fix(api): 决议O终审修复波——判卡/判因子与decompose worker并发窗口闭合(两端点load→save持_DECOMPOSE_LOCK+在飞判死409,C2)+判卡半态诚实化(append_event/卡片库失败留痕card_verdict_half_state附记+终态竞态422,I1)+reason 500上限(NOTE2) [vps]

tests/api/test_routes_pipeline_hypotheses.py

@@ -696,6 +696,24 @@ class TestCardVerdict:
                         json={"reason": "想法被新文献证伪"})
         assert r.status_code == 200 and r.json()["buried"] == []
 
+    def test_kill_while_decompose_running_409(self, client, monkeypatch):
+        """codex 终审 C2:在飞分解时判死 409 快拒(防 worker 旧对象覆盖复活墓园)."""
+        from sanguo_api import decompose_jobs
+        monkeypatch.setattr(decompose_jobs, "is_running", lambda hyp_id: True)
+        r = client.post("/api/v1/pipeline/hypotheses/hyp-any/verdict",
+                        json={"reason": "分解中判死"})
+        assert r.status_code == 409 and "分解" in r.json()["detail"]
+
+    def test_kill_reason_too_long_422(self, client, env2, monkeypatch, tmp_path):
+        """codex 终审 NOTE2:reason 上限 500,超限 422."""
+        reg = tmp_path / "empty2.yaml"
+        reg.write_text("factors: {}\n", encoding="utf-8")
+        monkeypatch.setenv("SANGUO_FACTOR_REGISTRY", str(reg))
+        self._mk_card("queued")
+        r = client.post("/api/v1/pipeline/hypotheses/hyp-kill1/verdict",
+                        json={"reason": "长" * 501})
+        assert r.status_code == 422 and "reason 过长" in r.json()["detail"]
+
 
 class TestFactorsCauseAndDecompose422:
     def test_factors_carry_cause(self, client, monkeypatch, tmp_path):