Add documented KoKonna failure policy, bounded retries and durable recovery escalation [skip ci]

tests/schema-contract.json

@@ -613,6 +613,16 @@
   },
   "Operation": {
     "properties": {
+      "recovery": {
+        "anyOf": [
+          {
+            "$ref": "#/components/schemas/RecoveryState"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
       "operation_id": {
         "type": "string",
         "title": "Operation Id"
@@ -1422,5 +1432,48 @@
       "type"
     ],
     "title": "AutoCollageContent"
+  },
+  "RecoveryState": {
+    "properties": {
+      "state": {
+        "type": "string",
+        "enum": [
+          "checking",
+          "manual_review",
+          "resolved"
+        ],
+        "title": "State"
+      },
+      "reason": {
+        "type": "string",
+        "title": "Reason"
+      },
+      "first_checked_at": {
+        "type": "string",
+        "title": "First Checked At"
+      },
+      "last_checked_at": {
+        "type": "string",
+        "title": "Last Checked At"
+      },
+      "checks": {
+        "type": "integer",
+        "title": "Checks"
+      },
+      "requires_manual_review": {
+        "type": "boolean",
+        "title": "Requires Manual Review"
+      }
+    },
+    "type": "object",
+    "required": [
+      "state",
+      "reason",
+      "first_checked_at",
+      "last_checked_at",
+      "checks",
+      "requires_manual_review"
+    ],
+    "title": "RecoveryState"
   }
 }