add agentic workflow for ai triage issue

[AntonioCeppellini]

Description

Add a shared agentic workflow for AI-assisted issue triage.

Changes Made

• Added an ai-triage label trigger.
• Added GitHub Copilot with gpt-5-codex as the initial agent engine.
• Added Graphify 0.9.48 as a local MCP server through uvx.
• Exposed Graphify tools for code navigation and dependency analysis.
• Added source code and relevant documentation inspection.
• Added structured technical analysis with implementation plan and suggested LLM prompt.
• Added a single safe issue comment as output.
• Added gh-aw metadata for reproducible workflow compilation.
• Validated the workflow with gh aw validate --strict and git diff --check.

Related Issues

Fixes #331

Checklist

• I have used a PR title that is descriptive enough for a release note.
• I have tested these changes locally.
• I have added appropriate tests or updated existing tests.
• I have tested these changes on a cluster [name of the cluster] / customer [name of the customer]
• I have added appropriate documentation or updated existing documentation.

[luogni]

Nice! Is it possible to test or see some example output somewhere?

If it can be useful for your tests this is the agent I use for reviewing (always wip).

z.md