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

integration_security_test.go

@@ -0,0 +1,18 @@
+package notify
+
+import "b612.me/starcrypto"
+
+var integrationSharedSecret = []byte("notify-integration-modern-psk")
+
+func integrationModernPSKOptions() *ModernPSKOptions {
+	return &ModernPSKOptions{
+		Salt: []byte("notify-integration-modern-psk-salt"),
+		AAD:  []byte("notify-integration-modern-psk-aad"),
+		Argon2Params: starcrypto.Argon2Params{
+			Time:    1,
+			Memory:  8,
+			Threads: 1,
+			KeyLen:  32,
+		},
+	}
+}