Python Architecture Skill

When to activate

• Creating new Python modules or packages under

  src/apm_cli/

• Refactoring class hierarchies or introducing base classes
• Changes that touch 3+ files with shared logic patterns
• Introducing new design patterns (Strategy, Observer, etc.)
• Cross-cutting concerns (logging, auth, error handling)
• Performance-sensitive paths (parallel downloads, large manifests)

Key rules

• Follow existing patterns (BaseIntegrator, CommandLogger, AuthResolver) before inventing new ones
• Prefer composition over deep inheritance
• Push shared logic into base classes, not duplicated across siblings