Product design
Product design docs define what Cabin is for and which features earn a place — before architecture and component contracts say how to build them.
Engineering principles live in principles. Compliance mechanics live in compliance. This section is the product filter those layers serve.
Documents
| Document | Description |
|---|---|
| Stance | Calm, legible, inevitable cabin HMI — clarity, restraint, craft |
| Pillars | Five gates every feature must pass |
| Features | Layered feature plan (Foundations → System → Core → Patterns → Craft) |
How to use this section
- Read stance for the product posture.
- Run proposals through pillars.
- Place work in the feature layers and respect v1 non-goals.
- Sequence delivery with the roadmap.