Document issue-duplication-detector workflow

[Copilot]

The issue-duplication-detector workflow was added to .github/workflows/ but lacked user-facing documentation. This workflow runs every 6 hours to batch-process recent issues, using semantic analysis to detect duplicates and comment with suggested next steps.

Changes

• workflows/issue-duplication-detector.md: Source workflow file matching .github/workflows/ implementation
• docs/issue-duplication-detector.md: User documentation covering:
  • Installation via gh aw add githubnext/agentics/issue-duplication-detector
  • 5-step batch processing workflow (search → analyze → compare → comment)
  • Cost control via 6-hour batching window (max 10 comments/run)
  • Example output and human oversight considerations
• README.md: Added to "Depth Triage & Analysis Workflows" section

How It Works

1. Queries issues updated in last 6 hours
2. Extracts keywords from title/body
3. Searches for semantically similar existing issues
4. Posts helpful comments only on high-confidence duplicates

Uses safe-outputs with permissions: read-all for secure commenting.

> Custom agent used: agentic-workflows
> GitHub Agentic Workflows (gh-aw) - Create, debug, and upgrade AI-powered workflows with intelligent prompt routing

Original prompt

Add Issue Duplicator to the README and relevant docs. Document the issue-duplication-detector workflow that was added to this repository, explaining what it does, how it works, and how users can configure it.

Custom agent used: agentic-workflows
GitHub Agentic Workflows (gh-aw) - Create, debug, and upgrade AI-powered workflows with intelligent prompt routing

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[Mossaka]

@copilot change this to every 6 hours

[Copilot]

Changed to every 6 hours in commit f2c04d0. Updated the cron schedule to 0 */6 * * * and adjusted the time window for checking issues from last 10 minutes to last 6 hours throughout both the workflow and documentation files.