style(db): reorder imports alphabetically

Reorder imports in db/__init__.py to follow standard alphabetical
ordering. Auto-fixed by ruff linter.

Author: Sakeeb91

db/__init__.py

@@ -29,21 +29,21 @@
     await close_database()
 """
 
-from db.connection import DatabaseManager, get_database, close_database
+from db.connection import DatabaseManager, close_database, get_database
+from db.executor import (
+    QueryResult,
+    QueryValidator,
+    SafeQueryExecutor,
+    sanitize_identifier,
+)
 from db.schema import (
+    ColumnInfo,
+    ForeignKeyInfo,
     SchemaInfo,
     SchemaIntrospector,
     TableInfo,
-    ColumnInfo,
-    ForeignKeyInfo,
     get_sample_data,
 )
-from db.executor import (
-    SafeQueryExecutor,
-    QueryResult,
-    QueryValidator,
-    sanitize_identifier,
-)
 
 __all__ = [
     # Connection management