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3e38e595c7 Add platform axis (web / ios / android / adaptive) (#269 )

* Add a platform axis (web / ios / android / adaptive) to the skill

Orthogonal to register: register decides whether design IS or SERVES the
product; platform decides the delivery target and which native conventions
apply. Set `## Platform` in PRODUCT.md; a missing field defaults to `web`,
so legacy projects are unaffected.

- extractPlatform() in skill/scripts/context.mjs (mirrors extractRegister);
  the CLI appends a NEXT STEP directive to read the native reference(s).
  `adaptive` (Flutter / RN / KMP shipping both iOS and Android) loads both
  ios.md and android.md.
- New reference/ios.md (Apple HIG distilled) and reference/android.md
  (Material 3 distilled); reference/web.md is a thin pointer. The native
  refs frame register's role as narrow: platform conformance is the bar,
  brand lives in the expressive layer the platform gives you, never by
  breaking the rails.
- Setup step 5 loads the native reference(s) when platform is native. Live
  mode and the detect CLI stay web-only, gated off ios/android/adaptive.
- init asks platform right after register; adapt/audit/animate/layout carry
  short platform divergence notes; all secondary spots thread `adaptive`.
- a11y stays in audit.md (loading it at design time makes output timid), so
  the native refs carry no Accessibility section; audit.md's Platform
  section owns native a11y.
- Tests: extractPlatform unit coverage + skill-behavior scenario 10
  (PRODUCT.md platform ios -> agent loads ios.md).

Source-first: only skill/, scripts/, tests/, CLAUDE.md, NOTICE.md, the
changelog and version are committed; the sync workflow regenerates the
provider trees and ./plugin on merge.

ios.md / android.md are distilled from the MIT-licensed
ehmo/platform-design-skills; attribution in NOTICE.md.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* Address review: gate web tools on native platforms, drop version churn

Maintainer-review fixes applied with AI assistance (Claude Code), on top
of the rebased platform-axis commit:

- Design hook (post-edit and Cursor pre-edit) now resolves the project
  platform via loadContext + extractPlatform and skips its web rule scan
  for ios / android / adaptive projects, so React Native / Flutter code
  never draws web-shaped findings (new hook-lib resolveProjectPlatform /
  isNativePlatform helpers, covered by unit and subprocess tests).
- context.mjs CLI warns on an unrecognized ## Platform value (e.g. a
  toolchain name like `flutter`) instead of silently defaulting to web;
  extractRegister / extractPlatform now share extractSectionValue.
- Removed reference/web.md: nothing loaded it; CLAUDE.md carries the
  "web has no extra rulebook" explanation.
- init.md: skip live-mode config (Step 6) for native platforms; note the
  per-app PRODUCT.md pattern for repos shipping web + native.
- android.md: Material-everywhere apps that also ship on iPhone still
  owe iOS OS guarantees (safe areas, Reduce Motion, edge-swipe back).
- ios.md: reworded a design-time line that framed Dynamic Type as an
  accessibility check (a11y stays owned by audit.md).
- Renumbered the new skill-behavior scenario to 14 after main's 10-13;
  updated CLAUDE.md scenario list; added android + unrecognized-value
  CLI test cases.
- No version or changelog changes: versioning happens at release time.

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

* Tighten platform reference prose

Editorial pass on the platform-axis text, applied with AI assistance
(Claude Code) under maintainer direction:

- ios.md / android.md rewritten to house style: single-line paragraphs
  (no hard wraps), one-sentence scope intro, deduplicated intro/slop-test,
  register-compression down to two sentences. In-file attribution
  paragraphs removed (NOTICE.md owns attribution); "read on top of the
  register reference" cruft removed (SKILL step 5 and the context.mjs
  directive already say it). Bans sections dropped: they restated the
  rules above them; the two additive items (tab-bar overload,
  hover-dependent affordances) folded into rules. ~40% smaller each.
- Sub-command Platform sections (adapt, audit, animate, layout), SKILL
  step 5, init.md platform prose, and the context.mjs directive trimmed
  the same way.

