chore: initialize gregWiki standalone repository

reference/wiki-mapping.md

@@ -0,0 +1,26 @@
+---
+id: wiki-mapping
+title: Wiki to Docusaurus Mapping
+slug: /reference/wiki-mapping
+---
+
+## Why this mapping exists
+
+The repository currently stores canonical docs in `.wiki/`. This page defines how those pages are grouped in Docusaurus.
+
+## Audience buckets
+
+- **Newbies**: install/update/troubleshooting, legal basics
+- **Intermediates**: hooking, bridge usage, mod config, workflows
+- **Pros**: architecture, runtime internals, release system, roadmap
+
+## Suggested migration order
+
+1. Start with onboarding pages (`Home`, End-User, Mod-Developer).
+2. Migrate runtime references (`Architecture`, `FFI-Bridge-Reference`, `Web-UI-Bridge`).
+3. Migrate governance pages (`Contributors`, Roadmap, Tasklist).
+4. Keep bilingual mirrors where needed.
+
+## Sync strategy
+
+Use `npm run wiki:sync` to copy `.wiki/*.md` into a generated docs area for review-based migration.