thirdparty-emil-design-eng git:20260820.950107cA

Immutable. This exact content never changes and is served at /api/v1/blob/e9af7687f0a9e18c.

---
name: thirdparty-emil-design-eng
description: >
  Third-party skill — Emil Kowalski's design-engineering notes (animation craft,
  Sonner-style components). Use when the user names emil-design-eng or asks for
  that philosophy. Generic UI build → enhance-web-ui. Motion pass →
  enhance-motion.
---

# Design Engineering

> **Third-party skill** (upstream-maintained). See [ATTRIBUTION.md](ATTRIBUTION.md).
> Upstream: [emilkowalski/skills](https://github.com/emilkowalski/skills) · Local name: `thirdparty-emil-design-eng`

Before responding, read
[`references/emil-design-eng.md`](references/emil-design-eng.md) **in full**
and follow it as the authoritative playbook. It contains the required initial
response, review format, animation guidance, accessibility rules, and checklist.

The upstream body is kept in that single canonical reference file so future
syncs remain diff-able without loading 600+ lines into the routing surface.
Only local attribution links are adjusted for the reference location.