feat(protocol): extend KNOWN_FEATURES with temporal feature names

tests/unit/test_protocol_validator.py

@@ -151,3 +151,33 @@ def test_feature_unknown_column_fails() -> None:
     ast = parse_strategy(src)
     with pytest.raises(ValidationError, match="unknown feature"):
         validate_strategy(ast)
+
+
+def test_validator_accepts_temporal_features() -> None:
+    for name in ("hour", "dow", "is_weekend", "minute_of_hour"):
+        src = _wrap(
+            {
+                "op": "gt",
+                "args": [
+                    {"kind": "feature", "name": name},
+                    {"kind": "literal", "value": 0},
+                ],
+            }
+        )
+        ast = parse_strategy(src)
+        validate_strategy(ast)  # no exception
+
+
+def test_validator_rejects_temporal_typo() -> None:
+    src = _wrap(
+        {
+            "op": "gt",
+            "args": [
+                {"kind": "feature", "name": "weekday"},
+                {"kind": "literal", "value": 0},
+            ],
+        }
+    )
+    ast = parse_strategy(src)
+    with pytest.raises(ValidationError, match="unknown feature"):
+        validate_strategy(ast)