macOS app: force native arm64 uvicorn on Apple Silicon

build-macos-app.sh

@@ -119,7 +119,11 @@ fi
 
 notify "Starting…"
 cd "$INSTALL_DIR" || die_gui "Install folder not found: $INSTALL_DIR"
-"$UVICORN" app:app --host 127.0.0.1 --port "$PORT" >>"$LOG" 2>&1 &
+if [ "$(uname -m)" = "arm64" ]; then
+  arch -arm64 "$UVICORN" app:app --host 127.0.0.1 --port "$PORT" >>"$LOG" 2>&1 &
+else
+  "$UVICORN" app:app --host 127.0.0.1 --port "$PORT" >>"$LOG" 2>&1 &
+fi
 SERVER_PID=$!
 
 # Quitting the app stops the server it started.