webgit/.github/copilot-instructions.md

Copilot Instructions

System Requirements

This project targets retro systems (Windows 3.11, Windows 98, FreeDOS). The UI must work in period-appropriate browsers:

• No JavaScript — all interactivity must be server-side.
• No CSS — use HTML attributes (border, cellpadding, cellspacing) for layout.
• Use table-based layouts to arrange elements side by side.
• Keep HTML simple: plain <form>, <table>, <input>, <a> elements only.

Testing

• All new functionality must have unit tests.
• Service-layer tests go in src/test/java/.../service/GitServiceTest.java and use real JGit repositories created in @TempDir directories.
• Controller tests go in src/test/java/.../controller/RepoControllerTest.java and use @WebMvcTest with @MockitoBean for the service layer.
• Run ./gradlew test to verify all tests pass before considering a change complete.

Tech Stack

• Java 25, Spring Boot 4.0, Thymeleaf, Gradle
• JGit for all Git operations (no shelling out to git)
• Lombok for boilerplate reduction (@Getter, @Setter, @RequiredArgsConstructor)