CLAUDE.md

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+# Casino Gaming Platform - Claude Assistant Guide
+
+## Build Commands
+
+### Frontend
+- Build: `bun run build` or `bunx @angular/cli build`
+- Start dev server: `bun run start` or `bunx @angular/cli serve --proxy-config src/proxy.conf.json`
+- Format: `bun run format` or `prettier --write "src/**/*.{ts,html,css,scss}"`
+
+### Backend
+- Build: `./gradlew build` or `./gradlew clean build`
+- Run: `./gradlew bootRun`
+- Generate JAR: `./gradlew bootJar`
+
+## Lint/Test Commands
+
+### Frontend
+- Lint: `bun run lint` or `ng lint`
+- Test all: `bun run test` or `bunx @angular/cli test`
+- Test single file: `bunx @angular/cli test --include=path/to/test.spec.ts`
+
+### Backend
+- Test all: `./gradlew test`
+- Test single class: `./gradlew test --tests "FullyQualifiedClassName"`
+- Checkstyle: `./gradlew checkstyleMain checkstyleTest`
+
+## Code Style Guidelines
+
+### Frontend (Angular)
+- Use PascalCase for class names with suffixes (Component, Service)
+- Use kebab-case for component selectors with "app-" prefix
+- File naming: `name.component.ts`, `name.service.ts`
+- Import order: Angular → third-party → local
+- Use RxJS catchError for HTTP error handling
+
+### Backend (Java)
+- Use PascalCase for classes with descriptive suffixes (Controller, Service, Entity)
+- Use camelCase for methods and variables
+- Domain-driven package organization
+- Prefix DTOs with domain and suffix with "Dto"
+- Use Spring's global exception handling with custom exceptions