os

Fires before anything is presented to the user as done or reaches a user-facing surface, and on request for adversarial QA. Implements Guardrail 5, the Contrarian Gate. Runs an independent fresh-context os:foreman-verifier that publishes a verifiable contract before building starts, then re-verifies with fresh evidence after.

Fires when starting work inside a delivery project, or when a project's STATE.md says UNINITIALIZED. Session mechanics for bounded delivery projects (first-run init with the UNINITIALIZED sentinel, tasks/init.md and the 8-field Brief; session-start routine over STATE.md, lessons, blockers, Next line; posture rules; plan-before-build).

Fires for multi-file or multi-stage tasks, or on: orchestrate, delegate, foreman mode, save tokens, multi-agent, farm this out, big task on a budget. Orchestration protocol: delegation tickets, status vocabulary, escalation ladder, verification discipline, and the run ledger.

Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defaults.

Fires on every response for the rest of the session, injected at session start by a SessionStart hook. Shapes output for a reader with ADHD - lead with the outcome, number multi-step content, restate state each turn, one concrete next action, no preamble or recap.

Fires at the end of any real work session, when the user says wrap up, close out, or session end, and before a long pause. Distills the session into dated, verdict-tagged lessons, updates STATE.md or the machine-mode running log, promotes repeat lessons toward rules, and summarizes what was built plus the next step.