feat(css): globales CSS bearbeiten (lit/divi-custom-css-get und -update)

WordPress „Zusätzliches CSS“ (in Divi „Eigenes CSS“) über die Design-Pipeline: Probelauf mit Zeilen-Diff,
design_rev, Bestätigung, Snapshot, Rollback und Wiederherstellen (Bereich custom_css). Der Guard lehnt </style,
<script, expression(, javascript: und neue @import ab und warnt bei fremden Hosts; nur Neues zählt, Bestehendes
blockiert keine Änderung. Erfordert edit_css und die Divi-Rolle Theme-Anpassung.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tests/Unit/Integrations/Divi/Release/DiviToolFeaturesTest.php

@@ -71,6 +71,8 @@ final class DiviToolFeaturesTest extends TestCase
         'lit/divi-variables-set' => ['design-read', 'variable-write'],
         'lit/divi-theme-options-get' => ['theme-option-read'],
         'lit/divi-theme-options-update' => ['theme-option-read', 'theme-option-write'],
+        'lit/divi-custom-css-get' => ['theme-option-read'],
+        'lit/divi-custom-css-update' => ['theme-option-read', 'theme-option-write'],
         'lit/divi-fonts-upload' => ['font-upload'],
         // Library (divi-library)
         'lit/library-list' => ['library-read', 'roles'],
@@ -369,6 +371,7 @@ final class DiviToolFeaturesTest extends TestCase
             'lit/divi-presets-set' => 'preset-write', 'lit/divi-presets-delete' => 'preset-write',
             'lit/divi-colors-set' => 'color-write', 'lit/divi-variables-set' => 'variable-write',
             'lit/divi-theme-options-update' => 'theme-option-write', 'lit/divi-fonts-upload' => 'font-upload',
+            'lit/divi-custom-css-update' => 'theme-option-write',
             'lit/divi-design-restore' => 'preset-write', 'lit/divi-design-detach' => 'preset-write',
             'lit/divi-presets-assign' => 'page-write', 'lit/tb-assign' => 'tb-write', 'lit/tb-activate' => 'tb-write',
             'lit/tb-create-template' => 'tb-write',