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feat: give the chapters motion, diagrams, and retrieval practice
Three strands of work on the chapter surface, all reading from the same
constraint: this site ships no runtime dependencies, so every effect below
is native CSS or an .astro component.

Motion (src/styles/motion.css, DrawRule.astro). A scroll-driven layer of
reveals, hero parallax, section depth, and a hairline that paints itself
along its path, scrubbed by `animation-timeline: view()` — 0KB against
lottie-web's ~60KB gzipped on the main thread. Every scrubbed rule sits
inside `prefers-reduced-motion: no-preference` and `@supports`, so a
Firefox reader or an opted-out one gets the complete static page rather
than one with holes in it. Ranges key to `cover 40%`-`cover 75%` where the
motion is meant to be watched: `view()` ranges key to first visibility,
which on a 2600px page is long before anyone is reading the section.
`.agents/skills/motion/references/scroll-driven.md` records the technique
and the two ways `pathLength` normalisation was broken while building it.

Diagrams (StepFlow.astro, WorktreeMap.astro). The `.steps` stack on
/skills/, /models/, and /agents/ becomes a numbered flow with connectors,
and /agents/ grows the worktree map it was describing in prose — reusing
the `trees` collection rather than a second set of strings. The map's
static variant is gated one class deeper than full-guide's page styles, so
the interactive copy renders byte-identical. Connectors are pseudo-elements,
not SVG: a stretched path desynchronises its own dash pattern, and a
straight line does not need one. Mermaid was considered and rejected at
~1MB of runtime.

Retrieval practice (/rules/, /skills/). A "check yourself" section of
native `<details>` question/answer pairs plus a citation row, both bilingual
through the existing `data-copy` toggle, and both JavaScript-free.

Two audit blind spots surfaced and are closed rather than worked around:
`build.inlineStylesheets: 'never'`, because Astro inlined sheets under ~4kB
and audit-ui.mjs reads its colour and size baseline from dist/_astro/*.css;
and `--columns` declared in the grid components, because an element-level
custom property is not a declaration the audit can resolve.

legacy/styles/skills.css is renamed and imported for its side effect. Inside
a *page*, `?url` resolves to that page's own CSS chunk whatever file it
names, so the link pointed at the wrong asset and the sheet was emitted but
never loaded — the package preview had been rendering unstyled and
overflowing since the Astro cutover.

verify.mjs gains 5 assertions for the recall sections and their Portuguese
copy: 89 now, against the 84 baseline.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-06 16:04:08 -03:00

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Rules That Survive the Prompt — AI For Dummies
A
field guide
Pipeline
Skills
Examples
Recall
EN
/
PT
A real repository case study
Rules that
survive the
prompt.
Prompts ask for behavior. Repositories preserve it. The interview project combines written context, reusable skills, executable checks, commit hooks, and independent review so the rule is still present when the conversation is gone.
CASE / NETCRACKER
interview
8 skills · 3 agents · 4 enforcement layers
THE SHORT VERSION
A prompt is advice for one run. A repository rule is reusable context plus an executable boundary.
Enforcement pipeline
select a checkpoint
From intent to evidence
Five places
a rule can
hold.
Not every rule belongs in a hook. Put guidance where an agent can discover it, deterministic policy in a command, cheap checks at commit time, and independent judgment at review.
01
CONTEXT
AGENTS.md
02
SKILLS
.agents/skills
03
CLI
check:ui
04
COMMIT
Husky
05
REVIEW
pragent
Project-local skills
procedures born from repeated friction
Small instruction packages
Teach the trap.
Name the
trigger.
These skills are not downloaded magic. They are repository-specific procedures under
.agents/skills/
, distilled from mistakes, commands, and architectural decisions that kept recurring.
gate-discipline
prove green is real
parallel-agents
worktree per task
repo-db
query before crawling
tech-debt
separate line of work
skill-writer
repeat twice, encode once
frontend / go-api
stack-specific traps
Concrete examples
open the source, then adapt
CLI RATCHET
Debt may go down.
Never silently up.
pnpm check:ui
# raw buttons
# swallowed catches
# pages without h1
# hardcoded colours
Read the checker →
HUSKY / PRE-COMMIT
Fast checks before history.
pnpm exec lint-staged
node scripts/check-ui-contract.mjs
Read the hook →
COMMIT MESSAGE
Intent has a grammar.
pnpm exec commitlint --edit $1
feat: add interview timer
fix(api): scope session query
Read commitlint config →
INDEPENDENT REVIEW
A second reader checks intent.
.pr-review.json
├── focus
├── exclude_paths
├── languages
└── instructions
Read review policy →
Retrieval practice
answer before you open
Desirable difficulty
Close the
page.
Recall.
Retrieval practice — recalling an answer from memory before re-reading — is what builds long-term retention. Answer each question from memory first, then open it to check.
Where does a rule belong: context, skill, CLI check, or hook?
+
Guidance the agent must discover goes in AGENTS.md or a skill. Deterministic policy becomes a CLI command, cheap gates run at commit time, and judgment calls go to review.
Why does a skill need a trigger, not just a workflow?
+
The trigger says when to load it. Without one the skill either never fires or loads every time — and a skill that always loads is just a slower prompt.
What separates a repository rule from a prompt?
+
The prompt is advice for one run. The rule is reusable context plus an executable boundary — still present when the conversation is gone.
COPY / ADAPT
Ask your agent to map the enforcement stack.
Use this in the interview repository or adapt the path names to another project.
COPY PROMPT
GO DEEPER
Read the implementation, not just this summary.
01
Repository context
AGENTS.md
02
Skill catalog
.agents/skills/
03
Design skills
skills/
03
Specialist agents
.claude/agents/
04
Staged-file policy
.lintstagedrc.cjs