feat(notify): 重构通信内核并补齐 stream/bulk/record/transfer 能力

- 引入 LogicalConn/TransportConn 分层，ClientConn 保留兼容适配层
  - 新增 Stream、Bulk、RecordStream 三条数据面能力及对应控制路径
  - 完成 transfer/file 传输内核与状态快照、诊断能力
  - 补齐 reconnect、inbound dispatcher、modern psk 等基础模块
  - 增加大规模回归、并发与基准测试覆盖
  - 更新依赖库

starnotify/diagnostics_test.go

@@ -0,0 +1,40 @@
+package starnotify
+
+import "testing"
+
+func TestGetDiagnosticsSnapshotByKeyDefaults(t *testing.T) {
+	const clientKey = "diagnostics-client"
+	const serverKey = "diagnostics-server"
+	_ = DeleteClient(clientKey)
+	_ = DeleteServer(serverKey)
+	defer DeleteClient(clientKey)
+	defer DeleteServer(serverKey)
+
+	NewClient(clientKey)
+	NewServer(serverKey)
+
+	clientSnapshot, err := GetClientDiagnosticsSnapshot(clientKey)
+	if err != nil {
+		t.Fatalf("GetClientDiagnosticsSnapshot failed: %v", err)
+	}
+	if got, want := clientSnapshot.Runtime.OwnerState, "idle"; got != want {
+		t.Fatalf("client Runtime.OwnerState = %q, want %q", got, want)
+	}
+	if clientSnapshot.Summary.LogicalCount != 0 || clientSnapshot.Summary.StreamCount != 0 || clientSnapshot.Summary.BulkCount != 0 || clientSnapshot.Summary.TransferCount != 0 {
+		t.Fatalf("unexpected default client summary: %+v", clientSnapshot.Summary)
+	}
+
+	serverSnapshot, err := GetServerDiagnosticsSnapshot(serverKey)
+	if err != nil {
+		t.Fatalf("GetServerDiagnosticsSnapshot failed: %v", err)
+	}
+	if got, want := serverSnapshot.Runtime.OwnerState, "idle"; got != want {
+		t.Fatalf("server Runtime.OwnerState = %q, want %q", got, want)
+	}
+	if len(serverSnapshot.Logicals) != 0 || len(serverSnapshot.CurrentTransports) != 0 {
+		t.Fatalf("unexpected default server diagnostics: %+v", serverSnapshot)
+	}
+	if serverSnapshot.Summary.LogicalCount != 0 || serverSnapshot.Summary.StreamCount != 0 || serverSnapshot.Summary.BulkCount != 0 || serverSnapshot.Summary.TransferCount != 0 {
+		t.Fatalf("unexpected default server summary: %+v", serverSnapshot.Summary)
+	}
+}