---
name: run-tests-on-the-unmodified-codebase-before-starting-to-establis
description: run tests on the unmodified codebase before starting to establish a failure baseline
generated_from_knowledge:
  - 2041997b-c527-4cc0-bcf1-08f0cfd6777f
source_knowledge_ids:
  - 2041997b-c527-4cc0-bcf1-08f0cfd6777f
generated_at: 2026-07-02T02:35:49.911Z
confidence: 0.60
status: active
version: 1
skill_origin: generated
---

<!-- generated by opencode-swarm skill-generator. Do not edit by hand; edits will be preserved on regeneration only with controlled update mode. -->

# run tests on the unmodified codebase before starting to establish a failure baseline

## Trigger

- (no explicit trigger metadata; cluster derived from category/tags)

## Required Procedure

- run tests on the unmodified codebase before starting to establish a failure baseline

## Forbidden Shortcuts

- label post-change test failures as 'pre-existing' without running tests before the change

## Delegation Template

When delegating a task affected by this skill, include:

```
SKILLS: file:.opencode/skills/generated/run-tests-on-the-unmodified-codebase-before-starting-to-establis/SKILL.md
```

## Reviewer Checks

- Verify each required action above appears in the diff.

## Test Engineer Checks

- Add or update tests covering the trigger condition and the forbidden shortcut.

## Source Knowledge IDs

- 2041997b-c527-4cc0-bcf1-08f0cfd6777f — A test failure observed after your changes cannot be classified as 'pre-existing' without a pre-change baseline run — post-hoc attribution to pre-existing failures is unreliable and masks genuine regressions