Add initial documentation and structure for DorkNet project

- Create README.md for project overview and setup instructions
- Add admin-ui/README.md for admin UI details and development setup
- Introduce client-mod/README.md explaining the MelonLoader mod functionality
- Establish docker/README.md for Docker setup and configuration
- Create docs/README.md to index project documentation
- Implement advanced-setup.md for Docker stack configuration
- Document architecture in architecture.md
- Provide easy-setup.md for hosting instructions
- Add FAQ.md for common questions and legal considerations
- Create joining-a-server.md for player connection instructions
- Establish troubleshooting.md for common issues and resolutions
- Introduce easy-app/README.md for the unified desktop application
- Add server/README.md for ASP.NET Core backend details
- Document tools/README.md for CLI helper scripts

DISCLAIMER.md

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+# Disclaimer
+
+DorkNet is an independent, fan-made, clean-room reimplementation of the
+backend protocol used by the **2020 release of Rec Room** (build
+`Recroom_Release` dated 2020.03.10).
+
+It is **not** affiliated with, endorsed by, or sponsored by:
+
+- Rec Room Inc.
+- Against Gravity (the original developer)
+- Photon (Exit Games GmbH)
+- Steam / Valve Corporation
+- Meta / Oculus
+
+**Rec Room™**, the Rec Room logo, and all in-game art, audio, models,
+locations, characters, and brand assets are the intellectual property of
+Rec Room Inc. and are used here only for descriptive interoperability.
+
+## What DorkNet does and doesn't ship
+
+DorkNet's repository contains:
+- Original server code (ASP.NET Core)
+- Original admin tooling (React)
+- Original MelonLoader mod (C#)
+- Patcher scripts that operate on the user's own local Rec Room install
+
+DorkNet's repository **does not** contain:
+- The Rec Room game executable, assets, or any redistributable Rec Room IP
+- Decompiled Rec Room source or IL2CPP dumps
+- Patched copies of `Recroom_Release.exe`, `global-metadata.dat`, or any
+  Rec Room game file
+
+You must acquire the 2020.03.10 Rec Room client yourself through whatever
+means are legal in your jurisdiction (e.g. SteamDB depot tools against an
+account that owns Rec Room). The patcher runs on your machine, modifies
+files locally, and never uploads anything anywhere.
+
+## Use at your own risk
+
+This is hobby software. There are no warranties of any kind. If running
+DorkNet violates a license you agreed to (e.g. Steam Subscriber Agreement,
+Rec Room Terms of Service), that's between you and the rights holder.
+DorkNet's authors take no responsibility for consequences arising from
+your use of the software.
+
+## Takedown requests
+
+If you represent Rec Room Inc. or another rights holder and wish to discuss
+this project, please open an issue on the public repository and we will
+respond promptly.