diff --git a/tests/test_spawner.py b/tests/test_spawner.py
index 6eabe8c..f376d6c 100644
--- a/tests/test_spawner.py
+++ b/tests/test_spawner.py
@@ -414,6 +414,10 @@ class TestAgentBusyErrorClassification:
                 "state": {"status": "idle", "lock_pid_alive": True, "lock_expired": False},
                 "expected": "session_locked",
             },
+            {
+                "state": {"status": "running", "lock_pid_alive": True, "lock_expired": False},
+                "expected": "session_running",
+            },
             {
                 "state": {"status": "idle", "lock_pid_alive": False, "recent_compact": True},
                 "expected": "session_compacting",
@@ -450,3 +454,92 @@ class TestAgentBusyErrorClassification:
         assert err.detail["blockers"][0][0] == "session_locked"
         assert "my-agent" in str(err)
         assert "session_locked" in str(err)
+
+
+# ---------------------------------------------------------------------------
+# 司马懿评审补充：Phase 2.5 + session_stuck（v2.8 #07.1 v1.1 兜底）
+# ---------------------------------------------------------------------------
+
+class TestPhase25AndStuck:
+    """司马懿评审遗漏 #1 + session_stuck 遗漏补充"""
+
+    def test_phase25_stuck_fallback(self, spawner):
+        """Phase 0 不触发（status 非 running），Phase 2 检测到假死 → revive
+
+        Phase 2.5 是 #07 v1.1 加的兜底：Phase 0 时 session 正常（idle），
+        但 Phase 2 检查时变为 running + lock PID 死。Phase 2.5 应 revive。
+        """
+        call_count = [0]
+
+        def mock_check(agent_id):
+            call_count[0] += 1
+            if call_count[0] <= 1:
+                # Phase 0: 正常 idle，不触发 revive
+                return {"status": "idle", "lock_pid_alive": False}
+            # Phase 2: 假死（Phase 0 和 Phase 2 之间进程变 stuck）
+            return {"status": "running", "lock_pid_alive": False}
+
+        spawner._check_session_state = mock_check
+
+        revive_called = [False]
+        original_revive = spawner._revive_session
+
+        def mock_revive(agent_id):
+            revive_called[0] = True
+            return True
+
+        spawner._revive_session = mock_revive
+
+        # Phase 2.5 应触发 revive
+        session_id = asyncio.run(
+            spawner.spawn_full_agent(
+                "test-agent", "task",
+                task_id="t1", use_main_session=True,
+            )
+        )
+        assert revive_called[0], "Phase 2.5 should have revived stuck session"
+
+    def test_session_stuck_after_failed_revive(self, spawner):
+        """Phase 2.5 revive 失败 → session_stuck
+
+        假死 revive 后 status 仍为 running → AgentBusyError(session_stuck)。
+        """
+        call_count = [0]
+
+        def mock_check(agent_id):
+            call_count[0] += 1
+            if call_count[0] <= 1:
+                return {"status": "idle", "lock_pid_alive": False}
+            # Phase 2: 假死
+            return {"status": "running", "lock_pid_alive": False}
+
+        spawner._check_session_state = mock_check
+
+        # revive 后 session 仍 stuck
+        def mock_revive(agent_id):
+            return True  # revive 成功但 mock_check 不变，下次仍返回 running
+
+        # 让 revive 后 check 返回 stuck
+        revive_and_check_count = [0]
+        original_check = mock_check
+
+        def mock_check_v2(agent_id):
+            revive_and_check_count[0] += 1
+            if revive_and_check_count[0] <= 1:
+                return {"status": "idle", "lock_pid_alive": False}
+            if revive_and_check_count[0] == 2:
+                return {"status": "running", "lock_pid_alive": False}
+            # revive 后重检：仍 stuck
+            return {"status": "running", "lock_pid_alive": False}
+
+        spawner._check_session_state = mock_check_v2
+        spawner._revive_session = mock_revive
+
+        with pytest.raises(AgentBusyError) as exc_info:
+            asyncio.run(
+                spawner.spawn_full_agent(
+                    "test-agent", "task",
+                    task_id="t1", use_main_session=True,
+                )
+            )
+        assert "stuck" in exc_info.value.reason