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

diagnostics_snapshot.go

@@ -59,6 +59,11 @@ type DiagnosticsSummary struct {
 	LogicalCount          int
 	CurrentTransportCount int
 
+	BulkAttachAttempts int64
+	BulkAttachRetries  int64
+	BulkAttachSuccess  int64
+	BulkAutoFallbacks  int64
+
 	StreamCount       int
 	ActiveStreamCount int
 	StaleStreamCount  int
@@ -236,7 +241,11 @@ func serverCurrentTransportRuntimeSnapshots(s Server) ([]TransportConnRuntimeSna
 
 func summarizeClientDiagnosticsSnapshot(snapshot ClientDiagnosticsSnapshot) DiagnosticsSummary {
 	summary := DiagnosticsSummary{
-		LogicalCount: diagnosticsLogicalCountFromClientRuntime(snapshot.Runtime),
+		LogicalCount:       diagnosticsLogicalCountFromClientRuntime(snapshot.Runtime),
+		BulkAttachAttempts: snapshot.Runtime.BulkAttachAttempts,
+		BulkAttachRetries:  snapshot.Runtime.BulkAttachRetries,
+		BulkAttachSuccess:  snapshot.Runtime.BulkAttachSuccess,
+		BulkAutoFallbacks:  snapshot.Runtime.BulkAutoFallbacks,
 	}
 	if snapshot.Runtime.TransportAttached {
 		summary.CurrentTransportCount = 1