docs: seed CHANGELOG.md (Keep-a-Changelog format) (#45)

## Summary
Adds an initial `CHANGELOG.md` in Keep-a-Changelog format. Recent
commits are bucketed into Added/Fixed/Changed/Documentation/CI from
their conventional-commit prefixes.

Closes **Row-2 Phase 3** of the 2026-05-26 estate tech-debt audit chain
for this repo. The audit
([standards#197](hyperpolymath/standards#197))
flagged 180/279 repos missing CHANGELOG (65% gap).

## Adopting auto-regeneration
For ongoing auto-regeneration, adopt the
[`changelog-reusable.yml`](https://github.com/hyperpolymath/standards/blob/main/.github/workflows/changelog-reusable.yml)
workflow
([standards#206](hyperpolymath/standards#206))
in this repo's CI. Uses the canonical
[`templates/cliff.toml`](https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

CHANGELOG.md

@@ -0,0 +1,62 @@
+<!--
+SPDX-License-Identifier: MPL-2.0
+SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
+-->
+
+# Changelog
+
+All notable changes to `oblibeny` 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: integrate Oblibeny with Svalinn/Vordr verified container stack
+- feat: drive Oblibeny to 100% production-ready completion
+- feat: add comprehensive static analyzer with resource bounds
+- feat: complete oblibeny crypto FFI (90% → 100%)
+- feat: implement complete crypto FFI with liboqs and libsodium
+- feat: consolidate toolchain and examples into main repo
+- feat: complete first Lago Grey minimal image (14.6 MB) + ecosystem integration
+- feat(ci): enable Hypatia scanning
+
+### Fixed
+
+- fix(ci): sync hypatia-scan.yml to canonical (kill cd-scanner build drift) (#34)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): bump actions/checkout v4.1.1→v6.0.2 in workflow-linter.yml (Node.js 24 compat)
+- fix(ci): bump actions/checkout v4.1.1→v6.0.2 in codeql.yml (Node.js 24 compat)
+- fix: remove duplicate SCM files from root
+- fix(security): update editorconfig SHA and CodeQL language
+- fix: OpenSSF Scorecard compliance (permissions, SHA-pins, SAST)
+
+### Documentation
+
+- docs: update README and STATE.scm to reflect 100% completion
+- docs: update SCM files with project information
+- docs: add CONTRIBUTING.md
+- docs: add SCM checkpoint files
+- docs: add checkpoint files for state tracking
+
+### CI
+
+- ci: bump actions/upload-artifact SHA to current v4 (#30)
+- ci(secret-scanner): drop duplicate --fail from trufflehog extra_args (#29)
+- ci: fix workflow-linter YAML parse error + self-flag bug
+
+## 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). -->