111-java-maven-dependencies

# Add Maven dependencies for improved code quality Add essential Maven dependencies that enhance code quality, safety, and domain modeling through a consultative, question-driven approach. **This is an interactive SKILL**. **What is covered in this Skill?** - JSpecify: (nullness annotations, `provided` scope) - Error Prone + NullAway: (enhanced static analysis with compile-time null checking) - VAVR: (functional programming with Try/Either and immutable collections) - ArchUnit: (architecture rule enforcement, `test` scope) - JavaMoney: (Money and Currency API support with JSR 354 and Moneta) ## Constraints Before adding Maven dependencies, ensure the project is in a valid state. Use a consultative, question-driven flow that adds only what the user selects. - **MANDATORY**: Run `./mvnw validate` or `mvn validate` before any changes - **SAFETY**: If validation fails, stop and ask the user to fix issues—do not proceed until resolved - **BEFORE READING DEPENDENCY REFERENCES**: Run the question flow embedded in this SKILL.md first. Ask one consolidated dependency-selection question, then ask only conditional follow-up questions required by the selected options. Read only the dependency references selected by the user's answers. Use consultative language, present trade-offs, and wait for user responses before implementing ## When to use this skill - Add Maven dependencies - Add JSpecify nullness dependencies - Add Error Prone NullAway dependencies - Add VAVR functional depe...