CodexFold v0.1.0

First standalone read-only release.\n\n- Discovers Codex sessions from an explicit or default Codex home\n- Measures exact raw JSON field, complete-record, and CDC duplication\n- Uses a disk-backed SQLite index with bounded memory\n- Detects active rollouts that change during scanning\n- Provides JSON and human-readable output\n- Includes macOS, Linux, and Windows CI\n\nNo session or Codex state mutation is available in this release.