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

harness/tests/test_schema_introspect_guard.py

@@ -1,16 +1,16 @@
-from datetime import datetime
+from datetime import UTC, datetime
 
 from typer.testing import CliRunner
 
 from tht.cli import app
-from tht.mschema.models import ColumnPhysical, PhysicalSchema, TablePhysical
-from tht.config import ExamplesConfig
 from tht.cli.schema_cmd import _add_examples
+from tht.config import ExamplesConfig
+from tht.mschema.models import ColumnPhysical, PhysicalSchema, TablePhysical
 
 
 def _write_catalog(tmp_path):
     phys = PhysicalSchema(
-        database="d", schema="s", introspected_at=datetime(2026, 1, 1),
+        database="d", schema="s", introspected_at=datetime(2026, 1, 1, tzinfo=UTC),
         tables={
             "dim_patient": TablePhysical(
                 comment="Anagrafica",
@@ -48,7 +48,7 @@ def test_introspect_fresh_root_initializes_through_writer_job(tmp_path, monkeypa
 
     cfg = _write_config(tmp_path)
     physical = PhysicalSchema(
-        database="d", schema="s", introspected_at=datetime(2026, 1, 1),
+        database="d", schema="s", introspected_at=datetime(2026, 1, 1, tzinfo=UTC),
         tables={"dim_patient": TablePhysical(columns={"id": ColumnPhysical(type="bigint")})},
     )
 
@@ -90,7 +90,7 @@ def test_render_without_catalog_guides_fallback(tmp_path):
 
 def test_examples_skip_one_unreadable_column_and_continue(caplog):
     physical = PhysicalSchema(
-        database="d", schema="s", introspected_at=datetime(2026, 1, 1),
+        database="d", schema="s", introspected_at=datetime(2026, 1, 1, tzinfo=UTC),
         tables={"t": TablePhysical(columns={
             "bad": ColumnPhysical(type="text"), "good": ColumnPhysical(type="text")
         })},