chore(test): проверить конкурентную дедупликацию очереди в PostgreSQL

docs/ux-ui/acceptance/outbox-dedupe-2026-10-08.json

@@ -0,0 +1,26 @@
+{
+  "date": "2026-10-08",
+  "backendSource": "8782054",
+  "database": "mmapp_acceptance_20261007",
+  "productionFunction": "enqueueTelegramOutbox",
+  "actualConcurrentBlockedInserts": 2,
+  "receipts": [
+    true,
+    false
+  ],
+  "rows": [
+    {
+      "id": "acceptance-dedupe-1791431500914-a",
+      "dedupe_key": "acceptance-dedupe-1791431500914",
+      "status": "pending",
+      "resolution_version": 0
+    }
+  ],
+  "sequentialDuplicateRejected": true,
+  "externalMessagesSent": 0,
+  "limits": [
+    "No dispatcher invoked; Telegram delivery not tested",
+    "One backend process, multiple real pool connections; unique dedupe constraint exercised",
+    "Not Q-1 claim/settlement/unknown retry proof"
+  ]
+}