fix: give final acceptance a shared retry budget and diagnostics

tests/unit/agents/test_flash_acceptance.py

@@ -111,16 +111,36 @@ async def test_flash_reuses_checker_with_original_prompt_and_final_report(
 
 @pytest.mark.asyncio
 async def test_acceptance_timeout_finishes_with_unknown_verdict(tmp_path, monkeypatch):
+    from artemis.llm import final_review
+
     async def hanging_check(*args, **kwargs):
         await asyncio.Event().wait()
 
     monkeypatch.setattr(flash, "run_final_check", hanging_check)
+    monkeypatch.setattr(final_review, "MAX_FINAL_REVIEW_SECONDS", 0.01)
     data = await flash.settle_flash_outcome(
         context(tmp_path, checkpoint_timeout=0.01), "任务", {"status": "completed"}
     )
     assert data["task_status"] == "completed"
     assert data["test_result"]["status"] == "inconclusive"
-    assert "0.01 秒" in data["test_result"]["reason"]
+    assert "总预算已用尽（0.01 秒）" in data["test_result"]["reason"]
+
+
+@pytest.mark.asyncio
+async def test_flash_final_review_can_outlast_midway_checkpoint_timeout(tmp_path, monkeypatch):
+    async def slower_review(*args, **kwargs):
+        await asyncio.sleep(0.02)
+        return CheckReport(
+            test_result=CaseTestResult(
+                status="passed", reason="完整核对实际证据", evidence=["步骤 1 截图"]
+            )
+        )
+
+    monkeypatch.setattr(flash, "run_final_check", slower_review)
+    data = await flash.settle_flash_outcome(
+        context(tmp_path, checkpoint_timeout=0.001), "任务", {"status": "completed"}
+    )
+    assert data["test_result"]["status"] == "passed"
 
 
 @pytest.mark.asyncio