feat(sidebar): wildcard patterns for visible databases

Closes #7164

crates/dbx-core/src/agent_tools.rs

@@ -1367,6 +1367,7 @@ for line in sys.stdin:
             database: Some(database.to_string()),
             default_schema: None,
             visible_databases: None,
+            visible_database_patterns: None,
             visible_schemas: None,
             show_system_schemas: false,
             attached_databases: Vec::new(),