fix: [order] 견적→수주 변환 개소별 분리 구현

- CreateFromQuoteRequest 검증 규칙 추가
- Order 모델 견적 연동 관계 보강
- OrderService 변환 시 개소별 분리 로직

app/Models/Orders/Order.php

@@ -340,4 +340,46 @@ public static function createFromQuote(Quote $quote, string $orderNo): self
             ],
         ]);
     }
+
+    /**
+     * 견적의 개소(location) 단위로 수주 생성
+     * 다중 개소 견적 → 개소별 독립 수주
+     */
+    public static function createFromQuoteLocation(Quote $quote, string $orderNo, array $locItem, ?array $bomResult): self
+    {
+        $qty = (int) ($locItem['quantity'] ?? 1);
+        $grandTotal = $bomResult['grand_total'] ?? 0;
+        $supplyAmount = $grandTotal * $qty;
+        $floor = $locItem['floor'] ?? '';
+        $symbol = $locItem['code'] ?? '';
+        $locLabel = trim("{$floor} {$symbol}") ?: '';
+        $siteName = $quote->site_name;
+        if ($locLabel) {
+            $siteName = "{$siteName} [{$locLabel}]";
+        }
+
+        return new self([
+            'tenant_id' => $quote->tenant_id,
+            'quote_id' => $quote->id,
+            'order_no' => $orderNo,
+            'order_type_code' => self::TYPE_ORDER,
+            'status_code' => self::STATUS_DRAFT,
+            'client_id' => $quote->client_id,
+            'client_name' => $quote->client?->name,
+            'client_contact' => $quote->contact,
+            'site_name' => $siteName,
+            'quantity' => $qty,
+            'supply_amount' => $supplyAmount,
+            'tax_amount' => round($supplyAmount * 0.1, 2),
+            'total_amount' => round($supplyAmount * 1.1, 2),
+            'delivery_date' => $quote->completion_date,
+            'memo' => $quote->remarks,
+            'options' => [
+                'manager_name' => $quote->manager,
+                'product_code' => $locItem['productCode'] ?? null,
+                'location_floor' => $floor,
+                'location_code' => $symbol,
+            ],
+        ]);
+    }
 }