Impact Check

Skill: impact-check

Purpose

Before modifying any symbol (function, class, variable, config key), map all dependents so no callers blindsided.

When to use

• Before editing shared utility, base class, or widely-imported module
• Before renaming or deleting anything
• As first step of safe-change or propose

Steps

1. Identify exact symbol(s) to change.
2. Search entire codebase for all imports, calls, references to each symbol.
3. For each reference: note file path, line number, how it uses symbol.
4. Classify each reference:
   • Direct — calls or imports symbol itself
   • Indirect — depends on behaviour symbol produces (e.g. reads its output)
5. Report full list. If zero references found outside file, state explicitly.
6. Flag any reference in test file separately — those must update or give false confidence.
7. If symbol not yet documented in wiki/, note as gap — do not create entry now. Wiki entries only written after code committed (see verify-before-commit).

Rules

• Do not modify anything during this skill — output only.
• If codebase large, search by symbol name AND file pattern (e.g. all *.ts files).
• Do not assume symbol unused because no direct callers — check indirect dependents too.

Output Report

After all main skill tasks complete, write a propose draft to the wiki.

Steps

1. Build the filename:

• Format: DDMMYY-<ten>.md
• DDMMYY = today (e.g., 020626 for 2 June 2026)
• <ten> = 2–4 kebab-case words summarising what was done (e.g., landing-page-coteccons, brand-kit-fintech, ingest-auth-spec)

2. Write llmwiki/wiki/sources/draft/DDMMYY-<ten>.md:

# DDMMYY-<ten>
**Type:** draft
**Status:** proposed
**Tags:** <skill-name>, output-report
**Proposed:** YYYY-MM-DD

## What
<One sentence — what this skill invocation produced or decided>

## Output
<Key artefacts, files created/modified, or decisions made>

## Files
| File | Action |
|------|--------|
| `path/to/file` | created / modified |

## Notes
- Invoked via: `/<skill-name>` skill

## Origin
- **Draft:** `wiki/sources/draft/DDMMYY-<ten>.md`
- **Commit:** _(filled by verify-before-commit)_
- **Date promoted:** _(filled by verify-before-commit)_

3. Update wiki index & log:

• llmwiki/wiki/index.md — append one row: | [DDMMYY-<ten>](sources/draft/DDMMYY-<ten>.md) | draft | YYYY-MM-DD |
• llmwiki/wiki/log.md — append: ## YYYY-MM-DD — <skill-name> — <ten>

Skip only when the skill produces zero artefacts and zero decisions (e.g., a pure display mode like /caveman-stats).