---
name: stage-tamagotchi-godot-csharp
description: >-
  Apply engine-local C# development method and code style only when working in
  `engines/stage-tamagotchi-godot`, including its `.cs` files, `.csproj`,
  engine-local `.editorconfig`, and Godot-specific C# structure decisions. Do
  not use for TypeScript, Electron, renderer code, shared workspace config,
  repo-wide C# conventions, or any file outside
  `engines/stage-tamagotchi-godot`.
---

# Stage Tamagotchi Godot C#

1. Confirm every touched file is under `engines/stage-tamagotchi-godot`.
   If the task crosses that boundary, do not use this skill as the governing
   instruction set.
2. Before editing C# files, read:
   - `engines/stage-tamagotchi-godot/docs/csharp-development-method.md`
   - `engines/stage-tamagotchi-godot/.editorconfig`
   - `engines/stage-tamagotchi-godot/docs/csharp-style.md`
3. Treat the development-method document as the primary source of truth for
   structure and feature usage. Treat `.editorconfig` and `csharp-style.md` as
   secondary formatting and naming guidance.
4. Classify the change before coding:
   - scene script
   - runtime core
   - contract and transport
   - registry and discovery
   - tooling and editor support
5. Apply the local design method:
   - keep scene scripts thin
   - push durable logic into plain C# runtime objects
   - make subsystem boundaries explicit through types
   - use reflection for discovery, not steady-state execution
   - use LINQ for cold-path querying and shaping, not hot-path loops
   - use async at I/O and process boundaries, not as a default runtime model
6. Apply the local low-level style baseline:
   - `engines/stage-tamagotchi-godot/.editorconfig`
   - 4 spaces, LF, UTF-8, 100 columns
   - Allman braces
   - `System.*` usings first
   - keyword types such as `string` and `int`
   - `var` only when the type is obvious
   - `PascalCase` for types and members
   - `camelCase` for locals and parameters
   - `_camelCase` for private fields
7. Keep changes local to the engine. Do not push these C# rules into repo
   root config or other workspaces.
8. After changing C# files or the engine-local `.editorconfig`, run the
   verification command from `engines/stage-tamagotchi-godot`:

```powershell
dotnet format --verify-no-changes
```

If verification fails because of pre-existing files outside the intended change
scope, report that clearly instead of broadening the edit set silently.