Enhance JavaParser Power with Kiro Hooks

[verhasi]

Goal

Add Kiro hooks to automate mechanical compliance steps that currently rely on AI memory via steering files.

Rationale

JavaParser has a self-referential build where modifying generator source requires running generators before building. Currently the steering files tell the AI to remind the developer. Hooks make this deterministic and zero-context-cost.

Planned Hooks

1. Run Code Generators on Generator Source Change

• Trigger: File changed in javaparser-core-generators/src/**/*.java
• Action: ./run_core_generators.sh
• Post-check: git diff --exit-code — notify if generated files changed

2. Rebuild Metamodel on AST Node Change

• Trigger: File changed in javaparser-core/src/main/java/com/github/javaparser/ast/**/*.java
• Action: ./run_core_metamodel_generator.sh && ./run_core_generators.sh
• Post-check: git diff --exit-code

3. Verify Pre-PR Compliance

• Trigger: User-triggered (before PR submission)
• Action: Run generators + checkstyle + verify empty diff

Design Principle

• Hooks handle mechanical steps that should never be skipped
• Steering handles judgment and reasoning that need intelligence

Tasks

• Research Kiro hooks documentation for exact trigger syntax
• Implement hooks in javaparser-contributor/hooks/
• Test locally with file change triggers
• Update POWER.md onboarding section to install hooks
• Update steering files to reference hooks instead of manual reminders