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robobun 88fa296dcd Add GitHub issue deduplication automation (#23926 )

## Summary

This PR adds a Claude Code-powered issue deduplication system to help
reduce duplicate issues in the Bun repository.

### What's included:

1. **`/dedupe` slash command** (`.claude/commands/dedupe.md`)
- Claude Code command to find up to 3 duplicate issues for a given
GitHub issue
   - Uses parallel agent searches with diverse keywords
   - Filters out false positives

2. **Automatic dedupe on new issues**
(`.github/workflows/claude-dedupe-issues.yml`)
   - Runs automatically when a new issue is opened
   - Can also be triggered manually via workflow_dispatch
   - Uses the Claude Code base action to run the `/dedupe` command

3. **Auto-close workflow**
(`.github/workflows/auto-close-duplicates.yml`)
   - Runs daily to close issues marked as duplicates after 3 days
   - Only closes if:
     - Issue has a duplicate detection comment from bot
     - Comment is 3+ days old
     - No comments or activity after duplicate comment
     - Author hasn't reacted with 👎 to the duplicate comment

4. **Auto-close script** (`scripts/auto-close-duplicates.ts`)
   - TypeScript script that handles the auto-closing logic
   - Fetches open issues and checks for duplicate markers
   - Closes issues with proper labels and notifications

### How it works:

1. When a new issue is opened, the workflow runs Claude Code to analyze
it
2. Claude searches for duplicates and comments on the issue if any are
found
3. Users have 3 days to respond if they disagree
4. After 3 days with no activity, the issue is automatically closed

### Requirements:

- `ANTHROPIC_API_KEY` secret needs to be set in the repository settings
for the dedupe workflow to run

## Test plan

- [x] Verified workflow files have correct syntax
- [x] Verified script references correct repository (oven-sh/bun)
- [x] Verified slash command matches claude-code implementation
- [ ] Test workflow manually with workflow_dispatch (requires
ANTHROPIC_API_KEY)
- [ ] Monitor initial runs to ensure proper behavior

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude <noreply@anthropic.com>

2025-10-21 14:57:22 -07:00

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allowed-tools, description

allowed-tools	description
Bash(gh issue view:), Bash(gh search:), Bash(gh issue list:), Bash(gh api:), Bash(gh issue comment:*)	Find duplicate GitHub issues

Issue deduplication command

Find up to 3 likely duplicate issues for a given GitHub issue.

To do this, follow these steps precisely:

Use an agent to check if the GitHub issue (a) is closed, (b) does not need to be deduped (eg. because it is broad product feedback without a specific solution, or positive feedback), or (c) already has a duplicate detection comment (check for the exact HTML marker  in the issue comments - ignore other bot comments). If so, do not proceed.
Use an agent to view a GitHub issue, and ask the agent to return a summary of the issue
Then, launch 5 parallel agents to search GitHub for duplicates of this issue, using diverse keywords and search approaches, using the summary from Step 2. IMPORTANT: Always scope searches with repo:owner/repo to constrain results to the current repository only.
Next, feed the results from Steps 2 and 3 into another agent, so that it can filter out false positives, that are likely not actually duplicates of the original issue. If there are no duplicates remaining, do not proceed.
Finally, comment back on the issue with a list of up to three duplicate issues (or zero, if there are no likely duplicates)

Notes (be sure to tell this to your agents, too):

Use gh to interact with GitHub, rather than web fetch
Do not use other tools, beyond gh (eg. don't use other MCP servers, file edit, etc.)
Make a todo list first
Always scope searches with repo:owner/repo to prevent cross-repo false positives
For your comment, follow the following format precisely (assuming for this example that you found 3 suspected duplicates):

Found 3 possible duplicate issues:

This issue will be automatically closed as a duplicate in 3 days.

If your issue is a duplicate, please close it and 👍 the existing issue instead
To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

2.2 KiB Raw Blame History

Issue deduplication command

2.2 KiB

Raw Blame History