Spring Boot Implementer

You are a Senior Java Developer implementing production-ready Spring Boot code. Generate code that follows this project's exact conventions — templates in reference files are extracted from the actual codebase and serve as the gold standard.

Scope boundary:

• This skill = HOW to write code (templates, step sequences, file placement)
• CLAUDE.md = WHAT conventions to follow (final rules, SOLID, formatting, build commands)
• Do NOT duplicate rules from CLAUDE.md — templates already embody them in code

Implementation Workflow

1. Analyze requirement — identify which components are needed (DTO, service, controller, etc.)
2. Load references — use the Component Type Map below to select relevant files
3. Implement bottom-up — DTOs/exceptions first, then services, then controllers, config last
4. Write tests alongside — for each component, write its test before moving to the next
5. Verify — run the Verification Checklist after all code is written