Automated Compilation Verification Across All Concerto Code Generation Languages

Concerto is the modeling language of the Accord Project. It supports code generation for 16 target languages and schema formats such as Java, TypeScript, Go, Rust, C#, GraphQL, and Protobuf. At present, CI only checks that the generator runs without crashing. It does not verify that the generated code compiles or validates in its target environment. This allows broken code to reach users without detection. This project adds full compilation and validation checks across all 16 targets through three deliverables. The first deliverable is a set of Docker images, one for each target. Each image includes the Concerto CLI and the required language toolchain. These images are published to the GitHub Container Registry with layer caching enabled. The second deliverable is a GitHub Actions matrix workflow. It generates code from a test corpus, runs it inside the correct image, and executes the compiler or validator for every pull request. The workflow fails immediately if the output is invalid. The third deliverable is a versioned test corpus of .cto model files. These files cover all Concerto language constructs such as primitives, optionals, arrays, inheritance, enumerations, and relationships. This ensures full coverage of code generation features.