refactor(logging): split config + subsystem imports

src/gateway/server/plugins-http.ts

@@ -1,6 +1,6 @@
 import type { IncomingMessage, ServerResponse } from "node:http";
 
-import type { createSubsystemLogger } from "../../logging.js";
+import type { createSubsystemLogger } from "../../logging/subsystem.js";
 import type { PluginRegistry } from "../../plugins/registry.js";
 
 type SubsystemLogger = ReturnType<typeof createSubsystemLogger>;