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

docs/topics/end-user/overview.md

@@ -0,0 +1,13 @@
+---
+title: End users
+sidebar_label: End users (hub)
+description: FAQs, install paths, troubleshooting — mostly wiki-import.
+---
+
+# End users
+
+**Spielerinnen und Spieler** — Mods installieren und spielen, ohne am Framework mitzuentwickeln. Überblick über alle Rollen: [By audience](/wiki/topics/audiences/overview).
+
+- [By audience — newbies](/wiki/audiences/newbies)
+- Imported: [End user index](/wiki/wiki-import/EndUser/), [Data center FAQ](/wiki/wiki-import/DataCenterFAQ/), [Known incompatibilities](/wiki/wiki-import/Known-Incompatibilities)
+- Imported: [End user release notes](/wiki/wiki-import/EndUser/End-User-Release)