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>

tests/Feature/ShowcaseAssetsTest.php

@@ -3,17 +3,14 @@
 use Illuminate\Support\Facades\Vite;
 use Illuminate\Support\Str;
 use NoNameWeb\LivewireMaterial\Http\Controllers\ShowcaseAssetController;
-use NoNameWeb\LivewireMaterial\Support\Stylesheets;
+use NoNameWeb\LivewireMaterial\Support\Scheme;
+use NoNameWeb\LivewireMaterial\Support\SchemeStylesheet;
 
 /**
- * The showcase's own stylesheet route (plan step 38): `all.css` plus `showcase.css`, bundled by
- * `Stylesheets::bundle()` and served without the application's Vite build, and the two package
+ * The showcase's own stylesheet route (plan step 38): `all.css` plus `showcase.css`, prebuilt into
+ * resources/dist/showcase.css and served without the application's Vite build, and the two package
  * folders its relative `url()`s point into.
  */
-afterEach(function () {
-    Stylesheets::resetCache();
-});
-
 it('serves the bundle as long-cached CSS at the hash of its own content', function () {
     $response = $this->get(ShowcaseAssetController::url())
         ->assertOk()
@@ -35,11 +32,14 @@ it('redirects a hash that does not match the current bundle to the current one',
 it('serves the font and svg files the bundle references, mime-typed by extension', function () {
     $css = $this->get(ShowcaseAssetController::url())->getContent();
 
+    // The stylesheet sits in assets/css/, so its relative `../fonts/…` and `../svg/…` land on the asset route.
+    expect(dirname(parse_url(ShowcaseAssetController::url(), PHP_URL_PATH)))->toBe(route('livewire-material.asset', ['path' => 'css'], false))
+        ->and($css)->toContain("url('../fonts/google-sans-flex/GoogleSansFlex-Latin.woff2')")
+        ->toContain('url("../svg/symbols/outlined/check.svg")');
+
     $fontUrl = route('livewire-material.asset', ['path' => 'fonts/google-sans-flex/GoogleSansFlex-Latin.woff2'], false);
     $svgUrl = route('livewire-material.asset', ['path' => 'svg/symbols/outlined/check.svg'], false);
 
-    expect($css)->toContain($fontUrl)->toContain($svgUrl);
-
     $this->get($fontUrl)
         ->assertOk()
         ->assertHeader('Content-Type', 'font/woff2')
@@ -93,7 +93,6 @@ it('bundles the application generated scheme, unlayered, when one sits beside it
 
     file_put_contents($dir.'/material-scheme.css', ":root { --md-showcase-test-marker: #123456; }\n");
     config(['livewire-material.scheme' => $dir.'/material-scheme.json']);
-    Stylesheets::resetCache();
 
     try {
         $this->get(ShowcaseAssetController::url())
@@ -105,15 +104,12 @@ it('bundles the application generated scheme, unlayered, when one sits beside it
     }
 });
 
-it('falls back to Scheme::load() in the default shape when no generated stylesheet is found', function () {
+it('falls back to the scheme JSON in the generated shape when no generated stylesheet is found', function () {
     config(['livewire-material.scheme' => sys_get_temp_dir().'/livewire-material-showcase-missing-'.Str::random(8).'.json']);
-    Stylesheets::resetCache();
 
     $css = $this->get(ShowcaseAssetController::url())->assertOk()->getContent();
-
-    // The fallback's own one-line selector list, distinct from tokens/scheme.css's multi-line one
-    // (already in all.css), so its presence here can only come from the appended fallback block.
-    expect($css)->toContain("[data-contrast='medium'], [data-contrast='medium'][data-theme='light'], [data-contrast='medium'] [data-theme='light']");
+    expect($css)->toEndWith(SchemeStylesheet::withProfiles(...Scheme::forStylesheet()))
+        ->toContain("[data-contrast='medium'][data-theme='dark']");
 });
 
 it('mounts none of the showcase asset routes when the showcase is off', function () {
@@ -122,7 +118,7 @@ it('mounts none of the showcase asset routes when the showcase is off', function
     $this->refreshApplication();
 
     try {
-        $this->get('/material/showcase.0000000000000000.css')->assertNotFound();
+        $this->get('/material/assets/css/showcase.0000000000000000.css')->assertNotFound();
         $this->get('/material/assets/fonts/google-sans-flex/GoogleSansFlex-Latin.woff2')->assertNotFound();
     } finally {
         putenv('MATERIAL_SHOWCASE=true');