Fix datetime field handling in NUMERIC queries

This addresses the datetime field indexing issue by converting datetime and date objects to timestamps in NUMERIC query expressions. This ensures proper query functionality when searching on datetime fields that are indexed as NUMERIC fields.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: abrookins

aredis_om/model/model.py

@@ -1301,6 +1301,15 @@ def resolve_value(
                     f"Docs: {ERRORS_URL}#E5"
                 )
         elif field_type is RediSearchFieldTypes.NUMERIC:
+            # Convert datetime objects to timestamps for NUMERIC queries
+            if isinstance(value, (datetime.datetime, datetime.date)):
+                if isinstance(value, datetime.date) and not isinstance(
+                    value, datetime.datetime
+                ):
+                    # Convert date to datetime at midnight
+                    value = datetime.datetime.combine(value, datetime.time.min)
+                value = value.timestamp()
+
             if op is Operators.EQ:
                 result += f"@{field_name}:[{value} {value}]"
             elif op is Operators.NE: