Freeze CHANGELOG.md; git history is the changelog now

AGENTS.md

@@ -58,7 +58,7 @@ Three layers, all data-driven via Hiera (`hiera.yaml` defines two separate hiera
 1. Create or reuse a repolist in `data/sync/repolists/` and a config in `data/sync/configs/` (copy a recent dated one; the naming convention is `YYYYMMDD-description.yaml`).
 2. Point the `latest.yaml` symlinks at them (optional, but lets you omit `config=`/`repolist=`).
 3. If the change needs new behavior, add/modify a task (one-off transformations) or a profile (persistent baseline files), and list any new stage in the config.
-4. Record notable changes in `CHANGELOG.md` (Keep a Changelog format; helper tasks in `rakelib/`).
+4. Do **not** update `CHANGELOG.md` — it is frozen (no versioned releases to collect entries, and per-PR edits conflicted with every in-flight PR). Descriptive squash-merge PR titles are the changelog.
 
 ## Current context
 

CHANGELOG.md

@@ -1,12 +1,17 @@
 # Changelog
 
-All notable changes to this project will be documented in this file.
+**This changelog is frozen.** puppetsync has no versioned releases, so
+per-PR changelog entries only created merge conflicts without a release to
+collect them. Ongoing history lives in the [git log] and [merged pull
+requests], whose squash-merge titles serve as the changelog.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+The entries below are historical. Section headings are either Jira-era
+session tags or the date the entries were recorded.
 
+[git log]: https://github.com/simp/puppetsync/commits/main/
+[merged pull requests]: https://github.com/simp/puppetsync/pulls?q=is%3Apr+is%3Amerged
 
-
-## [Unreleased]
+## [2026-07-29] (previously Unreleased)
 
 ### Added
 
@@ -15,15 +20,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     checks over Hiera data, task metadata, and the `latest.yaml` symlinks
   - Puppet syntax validation and a Bolt plan smoke test using openbolt
 
-- New GHA workflow, `add_new_issue_to_triage_project.yml`
-- New task, `generate_reference_md`
-  - Generates up-to-date `REFERENCE.md`
-  - If changed: stages and commits to git IMMEDIATELY
-- New task and plan, `release_pupmods`
- - Clone, tag, and push GitHub release for each repo in the repolist
-- New GHA PR tests workflow override for pupmod simp/simp
-  - Parallelizes spec tests so they don't take three hours to run
-
 ### Changed
 
 - Repo setup no longer wipes `_repos/` and re-clones everything on each run
@@ -38,7 +34,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     them; amend detection also works for single-line commit messages)
   - Unchanged repos skip the GitHub fork/push/PR stages
   - The final summary reports three buckets: ok / unchanged / failed
-- Update GHA ruby tag deploy workflows to use `$GITHUB_OUTPUT`, Ruby 2.7
 - `puppetsync::pipeline_stage` now raises a clear error when a stage block
   returns something other than Bolt results, instead of dropping into an
   interactive `binding.pry` debugger that would hang unattended runs (#52)
@@ -49,7 +44,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   broken on systems where `/bin/sh` is not bash (e.g. Ubuntu/dash): the old
   backticks + `&>` check always reported the branch as existing, so checkout
   failed on the first run. Found by the new idempotency e2e test in CI.
-- Rubygem GHA workflow bug that prevented tagged releases/pre-releases (x2)
 
 ### Removed
 
@@ -59,9 +53,38 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     stages, the `profile::pupmod::gitlab_ci` class (its templates were
     already gone), the `role::pupmod_gitlabci_only` role, and the `gitlab`
     gem
+
+## [2023-08-03] (previously Unreleased)
+
+### Added
+
+- New task, `generate_reference_md`
+  - Generates up-to-date `REFERENCE.md`
+  - If changed: stages and commits to git IMMEDIATELY
+- New task and plan, `release_pupmods`
+  - Clone, tag, and push GitHub release for each repo in the repolist
+- New GHA PR tests workflow override for pupmod simp/simp
+  - Parallelizes spec tests so they don't take three hours to run
+
+### Fixed
+
+- Rubygem GHA workflow bug that prevented tagged releases/pre-releases (x2)
+
+### Removed
+
 - Removed `puppet-lint-empty_string-check` from pupmod Gemfiles so they can
   install simp-rake-helpers 5.20.0
 
+## [2023-04-17] (previously Unreleased)
+
+### Added
+
+- New GHA workflow, `add_new_issue_to_triage_project.yml`
+
+### Changed
+
+- Update GHA ruby tag deploy workflows to use `$GITHUB_OUTPUT`, Ruby 2.7
+
 ## [issue_3] - 2023-03-27
 
 ### Added
@@ -464,4 +487,3 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 [SIMP-10392]: https://github.com/op-ct/puppetsync/compare/SIMP-10580...SIMP-10392
 [SIMP-10633]: https://github.com/op-ct/puppetsync/compare/SIMP-10392...SIMP-10633
 [issue_3]: https://github.com/op-ct/puppetsync/compare/SIMP-10633...issue_3
-[Unreleased]: https://github.com/op-ct/puppetsync/compare/issue_3...HEAD