Add AI prompt guides for learning Git

[braboj]

What

Add a section or page with curated prompts readers can use with AI tools (ChatGPT, Claude, etc.) to deepen their Git understanding. Examples:

• "Explain what happens internally when I run git rebase main"
• "Walk me through a merge conflict resolution step by step"
• "Quiz me on Git branching concepts"
• "Review my Git workflow and suggest improvements"

Why

• Readers already use AI tools alongside tutorials — give them good prompts instead of letting them guess
• Reinforces the tutorial's "concepts first" approach — prompts that ask "why" not just "how"
• Differentiator from other Git tutorials
• Ties into the home page message about AI workflows

Open questions

• Standalone page, appendix section, or per-chapter prompt suggestions?
• Include prompts for code review and commit message generation?