========================================
Sync Customers Table
Source: MySQL (app_id = 5006, sync = 0)
Target: PostgreSQL (app_id = 1003)
Batch Size: 50 records
========================================

Step 1: Connecting to MySQL...
✓ MySQL connected

Step 2: Connecting to PostgreSQL...
✓ PostgreSQL connected

Step 3: Reading PostgreSQL schema...
  ✓ Found 35 columns

Step 4: Fetching unsynced records from MySQL (LIMIT 50)...
  ✓ No unsynced records found