fix(audit): reuse session connection when checking audit_logs table

Inspecting the engine directly opens a second connection, which under
SQLite can contend with a write lock held by the current flush and
cause spurious failures during tests. Bind the inspector to the
session's existing connection when available and fall back to the
engine otherwise.

app/utils/audit.py

@@ -433,8 +433,13 @@ def check_audit_table_exists(force_check=False):
         return _audit_table_exists
 
     try:
-        # Try to check if the table exists
-        inspector = sqlalchemy_inspect(db.engine)
+        # Prefer the current session connection so SQLite tests do not open a
+        # second connection while a flush is acquiring a write lock.
+        try:
+            bind = db.session.connection()
+        except Exception:
+            bind = db.engine
+        inspector = sqlalchemy_inspect(bind)
         tables = inspector.get_table_names()
         exists = "audit_logs" in tables
         _audit_table_exists = exists