chore: establish project baseline

tests/test_erp_field_map_artifact.py

@@ -0,0 +1,26 @@
+import json
+from pathlib import Path
+
+import pytest
+
+DOCS = Path(__file__).resolve().parents[1] / "docs"
+FMAP = DOCS / "ERP_FISCAL_FIELD_MAP_V1.json"
+pytestmark = pytest.mark.skipif(not FMAP.exists(), reason="field map artifact not generated")
+
+WRITABLE = {"IPI", "EX_TIPI", "CEST"}
+
+
+def test_only_proven_product_fields_are_write_candidates():
+    fields = json.loads(FMAP.read_text(encoding="utf-8"))["fields"]
+    for f in fields:
+        if f["write_candidate"]:
+            assert f["table"] == "C000025" and f["field"] in WRITABLE and f["confidence"] == "HIGH"
+        if f["usage_class"] in ("LEGACY_UNUSED", "UNKNOWN") or f["confidence"] == "LOW":
+            assert not f["write_candidate"]
+
+
+def test_every_context_input_has_a_known_status():
+    doc = json.loads((DOCS / "FISCAL_CONTEXT_REQUIREMENTS_V1.json").read_text(encoding="utf-8"))
+    allowed = {"AVAILABLE_FROM_ERP", "AVAILABLE_FROM_AGENT_CONFIG", "AVAILABLE_FROM_JOB", "MISSING"}
+    for dom in doc["domains"].values():
+        assert {i["status"] for i in dom["inputs"].values()} <= allowed