designing-hardware-products
Installation
SKILL.md
Designing Hardware Products
判断先于执行：决定「是否做 / 选什么 / 如何取舍」（栈、方案、架构、权衡）前，先读领域判断内核
skills/_kernel/hardware/SKILL.md——它管 judgment，本秘典管 execution；冲突时以内核判断为准。
From empty directory to shippable product. Requirements in, Gerber + .bin + .apk out.
When to use
| Scenario | Use | Why |
|---|---|---|
| New IoT / embedded product from scratch | Yes | Full pipeline |
| Adding BLE app to existing hardware | Partial | Phase 4 only |
| PCB redesign with existing firmware | Partial | Phase 3 only |
| One-off breadboard prototype | No | Overkill, just wire it |