refactor: migrate Markdown to AsciiDoc

CHANGELOG.adoc

@@ -0,0 +1,71 @@
+== Changelog
+
+All notable changes to `+ipv6-tools+` will be documented in this file.
+
+This file is generated from conventional commits by the
+https://github.com/hyperpolymath/standards/blob/main/.github/workflows/changelog-reusable.yml[`+changelog-reusable.yml+`]
+workflow (`+hyperpolymath/standards#206+`). Adopt the workflow in this
+repo’s CI to keep this file in sync automatically — see
+https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml[`+templates/cliff.toml+`]
+for the canonical config.
+
+The format follows https://keepachangelog.com/en/1.1.0/[Keep a
+Changelog]; this project aims to follow
+https://semver.org/spec/v2.0.0.html[Semantic Versioning].
+
+=== [Unreleased]
+
+==== Added
+
+* feat(crg): add crg-grade and crg-badge justfile recipes
+* feat: add stapeln.toml container definition
+* feat: deploy UX Manifesto infrastructure
+* feat: add CLADE.a2ml — clade taxonomy declaration
+* feat: add RSR template structure and project metadata
+* feat: create ipv6-tools monorepo
+
+==== Fixed
+
+* fix(ci): bump a2ml/k9-validate-action pins to canonical (standards#85)
+(#10)
+* fix(ci): sync hypatia-scan.yml to canonical (kill cd-scanner build
+drift) (#9)
+* fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+* fix(ci): adopt canonical hypatia-scan.yml (env.HOME/scanner-layout +
+Comment-step gate) (#6)
+* fix(ci): repair YAML block-scalar in workflow-linter Check Permissions
+step (#4)
+* fix(scorecard): enforce granular permissions and add fuzzing
+placeholder
+* fix(ci): Resolve workflow-linter self-matching and metadata issues
+* fix: correct email jonathan.jewell → j.d.a.jewell
+* fix: global AGPL-3.0-or-later → PMPL-1.0-or-later replacement
+* fix(license): SPDX AGPL-3.0 → PMPL-1.0-or-later in dotfiles
+
+==== Changed
+
+* refactor: migrate 6SCM → 6A2 (.scm → .a2ml format)
+
+==== Documentation
+
+* docs: add TEST-NEEDS.md (CRG C)
+* docs: add EXPLAINME.adoc — prove-it file backing README claims
+
+==== CI
+
+* ci: redistribute concurrency-cancel guard to read-only check workflows
+(#12)
+* ci: fix nonexistent actions/upload-artifact SHA pin (#8)
+* ci: bump actions/upload-artifact SHA to current v4 (#3)
+* ci: SHA-pin hyperpolymath validate-actions in dogfood-gate
+* ci: deploy dogfood-gate, fix hypatia-scan, add pre-commit hooks
+
+=== Pre-history
+
+Prior commits to this file’s introduction are recorded in git history
+but not formally classified into Keep-a-Changelog sections. To backfill,
+run `+git cliff -o CHANGELOG.md+` locally using the canonical
+https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml[`+cliff.toml+`]
+— this is one-shot mechanical work.
+
+'''''