Add debug-issue.md template for systematic bug analysis

[alimoradi296]

Summary

This PR adds a new debug-issue.md template to extend the ai-dev-tasks workflow to bug fixing. The existing
templates (create-prd.md and generate-tasks.md) only cover feature development, but developers spend significant
time fixing bugs which require a different analysis structure.

Changes

• New file: debug-issue.md - Template for creating structured Issue Analysis Documents
• Updated: README.md - Added one line documenting the new template in the "Files in this Repository" section

What does debug-issue.md do?

Following the same pattern as the existing templates, debug-issue.md guides the AI to:

1. Ask 3-5 essential clarifying questions about the bug (frequency, severity, environment, etc.)
2. Generate a comprehensive Issue Analysis Document with:
   • Reproduction steps
   • Expected vs actual behavior
   • Root cause analysis
   • Proposed solution
   • Testing requirements

Why this addition?

• Fills a workflow gap: The existing templates only address feature development, not bug fixing
• Same methodology: Uses the same structured, question-driven approach that makes the existing templates
  effective
• High practical value: Developers fix bugs constantly - this makes AI assistance more reliable for debugging
• Consistent quality: Template matches the tone, structure, and length of existing files

Design Decisions

• Kept it focused: Only creates the Issue Analysis document (doesn't extend into implementation)
• Junior developer audience: Same target as existing templates - explicit, unambiguous language
• Minimal README changes: Only one line added to document the file, no other changes
• 3-5 question limit: Consistent with create-prd.md pattern

Testing

The template has been reviewed against the existing templates for:

• ✅ Consistent structure and section ordering
• ✅ Similar length (~98 lines vs 82 and 71 for existing templates)
• ✅ Matching tone and clarity
• ✅ No contradictions or ambiguities
• ✅ Focused scope (analysis only, not implementation)

Files Changed

• debug-issue.md (new, 98 lines)
• README.md (1 line added)