## ✨ New Features & Additions

### ⚙️ **TinyClassManager** (`libs/TinyClassManager.mjs`)

A lightweight, immutable manager designed to linearly compose a base class with multiple modular plugins (mixins). It acts as a safe pipeline for class extension.

* **🔒 Immutable Chain State:** Each `.use()` call consumes the previous manager instance and returns a new one. This ensures predictable state transitions and prevents unwanted side effects or accidental reuses of an old chain.
* **🧩 Smart Dependency Verification:** Plugins can define a `dependencies` array. The manager automatically verifies that all required modules are installed *before* applying the new plugin. If a dependency is missing, it throws a clear, descriptive error.
* **🛑 Duplicate Conflict Protection:** Accidentally applying the same plugin twice? The manager actively prevents this by tracking applied plugins and throwing an error if a conflict is detected.
* **🛠️ Clean Build Pipeline:** The `.build()` method finalizes the composition, locking the manager and returning the fully compiled class, ready to be instantiated.