Epic: Dataset Filtering System

[deepakduggirala]

Enable filtering of dataset contents before push.

Tasks:

• push-filter-parser-engine

  • Implement filter spec parser (glob, regex, size, file type)

• push-filter-apply-to-dir

  • Implement file tree walk and filtering application

• push-filter-dry-run-preview

  • Add dry-run mode to preview matched file paths

• push-filter-metadata-logging

  • Log applied filter config + matched results in metadata

• push-filter-ui-integration

  • UI form for defining filter rules
  • UI component for previewing filtered files