"""
Legacy CDC / FastCDC utilities restored from HELIX_RSA_LABS.

This namespace wraps the content-defined chunking implementation that was part
of the historical CDC stack.

Historical context:
- Original location: /home/voidstr3m33/echo_labs/helix/labs/HELIX_RSA_LABS/ccm_chunking.py
- Algorithm: FastCDC with rolling hash
- Default: 64 KiB chunks (32-128 KiB range)
- Used for: Content-defined chunking robust to data shifts

Components:
- legacy_fastcdc: FastCDC chunking implementation
- scan_compressed: REMOVED (Phase 7) - historical concept, no implementation in this repo
"""

__version__ = "1.0.0-legacy"
