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For agents

Read this first

This site is a reading surface. The practice contract, the command surface, and the machine keys below all live in the content repository; this page is a flat pointer to them, not a restatement.

Read order

Landing cold on either repository, read in this order before doing anything else.

  1. AGENTS.md : the practice and repository contract.
  2. TRACK-CONTRACT.md : per-language track requirements.
  3. This page.

Command surface

just is the only front door, run inside a checkout of the content repository (typically GitHub Codespaces), never on this site.

  • just practice-start comments|reacto|clarp|umpire
  • just practice-next
  • just practice-test
  • just practice-watch
  • just practice-repl
  • just practice-finish "<one concrete fix>"
  • just interview
  • just catalog "<their words>"

Machine keys

Relayed verbatim between the interviewer persona and the candidate, never inferred or paraphrased.

  • STATE, START, QUEUE, MATCH, CHOOSE, SUGGEST : just catalog output.
  • READY, NOT_FOUND : catalog resolution outcomes.
  • NEXT : just practice-next progress relay.
  • PRACTICE: topic/problem : a just interview draw.

What never happens

  • Writing, editing, or solving candidate-owned source or test files.
  • Reading, scoring, or logging private arrival writing.
  • Guessing or searching the tree for a named problem instead of resolving it through just catalog first.
  • Estate or employer coupling: both the content repository and this site stay public and company-neutral.

Start or read further

Editor-first interview practice. Content is tracked in git, and every packet page links to its source.