fix: normalize reproducible Planegcs artifacts

native/planegcs/build.sh

@@ -44,6 +44,11 @@ em++ \
   -sNO_EXIT_RUNTIME=1 \
   -o "${DIST_DIR}/freecad-planegcs.js"
 
+# Emscripten output contains a version-sensitive trailing-space-only line.
+# Normalize it before copying and hashing so native and public artifacts stay
+# byte-identical across a clean rebuild.
+perl -pi -e 's/[ \t]+$//' "${DIST_DIR}/freecad-planegcs.js"
+
 cp "${ROOT_DIR}/native/planegcs/package.json" "${DIST_DIR}/package.json"
 cp "${DIST_DIR}/freecad-planegcs.js" "${PUBLIC_DIR}/freecad-planegcs.js"
 cp "${DIST_DIR}/freecad-planegcs.wasm" "${PUBLIC_DIR}/freecad-planegcs.wasm"