refactor(entrypoint): move route registry into entrypoint context (#200)

- Introduced `NewTestRoute` function to simplify route creation in benchmark tests.
- Replaced direct route validation and starting with error handling using `require.NoError`.
- Updated server retrieval to use `common.ProxyHTTPAddr` for consistency.
- Improved logging for HTTP route addition errors in `AddRoute` method.

* fix(tcp): wrap proxy proto listener before acl

* refactor(entrypoint): propagate errors from route registration and stream serving

* fix(docs): correct swagger and package README

agent/cmd/main.go

@@ -158,10 +158,15 @@ Tips:
 			},
 			ErrorLog: stdlog.New(&errLog, "", 0),
 		}
-		srv.Serve(l)
+		go func() {
+			err := srv.Serve(l)
+			if err != nil && !errors.Is(err, http.ErrServerClosed) {
+				log.Error().Err(err).Msg("socket proxy server stopped with error")
+			}
+		}()
 	}
 
-	systeminfo.Poller.Start()
+	systeminfo.Poller.Start(t)
 
 	task.WaitExit(3)
 }