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CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is an AI-integrated OJ (Online Judge) judging system with a microservices architecture. The system allows users to submit code for programming problems, which is then judged automatically. It also includes AI features to assist with problem-solving and code evaluation.
+
+## Architecture
+
+The project follows a microservices architecture pattern built with Spring Boot and Spring Cloud Alibaba:
+
+### Core Modules:
+
+1. **aioj-backend-common**: Common utilities and dependencies shared across all modules.
+2. **aioj-backend-gateway**: API gateway that routes requests to the appropriate microservices.
+3. **aioj-backend-judge-service**: Handles code submission, compilation, and judging processes.
+4. **aioj-backend-user-service**: Manages user accounts, authentication, and authorization.
+5. **aioj-backend-question-service**: Manages programming problems and test cases.
+6. **aioj-backend-ai-service**: Provides AI-assisted features such as code analysis and problem-solving.
+7. **aioj-backend-auth**: Manages authentication and token issuance.
+8. **aioj-backend-upms**: User Management System for administrative operations.
+
+## Database
+
+The system uses SQL databases. Database scripts can be found in the `db/` directory.
+
+## Build System
+
+The project uses Maven for build and dependency management.
+
+### Common Commands:
+
+- Compile the entire project:
+  ```bash
+  mvn clean compile
+  ```
+
+- Compile a specific module:
+  ```bash
+  mvn clean compile -pl <module-name>
+  ```
+
+- Package the entire project:
+  ```bash
+  mvn clean package
+  ```
+
+- Package a specific module:
+  ```bash
+  mvn clean package -pl <module-name>
+  ```
+
+## Development
+
+### Environment Profiles
+
+The project supports different environments (dev, test, prod) with corresponding configuration files:
+
+- Development: application-dev.yml
+- Test: application-test.yml
+- Production: application-prod.yml
+
+### Running a Service
+
+To run a specific microservice, use the Spring Boot Maven plugin:
+
+```bash
+cd <module-name>
+mvn spring-boot:run
+```
+
+Or run the built JAR file:
+
+```bash
+cd <module-name>/target
+java -jar <module-name>-<version>.jar
+```
+
+## Technologies Used
+
+- **Java 17**: Programming language
+- **Spring Boot 3.5.7**: Framework for building microservices
+- **Spring Cloud Alibaba 2025.0.0.0**: Microservices ecosystem
+- **Maven**: Build tool
+- **Lombok**: Java library to reduce boilerplate code