revamped entire validation helper script

Author: Mesh-ach

src/webapp/routers/data.py

@@ -1093,7 +1093,7 @@ def validation_helper(
     now = time.monotonic()
     base_cache = STATE._base_cache
     if now < base_cache["exp"] and base_cache["val"] is not None:
-        base_schema_id, base_schema = base_cache["val"]  # pylint: disable=unpacking-non-sequence  # pylint: disable=unpacking-non-sequence
+        base_schema_id, base_schema = base_cache["val"]  # pylint: disable=unpacking-non-sequence # fmt: skip
     else:
         row = sess.execute(
             select(SchemaRegistryTable.schema_id, SchemaRegistryTable.json_doc)