Jun 28 - Code optimize - Fix Critical/High issues

app/models/tenant_settings.py

@@ -7,6 +7,8 @@ One row per tenant DB. Created on first save; reads fall back to defaults
 when no row exists so tenant-zero needs zero data migration.
 """
 
+import sqlalchemy.exc
+
 from app import db
 from app.utils.time_utils import now_eastern
 
@@ -44,9 +46,9 @@ class TenantSettings(db.Model):
         """
         try:
             row = cls.query.first()
-        except Exception:
-            # ProgrammingError: Table 'tenant_settings' doesn't exist
-            # (phase33 migration not yet applied to this tenant DB)
+        except (sqlalchemy.exc.ProgrammingError, sqlalchemy.exc.OperationalError):
+            # Table 'tenant_settings' doesn't exist — phase33 migration not yet applied.
+            # Any other DB error (connection failure, permission error) is re-raised.
             return None
         if row is not None:
             return row