feat:파트너 검색에 포지션(역할) 필드 추가

- searchPartners 역할 필터를 sales만 → sales/manager 모두 포함하도록 확장
- 사용자 역할(영업파트너/상담매니저)을 position 필드로 API 응답에 추가
- handlePartnerSelect에 position 매핑 추가 (key: position, label: 포지션/직책/역할)
- PartnerSearchModal 검색 결과에 position 배지 표시

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

app/Http/Controllers/ESign/EsignApiController.php

@@ -37,9 +37,11 @@ public function searchPartners(Request $request): JsonResponse
         $query = User::where('is_active', true)
             ->whereHas('userRoles', function ($w) use ($tenantId) {
                 $w->where('tenant_id', $tenantId)
-                  ->whereHas('role', fn($r) => $r->where('name', 'sales'));
+                  ->whereHas('role', fn($r) => $r->whereIn('name', ['sales', 'manager']));
             })
-            ->with('salesPartner');
+            ->with(['salesPartner', 'userRoles' => function ($q) use ($tenantId) {
+                $q->where('tenant_id', $tenantId)->with('role');
+            }]);
 
         if ($q !== '') {
             $query->where(function ($w) use ($q) {
@@ -51,8 +53,11 @@ public function searchPartners(Request $request): JsonResponse
 
         $users = $query->orderBy('name')->limit(20)->get();
 
-        $data = $users->map(function ($user) {
+        $roleLabels = ['sales' => '영업파트너', 'manager' => '상담매니저'];
+
+        $data = $users->map(function ($user) use ($roleLabels) {
             $sp = $user->salesPartner;
+            $roles = $user->userRoles->map(fn($ur) => $roleLabels[$ur->role?->name] ?? null)->filter()->values();
             return [
                 'id' => $user->id,
                 'name' => $user->name,
@@ -61,6 +66,7 @@ public function searchPartners(Request $request): JsonResponse
                 'company_name' => $sp?->company_name,
                 'biz_no' => $sp?->biz_no,
                 'address' => $sp?->address,
+                'position' => $roles->implode('/'),
             ];
         });