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@@ -6,6 +6,10 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Write all git commit messages in Italian.
 
+## Scope of Work
+
+**Modifica solo il modulo `fdm/`.** Ignora qualsiasi richiesta riguardante PINN (`model.py`, `engine.py`, `visualizer.py`, `app.py` radice). Se una richiesta coinvolge file PINN, avvisa l'utente e non apportare modifiche.
+
 ## Project Overview
 
 **Heat Equation PINN** — A Physics-Informed Neural Network that solves the 1D time-varying heat equation with an internal point heat source: