Revision history for Data-TopK-Shared

0.02      2026-07-21
          - Add time-decayed mode (new_decayed/new_decayed_memfd, half_life,
            is_decayed) for recency-weighted top-k.
          - On-disk format change: 0.01 files cannot be opened by 0.02.
          - Resolve argument magic before capturing the path string.

0.01      2026-07-10
          - Initial release.
