完成阶段 4

2026-03-27 08:04:25 +08:00
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+## MODIFIED Requirements
+
+### Requirement: Runtime network host pumps the dispatcher each frame
+The Unity-side runtime network host SHALL integrate a client-specific main-thread dispatcher implementation into its frame loop so queued network work is drained regularly while the network stack is running. That Unity dispatcher implementation MUST satisfy the shared host-dispatch abstraction used by the shared message-routing layer, while the transport background thread responsibilities remain limited to socket receive, KCP input/update, and transport-level error handling.
+
+#### Scenario: Network host drains queued messages during runtime
+- **WHEN** the Unity client runtime has started networking and a message is queued from the transport layer
+- **THEN** the Unity client host performs dispatcher draining during its Unity update loop
+- **THEN** the queued handler runs without the transport layer directly touching Unity objects
+
+#### Scenario: Transport layer remains free of Unity object mutation
+- **WHEN** developers inspect the responsibilities of the transport receive path after the shared networking refactor
+- **THEN** they find socket receive, KCP processing, and enqueue/error handling only
+- **THEN** Unity object mutation and UI updates are performed through the Unity host's main-thread dispatcher implementation rather than the transport callback path