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/releases/mods/fmf-ui-replacement-mod-release.mdx

@@ -0,0 +1,15 @@
+---
+title: FMF.UIReplacementMod Release
+sidebar_label: FMF.UIReplacementMod
+---
+
+import ModReleasePage from '@site/src/components/ModReleasePage';
+
+<ModReleasePage
+  title="FMF.UIReplacementMod"
+  kind="mod"
+  dllName="FMF.UIReplacementMod.dll"
+  description="Replaces and modernizes selected in-game UI layers with improved readability and layout behavior."
+  banner="UI replacement mod release"
+  releaseNotesPath="/mods/extensions/fmf-ui-replacement-mod"
+/>