Audit batch 5: I-9, I-12, I-14, N-1..N-12, single-task wire single-transaction

cloud/routing_dryrun.py

@@ -98,6 +98,25 @@ def _tier_dropped_reason(raw_entry):
     return "unrecognised tier entry (expected string or dict)"
 
 
+def _empty_report(warnings, tiers, dropped, unknown, gateway):
+    """无效策略的空报告（审计批 5，N-10：纯结构整理，行为不变）。
+
+    dry_run_policy_document 的两处早期返回（非对象文档、解析
+    出空策略）原来各写一遍同样的 dict 骨架，只有 warnings 不同；
+    抽成助手后各处只传不同项。传入的列表按引用进报告（与原来
+    直接写字面量时同一语义），不拷贝。
+    """
+    return {
+        "valid": False, "blocked": True, "version": None,
+        "content_fingerprint": None,
+        "global_mode": None, "global_mode_source": None,
+        "tiers": tiers, "dropped_tiers": dropped,
+        "unknown_tiers": unknown, "warnings": warnings,
+        "would_activate": [], "would_shadow": [], "would_off": [],
+        "gateway": gateway,
+    }
+
+
 def dry_run_policy_document(data, env_mode_override=None,
                             gateway_model=None):
     """Dry-run one merged policy document (pure, no IO).
@@ -118,17 +137,10 @@ def dry_run_policy_document(data, env_mode_override=None,
                       if gateway_model else "env_unset"),
            "tiers": {}}
     if not isinstance(data, dict):
-        return {
-            "valid": False, "blocked": True, "version": None,
-            "content_fingerprint": None,
-            "global_mode": None, "global_mode_source": None,
-            "tiers": tiers_report, "dropped_tiers": dropped,
-            "unknown_tiers": unknown,
-            "warnings": ["policy document is not an object; "
-                         "the loader would ignore it entirely"],
-            "would_activate": [], "would_shadow": [], "would_off": [],
-            "gateway": _gw,
-        }
+        return _empty_report(
+            ["policy document is not an object; "
+             "the loader would ignore it entirely"],
+            tiers_report, dropped, unknown, _gw)
     raw_tiers = data.get("tiers")
     if isinstance(raw_tiers, dict):
         for name in sorted(raw_tiers):
@@ -142,15 +154,8 @@ def dry_run_policy_document(data, env_mode_override=None,
             "policy is unusable (no usable tiers, or global mode "
             "outside off/shadow/active); the loader would ignore it "
             "entirely and workers would keep the worker default")
-        return {
-            "valid": False, "blocked": True, "version": None,
-            "content_fingerprint": None,
-            "global_mode": None, "global_mode_source": None,
-            "tiers": tiers_report, "dropped_tiers": dropped,
-            "unknown_tiers": unknown, "warnings": warnings,
-            "would_activate": [], "would_shadow": [], "would_off": [],
-            "gateway": _gw,
-        }
+        return _empty_report(
+            warnings, tiers_report, dropped, unknown, _gw)
     global_mode = policy.mode
     global_source = "policy"
     if env_mode_override: