Processes all eligible records for a single entity configuration.
The ArchiveConfigurationEntity record defining which entity/fields to archive
The parent ArchiveConfiguration record
The current ArchiveRun record for logging
Initialized storage manager for writing documents
User context for all database operations
Aggregated counts and bytes for this entity
Handles batch processing of records for a single entity within an archive run. Resolves the appropriate driver, queries eligible records, and processes them in configurable batch sizes.