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/Browser/ErrorPagesTest.php

@@ -111,11 +111,13 @@ it('draws the layout from its own inlined rules under a build that never imports
     File::ensureDirectoryExists($public.'/build/assets');
 
     // The foundation and the scheme, as an application's bundle would carry them; without the font
-    // face, whose relative url would 404 from here and is no part of what this test proves.
-    $css = Stylesheets::bundle([
-        realpath(__DIR__.'/../../resources/css/foundation.css'),
-        workbench_path('resources/css/material-scheme.css'),
-    ]);
+    // face, whose relative url would 404 from here and is no part of what this test proves. The
+    // foundation's files hold either imports or rules (base.css's one import is the font face), so
+    // each file's rules in the order the imports reach them are the bundle.
+    $css = collect(Stylesheets::resolvedFiles([__DIR__.'/../../resources/css/foundation.css']))
+        ->map(fn (string $file): string => (string) preg_replace('/^@import [^;]+;/m', '', File::get($file)))
+        ->push(File::get(workbench_path('resources/css/material-scheme.css')))
+        ->implode("\n");
     File::put($public.'/build/assets/app-probe.css', (string) preg_replace('/@font-face\s*\{[^}]*\}/', '', $css));
     File::put($public.'/build/manifest.json', json_encode([
         'resources/css/app.css' => ['file' => 'assets/app-probe.css', 'src' => 'resources/css/app.css', 'isEntry' => true],