v0.22.0 — saved-report native gate replay

Quantfit 0.22.0 releases PR #126 individually: saved-report native gate replay.

Released independently from PR #126: saved-report native gate replay.

Original introduction notes follow; the linked completed source acceptance supersedes their historical pending-qualification wording.

• Offline saved-report gate API/CLI (gate --from-report) with exact-byte report
  binding, native policy/refusal precedence, recorded-arm JUnit, portable replay
  bundles and optional composite-action routing. No new inference; bound calibration
  matches recorded scope without authenticating labels or the producing host.
  Functional evidence and limitations: validation/2026-10-09-saved-report-gate/.

The introduced source passed hosted acceptance; release publication separately qualifies the exact versioned distributions. Historical producer versions and run records remain unchanged. No QSR v1 freeze or new scientific GO is claimed.

Local validation: 1862 sparse local tests passed with 34 skipped, plus two separately available numerical properties; full Torch/model proof is hosted. Exact-head hosted CI passed before merging. The protected publishing workflow repeats full qualification and attests the exact distributions before PyPI publication.