Trying to fix some build errors with regression tests, but this is failing

templates/basic/upload.bat

@@ -204,6 +204,12 @@ for %%d in (lib\hal lib\app) do (
         set "BUILD_FLAGS=!BUILD_FLAGS! -I%SCRIPT_DIR%\%%d"
     )
 )
+:: Auto-discover driver libraries (added by: anvil add <driver>)
+if exist "%SCRIPT_DIR%\lib\drivers" (
+    for /d %%d in ("%SCRIPT_DIR%\lib\drivers\*") do (
+        set "BUILD_FLAGS=!BUILD_FLAGS! -I%%d"
+    )
+)
 set "BUILD_FLAGS=!BUILD_FLAGS! -Werror"
 
 :: -- Compile --------------------------------------------------------------