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/ActionsTest.php

@@ -122,14 +122,12 @@ function menuMorphProbe()
         </html>
         BLADE));
 
-    return visit('/menu-morph-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    return ready(visit('/menu-morph-probe'));
 }
 
 function showcase(string $section = 'buttons')
 {
-    return visit("/material/{$section}")->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    return ready(visit("/material/{$section}"));
 }
 
 function focused(string $expression): string
@@ -308,8 +306,7 @@ it('hangs a menu on its menu button, even when the button is fixed to a corner o
     $placed = menuAgainst('fab', 'Create');
     $above = "(({ control, menu }) => getComputedStyle(document.querySelector('[data-test=\"fab\"]')).position === 'fixed' && menu.bottom <= control.top && control.top - menu.bottom <= 16 && Math.abs(menu.right - control.right) <= 16 && menu.left >= 0 && menu.top >= 0)({$placed})";
 
-    $page = visit('/menu-anchor-probe')->resize(400, 800)->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    $page = ready(visit('/menu-anchor-probe')->resize(400, 800));
 
     $page->click('@fab')
         ->assertAttribute('@fab', 'aria-expanded', 'true')
@@ -559,8 +556,7 @@ it('hides a disabled fab button below 600px, as M3 removes a FAB whose action is
         return [getComputedStyle(button).display !== 'none' && button.checkVisibility(), getComputedStyle(button).position === 'fixed'];
     })()";
 
-    $page = visit('/disabled-fab-probe')->resize(393, 800)->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Livewire !== 'undefined'");
+    $page = ready(visit('/disabled-fab-probe')->resize(393, 800), alpine: false);
 
     expect($page->script($state('enabled-fab')))->toBe([true, true])
         ->and($page->script($state('disabled-fab')))->toBe([false, true])
@@ -627,8 +623,7 @@ function groupSizeProbe()
         </html>
         BLADE));
 
-    return visit('/group-size-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined'");
+    return ready(visit('/group-size-probe'), livewire: false);
 }
 
 it('takes a press at an xs or sm group segment\'s 48px edge, past what it draws, from the shared classes', function () {
@@ -767,8 +762,7 @@ function longMenuProbe()
         </html>
         BLADE));
 
-    return visit('/long-menu-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined'");
+    return ready(visit('/long-menu-probe'), livewire: false);
 }
 
 function sheetMenuProbe()
@@ -790,8 +784,7 @@ function sheetMenuProbe()
         </html>
         BLADE));
 
-    return visit('/sheet-menu-probe')->resize(400, 800)->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    return ready(visit('/sheet-menu-probe')->resize(400, 800));
 }
 
 it('opens a submenu with Right, Enter or Space, and closes it with Left or Escape, back on the item', function () {
@@ -984,8 +977,7 @@ function longFabMenuProbe()
         </html>
         BLADE));
 
-    return visit('/long-fab-menu-probe')->resize(320, 420)->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined'");
+    return ready(visit('/long-fab-menu-probe')->resize(320, 420), livewire: false);
 }
 
 it('scrolls the FAB menu\'s items on a short window, behind the close button, which stays put', function () {