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regression-guard

Enforce regression tests, root cause documentation, and RG-XXX code markers for bug fixes.

2|Updated May 10, 2026
Search Tags:#qa#root-cause#software-engineering#code-comments#bug-fix#regression-testing
One-click install
npx skills add https://github.com/freedomw1987/tree_monstor --skill regression-guard-freedomw1987
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: regression-guard
Source: https://github.com/freedomw1987/tree_monstor/tree/main/skills/regression-guard
Command: npx skills add https://github.com/freedomw1987/tree_monstor --skill regression-guard-freedomw1987

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill solves the problem of fixed bugs reappearing (regressions) after code changes, refactoring, or requirement updates. Without structured regression guards, teams waste time rediscovering and refixing the same bugs, and critical root cause knowledge is lost over time.

Core Features & Use Cases

  • Mandatory Regression Tests: Every bug fix must include a regression test to prevent the bug from reappearing.
  • Root Cause Documentation: Requires detailed analysis explaining why the bug happened and how to prevent it in the future.
  • Code Comment Markers: Adds RG-XXX comments in source code to protect invariants during refactoring.
  • QA Regression Mode: Defines safe hooks and commands for QA to re-run and verify regression tests.
  • Use Case: When a developer fixes an authentication bug, this Skill ensures they write a failing test first, document the root cause, add a code comment marker, create a QA hook, and commit with a message referencing the RG entry.

Quick Start

Use the regression-guard skill to fix the reported bug by reproducing it, writing a failing test, analyzing the root cause, implementing the fix, adding a regression test, documenting the entry in docs/REGRESSION-GUARD.md, adding a source code comment with the RG ID, and committing with a message that references the RG entry.

Frequently Asked Questions about regression-guard

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I prevent fixed bugs from reappearing after code refactoring or requirement changes?▼

Preventing fixed bugs from reappearing requires enforcing regression tests, documenting root causes, and adding code comment markers. This Skill mandates RG-XXX entries in docs/REGRESSION-GUARD.md and commit message references to ensure traceability and prevent regression.

How do I document root causes for bug fixes to maintain traceability?▼

Documenting root causes for bug fixes involves creating mandatory RG-XXX entries in docs/REGRESSION-GUARD.md. This records detailed analysis explaining why the bug happened and how to prevent it in the future, ensuring critical knowledge is not lost over time.

What is the best way to enforce regression testing in a software engineering workflow?▼

The best way to enforce regression testing is to require a failing test before implementing a bug fix, add source code invariant comments with RG IDs, define QA regression mode hooks, and commit with messages referencing the RG entry to ensure full traceability.

Can I use code comment markers to protect invariants during security patches?▼

Yes, you can use code comment markers to protect invariants during security patches. Adding RG-XXX comments in source code ensures that existing fixes are not inadvertently broken during refactoring, requirement changes, or security updates.

Does regression testing work without dedicated QA hooks for re-running tests?▼

Regression testing works best with defined QA hooks. This Skill defines safe hooks and commands for QA to re-run and verify regression tests, ensuring that mandatory regression tests are consistently executed and validated after bug fixes.

Why do fixed bugs reappear without structured regression guards in software development?▼

Fixed bugs reappear without structured regression guards because critical root cause knowledge is lost over time. Without mandatory regression tests, invariant code comments, and documented RG entries, teams waste time rediscovering and refixing the same bugs after code changes.

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