Import History Tracking and Display

Track and display history of completed QuickBooks imports for audit and reference.

Note: - Record each import attempt in database with metadata - Track: import ID, customer ID, timestamp, date range, status (success/failed/partial) - Track: user who initiated import, transaction count, journal line count - Store reference to S3 CSV file (S3 key/URL) - Track Costpoint push result: success count, failure count, error messages - Details TBD by developer based on available data from transform/push operations - Display import history in UI: table with date, date range, status, record counts, user, download CSV link - Filter/sort by date, status - Allow viewing details of specific import: full metadata, error messages if failed - Consider retention policy for history records

Open questions: - How long should import history be retained? - Should we allow re-running failed imports? - What level of detail should error messages include?