fix: close stream adaptive gaps and switch notify to stario v0.1.1

- make stream fast path honor adaptive soft payload limits end-to-end
  - split oversized fast-stream payloads into sequential frames before batching
  - use adaptive soft cap when encoding stream batch payloads
  - move timeout-like error detection into production code for adaptive tx
  - tune notify FrameReader read size explicitly to avoid throughput regression
  - drop local stario replace and depend on released b612.me/stario v0.1.1

signal_benchmark_test.go

@@ -76,7 +76,7 @@ func startSignalRoundTripServerForBenchmark(b *testing.B) (*ServerCommon, string
 	server.SetLink("signal-roundtrip", func(msg *Message) {
 		_ = msg.Reply([]byte("ack:" + string(msg.Value)))
 	})
-	if err := server.Listen("tcp", "127.0.0.1:0"); err != nil {
+	if err := server.Listen("tcp", benchmarkTCPListenAddr(b)); err != nil {
 		if benchmarkListenPermissionDenied(err) {
 			b.Skipf("tcp benchmark requires local listen permission: %v", err)
 		}
@@ -102,7 +102,7 @@ func newSignalRoundTripBenchmarkClient(b *testing.B, addr string) *ClientCommon
 	if err := UseModernPSKClient(client, integrationSharedSecret, integrationModernPSKOptions()); err != nil {
 		b.Fatalf("UseModernPSKClient failed: %v", err)
 	}
-	if err := client.Connect("tcp", addr); err != nil {
+	if err := client.Connect("tcp", benchmarkTCPDialAddr(b, addr)); err != nil {
 		b.Fatalf("client Connect failed: %v", err)
 	}
 	return client