Pro tracks
Advanced tracks beside the six weeks
Extra notes for Pro. They do not replace the six weeks.
Easy and Medium do not depend on them. There is no account, no certificate, and no placement. Every engagement named here is fictional; the portfolio policy says how to talk about it.
Advanced pages
- Prompt, retrieval, or fine-tune. One leave-policy question, three options, the failure each still accepts. The default is do not fine-tune.
- Keel and Bin data reconciliation. Required practice for Week 2, at every depth. A messy extract, the live table, SQL for the gap, and a field map that is wrong on purpose.
- 45-minute coding practice. Parse, join, an idempotent write, and tests. No puzzles. It points at the interview page.
- Optional: a typed tool protocol, and Text2SQL with an allowlist. Not core. Not on Easy or Medium.
Pro sections inside the weeks and cases
- Identity and audit, on Week 3. Group, row filter, who is logged, and what must never enter the prompt. Harbor Lane billing and chart text stay out by a snippet, not by a policy sentence.
- Cost sheet, required on Week 6. Runs per day, tokens per run, the cache hit you are assuming, and the call you cut first. You fill the practice numbers. They are not savings.
- Harbor Lane, consulting and life-sciences stream. The clinic case, extended: a written no, corpus exclusion, a parallel run, and a handover on-call can follow.
All five fictional engagements are listed on Cases.