release-kilroy - SKILL.md Agent Skill

name: release-kilroy description: Use when preparing a Kilroy release — writing release notes, tagging, and publishing via goreleaser on GitHub.

Releasing Kilroy

When to Use

Invoke this skill before cutting a release. Never release without explicit user request.

Sanity Check

Before anything: if something seems off (discontinuous version jump like 0.5→2.0, failing tests, broken code), stop and confirm with the user.

Writing Release Notes

Release notes are user-facing, not code-facing. Write from the perspective of someone running Kilroy pipelines, not someone reading the git log.

Structure

Two sections, in this order:

"New things you can do" — Features that let users do something they couldn't before. Each item: what it is + why you'd care. Priority-ordered (most impactful first).

"Things that got better" — Improvements to existing functionality. Same format: what changed + why it matters. Priority-ordered.

Principles

Feature, benefit. Not "add fan-out parallel handler to engine" but "Run pipeline stages in parallel — fan-out nodes execute concurrently and fan-in collects results."
User verbs, not code verbs. Not "refactor edge selection to use cond evaluator" but "Conditional routing is more reliable — edge conditions are evaluated consistently."
Skip internal-only changes. Test refactors, doc updates, reverts-then-re-lands — users don't care.
Priority order within each section. The things that are most exciting, the things that change daily usage most, then the rest.
Deep-dive the changelog in preparation. Read every commit since the last tag. Skim the files affected so you can tell if there may be changes beyond the commit note, and if so, read the diffs and source code. Group by user-visible impact. Many commits collapse into one release note line. Some commits (chore, test, docs) produce no release note at all.
Read the code, not just the commit messages. Commit messages are often terse or misleading. When a commit touches engine behavior, CLI flags, provider support, or graph semantics, read the actual diff to understand what changed from the user's perspective.

Deriving Release Notes

# 1. Get the full commit list
git log v<PREV>..HEAD --oneline --no-merges

# 2. Get the diffstat for scope
git diff v<PREV>..HEAD --stat | tail -5

# 3. For commits that touch user-facing code, read the diffs
git show <hash> --stat   # what files changed?
git show <hash>          # read the diff if unclear from commit message

# 4. Walk through commits and ask: "What can the user now DO differently?"

For the first release (no previous tag), derive notes from the full project history or a user-specified starting commit.

Example

## What's New

### New things you can do

- **Run pipeline stages in parallel** — Fan-out nodes execute concurrently with
  deterministic fan-in collection. Halves wall-clock time for independent stages.
- **Resume from CXDB** — Interrupted runs can resume from the execution database,
  not just local logs. Works across machines.

### Things that got better

- **Conditional routing is more reliable** — Edge conditions evaluate consistently
  even when upstream stages produce unexpected output shapes.
- **Stale binary detection** — Kilroy warns before running if the binary doesn't
  match HEAD, preventing silent behavior mismatches.

Version Number

Kilroy uses semver. The canonical version lives in internal/version/version.go as var Version = "X.Y.Z". This is the version all builds see — source, binary, and Homebrew. goreleaser also injects it from the git tag at build time via ldflags (belt and suspenders).

Bump this file as part of release prep (step 5). The CI workflow verifies that version.go matches the git tag — a mismatch fails the release.

Decide the bump with the user, but offer a recommendation:

Patch (0.x.Y): Bug fixes, minor improvements
Minor (0.X.0): New capabilities, new providers, meaningful new features
Major (X.0.0): Breaking changes to CLI flags, config format, or graph semantics

Update the README

This is the last step before mechanical release, and requires user approval.

Review README.md against the current state of the product. Read the relevant source code to verify claims — don't trust the README or your memory alone.

For each section:

Is it still accurate? Read the implementing code if unsure. Update or remove if something changed or was removed.
Is there a new capability from this release that belongs in the README? Propose adding it.
Are any sections stale enough to warrant cleanup? Recommend changes to keep it tight.

Present the proposed README changes to the user for approval before proceeding to release steps.

Release Steps

All work happens on a release branch in a worktree — main is untouched until the final atomic fast-forward.

1. Create the release branch

# From the main repo
git fetch origin
git checkout main
git pull --ff-only origin main
git worktree add .worktrees/release-vX.Y.Z -b release/vX.Y.Z main
cd .worktrees/release-vX.Y.Z
go mod download

2. Run the full test suite

# In the worktree
go test ./...

All tests must pass. If any fail, fix them on the release branch before proceeding.

3. Build and run graph validation

# Build from the release branch
go build -o ./kilroy ./cmd/kilroy

# Validate all demo pipelines still parse and pass validation
shopt -s globstar
for f in demo/**/*.dot; do
  ./kilroy attractor validate --graph "$f" || exit 1
done

4. Run E2E and ergonomics checks

scripts/e2e.sh
scripts/check-ergonomics-docs.sh
scripts/check-using-kilroy-skill.sh

5. Prepare the release (on the release branch)

All of these are committed to the release branch:

Bump version in internal/version/version.go to the new version
Write release notes to RELEASE_NOTES.md in the repo root (following the guidelines above). The GitHub Actions workflow passes --release-notes=RELEASE_NOTES.md to goreleaser, which publishes it as the GitHub release body. This file is committed (not gitignored) so it is present at the tagged commit.
Update README with any approved changes
Commit with message like release: vX.Y.Z

6. Fast-forward main

# Back in the main repo working directory
git merge --ff-only release/vX.Y.Z

If --ff-only fails, go back to the worktree and rebase onto main until it can fast-forward.

7. Tag and publish

git push origin main
git tag -a vX.Y.Z -m "vX.Y.Z"
git push origin vX.Y.Z
# GoReleaser takes over from here via GitHub Actions:
#   - Runs go test ./...
#   - Builds cross-platform binaries (linux/darwin/windows x amd64/arm64)
#   - Creates GitHub release with archives and checksums
#   - Updates Homebrew formula in Formula/kilroy.rb

8. Verify the release

Watch GitHub Actions: https://github.com/danshapiro/kilroy/actions
Confirm the GitHub release has 6 platform archives + checksums.txt
Confirm the release notes appear on the GitHub release page

Test Homebrew install:

brew tap danshapiro/kilroy
brew install kilroy
kilroy --version  # should print the new version

9. Clean up

git worktree remove .worktrees/release-vX.Y.Z
git branch -d release/vX.Y.Z

Safety

All release prep happens on a branch in a worktree, so main is never modified until the atomic fast-forward
Commit RELEASE_NOTES.md and any README changes before tagging so the tag points to the right commit
Build the binary from the release branch and verify go test ./... passes before merging
If any step fails, stop and assess, then make recommendations to the user, rather than pushing forward