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/PickingTest.php

@@ -75,8 +75,7 @@ function pickProbe()
         </html>
         BLADE));
 
-    return visit('/pick-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    return ready(visit('/pick-probe'));
 }
 
 it('keeps the values of filter chips as the property\'s own type', function () {
@@ -161,8 +160,7 @@ it('hangs a searchable choice\'s list under its field and as wide, bounded at 40
         return [Math.round(field.width), Math.round(list.width), Math.round(list.left - field.left)];
     })()";
 
-    $page = visit('/wide-choices-probe')->resize(1280, 800)->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined'");
+    $page = ready(visit('/wide-choices-probe')->resize(1280, 800), livewire: false);
 
     $page->click('#bounded-zone')->assertScript("document.getElementById('bounded-zone-list').matches(':popover-open')");
 
@@ -177,7 +175,7 @@ it('hangs a searchable choice\'s list under its field and as wide, bounded at 40
 it('opens the search view with the results Livewire renders for the query', function () {
     $view = "document.querySelector('#find-view')";
 
-    // The combobox is the wrapper around the input, which carries `aria-expanded` (inputs.md IN-01).
+    // The combobox is the wrapper around the input, which carries `aria-expanded`.
     $page = pickProbe()
         ->click('#find')
         ->assertScript("getComputedStyle({$view}).display !== 'none'")
@@ -204,7 +202,7 @@ it('says so when nothing matches, and closes on a press outside or a chosen resu
         ->type('#find', 'zzz')
         ->assertSeeIn('#find-view', 'No files match.');
 
-    // The docked view opens over a scrim that covers the rest of the page (inputs.md IN-09), so a
+    // The docked view opens over a scrim that covers the rest of the page, so a
     // press outside the view lands on the scrim.
     $page->click('[data-md-search]:has(#find) [data-md-search-scrim]')
         ->assertScript("getComputedStyle({$view}).display === 'none'");
@@ -266,18 +264,6 @@ it('keeps the docked search above the page while its view closes', function () {
     $page->assertScript("getComputedStyle({$view}).display === 'none' && getComputedStyle(document.querySelector('[data-md-search]:has(#find)')).zIndex !== '50'");
 });
 
-it('closes the docked search view back into its bar, rather than making it vanish', function () {
-    $view = "document.querySelector('#find-view')";
-
-    $page = pickProbe()
-        ->click('#find')
-        ->assertScript("getComputedStyle({$view}).display !== 'none' && getComputedStyle({$view}).opacity === '1'");
-
-    expect($page->script(searchCloseSample('[data-md-search-view]', 'parseFloat(getComputedStyle(element).opacity)')))->toBeTrue();
-
-    $page->assertScript("getComputedStyle({$view}).display === 'none'");
-});
-
 it('takes the whole screen on a compact window, with a back arrow', function () {
     $page = pickProbe()->resize(400, 800);