What changed in Arcadia

2026-11-09

Capability update

• Added

  Arcadia Field Notes opens Canyon Pass

  Working — Field Notes now has a moving Martian canyon that follows the site’s day and night cycle. Readers who prefer reduced motion get a still backdrop. The November 9 post follows a real test run from a confusing instruction to a check before launch.

  • Where to read Field Notes and how Canyon Pass works.
  • What Arcadia checks before an agent starts.
• Added

  Earlier warnings for confusing run instructions

  In progress — Before preparing a run’s start card, Arcadia warns about ambiguous test filenames and rejects certain invisible characters in the instructions. The check passed offline tests and CI. Its effect on live retries is still unmeasured.

  • The original failure, the tested fix, and the limits of the evidence.
  • The checks Arcadia runs before it prepares a start card.
• Now working

  One to-do list for what needs your attention

  Previously: Planned — One read-only list and Plan progress checklists derived from existing records.

  Working — Run arcadia todo to see pending Decisions, Agent Asks and review items together, with blockers first. Arcadia builds the list from existing records each time you open it.

  • The read-only to-do command and its inputs.
  • Tests for blockers, ordering and duplicate items.
• Now working

  A check that the next Action is ready to start

  Previously: Planned — Observable done-conditions, deterministic lint and a separate grader before a next action counts as actionable.

  Working — When Arcadia clarifies a request, it checks that the next step is concrete and has an observable finish. A separate grading pass can send back one question for the missing detail.

  • The completed grading work and its acceptance criteria.
  • How clarification checks the done-condition and handles an open question.

Evidence revision 2e5b841