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 # phast
 
-Phast control plane: Python + Prefab + MCP
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+Canonical source of truth for Phast.
+
+- `phast.app` is the public product surface.
+- `my.phast.app` is the owner/control surface.
+- This repository owns Phast product source and web assets.
+- Phast does not own a standalone Fly app and must not be embedded in the Boring runtime.
+- Public web bytes are served from the Teahub Gitea/Pages machine, following the same source-owned pattern as `matcha/persimmons`.
+
+The Python control-plane source is retained here as product source. Live backend publication is a separate concern from static site publication and must not silently couple Phast back into Boring.