fix: copy constitutions to site-packages path for SafetyFilter

Dockerfile

@@ -38,8 +38,11 @@ RUN useradd -m -u 1000 user
 COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
 COPY --from=builder /usr/local/bin /usr/local/bin
 
-# Copy the constitutions directory (needed by SafetyFilter at runtime)
-COPY --from=builder /build/dataforge_src/constitutions /home/user/app/constitutions
+# Copy constitutions to where default_constitution_path() expects them:
+# Path(__file__).resolve().parents[2] / "constitutions" / "default.yaml"
+# __file__ = /usr/local/lib/python3.12/site-packages/dataforge/safety/constitution.py
+# parents[2] = /usr/local/lib/python3.12/site-packages/
+COPY --from=builder /build/dataforge_src/constitutions /usr/local/lib/python3.12/site-packages/constitutions
 
 # Copy application code
 COPY playground/api/app.py /home/user/app/app.py