feat: [org-chart] 부서 숨기기 상태 DB 저장

- departments.options JSON 컬럼에 orgchart_hidden 플래그 저장
- 숨기기/복원 시 API 호출하여 영구 저장
- 페이지 로드 시 DB에서 숨김 상태 복원

app/Http/Controllers/RdController.php

@@ -177,6 +177,33 @@ public function orgChartReorderDepts(Request $request): JsonResponse
         return response()->json(['success' => true]);
     }
 
+    /**
+     * 조직도 - 부서 숨기기/표시 토글
+     */
+    public function orgChartToggleHide(Request $request): JsonResponse
+    {
+        $request->validate([
+            'department_id' => 'required|integer',
+            'hidden' => 'required|boolean',
+        ]);
+
+        $tenantId = session('selected_tenant_id');
+        $dept = Department::where('tenant_id', $tenantId)
+            ->where('id', $request->department_id)
+            ->first();
+
+        if (! $dept) {
+            return response()->json(['success' => false, 'message' => '부서를 찾을 수 없습니다.'], 404);
+        }
+
+        $options = $dept->options ?? [];
+        $options['orgchart_hidden'] = $request->hidden;
+        $dept->options = $options;
+        $dept->save();
+
+        return response()->json(['success' => true]);
+    }
+
     /**
      * 중대재해처벌법 실무 점검
      */

app/Models/Tenants/Department.php

@@ -26,6 +26,7 @@ class Department extends Model
         'parent_id' => 'int',
         'is_active' => 'bool',
         'sort_order' => 'int',
+        'options' => 'array',
     ];
 
     protected $hidden = [

resources/views/rd/org-chart.blade.php

@@ -127,7 +127,7 @@ function orgChart() {
         deptSortables: [],
         empSortables: [],
         unassignedSortable: null,
-        hiddenDepts: new Set(),
+        hiddenDepts: new Set(@json($departments->filter(fn($d) => ($d->options['orgchart_hidden'] ?? false))->pluck('id')->values())),
         dblClickDept: null,
         execTitles: ['대표이사', '사장', '부사장', '회장', '부회장'],
 
@@ -414,11 +414,25 @@ function orgChart() {
             this.hiddenDepts.add(deptId);
             this.dblClickDept = null;
             this.renderTree();
+            this.saveHideState(deptId, true);
         },
 
         restoreDept(deptId) {
             this.hiddenDepts.delete(deptId);
             this.renderTree();
+            this.saveHideState(deptId, false);
+        },
+
+        async saveHideState(deptId, hidden) {
+            this.saving = true;
+            try {
+                await fetch('{{ route("rd.org-chart.toggle-hide") }}', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json', 'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').content, 'Accept': 'application/json' },
+                    body: JSON.stringify({ department_id: deptId, hidden }),
+                });
+            } catch (e) { console.error('숨기기 저장 실패:', e); }
+            finally { this.saving = false; }
         },
 
         get hiddenDeptList() {

routes/web.php

@@ -393,6 +393,7 @@
         Route::post('/org-chart/unassign', [RdController::class, 'orgChartUnassign'])->name('org-chart.unassign');
         Route::post('/org-chart/reorder', [RdController::class, 'orgChartReorder'])->name('org-chart.reorder');
         Route::post('/org-chart/reorder-depts', [RdController::class, 'orgChartReorderDepts'])->name('org-chart.reorder-depts');
+        Route::post('/org-chart/toggle-hide', [RdController::class, 'orgChartToggleHide'])->name('org-chart.toggle-hide');
 
         // 중대재해처벌법 실무 점검
         Route::get('/safety-audit', [RdController::class, 'safetyAudit'])->name('safety-audit');