Make a strategy enforced rather than documented

Move a rule from prose that only suggests to a PreToolUse hook that actually blocks, once divergence from it is measured.

Also usesclaude-plugins-official

A rule that lives only in prose is a suggestion. This repo has measured the difference, and the measurement is what makes the entry actionable rather than moralistic.

Start here

One prompt to start

Turn this documented convention into something that actually holds -- draft it as one concrete rule with real file:line evidence, check the real files against that rule to see where it actually diverges before writing any enforcement, and then write a PreToolUse hook that blocks it on the first attempt rather than trusting prose to hold.

Needscupertino, plugin-dev

Beats

Run these in order. Each prompt is copy-pasteable straight into Claude Code.

1. cupertino:cupertino-handbook-draft

   A rule stated abstractly cannot be mechanically checked; the draft step forces a real file:line basis.

   Run this beat on its own

   turn this convention into one concrete rule with real file:line evidence — not a principle, a rule

2. cupertino:cupertino-handbook-check

   Enforcement written before the divergence is known will either block everything or nothing.

   Run this beat on its own

   check these files against that rule and show me every divergence with a line number

3. plugin-dev:hook-development

   A `PreToolUse` hook holds regardless of model cooperation; prose does not.

   Run this beat on its own

   prose isn't holding this. Write a PreToolUse hook that blocks it on the first attempt.

Worked example

Grounded in — why this beat order is trustworthy

the enforcement ladder measured in this repo's own `CLAUDE.md` — prose in a `SKILL.md` as baseline, a guard behind a fenced `python3` block invoked one run in three, a guard inside a Workflow script one in fourteen, and a `PreToolUse` hook of `type: "command"` blocked on the first attempt. `tools/enforcement-audit/rules/` currently holds a single `andon.json`; six plugins have no rules file at all.

Do / Don't

• ✓Draft the rule as one concrete, file:line-grounded statement -- an abstract principle can't be mechanically checked.
• ✓Check real divergence against the rule before writing enforcement -- written blind, it will either block everything or nothing.
• ✓Write a PreToolUse hook of type 'command' for anything that must hold regardless of model cooperation -- prose alone does not hold.

• ×Don't write enforcement before you know where the real divergence actually is -- it'll either block everything or nothing.
• ×Don't trust prose in a SKILL.md to actually enforce a rule -- this repo has measured it as the weakest layer on the enforcement ladder.
• ×Don't leave a rule that must hold universally sitting only in a fenced script or workflow-script guard -- those fire far less reliably than a PreToolUse hook.