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investigate

Use when a test fails, code errors or output is wrong: find the root cause, then fix it. (gstack)

investigate/SKILL.md

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<!-- AUTO-GENERATED from SKILL.md.tmpl — do not edit directly -->
<!-- Regenerate: bun run gen:skill-docs -->

## Done means

Finish only when each of these exists (contract v1):

- `debug-report`: a `DEBUG REPORT` with Symptom, Root cause, Fix, Evidence, Regression test and Status filled in (`none: <why>` where the skill's own stop rule leaves one empty).
- `check-after-last-edit`: a test or repro command run after your last edit.

`~/.claude/skills/gstack/bin/gstack-skill-contract check` reads them from the transcript (docs/skill-routing-and-contracts.md). For an item that truly does not apply, run `~/.claude/skills/gstack/bin/gstack-skill-contract waive <item> --reason "<why>"` (this session only; it counts as a miss).

## Shared preamble (load first)

This skill follows gstack shared preamble `4e82fa4c839f` (AskUserQuestion format, voice, writing, completeness and completion rules). If your Read of that file, headed by this id, is still in context, do not read it again; otherwise Read `~/.claude/skills/gstack/investigate/sections/preamble.md` in full before the command below. A section or subsection here with a shared heading replaces the shared one.