docs: seed CHANGELOG.md (Keep-a-Changelog format)

CHANGELOG.md

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+<!--
+SPDX-License-Identifier: MPL-2.0
+SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
+-->
+
+# Changelog
+
+All notable changes to `blocky-writer` will be documented in this file.
+
+This file is generated from conventional commits by the
+[`changelog-reusable.yml`](https://github.com/hyperpolymath/standards/blob/main/.github/workflows/changelog-reusable.yml)
+workflow (`hyperpolymath/standards#206`). Adopt the workflow in this repo's CI to keep this file in sync automatically — see
+[`templates/cliff.toml`](https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml)
+for the canonical config.
+
+The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/);
+this project aims to follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+- feat(crg): add crg-grade and crg-badge justfile recipes
+- feat: add wokelangiser accessibility+consent manifest
+- feat: add UX Justfile with doctor, tour, help-me, assail recipes
+- feat: add stapeln.toml layer-based container definition\n\nConverted from existing Containerfile to stapeln format.\nIncludes Chainguard base, security hardening, SBOM generation.\n\nCo-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
+- feat: deploy UX Manifesto infrastructure
+- feat: add CLADE.a2ml — clade taxonomy declaration
+- feat: add mirror.yml workflow for GitLab/Bitbucket mirroring
+
+### Fixed
+
+- fix(ci): sync hypatia-scan.yml to canonical (#5)
+- fix(ci): adopt canonical hypatia-scan.yml (#4)
+- fix(scorecard): enforce granular permissions and add fuzzing placeholder
+- fix(ci): Resolve workflow-linter self-matching and metadata issues
+- fix: SPDX headers (AGPL→PMPL), email, author name
+- fix(license): SPDX AGPL-3.0 → PMPL-1.0-or-later in dotfiles
+- fix: security hardening and CI workflow pinning
+
+### Changed
+
+- refactor: migrate 6SCM → 6A2 (.scm → .a2ml format)
+
+### Documentation
+
+- docs: add TEST-NEEDS.md (CRG C)
+- docs: add TEST-NEEDS.md (CRG C)
+- docs: restore README.md lost in Floor Raise campaign
+- docs: add EXPLAINME.adoc — prove-it file backing README claims
+- docs: add 0-AI-MANIFEST.a2ml (RSR compliance)
+
+### CI
+
+- ci: deploy dogfood-gate, fix hypatia-scan, add pre-commit hooks
+- ci: migrate CodeQL Action v3 → v4
+- ci: update SHA pins for codeql-action and trufflehog
+- ci: deploy missing standard workflows (10 added)
+
+## 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 [`cliff.toml`](https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml) — this is one-shot mechanical work.
+
+---
+
+<!-- This file was seeded by the 2026-05-26 estate tech-debt audit follow-up (Row-2 Phase 3); see [`hyperpolymath/standards/docs/audits/2026-05-26-estate-documentation-debt.md`](https://github.com/hyperpolymath/standards/blob/main/docs/audits/2026-05-26-estate-documentation-debt.md). -->