refactor:거래처 유형/분류를 사업자등록증 양식(업태/종목)으로 변경

- select → 자유 텍스트 입력으로 변경
- OCR에서 업태/종목 직접 매핑
- 컨트롤러 enum 검증 제거
- 필터 동적 옵션, 통계 카드 간소화

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Http/Controllers/Finance/TradingPartnerController.php

@@ -63,9 +63,8 @@ public function index(Request $request): JsonResponse
         $allPartners = TradingPartner::forTenant($tenantId);
         $stats = [
             'total' => (clone $allPartners)->count(),
-            'vendor' => (clone $allPartners)->where('type', 'vendor')->count(),
-            'freelancer' => (clone $allPartners)->where('type', 'freelancer')->count(),
             'active' => (clone $allPartners)->where('status', 'active')->count(),
+            'inactive' => (clone $allPartners)->where('status', 'inactive')->count(),
         ];
 
         return response()->json([
@@ -79,8 +78,8 @@ public function store(Request $request): JsonResponse
     {
         $request->validate([
             'name' => 'required|string|max:100',
-            'type' => 'required|in:vendor,freelancer',
-            'category' => 'required|string|max:50',
+            'type' => 'nullable|string|max:100',
+            'category' => 'nullable|string|max:100',
         ]);
 
         $tenantId = session('selected_tenant_id', 1);
@@ -88,8 +87,8 @@ public function store(Request $request): JsonResponse
         $partner = TradingPartner::create([
             'tenant_id' => $tenantId,
             'name' => $request->input('name'),
-            'type' => $request->input('type', 'vendor'),
-            'category' => $request->input('category', '기타'),
+            'type' => $request->input('type'),
+            'category' => $request->input('category'),
             'biz_no' => $request->input('bizNo'),
             'bank_account' => $request->input('bankAccount'),
             'contact' => $request->input('contact'),
@@ -127,8 +126,8 @@ public function update(Request $request, int $id): JsonResponse
 
         $request->validate([
             'name' => 'required|string|max:100',
-            'type' => 'required|in:vendor,freelancer',
-            'category' => 'required|string|max:50',
+            'type' => 'nullable|string|max:100',
+            'category' => 'nullable|string|max:100',
         ]);
 
         $partner->update([