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/reference/overview.md

@@ -0,0 +1,17 @@
+---
+title: Reference & technical
+sidebar_label: Reference & technical
+description: Mapping tables, hook naming, generated catalogs, release channels.
+---
+
+# Reference & technical
+
+Authoritative reference material for the framework and documentation site.
+
+- [Wiki mapping](/wiki/reference/wiki-mapping) — how paths line up across systems.
+- [Mod store vision](/wiki/reference/mod-store-vision) — product direction notes.
+- [FMF hook naming](/wiki/reference/fmf-hook-naming) — conventions for hook identifiers.
+- [FMF hooks catalog](/wiki/reference/fmf-hooks-catalog) — generated listing from framework sources.
+- [Release channels](/wiki/reference/release-channels) — how builds are staged.
+
+See also [FFI, hooks & Lua](/wiki/topics/ffi-and-hooks/overview) for imported deep dives from the legacy wiki.