fix:영업파트너 모달 높이 고정+스크롤 적용, salesPartner 레코드 보유자만 검색

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

app/Http/Controllers/ESign/EsignApiController.php

@@ -31,7 +31,7 @@ public function searchPartners(Request $request): JsonResponse
         $q = trim($request->input('q', ''));
 
         $query = User::where('is_active', true)
-            ->whereIn('role', ['sales', 'manager'])
+            ->whereHas('salesPartner')
             ->with('salesPartner');
 
         if ($q !== '') {

resources/views/esign/create.blade.php

@@ -308,18 +308,18 @@ className={`flex items-center gap-1.5 ${i + 1 < currentStep ? 'cursor-pointer' :
     return (
         <div className="fixed inset-0 z-50 flex items-center justify-center" onClick={onClose}>
             <div className="absolute inset-0 bg-black/40" />
-            <div className="relative bg-white rounded-xl shadow-2xl w-full max-w-lg mx-4" onClick={e => e.stopPropagation()}>
-                <div className="flex items-center justify-between px-5 py-3 border-b">
+            <div className="relative bg-white rounded-xl shadow-2xl w-full max-w-lg mx-4 flex flex-col" style={{ maxHeight: 'min(480px, 80vh)' }} onClick={e => e.stopPropagation()}>
+                <div className="flex items-center justify-between px-5 py-3 border-b flex-shrink-0">
                     <h3 className="text-sm font-semibold text-gray-900">영업파트너 검색</h3>
                     <button onClick={onClose} className="text-gray-400 hover:text-gray-600 text-lg">&times;</button>
                 </div>
-                <div className="px-5 py-3">
+                <div className="px-5 py-3 flex-shrink-0">
                     <input ref={inputRef} type="text" value={query}
                            onChange={e => handleInput(e.target.value)} onKeyDown={handleKeyDown}
                            placeholder="이름, 이메일 또는 전화번호로 검색..."
                            className="w-full border border-gray-300 rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none" />
                 </div>
-                <div className="px-5 pb-4 max-h-[320px] overflow-y-auto">
+                <div className="px-5 pb-4 overflow-y-auto flex-1 min-h-0">
                     {loading && <p className="text-xs text-gray-400 py-3 text-center">검색 중...</p>}
                     {!loading && results.length === 0 && <p className="text-xs text-gray-400 py-3 text-center">검색 결과가 없습니다.</p>}
                     {!loading && results.map((p, i) => (