loopd: ask_memory as a core tool, and a wait of its own on brokerd

Co-Authored-By: ornith-1.5-35b-a3b <agent@wntrmute.dev>

crates/loopd/src/main.rs

@@ -134,7 +134,7 @@ fn run_serve(path: &Path) -> ExitCode {
     eprintln!("loopd: serving on {}", socket.display());
 
     let memory = Box::new(MemoryPort::new(cfg.memory_socket(), MEMORY_WAIT));
-    let ctx = Arc::new(Context::new(cfg, client, port, Registry::m5a(), memory));
+    let ctx = Arc::new(Context::new(cfg, client, port, Registry::m5c(), memory));
     if let Err(e) = channel::serve(listener, ctx) {
         eprintln!("loopd: the channel server stopped: {e}");
         return ExitCode::from(1);