Merge Docusaurus site: all content under docs/, align with gregFramework split layout

- Move markdown and wiki-import tree into docs/; keep app shell at repo root
- Point docusaurus docs path to docs/; edit links to mleem97/gregWiki
- Sync and i18n scripts use gregWiki root and ../.wiki under gregFramework
- Sidebars: workspace layout from root docs ids; plugins under mods/extensions
- Fix redirects, module catalog URLs, release note paths, and wiki-import category keys
- Update repo inventory for split repos; Dockerfile for single-repo context

Made-with: Cursor

scripts/write-wiki-import-category-keys.mjs

@@ -0,0 +1,38 @@
+/** Idempotent: add unique Docusaurus sidebar keys for wiki-import subfolders. */
+import fs from 'node:fs';
+import path from 'node:path';
+
+const pairs = [
+  ['Contributors/Guides', 'wiki-import-contributors-guides'],
+  ['Contributors/Reference', 'wiki-import-contributors-reference'],
+  ['Contributors/Troubleshooting', 'wiki-import-contributors-troubleshooting'],
+  ['EndUser/Guides', 'wiki-import-enduser-guides'],
+  ['EndUser/Reference', 'wiki-import-enduser-reference'],
+  ['EndUser/Troubleshooting', 'wiki-import-enduser-troubleshooting'],
+  ['ModDevs/Guides', 'wiki-import-moddevs-guides'],
+  ['ModDevs/Reference', 'wiki-import-moddevs-reference'],
+  ['ModDevs/Troubleshooting', 'wiki-import-moddevs-troubleshooting'],
+  ['TechnicalReference/Guides', 'wiki-import-techref-guides'],
+  ['TechnicalReference/Reference', 'wiki-import-techref-reference'],
+  ['TechnicalReference/Troubleshooting', 'wiki-import-techref-troubleshooting'],
+];
+
+const bases = [
+  path.resolve(import.meta.dirname, '../docs/wiki-import'),
+  path.resolve(
+    import.meta.dirname,
+    '../i18n/de/docusaurus-plugin-content-docs/current/wiki-import',
+  ),
+];
+
+for (const base of bases) {
+  if (!fs.existsSync(base)) continue;
+  for (const [rel, key] of pairs) {
+    const dir = path.join(base, rel);
+    if (!fs.existsSync(dir)) continue;
+    const target = path.join(dir, '_category_.json');
+    const body = JSON.stringify({ key }, null, 2) + '\n';
+    fs.writeFileSync(target, body);
+    console.log('wrote', target);
+  }
+}