Code Modularizer - Tier 2

Tier 2 Skill: Break monolithic code into clean modules

What is Code Modularization?

Take a big, messy file and split it into clean, focused modules.

BEFORE: MONOLITH (1,500 lines)
  app.js
    ├─ auth()
    ├─ database()
    ├─ api_routes()
    ├─ validation()
    ├─ logging()
    └─ utils()
  (Too many things in one place!)