Fix dynamic memoir image limits

api/services/memoir_images/parser.py

@@ -23,7 +23,7 @@ def parse_image_placeholders(content: str, max_images: int) -> list[dict[str, An
                 "start_offset": match.start(),
             }
         )
-        if len(items) >= max_images:
+        if max_images is not None and len(items) >= max_images:
             break
     return items