docs: Divi guides shortform/placeholders, hints name the write tools; test: Divi write end-to-end; version 0.3.0

- Hints (PostPresenter::DIVI_NOTE, outline, catalog) and server instructions (tree_rev rule)
  name the Divi write tools; guides divi-shortform and divi-placeholders, additions to
  divi-structure, divi-attrs, overview (tool groups, 'nur lesen'), workflows, content-types.
- D7 wording and the S7 exception in readme, guides and spec 1.3/5.2; readme 0.3.0.
- ToolNamingTest: every referenced guide topic exists; overview lists exactly the topics.
- tests/Integration/divi-write-smoke.sh: all write tools via OAuth, editor without
  unfiltered_html with benign probes (S6), Divi's own save filters on the new fixture
  synthetic-divi-filters.html (S7); admin-render.php accepts the new wrap class.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7

src/Guides/InstructionsBuilder.php

@@ -53,8 +53,12 @@ final class InstructionsBuilder
         }
 
         $divi = str_contains(', ' . $active . ',', ', divi,')
-            ? ['- Divi-Seiten: vor Änderungen lit-divi-outline und lit-divi-design-system lesen; Aufbau: lit-guide '
-                . 'topic "divi-structure".']
+            ? [
+                '- Divi-Seiten: vor Änderungen lit-divi-outline und lit-divi-design-system lesen; Aufbau: lit-guide '
+                    . 'topic "divi-structure".',
+                '- Divi-Änderungen verlangen die tree_rev aus lit-divi-outline bzw. der letzten Divi-Antwort '
+                    . '(nicht rev).',
+            ]
             : [];
 
         return implode("\n", array_merge($lines, [