opus-fable-playbook

Use when about to write your final reply, a summary, PR description, commit message, or any user-facing conclusion — enforces Fable's outcome-first, prose-first communication contract.

Use when a task involves 2+ independent units of work (files, modules, questions) or any broad codebase sweep — enforces Fable's delegation-first parallel orchestration.

Use before ending any turn that involved multi-step work — Fable's end-of-turn gate catches promised-but-undone work, buried findings, and unverified claims.