# AyCode.Utils

Low-level utility library with zero project dependencies. Provides string/datetime extensions, and disposable lock wrappers for `using` pattern with `Mutex`/`SemaphoreSlim`.

## Folder Structure

| Folder | Purpose |
|---|---|
| [`Extensions/`](Extensions/README.md) | String, DateTime, and lock extension methods |
| [`Wrappers/`](Wrappers/README.md) | Disposable wrappers for Mutex and SemaphoreSlim |

## Dependencies

| Dependency | Purpose |
|---|---|
| `JetBrains.Annotations` | `[ContractAnnotation]` for nullability hints |
| `Microsoft.AspNetCore.Cryptography.KeyDerivation` | Key derivation (available to dependents) |

---

> **LLM Maintenance:** If you modify code in this folder, update this README to reflect the changes. If you notice the README content does not match the current code, automatically update the README to match the code.