# Xingkong Flagship Cosmic Platform Note

Xingkong Flagship is a Cosmic-family product. Load Cosmic platform knowledge first, then apply flagship-specific project knowledge.

## Default Stack

- Platform: Cosmic.
- Language: Java.
- Main concerns: plugin lifecycle, metadata verification, SDK signature verification, transaction boundaries, performance review.

## Harness Rules

- Do not route Xingkong Flagship to enterprise C# rules.
- Do not treat `flagship` as a non-Cosmic Java BOS stack unless the project explicitly proves it is a legacy product outside Xingkong Flagship.
- Use Cosmic plugin and KSQL rules for new development.