Cut duplicated and speculative code across the package

An over-engineering audit of the whole tree, applied in five reviewed
batches. Behaviour stays the same except where UPGRADE.md says otherwise.

PHP: the showcase and error-page stylesheets are prebuilt into
resources/dist by bin/stylesheets.mjs, through Vite's own postcss-import
(first occurrence kept, the order an application's build gives), instead
of Stylesheets::bundle() inlining imports on every request; only the
import walk DesignGuard needs stays. SchemeStylesheet::withProfiles()
replaces three copies of the scheme-plus-profiles loop, material:scheme
leaves spec and contrast checks to the node script that already made
them, and the error page's scheme cache, the hashed view namespace, the
translations path with no lang/ folder and DesignGuard's 1.x-name hints
are gone.

JS: the androidx shape port progress.js and both bin scripts each carried
lives once in resources/js/shapes.js (the generated SVGs are unchanged);
util.js holds ringIndex(), ms(), reopenGuard() and remember(), which
were written out several times; listeners are released through
AbortController; tooltip.js's hoverPopover() serves the rich tooltip too.

CSS: every rule for an element inside the navigation rail queries
`--md-navigation-rail-value` instead of repeating the seven collapsed
conditions under five media branches; badge, alert, progress, slider and
button read one non-inheriting colour-role table (components/color.css);
the dialog chrome, the submenu's popover chrome, the chip's state layer
and touch target, and the visually-hidden inputs use the shared rules
they copied; foundation/tokens.css is folded into foundation.css.

Views: Support\Field and Support\Link replace the error-key, bound-value
and link-attribute blocks copied into the fields and link components;
the timepicker period group, the menu filter and the showcase head are
partials; the datepicker's steppers and entry fields are loops; component
docblocks no longer restate SKILL.md.

Tests and tooling: one dataset-driven ComponentStylesheetsTest replaces
four per-group files, DesignGuardTest and the layout-component tests use
datasets, browser tests share one ready() helper, CSS parsing lives in
ComponentStylesheet alone. docs/audits and the finding IDs citing it are
removed, as are pestphp/pest-plugin-laravel, the unused composer scripts
and check:font; the lint job runs in the feature job, which now installs
node packages so the prebuilt-stylesheet staleness test runs in CI.

Feature suite 1177 passed, Chrome browser suite 299 passed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.github/workflows/tests.yml

@@ -11,28 +11,6 @@ permissions:
   contents: read
 
 jobs:
-  lint:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-        with:
-          persist-credentials: false
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # v2
-        with:
-          php-version: '8.5'
-          tools: composer:v2
-          coverage: none
-
-      - name: Install dependencies
-        run: composer install --no-interaction --no-progress --prefer-dist
-
-      - name: Check formatting
-        run: vendor/bin/pint --test
-
   feature:
     runs-on: ubuntu-latest
 
@@ -54,14 +32,21 @@ jobs:
           tools: composer:v2
           coverage: none
 
-      # material:scheme's tests run the bundled colour script through Node.
+      # material:scheme's tests run the bundled colour script through Node, and the prebuilt
+      # stylesheets' staleness test rebuilds them with the installed Vite.
       - name: Setup Node
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
         with:
           node-version: '22'
 
       - name: Install dependencies
-        run: composer install --no-interaction --no-progress --prefer-dist
+        run: |
+          composer install --no-interaction --no-progress --prefer-dist
+          npm ci
+
+      - name: Check formatting
+        if: matrix.php == '8.5'
+        run: vendor/bin/pint --test
 
       - name: Run feature tests
         run: vendor/bin/pest --testsuite=Feature