feat: add tenant content management features for superadmin

- Implemented API endpoints for listing tenant contents and updating content status.
- Added Swagger documentation for new endpoints:
  - GET /super/v1/tenants/{tenantID}/contents
  - PATCH /super/v1/tenants/{tenantID}/contents/{contentID}/status
- Created DTOs for content item and status update form.
- Enhanced frontend to support content management in the tenant detail page.
- Added search and filter functionalities for tenant contents.
- Implemented unpublish functionality with confirmation dialog.
- Updated service layer to handle new content management logic.

frontend/superadmin/src/service/ContentService.js

@@ -0,0 +1,70 @@
+import { requestJson } from './apiClient';
+
+function normalizeItems(items) {
+    if (Array.isArray(items)) return items;
+    if (items && typeof items === 'object') return [items];
+    return [];
+}
+
+export const ContentService = {
+    async listTenantContents(
+        tenantID,
+        {
+            page,
+            limit,
+            keyword,
+            status,
+            visibility,
+            user_id,
+            published_at_from,
+            published_at_to,
+            created_at_from,
+            created_at_to,
+            sortField,
+            sortOrder
+        } = {}
+    ) {
+        if (!tenantID) throw new Error('tenantID is required');
+
+        const iso = (d) => {
+            if (!d) return undefined;
+            const date = d instanceof Date ? d : new Date(d);
+            if (Number.isNaN(date.getTime())) return undefined;
+            return date.toISOString();
+        };
+
+        const query = {
+            page,
+            limit,
+            keyword,
+            status,
+            visibility,
+            user_id,
+            published_at_from: iso(published_at_from),
+            published_at_to: iso(published_at_to),
+            created_at_from: iso(created_at_from),
+            created_at_to: iso(created_at_to)
+        };
+        if (sortField && sortOrder) {
+            if (sortOrder === 1) query.asc = sortField;
+            if (sortOrder === -1) query.desc = sortField;
+        }
+
+        const data = await requestJson(`/super/v1/tenants/${tenantID}/contents`, { query });
+        return {
+            page: data?.page ?? page ?? 1,
+            limit: data?.limit ?? limit ?? 10,
+            total: data?.total ?? 0,
+            items: normalizeItems(data?.items)
+        };
+    }
+    ,
+    async updateTenantContentStatus(tenantID, contentID, { status } = {}) {
+        if (!tenantID) throw new Error('tenantID is required');
+        if (!contentID) throw new Error('contentID is required');
+        return requestJson(`/super/v1/tenants/${tenantID}/contents/${contentID}/status`, {
+            method: 'PATCH',
+            body: { status }
+        });
+    }
+};