Replace verbose confirmation prompts with short options

[edytawrobel]

Summary

• Teaching scripts require students to type full sentences like "Say: 'I see the messy notes'" just to confirm they're ready to proceed
• This adds unnecessary friction and breaks the learning flow
• Updated SCRIPT_INSTRUCTIONS.md to prefer short confirmations (next, ready, y/n, done) and AskUserQuestion clickable options at check points

Test plan

• Run through a module (e.g. /start-1-3) and verify Claude uses short clickable prompts instead of verbose typed confirmations
• Verify teaching content and check-point gating still works correctly

🤖 Generated with Claude Code

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