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/Letter-to-WASEKU.md

@@ -0,0 +1,59 @@
+---
+title: Letter to WASEKU EN
+description: Open technical letter to the game developer about FrikaMF scope, safety posture, and cooperation.
+sidebar_position: 160
+tags:
+  - audience:gamedev
+---
+
+## Letter to WASEKU (Data Center)
+
+FrikaMF is an **unofficial**, community-driven interoperability framework for `Data Center` modding.
+
+## Intent
+
+- Improve player experience in offline/singleplayer modding contexts.
+- Reduce fragile ad-hoc patches via shared interfaces.
+- Keep behavior transparent and documented.
+
+## Explicit non-goals
+
+- No anti-cheat bypass objective.
+- No exploit tooling for competitive advantage.
+
+## Legal interoperability context
+
+- EU Software Directive Art. 6
+- German UrhG § 69e
+
+## Cooperation offer
+
+We are open to discussing stable modding surfaces or future official API opportunities.
+
+## Contact
+
+- `https://github.com/mleem97/gregFramework`
+
+## Technical sample
+
+### 🦀 Rust
+
+```rust
+#[no_mangle]
+pub extern "C" fn mod_on_scene_loaded(_scene: *const i8) {}
+```
+
+### 🔷 C\#
+
+```csharp
+using MelonLoader;
+
+public sealed class SceneObserver : MelonMod
+{
+    public override void OnSceneWasLoaded(int buildIndex, string sceneName)
+    {
+        LoggerInstance.Msg($"Scene: {sceneName}");
+    }
+}
+```
+