chore(meta): update CHANGELOG — SAL-7.1 supersession and pypi env before tag

Author: Zer0pa-Architect-Prime

CHANGELOG.md

@@ -4,3 +4,5 @@
 - Replaced the sibling-runtime wrapper with a standalone `zpe_image_codec` package.
 - Removed internal-era tracked files and rebuilt the public surface around a fresh falsification path.
 - Installed `Zer0pa Source-Available License v7.0` at the repo root and aligned the public surface to that license posture.
+- License superseded to SAL v7.1 (counsel-signed-off, 3 May 2026) before first release tag; package metadata, `CITATION.cff`, and `.zenodo.json` updated to `LicenseRef-Zer0pa-SAL-7.1`.
+- Added `environment: pypi` to publish workflow for PyPI Trusted Publishing OIDC resolution.