---
name: bugfix-06d9ce6ee6aa
description: Fix a bug from a GitHub issue, following the reproduce-first
  workflow. Use when the user asks to fix a bug, investigate a GitHub issue, or
  debug a user-reported problem. Takes a GitHub issue URL or number as input.
---

# Bugfix Workflow

Follow this workflow for GitHub issue bugfixes. Do not skip reproduction; fixing
without first reproducing the bug tends to produce incomplete fixes and
regressions.

## Input

A GitHub issue URL or number. Slash-command arguments are appended to this skill
body by Qwen Code.

## Artifact Path

Use `.qwen/issues/` in this repo. In the steps below, `<issue-file>` means the
selected issue markdown file.

## Step 1: Read The Issue

Create the artifact directory if needed, then pipe the issue directly into a
markdown file using `gh`:

```bash
mkdir -p .qwen/issues
gh issue view <number> \
  --json number,title,body \
  -t '# Issue #{{.number}}: {{.title}}

{{.body}}

---

## Reproduction report

_Pending - to be filled by the test engineer._

## Verification report

_Pending - to be filled by the test engineer._
' > .qwen/issues/issue-<number>.md
```

## Step 2: Reproduce

Spawn the `test-engineer` agent and point it at `<issue-file>`. State only the
goal: reproduce the bug. Keep the prompt minimal; the test engineer owns the
reproduction strategy.

Wait for the test engineer to finish. Then read `<issue-file>` to get the
reproduction report. If the status is `NOT_REPRODUCED`, report that and stop.

## Step 3: Fix

Read the relevant code and make the fix. Use the reproduction report for
context; it should contain observed behavior, expected behavior, and useful code
paths.

If the bug is complex enough that the first attempt does not work, use the
`structured-debugging` skill and work through hypotheses systematically.

## Step 4: Verify

Build and bundle your changes:

```bash
npm run build && npm run bundle
```

Spawn the `test-engineer` agent again, pointing it at the same issue file. State
the goal: verify the fix using `node dist/cli.js`.

If the verification status is `STILL_BROKEN`, read the updated issue file, go
back to Step 3, and iterate. Do not proceed until verification returns
`VERIFIED_FIXED`.

## Step 5: Tests

Run unit tests for any packages you modified. If the test engineer wrote a
failing test during reproduction, make sure it passes after the fix. Otherwise,
add focused regression coverage for the failure scenario.

## Step 6: Self-Audit and Code Review

First self-audit the full diff per the self-audit step in AGENTS.md's General
workflow (open-ended passes plus presume-wrong verification, until two
consecutive clean passes; one clean pass suffices for a trivial fix). If the
audit changes source, re-run Step 4 before resuming it. Skip the review below
only for a plain one-line or trivial config fix. For anything else, run
`/review` with a review task listing all changed files. Triage each comment
with a verdict:

- **Valid**: real bug or meaningful improvement. Fix it.
- **False positive**: reviewer missed context. Skip it.
- **Overthinking**: technically plausible but not worth the complexity. Skip
  it.

After fixing valid issues, re-run unit tests and a quick verification sanity
check.

## Iteration Rules

- If Step 4 fails, go back to Step 3, then re-run Step 4.
- If Step 6 finds valid issues, fix them, re-run Step 4 as a sanity check,
  and re-run the self-audit.
- Do not loop more than 3 times between Steps 3-6 without asking the user.


---
Source attribution: QwenLM
Original project: https://github.com/QwenLM/qwen-code
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 Gabriel Moreira

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: QwenLM
Original project: https://github.com/QwenLM/qwen-code
Attribution basis: Upstream repository explicitly recorded in package mirror path

Fields of work: Development & Engineering
Roles: Backend Developer, DevOps / SRE, QA / Test Engineer
Specialties: Backend, Testing
Tools: GitHub
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 9255c751038bbde49aede73b14e33ccdc89c8accabc3de4aa52034d41a123b45
