Tyre's architecture evaluation (eval-godot-rust-bridge.md) and Troblum's risk assessment (risk-godot-rust-bridge.md) for the Godot 4 client + Rust simulation server approach. These reports informed the D-020 engine decision and the shift from GDExtension to subprocess/IPC. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>