fix(scripts): ignore reference images in direct tests

scripts/run_aoixx_direct_test.sh

@@ -35,4 +35,18 @@ export IMAGE_MAX_POLL_WAIT="${IMAGE_MAX_POLL_WAIT:-1800}"
 export IMAGE_INITIAL_POLL_DELAY="${IMAGE_INITIAL_POLL_DELAY:-10}"
 export IMAGE_POLL_INTERVAL="${IMAGE_POLL_INTERVAL:-5}"
 
+# Direct generation tests should ignore any edit inputs coming from .env.
+for name in \
+  REFERENCE_IMAGE \
+  REFERENCE_IMAGE_FILE \
+  REFERENCE_IMAGE_URL \
+  REFERENCE_IMAGE_DATA_URL \
+  MASK_IMAGE \
+  MASK_IMAGE_FILE \
+  MASK_IMAGE_URL \
+  MASK_IMAGE_DATA_URL
+do
+  export "$name="
+done
+
 python3 gpt_image2_generate.py "$@"