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>

resources/js/navigation.js

@@ -22,6 +22,7 @@
  * `materialNavigationBar` is `<x-navigation-bar hide-on-scroll>` — see the same file's sibling.
  */
 import { from, upTo } from './breakpoints.js'
+import { remember } from './util.js'
 
 /** The root of every interactive rail on the page once its view is initialised: what `toggle()` asks. */
 const rails = new Set()
@@ -102,11 +103,7 @@ document.addEventListener('alpine:init', () => {
             root.dataset.rail = collapsed ? 'collapsed' : 'expanded'
             root.removeAttribute('data-rail-auto')
 
-            try {
-                localStorage.setItem(root.dataset.railKey || 'material-rail', root.dataset.rail)
-            } catch {
-                // Blocked storage: the rail still toggles, it just will not remember.
-            }
+            remember(root.dataset.railKey || 'material-rail', root.dataset.rail)
         },
 
         show() {
@@ -125,8 +122,7 @@ document.addEventListener('alpine:init', () => {
         wide: mode === 'adaptive' ? from('expanded').matches : false,
         roomy: mode === 'adaptive' ? from('large').matches : false,
         tight: mode === 'collapsible' ? upTo('medium').matches : false,
-        queries: [],
-        listeners: [],
+        controller: null,
 
         /**
          * `data-md-closing` while a rail that was open over the page leaves it: `sheet` when the
@@ -144,6 +140,7 @@ document.addEventListener('alpine:init', () => {
 
         init() {
             rails.add(this.$root)
+            this.controller = new AbortController()
 
             if (mode !== 'adaptive') {
                 // Below `medium` a collapsible rail is held at its collapsed width whatever the
@@ -181,16 +178,12 @@ document.addEventListener('alpine:init', () => {
         },
 
         watch(query, onChange) {
-            const listener = (event) => onChange(event.matches)
-
-            query.addEventListener('change', listener)
-            this.queries.push(query)
-            this.listeners.push(listener)
+            query.addEventListener('change', (event) => onChange(event.matches), { signal: this.controller.signal })
         },
 
         destroy() {
             rails.delete(this.$root)
-            this.queries.forEach((query, index) => query.removeEventListener('change', this.listeners[index]))
+            this.controller.abort()
         },
 
         /**