feat(agent): implement agent execution engine and turn handling with background processing

apps/infrastructure/src/ipc/server.rs

@@ -21,6 +21,6 @@ impl IpcServer {
 
     pub fn accept(&self) -> anyhow::Result<crate::ipc::conn::Connection> {
         let (stream, _addr) = self.listener.accept()?;
-        Ok(crate::ipc::conn::Connection::new(stream))
+        crate::ipc::conn::Connection::new(stream)
     }
 }