ARCH: добавить value-flow pilot MCP discovery

docs/orchestration/address_truth_harness_phase19_mcp_discovery_response_gate.json

@@ -82,7 +82,36 @@
       ]
     },
     {
-      "step_id": "step_04_off_domain_living_chat_not_hijacked",
+      "step_id": "step_04_counterparty_value_flow_uses_guarded_discovery",
+      "title": "Unsupported-but-understood counterparty value-flow question uses guarded discovery answer",
+      "question": "какой денежный поток был у Группа СВК за 2020 год?",
+      "required_answer_patterns_all": [
+        "(?i)свк",
+        "(?i)1с|найден|строк|подтвержд",
+        "(?i)денеж|оборот|сумм|руб",
+        "(?i)2020|период",
+        "(?i)не подтвержд|проверенн|найденн"
+      ],
+      "forbidden_answer_patterns": [
+        "(?i)точный маршрут.*не подключ",
+        "(?i)не буду подставлять",
+        "(?i)query_documents",
+        "(?i)query_movements",
+        "(?i)runtime_",
+        "(?i)planner_",
+        "(?i)catalog_",
+        "(?i)primitive",
+        "(?i)pilot_"
+      ],
+      "criticality": "critical",
+      "semantic_tags": [
+        "mcp_discovery_value_flow",
+        "counterparty_turnover",
+        "unsupported_current_turn_meaning_boundary"
+      ]
+    },
+    {
+      "step_id": "step_05_off_domain_living_chat_not_hijacked",
       "title": "Off-domain living chat remains human and is not hijacked by discovery carryover",
       "question": "а чем капибара отличается от утки?",
       "required_answer_patterns_any": [