feat(quote): quote_type 컬럼 추가 및 건설 견적 필터링 구현

- quotes 테이블에 quote_type 컬럼 추가 (manufacturing/construction)
- Quote 모델에 TYPE 상수 및 스코프 메서드 추가
- QuoteService.index()에 quote_type 필터 적용
- QuoteService.upsertFromSiteBriefing()에 construction 타입 설정
- QuoteIndexRequest에 quote_type 유효성 검증 추가
- 기존 site_briefing_id 있는 데이터는 construction으로 자동 업데이트

Co-Authored-By: Claude <noreply@anthropic.com>

app/Models/Quote/Quote.php

@@ -6,6 +6,7 @@
 use App\Models\Members\User;
 use App\Models\Orders\Client;
 use App\Models\Orders\Order;
+use App\Models\Tenants\SiteBriefing;
 use App\Traits\BelongsToTenant;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
@@ -19,7 +20,9 @@ class Quote extends Model
 
     protected $fillable = [
         'tenant_id',
+        'quote_type',
         'order_id',
+        'site_briefing_id',
         'quote_number',
         'registration_date',
         'receipt_date',
@@ -90,6 +93,18 @@ class Quote extends Model
         'deleted_at' => 'datetime',
     ];
 
+    /**
+     * 견적 유형 상수
+     */
+    public const TYPE_MANUFACTURING = 'manufacturing';
+
+    public const TYPE_CONSTRUCTION = 'construction';
+
+    public const TYPES = [
+        self::TYPE_MANUFACTURING,
+        self::TYPE_CONSTRUCTION,
+    ];
+
     /**
      * 제품 카테고리 상수
      */
@@ -100,6 +115,8 @@ class Quote extends Model
     /**
      * 상태 상수
      */
+    public const STATUS_PENDING = 'pending'; // 견적대기 (현장설명회에서 자동생성)
+
     public const STATUS_DRAFT = 'draft';
 
     public const STATUS_SENT = 'sent';
@@ -112,6 +129,16 @@ class Quote extends Model
 
     public const STATUS_CONVERTED = 'converted';
 
+    public const STATUSES = [
+        self::STATUS_PENDING,
+        self::STATUS_DRAFT,
+        self::STATUS_SENT,
+        self::STATUS_APPROVED,
+        self::STATUS_REJECTED,
+        self::STATUS_FINALIZED,
+        self::STATUS_CONVERTED,
+    ];
+
     /**
      * 견적 품목들
      */
@@ -152,6 +179,14 @@ public function order(): BelongsTo
         return $this->belongsTo(Order::class);
     }
 
+    /**
+     * 현장설명회 (자동생성 시 연결)
+     */
+    public function siteBriefing(): BelongsTo
+    {
+        return $this->belongsTo(SiteBriefing::class);
+    }
+
     /**
      * 확정자
      */
@@ -179,6 +214,11 @@ public function updater(): BelongsTo
     /**
      * 상태별 스코프
      */
+    public function scopePending($query)
+    {
+        return $query->where('status', self::STATUS_PENDING);
+    }
+
     public function scopeDraft($query)
     {
         return $query->where('status', self::STATUS_DRAFT);
@@ -225,6 +265,24 @@ public function scopeSteel($query)
         return $query->where('product_category', self::CATEGORY_STEEL);
     }
 
+    /**
+     * 견적 유형별 스코프
+     */
+    public function scopeManufacturing($query)
+    {
+        return $query->where('quote_type', self::TYPE_MANUFACTURING);
+    }
+
+    public function scopeConstruction($query)
+    {
+        return $query->where('quote_type', self::TYPE_CONSTRUCTION);
+    }
+
+    public function scopeOfType($query, string $type)
+    {
+        return $query->where('quote_type', $type);
+    }
+
     /**
      * 날짜 범위 스코프
      */