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/FieldsTest.php

@@ -85,8 +85,7 @@ function fieldProbe()
         </html>
         BLADE));
 
-    return visit('/field-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    return ready(visit('/field-probe'));
 }
 
 it('floats the label while the field has focus or holds a value', function () {
@@ -231,8 +230,7 @@ it('ends a select\'s value before its arrow with an ellipsis, at every size and
         </html>
         BLADE));
 
-    $page = visit('/select-value-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+    $page = ready(visit('/select-value-probe'));
 
     foreach (['format-md', 'format-sm', 'format-xs', 'format-filled', 'format-icon'] as $id) {
         expect($page->script(selectValue($id)))->toBe([true, 'ellipsis', 'nowrap', 'hidden', 'Day first, dots — 17.08.2026']);
@@ -359,8 +357,7 @@ function fieldStateProbe(): mixed
             BLADE);
     });
 
-    return visit('/field-state-probe')->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined'");
+    return ready(visit('/field-state-probe'), livewire: false);
 }
 
 /** A field's edge, "width colour", once its colour transition has run: `Top` outlined, `Bottom` filled. */
@@ -558,8 +555,7 @@ it('keeps a switch\'s track and a checkbox\'s box whole beside long text in a ro
     })()";
 
     // A phone's window: the row is 329px across, less than the text beside each control would take.
-    $page = visit('/selection-row-probe')->resize(393, 800)->waitForEvent('networkidle')
-        ->assertScript("document.readyState === 'complete'");
+    $page = ready(visit('/selection-row-probe')->resize(393, 800), alpine: false, livewire: false);
 
     expect($page->script($control('row-bare-switch', '[data-md-switch]', '[data-md-toggle]')))->toBe([52, true, true])
         ->and($page->script($control('row-labelled-switch', '[data-md-switch]', '[data-md-toggle]')))->toBe([52, true, true])