fix: silence @clickhouse/client internal stderr logger to prevent TUI corruption

The @clickhouse/client package enables ERROR-level logging by default and writes
`[ERROR][@clickhouse/client][Connection]` lines directly to stderr on auth/query
failures. These raw writes corrupt the terminal TUI rendering.

Set `log: { level: 127 }` (ClickHouseLogLevel.OFF) when creating the client —
consistent with how Snowflake (`logLevel: 'OFF'`) and Databricks (no-op logger)
already suppress their SDK loggers for the same reason.

Author: suryaiyer95

packages/drivers/src/clickhouse.ts

@@ -57,6 +57,9 @@ export async function connect(config: ConnectionConfig): Promise<Connector> {
         clientConfig.clickhouse_settings = config.clickhouse_settings
       }
 
+      // Silence the client's internal stderr logger — its ERROR-level output
+      // writes raw lines directly to stderr and corrupts terminal TUI rendering.
+      clientConfig.log = { level: 127 } // ClickHouseLogLevel.OFF = 127
       client = createClient(clientConfig)
     },