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

servertype.go

@@ -24,6 +24,8 @@ type Server interface {
 	SetStreamConfig(StreamConfig)
 	SetTransferResumeStore(TransferResumeStore)
 	RecoverTransferSnapshots(context.Context) error
+	SetBulkOpenTuning(BulkOpenTuning)
+	BulkOpenTuning() BulkOpenTuning
 	SetFileReceiveDir(dir string) error
 	send(c *ClientConn, msg TransferMsg) (WaitMsg, error)
 	sendEnvelope(c *ClientConn, env Envelope) error