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

i18n/de/docusaurus-plugin-content-docs/current/wiki-import/Contributors/Guides/Contribution-Workflow.md

@@ -0,0 +1,9 @@
+# Contribution Workflow EN
+
+## Quick Flow
+
+1. Create a branch.
+2. Keep changes small and atomic.
+3. Use Conventional Commits.
+4. Update docs and links together.
+5. Open a PR with a clear description.

i18n/de/docusaurus-plugin-content-docs/current/wiki-import/Contributors/Guides/Index.md

@@ -0,0 +1,3 @@
+# Guides Index EN
+
+- [Contribution Workflow EN](Contribution-Workflow)

i18n/de/docusaurus-plugin-content-docs/current/wiki-import/Contributors/Guides/_category_.json

@@ -0,0 +1,3 @@
+{
+  "key": "wiki-import-contributors-guides"
+}