Build (prose validators, counts) and both test runners green.

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

* Treat an empty PRODUCT.md section as absent, not the next heading

Copilot review catch: extractSectionValue read the next `## ...` heading
as the section value when a field was left empty, which made the CLI
warn "value `## Product Purpose` is not recognized". Stop at the next
heading and return null instead. Regression tests for extractPlatform,
extractRegister, and the CLI warning path. Applied with AI assistance
(Claude Code) under maintainer direction.

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

* Only read a token list of both native targets as adaptive

Bugbot catch: after the exact platform tokens failed, any Platform line
containing the words ios and android was classified adaptive, so
negated or explanatory prose ("web only, not ios or android") silently
loaded both native refs and skipped the hook, with no warning. The
combo parse now accepts only list separators and the two platform
words; anything else falls through to the CLI's unrecognized-value
WARNING. Regression tests added. Applied with AI assistance (Claude
Code) under maintainer direction.

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

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: Paul Bakaus <paul.bakaus@gmail.com>

2026-07-08 17:11:31 -07:00

3.7 KiB

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iOS platform

For native iOS / iPadOS apps: SwiftUI, UIKit, React Native, Expo, Flutter shipping to Apple hardware.

On native, register narrows. HIG conformance governs structure, navigation, and interaction whatever the register; brand expresses through the expressive layer the platform provides (tint, type, motion, content). Calm, Duolingo, and Spotify carry strong identity entirely inside HIG conventions.

The iOS slop test

Would a fluent iPhone user trust this app, or pause at off-spec controls? The tell is "ported from a website": reinvented navigation bars, custom back gestures, web-shaped buttons, hover-dependent affordances. Default to the platform's components; depart only for a reason the user would thank you for.

Layout & structure

Safe area. Lay out inside the safe-area insets. No controls under the notch, Dynamic Island, home indicator, or rounded corners.
System navigation. Tab bar for 2–5 top-level sections (sections, never actions), navigation stack for hierarchy, sheet for self-contained tasks. No custom global nav, no mixed metaphors.
Edge-swipe back stays alive. The left-edge back gesture is muscle memory; never disable or overlay it.
Large titles on top-level screens, collapsing to inline on scroll. Deep detail screens stay inline.

Touch targets

44×44 pt minimum for every tappable control, with breathing room between adjacent targets.

Typography

Dynamic Type. Use the system text styles (Large Title through Caption) so text follows the user's reading size. No hard-coded point sizes.
San Francisco carries the UI. Body, labels, and controls stay on SF Pro / SF Compact; a brand face may appear in display moments.
11 pt floor; Body is 17 pt.

Color & materials

Semantic system colors (label, secondaryLabel, systemBackground, separator, tint). They adapt to Dark Mode and increased contrast automatically; raw hex breaks there.
Dark Mode is a first-class appearance. Design and test both.
One tint color drives interactive elements; decoration is not its job.
System materials for blur and translucency behind bars and sheets; no hand-rolled glassmorphism.

Components & controls

Platform controls. Switch, segmented control, stepper, system pickers, action sheets, alerts, context menus, swipe actions. Reinventing these for flavor is the most common native slop.
SF Symbols for iconography: baseline-aligned, Dynamic Type-aware, weight and scale variants. Don't mix in a web icon set.
Deliberate modality. Sheet for a focused dismissible sub-task, full-screen cover for immersion. Clear Cancel/Done; honor swipe-to-dismiss unless data loss requires a guard.
Grouped/inset lists for settings-shaped content; no bespoke card stacks.

Motion

System transitions. Push slides, sheets rise, dismiss reverses the entrance. Custom transitions that fight the navigation model disorient.
Honor Reduce Motion. Crossfade instead of parallax and large slides.

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