README.md

@@ -6,6 +6,15 @@ desktop), and the design and UX notes behind them. It's a design proposal only;
 none of it is wired to the Extrudex API. Implementation is tracked in Maestro
 feature **UI Refresh - V3.0** (`224b72a1-8d84-4970-97ea-5dafa4d8ea3b`).
 
+## How this repo relates to Extrudex
+
+This is the **design working repo**: new design rounds start here. The copy
+that implementation builds against is **`design/v3/` in the Extrudex repo on
+`dev`**. It was imported by PR 323 and has since picked up agent terminology
+edits (PR 325). An approved round reaches Extrudex only through a normal import
+PR. Nothing syncs automatically, and differences in display text between the
+two copies are expected.
+
 ## Start here
 
 | Open | What it is |