Update Changelog

Update changelog

Specs: Keep a Changelog 1.1.0 · Semantic Versioning 2.0.0

Stack-agnostic. Use git for source-of-truth on changes and KAC for changelog prose.

Command routing

Do not cut a release or bump package.json / thunderstore.toml / etc. unless the user used update-changelog-release (or explicitly asked for a full release in the same message).

Shared preparation

1. Locate changelog — default CHANGELOG.md at repo root; accept a user-provided path. Read the full file.
2. Ensure KAC header exists (add if missing, keep if present):

# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

3. Ensure ## [Unreleased] exists as the first version section (create empty section if missing).
4. Gather changes (parallel when possible):
   • git status
   • git diff and git diff --staged
   • git log -1 --oneline
   • Only for Workflow A with commits argument (see command file): also git log since last release tag or since the newest ## [X.Y.Z] in the changelog, plus matching git diff.

Keep a Changelog rules (required)

• Use only these section headings under a version (omit empty sections):
  • ### Added · ### Changed · ### Deprecated · ### Removed · ### Fixed · ### Security
• No custom sections (“Documentation”, “Misc”, “Internal”).
• Bullets: concise, user impact, not file paths. Link #123 / PRs when known.
• Merge with existing [Unreleased] bullets; refine duplicates instead of repeating.

Details: reference.md

Workflow A — Unreleased only

Goal: Document work in progress under [Unreleased]. Do not rename the section or bump package versions.

1. Complete Shared preparation.
2. Update ## [Unreleased] from git (working tree by default; include recent commits only if the command says so).
3. Do not edit released version sections.
4. In the reply, show the full updated ## [Unreleased] block.
5. If [Unreleased] is non-empty, add a short suggested next version line (e.g. “Likely 0.3.0 (MINOR) when you release — use /update-changelog-release.”). Do not cut the release in this workflow.

Workflow B — Release

Goal: Ship what is in [Unreleased] as a dated version and align product version fields across the repo.

B1 — Refresh Unreleased

Run Workflow A first so [Unreleased] matches current git state (including uncommitted work that belongs in this release).

B2 — Choose semver

1. Read the latest released version from the changelog (first ## [X.Y.Z] or ## [X.Y.Z] - date below [Unreleased]).
2. Classify everything under [Unreleased] using SemVer 2.0.0:
   • PATCH — backwards-compatible fixes only.
   • MINOR — backwards-compatible features.
   • MAJOR — incompatible API/behavior users must react to.
   • 0.y.z — MINOR may include breaking changes; document breaks in bullets.
3. Compute newVersion = bumped latest (e.g. 0.2.0 + MINOR → 0.3.0).
4. State newVersion and rationale in the reply before editing files.

If [Unreleased] is empty, stop and tell the user there is nothing to release.

B3 — Cut changelog

1. Rename ## [Unreleased] → ## [newVersion] - YYYY-MM-DD (ISO 8601; use today unless the user gave a date).
2. Move all ### Added / ### Changed / … content under the new heading (unchanged bullets).
3. Insert a new empty ## [Unreleased] above the new version (still below the intro blurb).

B4 — Bump version manifests

Discover and edit every product semver field in the repo so it matches newVersion. See reference.md for common paths.

Process:

1. Search the repo for the current version string (from B2’s “latest released”) in likely manifests.
2. Update only fields that hold the package / app version (not schema or API format versions).
3. Prefer precise edits (same string format: quoted semver, no v prefix unless the file already uses it).
4. If multiple packages exist (monorepo), bump only the package(s) this changelog describes; ask if unclear.

Do not bump: schemaVersion, apiVersion, lockfile dependency versions, tool config schema ids.

Thunderstore / tcli: [package] versionNumber = "X.Y.Z" only — never [config] schemaVersion.

B5 — Reply summary

Include:

1. newVersion and semver rationale
2. The new ## [newVersion] - date section (copy from file)
3. Table: file · key · old → new for every manifest updated
4. Reminder: run git-commit and your project’s publish/tag workflow if not asked to commit here
5. Do not git commit, git push, or git tag unless the user explicitly requested it in the same message

Monorepos

• One changelog per package, or ask which path the release is for.
• Bump only manifests for that package.

What not to do

• Invent changelog bullets not supported by git or existing [Unreleased] text.
• Cut a release in Workflow A.
• Leave version manifests on the old number after Workflow B.
• Rewrite history in released changelog sections.

Additional reference

• Manifest table, bump examples, checklist: reference.md