fix(d2): datetime.now(UTC) everywhere + SQLITE-001 automation tests on ephemeral postgres

app/core/worker.py

@@ -346,7 +346,7 @@ async def cleanup_audit_log_job(ctx: dict[str, Any]) -> None:
     Iterates per-tenant for RLS compliance.
     """
     from sqlalchemy import text as sa_text, delete as sa_delete
-    from datetime import datetime, timedelta
+    from datetime import UTC, datetime, timedelta
 
     from app.core.db import get_worker_session_factory
     from app.models.audit import AuditLog
@@ -357,7 +357,7 @@ async def cleanup_audit_log_job(ctx: dict[str, Any]) -> None:
             tenant_result = await db.execute(sa_text("SELECT id FROM tenants"))
             tenant_ids = [row[0] for row in tenant_result]
 
-            cutoff = datetime.utcnow() - timedelta(days=365)
+            cutoff = datetime.now(UTC) - timedelta(days=365)
             total_deleted = 0
             for tenant_id in tenant_ids:
                 await db.execute(
@@ -389,7 +389,7 @@ async def cleanup_trash_job(ctx: dict[str, Any]) -> None:
     Default retention: 90 days in trash before permanent deletion.
     """
     from sqlalchemy import text as sa_text, delete as sa_delete
-    from datetime import datetime, timedelta
+    from datetime import UTC, datetime, timedelta
 
     from app.core.db import get_worker_session_factory
     from app.models.contact import Contact
@@ -401,7 +401,7 @@ async def cleanup_trash_job(ctx: dict[str, Any]) -> None:
             tenant_result = await db.execute(sa_text("SELECT id FROM tenants"))
             tenant_ids = [row[0] for row in tenant_result]
 
-            cutoff = datetime.utcnow() - timedelta(days=90)
+            cutoff = datetime.now(UTC) - timedelta(days=90)
             total_deleted = 0
 
             for tenant_id in tenant_ids: