src/ReactorMaintenance.Simulation: UI-independent level model, editor operations, validation, forecasts, simulation turns, versioned JSON serialization, and deterministic balancing defaults.
src/ReactorMaintenance.Godot: empty Godot 4.5 .NET frontend project shell referencing the simulation core.
src/ReactorMaintenance.Win2D: Win2D editor app for authoring terrain, underground fuel/coolant/electricity networks, props, explicit leak access faces, door edges, reactor consumer bindings, rule events, surface hazards, robot start, loading/saving levels, ending turns, interacting with props, and activating a ready reactor.
tests/ReactorMaintenance.Simulation.Tests: unit tests for deterministic simulation behavior, validation, serialization, and editor operations.

Editor Controls

Left click selects or paints with the current tool. Right click clears the selected cell's prop, surface hazards, leaks, doors, and reactor control.
Door authoring is explicit: select the Door tool, click the door cell, then click the adjacent floor cell that defines the blocked edge.
Electricity wall leaks are explicit: select the Electricity Leak tool, click the wall network cell, then click the adjacent floor access face.
Reactor bindings are explicit: select or place a reactor control, select a matching consumer cell, then use the Fuel, Coolant, or Electric binding action in the inspector.
Rule event authoring is available from the inspector for next-turn warnings and selected-cell leak events; authored events are saved in the version 2 JSON schema.

Commands

dotnet build src\ReactorMaintenance.Godot\ReactorMaintenance.Godot.csproj
..\Godot_v4.5.1-stable_mono_win64\Godot_v4.5.1-stable_mono_win64_console.exe --headless --editor --quit --path src\ReactorMaintenance.Godot
dotnet test tests\ReactorMaintenance.Simulation.Tests\ReactorMaintenance.Simulation.Tests.csproj
dotnet build src\ReactorMaintenance.Win2D\ReactorMaintenance.Win2D.csproj -p:Platform=x64 -p:EnableWindowsTargeting=true
dotnet run --project src\ReactorMaintenance.Win2D\ReactorMaintenance.Win2D.csproj -p:Platform=x64

The WinUI/XAML compiler is Windows-specific. On Linux, the simulation tests run normally, but the Win2D app build must be verified in a Windows-capable environment.