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Profile, goals and review limits, plus backups of everything you have done here.
Each module ends with a short lab. They open one at a time along the path, so each one picks up where the last left off.
Design critiques, lab grading, the AI interviewer and the lesson tutor use OpenAI with your own key.
Off. Set OPENAI_API_KEY in the API's environment (Dokploy, or .env.local when running locally) and restart the API to turn it on. Optionally set OPENAI_MODEL (default gpt-5-mini).
Everything lives in your Postgres database. A backup is a single JSON file with all designs, versions, reviews, activity, cards and studio attempts.
The old lab was removed from Devops-lab; run it from git history (see the README), then use Export all drafts in the library footer, or a single problem's Export draft, then choose the file here. Problems that already have a design here are left untouched.