Chiusura fase di ristrutturazione e modularizzazione del workflow per favorire sviluppo modulare

harness/tests/test_mschema_render.py

@@ -3,7 +3,7 @@
 Catches port breaks in the render layer (markdown reviewer report, mschema-text
 ThothAI style, schema-dict for AV-SQL). Pure logic, no I/O.
 """
-from datetime import datetime
+from datetime import UTC, datetime
 
 from tht.mschema.models import (
     Annotations,
@@ -20,7 +20,7 @@ def _fake_schema() -> PhysicalSchema:
     return PhysicalSchema(
         database="testdb",
         schema="dw",
-        introspected_at=datetime(2025, 1, 1, 0, 0, 0),
+        introspected_at=datetime(2025, 1, 1, 0, 0, 0, tzinfo=UTC),
         tables={
             "dim_pazienti": TablePhysical(
                 comment="Anagrafica pazienti",