# Quickstart: Add Knip Unused Code Detection

**Date**: 2026-03-05

## What This Feature Does

Adds Knip to the project to detect unused files, exports, dependencies, devDependencies, and types across the pnpm workspace. Enforces it as part of the `pnpm check` quality gate (which runs on every commit via Lefthook).

## Files Changed

| File | Change |
|------|--------|
| `package.json` | Add `knip` devDependency; add `knip` script; update `check` script |
| `knip.json` (new) | Workspace-aware Knip configuration |

## How to Use

```bash
# Run unused-code check standalone
pnpm knip

# Run full quality gate (now includes Knip)
pnpm check
```

## Verification

1. `pnpm check` passes on the current codebase (no false positives).
2. Add an unused export to any file → `pnpm knip` reports it → `pnpm check` fails.