feat: Add express-async-errors for improved error handling

- Integrated express-async-errors to automatically handle errors in async route handlers, enhancing the overall error management in the application.
- Updated app.ts to include the express-async-errors import for global error handling.
- Removed redundant logging statements in admin and user menu retrieval functions to streamline the code and improve readability.
- Adjusted logging levels from info to debug for less critical logs, ensuring that important information is logged appropriately without cluttering the logs.

backend-node/src/services/flowExecutionService.ts

@@ -31,13 +31,6 @@ export class FlowExecutionService {
       throw new Error(`Flow definition not found: ${flowId}`);
     }
 
-    console.log("🔍 [getStepDataCount] Flow Definition:", {
-      flowId,
-      dbSourceType: flowDef.dbSourceType,
-      dbConnectionId: flowDef.dbConnectionId,
-      tableName: flowDef.tableName,
-    });
-
     // 2. 플로우 단계 조회
     const step = await this.flowStepService.findById(stepId);
     if (!step) {
@@ -59,36 +52,21 @@ export class FlowExecutionService {
     // 5. 카운트 쿼리 실행 (내부 또는 외부 DB)
     const query = `SELECT COUNT(*) as count FROM ${tableName} WHERE ${where}`;
 
-    console.log("🔍 [getStepDataCount] Query Info:", {
-      tableName,
-      query,
-      params,
-      isExternal: flowDef.dbSourceType === "external",
-      connectionId: flowDef.dbConnectionId,
-    });
-
     let result: any;
     if (flowDef.dbSourceType === "external" && flowDef.dbConnectionId) {
       // 외부 DB 조회
-      console.log(
-        "✅ [getStepDataCount] Using EXTERNAL DB:",
-        flowDef.dbConnectionId
-      );
       const externalResult = await executeExternalQuery(
         flowDef.dbConnectionId,
         query,
         params
       );
-      console.log("📦 [getStepDataCount] External result:", externalResult);
       result = externalResult.rows;
     } else {
       // 내부 DB 조회
-      console.log("✅ [getStepDataCount] Using INTERNAL DB");
       result = await db.query(query, params);
     }
 
     const count = parseInt(result[0].count || result[0].COUNT);
-    console.log("✅ [getStepDataCount] Final count:", count);
     return count;
   }