Give a vertical toolbar 24dp and a standard one primary buttons

M3 asks a vertical toolbar for a 24dp margin from the window edge where a
horizontal one keeps 16, and its standard-toolbar colour list ends "Standard
button (Primary)" — the vibrant row of the same list was already honoured, so
the two were being read inconsistently. Both rules are unlayered, because an
icon button's ink is a utility.
Plan: docs/plans/material-3-alignment.md, step 21 (navigation N-12, N-13).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

tests/Feature/Components/AppBarTest.php

@@ -86,7 +86,11 @@ it('keeps a toolbar at the bottom clear of the navigation bar', function () {
     expect($css)
         // Never a sum: --material-bottom-bar already swallows the bottom safe area (N-02).
         ->toContain('bottom: calc(max(var(--material-bottom-bar, 0px), var(--material-safe-bottom, env(safe-area-inset-bottom))) + 1rem);')
-        ->toContain('bottom: var(--material-bottom-bar, 0px);');
+        ->toContain('bottom: var(--material-bottom-bar, 0px);')
+        // A vertical toolbar keeps 24dp from the edge where a horizontal one keeps 16 (N-12).
+        ->toContain('inset-inline-end: calc(1.5rem + var(--material-safe-right, env(safe-area-inset-right)));')
+        // A standard toolbar's standard buttons are primary (N-13).
+        ->toContain('[data-toolbar]:not([data-vibrant]) [data-icon-button]:not([aria-pressed="true"]) {');
 });
 
 it('offers M3\'s three contrast levels, marking the one in force', function () {