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+<!--
+SPDX-License-Identifier: MPL-2.0
+SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
+-->
+
+# Changelog
+
+All notable changes to `developer-ecosystem` 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]
+
+### Fixed
+
+- fix(licence): developer-ecosystem — clear scaffold-placeholder leak (superproject) (#76)
+- fix(affine): migrate record literal to #{ } (affinescript#218) (#73)
+- fix(ci): bump a2ml/k9-validate-action pins to canonical (#68)
+- fix(ci): sync hypatia-scan.yml to canonical (#67)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+
+### CI
+
+- ci: redistribute concurrency-cancel guard to read-only check workflows (#72)
+- ci: fix nonexistent actions/upload-artifact SHA pin (Refs standards#48) (#66)
+
+## 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). -->