Migrate error log to batched logging system

[HyeockJinKim]

Objective

Migrate error log creation from direct DB writes to the batched logging system.

Implementation Details

Repository Changes

1. Update ErrorLogDBSource
   • Add bulk_create() method using BulkCreator
   • Keep existing create() for backward compatibility
2. Update ErrorLogRepository
   • Route create() calls to queue manager
   • Add flush() method

Service Changes

1. Update ErrorLogService
   • Change create() to enqueue
   • Return immediately

Configuration

• Batch size: 100 (default)
• Flush interval: 5 seconds
• Redis backup: disabled (not critical)

Testing

• Test error log enqueueing
• Test batch creation
• Integration tests

Acceptance Criteria

• Error logs written in batches
• No functional regression
• Reduced DB load
• All tests passing

JIRA Issue: BA-4235