Template-based PRD authoring, format validation, and GitHub PR submission guidance for Day 6.

• Guides participants through environment checks (git, gh CLI, repo access), GitHub ID confirmation, and PRD creation or validation in under 15 minutes
• Provides a structured PRD template covering problem definition, skills inventory, and change history; validates eight required sections before submission
• Automates git workflow (branch creation, commit, push) and opens a GitHub PR with a single confirmation, handling common errors like missing tools or insufficient permissions
• Supports both new PRD authoring with AI-assisted drafting and validation of existing documents; scans local skills directory to populate project examples