CLAUDE.md's folding-devices rule gains the two new invariants (a shape change
with the keyboard up baselines to window.innerHeight; a base gutter overridden
by a later @media block needs its own zero-base fold restatement, and a
compound rule written against a mobile.css shorthand is scoped to that band)
plus the architecture-invariants pointer it lacked; the new Folding devices
section there carries the mechanisms and the measurements. The device count
is 138 since the two Duo profiles landed (68 Playwright + 70 custom).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
The phone tier stopped at innerWidth < 430 and @media (max-width: 430px), so every current large phone landed in the tablet layout: the 430pt iPhone 14 Pro Max, 15 Plus, 15 Pro Max and 16 Plus, the 440pt iPhone 16 Pro Max and 17 Pro Max, Pixel 6 Pro, 7 Pro and OnePlus 12 Pro, the 448pt Pixel 8 Pro and 9 Pro XL, and the Galaxy Z Fold 5 cover screen at 460. On those devices the header icon row replaced the session pill, the toolbar kept the desktop Run Shell button instead of Enter and the mic, the keyboard accessory bar could never become visible because its .visible rule lives inside the phone block, and the toolbar jumped to the top of the page when the keyboard opened.
The new cutoff is 600, the line test/mobile/devices.ts already draws between large phones (430-599) and small tablets (600-767). No physical device sits between 480 and 600, but a phone zoomed out one or two steps in Safari does: a 440pt iPhone at 85% or 75% page zoom reports 518px or 587px and still needs the phone controls, which a 480 cutoff would have taken away. The phone block is max-width: 599px and the tablet block starts at min-width: 600px, so a 600px device is a tablet in CSS and in getDeviceType() alike instead of straddling the boundary the way 430pt phones did.
The number changes everywhere it is encoded: JS, CSS, comments, CLAUDE.md, the CI tests that pin the phone block, and the test:mobile helpers. Measurement history that names 430px stays as written.
Follow-ups to #241 (thanks @Lint111), from an independent review of that PR. The
script is a real fix for a real gap; these are the four defects the review found,
each reproduced before and after.
1. A wrong-but-fresh output was never repaired. The zerolag bundle is finished by a
SECOND step (the alias append), so anything landing between esbuild and the
append is permanent: the file looks complete, carries a current mtime, and the
mtime-only cache reports "up to date" forever while the suite dies on
`LocalEchoOverlay is not defined`. Reproduced by replaying #241's own two
commits: running the first and then pulling the second kept the broken bundle.
Fixed twice over, because the two halves address different cases. Builds now go
to a temp file and `renameSync` into place, so this script can never publish a
half-written output (that also covers an interrupted esbuild or copy, and two
concurrent runs). And `isFresh` verifies the bundle actually contains its alias
tail, which is what repairs a file an EARLIER version already poisoned; a rename
alone cannot fix what is already on disk.
2. Freshness compared against the entry file only, but esbuild bundles its four
siblings too, so editing overlay-renderer.ts left the suite testing a stale
overlay while reporting "up to date". Editing those siblings is exactly the
single-source workflow CLAUDE.md mandates. It now stats every `.ts` in the
package source dir. A full rebuild is ~2s, so the cache was not buying much.
3. `execFileSync('npx', ...)` passed no cwd, unlike scripts/build.mjs, so a run from
another directory missed the repo's pinned esbuild and would fetch an unpinned
one from the registry. Both calls now pass `cwd: ROOT`.
4. Every invocation in test/mobile/README.md was a bare `npx vitest`, which skips
the `pretest:mobile` hook npm only fires for `npm run test:mobile`, so the
documented commands all bypassed the fix. Rewritten, with a note on why.
Also: an esbuild failure printed a raw stack; it now names the asset and its input,
matching the missing-input message. And the header comment no longer implies the
vendor dir is always empty: scripts/postinstall.js already writes these same seven
outputs, so what this script adds is freshness and independence from install time.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>