feat: F4.8b the documentation mode in the editor

Java's third mode button, the sidebar's text and structure field (dropped
with its middle under the pointer), items over the network that are moved,
resized by Java's rule, typed into on their Y.Text, coloured and set in
size and style from Java's menu, deleted; Java's paint per mode, measured
in F4.8a.

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

packages/editor/test/i18n.test.ts

@@ -244,6 +244,18 @@ const FROM_JAVA: Readonly<Record<string, string>> = {
   'installation.apply': 'installationsdialog_msg2',
   'mode.currentSpeed': 'guimainmemu_msg15',
   'menu.showDesktop': 'guievents_msg3',
+  'mode.documentation': 'guimainmemu_msg14',
+  'docu.text': 'docusidebar_msg1',
+  'docu.rectangle': 'docusidebar_msg3',
+  'docu.fontSize': 'guievents_msg15',
+  'docu.sizeNormal': 'guievents_msg16',
+  'docu.sizeLarge': 'guievents_msg17',
+  'docu.sizeVeryLarge': 'guievents_msg18',
+  'docu.fontStyle': 'guievents_msg14',
+  'docu.stylePlain': 'guievents_msg19',
+  'docu.styleItalic': 'guievents_msg20',
+  'docu.styleBold': 'guievents_msg21',
+  'docu.color': 'guievents_msg13',
   'capture.title': 'lauscherdialog_msg1',
   'capture.number': 'rp_lauscher_msg1',
   'capture.time': 'rp_lauscher_msg2',