Retroactive cleanup of CHANGELOG.md and docs/audit/v1.4.X-summary.md
files. Removes maintainer's real name, specific health figures tied to
the live tenant, internal release-process jargon, and stray German
strings in English-only release notes. Pre-release PII-grep gate added
to the v1.4.20 release pipeline. No git history rewrite.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Marc-Brief plus what-landed / deferred / CI / production-deploy /
v1.4.20-preview sections. Mirrors the v1.4.18 report shape.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>