fix: add issues trigger to issue-monster workflow

[Copilot]

Issue Monster only triggered on hourly schedule and manual dispatch, not when issues were opened. New issues waited up to 1 hour before processing.

Changes

• Added issues: types: [opened] trigger to workflow frontmatter
• Recompiled workflow with gh aw compile

on:
  issues:
    types: [opened]  # now triggers immediately on new issues
  workflow_dispatch:
  schedule: every 1h

The hourly schedule remains as a fallback to catch any issues that slip through.

Original prompt

debug issue monster on why it's not trigger for every issue

Custom agent used: debug-agentic-workflow
Debug and refine agentic workflows using gh-aw CLI tools - analyze logs, audit runs, and improve workflow performance

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[github-actions]

✅ Coverage Check Passed

Overall Coverage

Metric	Base	PR	Delta
Lines	77.88%	77.88%	➡️ +0.00%
Statements	77.94%	77.94%	➡️ +0.00%
Functions	77.29%	77.29%	➡️ +0.00%
Branches	71.00%	71.00%	➡️ +0.00%

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