Implement canon conformance and maintenance optimizations

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a06e82-3e08-7042-a79d-438ac6eed8db

tests/test_emission_cadence.py

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+from copy import deepcopy
+
+from jsonschema import Draft202012Validator
+import yaml
+
+from info_tech_canon.service import DEFAULT_INFOSPACE_ROOT
+
+
+SCHEMA_PATH = DEFAULT_INFOSPACE_ROOT / "schemas" / "emission-cadence.schema.yaml"
+EXAMPLE_PATH = (
+    DEFAULT_INFOSPACE_ROOT
+    / "standards"
+    / "emission-cadence"
+    / "examples"
+    / "qonto-assistant.yaml"
+)
+
+
+def _load_yaml(path):
+    return yaml.safe_load(path.read_text(encoding="utf-8"))
+
+
+def _validator() -> Draft202012Validator:
+    schema = _load_yaml(SCHEMA_PATH)
+    Draft202012Validator.check_schema(schema)
+    return Draft202012Validator(schema)
+
+
+def test_worked_example_validates() -> None:
+    assert list(_validator().iter_errors(_load_yaml(EXAMPLE_PATH))) == []
+
+
+def test_expected_rate_requires_one_window_representation() -> None:
+    payload = deepcopy(_load_yaml(EXAMPLE_PATH))
+    rate = payload["sources"][0]
+    rate.pop("window")
+
+    assert list(_validator().iter_errors(payload))
+
+    rate["window"] = "PT24H"
+    rate["window_seconds"] = 86400
+    assert list(_validator().iter_errors(payload))
+
+
+def test_heartbeat_form_accepts_either_mechanism_but_not_neither() -> None:
+    payload = deepcopy(_load_yaml(EXAMPLE_PATH))
+    intermittent = payload["sources"][1]
+    intermittent.pop("heartbeat")
+    assert list(_validator().iter_errors(payload)) == []
+
+    intermittent.pop("reconciliation")
+    assert list(_validator().iter_errors(payload))
+
+
+def test_profile_fields_must_be_namespaced_extensions() -> None:
+    payload = deepcopy(_load_yaml(EXAMPLE_PATH))
+    payload["sources"][1]["evidence_class"] = "load-bearing"
+
+    assert list(_validator().iter_errors(payload))