Add one new feature to Pennywise using Claude Code, from plan to working, on your own. Then document it in Cowork.

Pick one (or propose your own)

• Search and filter expenses by name or category
• A budget limit per category, with an alert when you go over
• Export the monthly summary as a PDF
• A chart of spend over the last six months
• Recurring expense detection (same payee, same amount, monthly)

Rule of thumb: pick something Lovable would struggle to do cleanly.

How to do it (graded on process, not polish)

1. Start with the Plan prompt. Read the plan, correct it, then say go.
2. Build one step at a time. Review each diff before you approve it.
3. Hit a break and fix it with the Debug prompt.
4. Write a one-page PRD for your feature in Cowork.
5. Create your first Claude Code skill (/new-feature) and use it at least once.
6. Publish a LinkedIn post with Cowork. Do not just draft it.

Stretch

Ask Claude Code to write a short plain-English note in your project explaining how the feature works.

Time: 60 to 90 minutes. Stuck more than 15 minutes is a WhatsApp question, not a solo struggle.