Stop loading Tailwind on the showcase page

Plan step 38 (last batch): every showcase view is now rewritten
without Tailwind, so the showcase's layout keeps only the JavaScript
entries of the application's configured Vite list (Livewire, Alpine)
before its own bundle link, instead of the whole array — its own CSS
already comes solely from ShowcaseAssetController's bundle
(Stylesheets::bundle() of all.css, showcase.css and the scheme), and
linking the application's build too meant the package's own CSS
(all.css) loaded twice on every showcase page (once through the
Workbench's package.css entry, once through the showcase's own
bundle), besides pulling in Tailwind's CSS for nothing. ErrorPage::
assets() keeps passing the whole configured list: the error pages have
no bundle of their own to fall back on, and step 40 is where their
fallback is redesigned. The config's own comment says so.

The frame's temporary visually-hidden <h2> rule goes too — it existed
only because the first batch could not reach into the still-Tailwind
sections/*.blade.php partials it @include's; every section now
carries its own real `class="md-type-headline-md"` heading, so the
structural rule that quietly hid all of them is dead weight.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

config/livewire-material.php

@@ -192,13 +192,16 @@ return [
     |
     | Every component in every variant, rendered in the application's own
     | scheme. Off unless the application runs locally. 'vite' names the
-    | application's own entry points, for its JavaScript (Livewire, Alpine);
-    | the error pages load them too, showcase or not. A CSS entry here is
-    | temporary — the showcase's own chrome no longer needs one (it serves
-    | its own bundle, ShowcaseAssetController), but the section views
-    | (resources/views/showcase/sections/*) are still Tailwind until step
-    | 38's last batch removes it, and an application without Tailwind of
-    | its own may still want one here for the error pages' build.
+    | application's own entry points: its JavaScript (Livewire, Alpine) and,
+    | for an application that still builds one of its own, a CSS entry. The
+    | showcase page draws its CSS only from its own bundle
+    | (ShowcaseAssetController serves Stylesheets::bundle() of all.css,
+    | showcase.css and the scheme) — nothing on it needs the application's
+    | build, Tailwind included — so the showcase's layout keeps only the
+    | entries here that are not a stylesheet before passing the rest to
+    | @vite(), and links its own bundle after them. The error pages have no
+    | bundle of their own to fall back on, so ErrorPage::assets() still
+    | passes this whole list, CSS included, to @vite().
     |
     */