网站建设需要：Snapshot 设计的有关材料以及用途、原理等说明

### Which kiwi functionalities are relevant/related to the feature request?

_No response_

### Description

_No response_

### Proposed solution

_No response_

### Alternatives considered

_No response_

The issue names no files, tests, or entry points, and its description and proposed solution are empty. First clarify which Snapshot materials are needed and where they should be published; done means the Snapshot design, purpose, and principles are documented in an agreed project location.

Written by the indexing model from the issue text.