chore(github): add commit message instructions for VS Code and Copilot

Add .github/instructions/commit-messages.instructions.md with Conventional
Commit rules, Impact footer guidance, and release-notes skip trailers.

Wired to VS Code via github.copilot.chat.commitMessageGeneration.instructions
in devcontainer.json so the SCM Generate button uses these rules.

Release-Notes: skip
User-Impact: none
This commit is contained in:
Julian Pawlowski 2026-04-12 12:11:23 +00:00
parent 1d3c55097d
commit a240393911

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---
description: "Use when writing or suggesting git commit messages, deciding commit type/scope, or preparing release-note-relevant commit trailers."
---
# Commit Message Rules (Release-Notes Aware)
Use these rules whenever you generate or suggest commit messages.
## Primary Goal
Write technically correct Conventional Commit messages while ensuring release notes only include user-relevant changes.
## Required Format
Use this structure:
<type>(<scope>): <short summary>
<body>
Impact: <user-facing outcome>
### Notes
- Keep summary imperative and concise.
- Keep body technical (what changed and why).
- Keep Impact user-facing (what users notice).
## Type Selection
- Use feat for new user-visible capability.
- Use fix only for user-visible bug fixes.
- Use perf for user-visible reliability/performance improvements.
- Use docs, test, refactor, chore, ci, build for non-user-facing work.
## Critical Rule: Internal/Unreleased Fixes
If a fix addresses code that was not released to users yet, DO NOT treat it as a user-facing fix.
In that case:
- Prefer chore(...) or refactor(...) instead of fix(...), and/or
- Add an explicit trailer in the commit body:
- Release-Notes: skip
- User-Impact: none
- Released-Bug: no
Any one of these trailers is enough.
## How To Decide Released vs Unreleased
When uncertain whether users were affected, check if the introducing commit was part of a release tag:
./scripts/release/check-if-released <commit-hash>
Interpretation:
- NOT RELEASED -> treat as internal/non-user-facing.
- ALREADY RELEASED -> user-facing fix is possible.
## Release Notes Alignment
This repository's release notes generator excludes commits with any of these trailers:
- Release-Notes: skip
- User-Impact: none
- Released-Bug: no
Therefore, add one of them whenever you intentionally want to exclude a commit from release notes.
## Examples
### User-facing fix
fix(config_flow): prevent setup failure on invalid home selection
Validate home selection before entry creation to avoid runtime errors when stale API data is returned.
Impact: Setup wizard no longer fails for users when home data changes during configuration.
### Internal-only fix for unreleased code
chore(periods): adjust extension guard for new geometric matcher
Tune guard conditions in the new matcher implementation to avoid edge-case misclassification during development.
User-Impact: none
### Alternative with explicit skip marker
fix(periods): correct follow-up edge case in unreleased geometric matcher
Adjust comparison threshold in iterative matcher pass.
Release-Notes: skip