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/Components/SelectionTest.php

@@ -150,8 +150,7 @@ it('draws the checkbox from its stylesheet, on the row the selection controls sh
         ->toMatch('/\\[data-md-checkbox-box\\] \\{[^}]*width: 18px;[^}]*height: 18px;/')
         ->and((string) file_get_contents(__DIR__.'/../../../resources/css/components/selection.css'))
         ->toContain('[data-md-selection-row]')
-        ->toContain('@layer material.components')
-        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/all.css'))->toContain("@import './components/checkbox.css';");
+        ->toContain('@layer material.components');
 });
 
 it('lays the radio group out from its stylesheet, inline only from 600px', function () {
@@ -159,7 +158,6 @@ it('lays the radio group out from its stylesheet, inline only from 600px', funct
 
     expect($css)->toContain("@import './selection.css';")
         ->toMatch('/@media \\(width >= 600px\\) \\{\\s*\\[data-md-radio\\]\\[data-md-inline\\] \\[data-md-radio-options\\] \\{\\s*display: flex;/')
-        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/all.css'))->toContain("@import './components/radio.css';")
         ->and((string) $this->blade('<x-radio name="size" class="app-field-spacing" style="order: 1" :options="[[\'id\' => \'s\', \'name\' => \'S\']]" />'))
         ->toMatch('/data-md-radio\\s+class="app-field-spacing" style="order: 1"/');
 });
@@ -167,6 +165,5 @@ it('lays the radio group out from its stylesheet, inline only from 600px', funct
 it('draws the switch from its stylesheet', function () {
     expect((string) file_get_contents(__DIR__.'/../../../resources/css/components/toggle.css'))
         ->toContain("@import './selection.css';")
-        ->toMatch('/\\[data-md-switch\\] \\{[^}]*width: 52px;[^}]*height: 32px;/')
-        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/all.css'))->toContain("@import './components/toggle.css';");
+        ->toMatch('/\\[data-md-switch\\] \\{[^}]*width: 52px;[^}]*height: 32px;/');
 });