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Marcos Paulo 48c31dc1b3 build: migrate from npm to pnpm

Ten git worktrees each carried their own 225 MB node_modules (1.1 GB across
five) and paid 11s per `npm ci`. pnpm hardlinks from a shared store: the same
five worktrees cost ~250 MB total, and a fresh install is 4s.

What changed beyond the mechanical rename:

- `overrides` moved to `pnpm-workspace.yaml`. pnpm 11 does not read the `pnpm`
  field in package.json *or* npm's top-level `overrides`, and it fails silently
  — the vite/defu/language-server pins would have quietly stopped applying.
- Build scripts are blocked by default in pnpm; esbuild and sharp are allowed
  explicitly via `allowBuilds` (renamed from `onlyBuiltDependencies` in 11).
- `packageManager` + `engines` pin the toolchain.
- gate.sh rejects a package-lock.json/yarn.lock/bun.lock outright, so an agent
  running `npm install` out of habit fails loudly instead of building a second,
  divergent dependency tree.
- CI bootstraps pnpm with `npm install --global pnpm@11.25.0` rather than
  corepack (unbundled as of Node 25) or pnpm/action-setup (this self-hosted
  act-runner has never run a job; fetching a third-party action is not
  something to discover on the first one).

Two pre-existing CI bugs fixed while in the file:

- the gate installed with `npm install --package-lock=false`, which discarded
  the lockfile the previous session had just fixed.
- the visual-regression step imported `playwright`, which is not a dependency,
  and `visual-regression.mjs` has no compare mode anyway — in CI it overwrote
  its own baselines and passed unconditionally. Removed with a comment; it
  comes back when it can diff.

The `publish` job is now manual (`workflow_dispatch`). During the migration
dist/ holds three HTML files against the live pages branch's ten, so publishing
on every push to main would take the site down to a stub. Restore at task 20.

HANDOVER.md's incident log still says npm where it describes what happened at
the time; that is history, not a missed rename.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

2026-09-05 04:29:42 +00:00

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Rule: theming

Binding for every colour, font size, spacing value, and breakpoint.

Read ../context/design-system.md first. The current CSS has three drifting palettes and a broken @font-face. This rule describes the target; that file describes what you are migrating from.

One token layer

Every value comes from src/styles/tokens.css. If a component needs a value that is not a token, either it is a genuine one-off (justify it in a comment) or the token layer is missing something (add it there, not inline).

/* forbidden */
color: #172f42;
color: rgba(23, 47, 66, 0.6);

/* required */
color: var(--ink);
color: var(--muted);

No raw hex outside tokens.css. .agents/scripts/check-tokens.mjs enforces it; wire it into pnpm run verify.

Semantic names, not literal ones

--ink, --paper, --muted, --line, --accent, --gold, --blue, --deep are the existing vocabulary. Keep it — it is already semantic and the team reads it fluently. Do not rename to --color-neutral-900.

If a genuine second surface is needed, extend semantically (--surface-lab, --ink-inverse), never numerically.

Type scale

Replace the 14 ad-hoc clamp() triples with named steps:

--step-display: clamp(56px, 9vw, 126px); /* h1 */
--step-6: clamp(36px, 5vw, 65px); /* section h2 */
--step-5: clamp(24px, 3vw, 38px); /* sub-head */
--step-4: clamp(22px, 3vw, 36px); /* pull-quote */
--step-1: 15px; /* body */
--step-0: 11px; /* eyebrow / label */

The eyebrow treatment (10–11px monospace, letter-spacing:.08–.1em, uppercase) is a signature of this design. Make it one class, not fifteen repetitions.

Breakpoints

Five named widths replace the current sixteen:

--bp-sm: 560px;
--bp-md: 800px;
--bp-lg: 1100px;
--bp-xl: 1600px;
--bp-2xl: 2200px;

When collapsing a component's old breakpoint onto a named one, screenshot at the old value. That is where the regression will be.

Preserve the house style

Flat colour blocks, hairline 1px rules, near-zero border-radius.
Tight negative tracking on display type (-.06em … -.08em).
Grid separators built as gap:1px over a coloured parent background. This is deliberate. Do not "fix" it into border.
Georgia, serif for emphasis spans (h1 em). It renders today; keep it.

Fonts

Do not add a webfont without an explicit decision recorded in the task. The intended Manrope/DM Mono has never rendered; introducing it is a visual redesign, not a refactor. Default: match what renders today.

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