buy.

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

src/pages/menuPages/products/base/components/ProductEditorFormBody.vue

@@ -955,6 +955,7 @@ watch(
       props.form.price_formula_enabled = false
       props.form.reading_method = null
       props.form.price_offset_percent = 0
+      props.form.direct_price = 1
     } else if (option === '3') {
       // قیمت اپ: مرجع خارجی ندارد، متغیر (هر گرم × وزن)
       props.form.reading_method = null

src/pages/menuPages/products/base/index.vue

@@ -602,9 +602,11 @@ async function saveProduct() {
       payload.price_formula = String(payload.price_formula ?? '').trim() || '((P)/MG)*W+100000'
       delete payload.price
     } else if (methodOption.value === '1') {
+      // دستی: direct_price=1 تا enrich وزن‌محور مظنهٔ زنده را روی price ذخیره‌شده ننویسد
       payload.reading_method = null
       payload.price_offset_percent = 0
       payload.app_price = false
+      payload.direct_price = 1
       payload.price_formula_enabled = false
     } else if (methodOption.value === '3') {
       // قیمت اپ: بدون مرجع خارجی، متغیر (هر گرم × وزن)، قیمت دستی نگه نمی‌دارد