feat: calculate semi-inbound cost based on BOM code

Co-authored-by: aider (openai/DeepSeek-V3.2-Thinking) <aider@aider.chat>

inventory-web/src/views/stock/inbound/semi.vue

@@ -807,11 +807,24 @@ const form = reactive({
 })
 
 // === 监听计算总成本 ===
-watch([() => form.unit_total_cost, () => form.in_quantity], ([unit, qty]) => {
-  const unitNum = Number(unit || 0)
-  const qtyNum = Number(qty || 1)
-  form.total_price = Number((unitNum * qtyNum).toFixed(2))
-})
+const computeTotalPrice = () => {
+  let unitCost = 0
+  if (form.bom_code) {
+    // 如果BOM编号有值，则单价采用基于BOM成本 (unit_total_cost)
+    unitCost = Number(form.unit_total_cost || 0)
+  } else {
+    // 如果BOM编号为空，则单价采用估算成本 (raw_material_cost)
+    unitCost = Number(form.raw_material_cost || 0)
+  }
+  const qty = Number(form.in_quantity || 1)
+  form.total_price = Number((unitCost * qty).toFixed(2))
+}
+
+watch(
+  () => [form.bom_code, form.unit_total_cost, form.raw_material_cost, form.in_quantity],
+  () => computeTotalPrice(),
+  { immediate: true, deep: false }
+)
 
 // ------------------------------------
 // BOM Search Logic