# Diagnosing Bugs

> - Bug-fix implementation admission = preserved red-capable reproduction.

- Skill: `sgaabdu4/diagnosing-bugs-2` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add sgaabdu4/diagnosing-bugs-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/sgaabdu4/diagnosing-bugs-2/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: sgaabdu4 (https://skillmd.com/u/sgaabdu4)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/sgaabdu4/diagnosing-bugs-2

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- Bug-fix implementation admission = preserved red-capable reproduction.
- Problem admission = observable violation still reproduces.
- Solution admission = [fix.md](references/fix.md) ladder `PASS` before edit.
- dependency/native packaging requires unique needed behavior.
- External/runtime/platform assumption → `research`.
- Reporter failures + constraints + examples + rejected remedies = immutable diagnosis ledger.