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+# Bead bf-ns9q: C# Starter Kit Registration
+
+## Task
+C# starter kit — starters/csharp/ exists but CI workflow and plan §5.8 coverage missing
+
+## Status: ALREADY COMPLETED
+
+The C# starter kit registration was already completed in commit `55c594c01909643ac812f166d880b62a8da30b0d`.
+
+## Verification (2026-05-22)
+
+All required components are in place:
+
+1. **CI Workflow** - EXISTS at `starters/csharp/.github/workflows/build.yml`
+   - Standard GitHub Actions workflow
+   - Builds and pushes Docker image to GHCR
+   - Identical structure to other language starter kits
+
+2. **Plan §5.8 Coverage** - EXISTS at line 986
+   ```
+   | `acb-starter-csharp` | Template repo | ASP.NET Core minimal API, zero external dependencies |
+   ```
+
+3. **Plan §11.2 Template Repos** - EXISTS at line 2628
+   ```
+   | `acb-starter-csharp` | C# | ASP.NET Core minimal API, System.Security.Cryptography HMAC, Dockerfile |
+   ```
+
+4. **Evolution Validation Test Suite** - C# is included in the supported language list
+
+5. **C# Starter Kit Implementation** - COMPLETE at `starters/csharp/`
+   - Program.cs: ASP.NET Core minimal API with HMAC auth
+   - Grid.cs: Grid utility functions
+   - tests/ directory with test files
+   - Dockerfile for container builds
+   - README.md with documentation
+   - acb-starter-csharp.csproj project file
+
+## Conclusion
+
+No action was required. The bead task was already completed by the prior commit. The C# starter kit is fully registered and documented alongside the other 7 language starter kits (Python, Go, Rust, PHP, TypeScript, Java, JavaScript).