Create GitHub Pull Request

Execute automated PR creation workflow with comprehensive quality validation and security scanning.

Context

• Current git status: !git status
• Current branch: !git branch --show-current
• Unpushed commits: !git log --oneline -5
• GitHub authentication: !gh auth status
• Repository changes: !git diff --stat HEAD~1..HEAD

Requirements Summary

Ensure repository readiness with clean state and authentication. Complete all quality checks (lint, test, build, security) before PR creation. Link related issues with auto-closing keywords and apply accurate labels. See references/requirements.md for complete checklist.

Phase 1: Validation and Analysis

Goal: Validate repository state, analyze changes, detect templates, and identify blockers.