[nick2781]

Add a C# Godot client for ark's authoritative guest-room example. Two guests can connect, see each other, move, disconnect and rejoin with a fresh identity. Portable framing, TCP transport and room state remain independent of Godot.

Provide a licensed pixel-art village plaza, directional walking sprites, explicit YOU/PLAYER nameplates and distinct overhead/ground markers. Compact HUD and connection controls center the room; the network drawer is closed by default and raw-position markers are optional. Display smoothing remains presentation-only. Foldable diagnostics show the actual endpoint, proposed and confirmed sequences/coordinates, room-update age, matching-pong application RTT and transport counters. Both languages document the protocol and data flow; the sample does not implement prediction, authentication or persistence.

Validation:

• Twelve permanent C# test groups and formatting passed.
• Official Godot 4.7.2 .NET build had zero warnings/errors; editor import and offline C# execution passed.
• Two actual Godot instances against the real ark launcher/plugins/Kernel passed authoritative movement and fresh self/peer identities after rejoin. Local logs and SDKs remain outside the repository.
• Three hosted OS checks run portable tests; Linux additionally verifies the Godot archive and builds/imports/runs the offline scene. Hosted CI does not start the ark server.

Server counterpart: OpenArkStudio/ark#173. Merge after the server change is accepted and this exact client head passes its checks. The server runtime used locally is source 33f906bb; subsequent server commits only change tests, CI and documentation.

Art: a 79 KB selected PNG subset of Pixel-Boy and AAA’s Ninja Adventure under CC0-1.0, with full license and original-file/hash inventory. Native-window inspection at the final client head verified both actual guests, role markers and keyboard movement.