feat(config): implement dynamic security blocklist and home marketing popup with admin controls

server/src/db/repository.ts

@@ -1279,6 +1279,23 @@ export class MysqlRepository {
     return result;
   }
 
+  async getPlatformConfigByKey(configKey: string): Promise<any> {
+    const [rows]: any = await pool.query(`
+      SELECT id, config_key as configKey, name, value_json as valueJson, description, status
+      FROM platform_configs
+      WHERE config_key = ?
+    `, [configKey]);
+    if (!rows || rows.length === 0) return null;
+    const r = rows[0];
+    let val = r.valueJson;
+    if (typeof val === 'string') {
+      try {
+        val = JSON.parse(val);
+      } catch (_) {}
+    }
+    return { ...r, valueJson: val };
+  }
+
   async getAdminPlatformConfigs(): Promise<any[]> {
     const [rows]: any = await pool.query(`
       SELECT id, config_key as configKey, name, value_json as valueJson, description, status,