Check if mod exists to prevent empty query aggregates

jarvis_core/db/__init__.py

@@ -39,6 +39,7 @@ def q(**kwargs: dict) -> dict:
             v = ObjectId(v)
         elif "__" in k:
             k, mod, *_ = k.split("__")
+            if mod:
                 v = {f"${mod}": v}
         query[k] = v
     return query

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "jarvis-core"
-version = "0.1.1"
+version = "0.1.2"
 description = ""
 authors = ["Your Name <you@example.com>"]