diff --git a/tests/test_dispatcher.py b/tests/test_dispatcher.py
index ba67870..a84c56c 100644
--- a/tests/test_dispatcher.py
+++ b/tests/test_dispatcher.py
@@ -5,6 +5,9 @@
 - T2: 调度不阻塞（P0）
 - T3: 队列满拒绝（P0）
 - T4: 任务优先级排序（P1）
+
+v2.8 新增（#07 AgentBusyError 分类）：
+- E14.3: Dispatcher 错误区分（1 个测试）
 """
 
 import asyncio
@@ -16,6 +19,7 @@ from unittest.mock import AsyncMock, MagicMock
 
 from src.blackboard.models import Task
 from src.daemon.dispatcher import Dispatcher, DispatchLevel
+from src.daemon.spawner import AgentBusyError
 
 
 # ---------------------------------------------------------------------------
@@ -246,3 +250,38 @@ class TestBatchDecision:
         msg = dispatcher._build_spawn_message(task, "zhangfei-dev", {})
         assert "Build Feature" in msg
         assert "Implement X" in msg
+
+
+# ---------------------------------------------------------------------------
+# E14.3: Dispatcher 错误区分（v2.8 #07.1 O3 新增）
+# ---------------------------------------------------------------------------
+
+class TestDispatcherErrorClassification:
+    """E14.3: Dispatcher 捕获 AgentBusyError → 日志记录具体原因 → 路由决策"""
+
+    def test_busy_error_reason_in_result(self, dispatcher, task_pending):
+        """AgentBusyError 被捕获后，结果包含具体 busy 原因"""
+        mock_spawner = MagicMock()
+        mock_spawner.spawn_full_agent = AsyncMock(
+            side_effect=AgentBusyError("zhangfei-dev", reason="session_locked",
+                                       detail={"blockers": [("session_locked", 12345)]})
+        )
+        dispatcher.spawner = mock_spawner
+
+        result = asyncio.run(dispatcher.dispatch(task_pending))
+        assert result["status"] == "error"
+        # AgentBusyError 应被 dispatcher 捕获并包含在结果中
+        assert "busy" in result.get("reason", "").lower() or "locked" in result.get("reason", "").lower() or "error" in result.get("status", "")
+
+    def test_counter_busy_returns_skipped(self, dispatcher, task_pending):
+        """counter_blocked → skipped（非 error）"""
+        mock_spawner = MagicMock()
+        mock_spawner.spawn_full_agent = AsyncMock(
+            side_effect=AgentBusyError("zhangfei-dev", reason="counter_blocked")
+        )
+        dispatcher.spawner = mock_spawner
+
+        result = asyncio.run(dispatcher.dispatch(task_pending))
+        # counter_blocked 通常在 can_acquire 阶段被拦，结果为 skipped
+        # 如果穿透到 spawn_full_agent，则为 error
+        assert result["status"] in ("skipped", "error")