diff --git a/health-and-repair/seats/mesh-conditions/fixtures/states.json b/health-and-repair/seats/mesh-conditions/fixtures/states.json
index 0cac1dd..f8b2682 100644
--- a/health-and-repair/seats/mesh-conditions/fixtures/states.json
+++ b/health-and-repair/seats/mesh-conditions/fixtures/states.json
@@ -113,5 +113,47 @@
       ],
       "at": "2026-10-26T20:19:41.474823121Z"
     }
+  },
+  {
+    "name": "a finding owned by a session and waiting on a seat (design 47 G 678)",
+    "of": "state:findings/<key>",
+    "given": {
+      "v": 1,
+      "key": "module.mesh-host.ace.directory-used-as-found",
+      "kind": "directory-used-as-found",
+      "subject": {
+        "scope": "module",
+        "id": "mesh-host.ace",
+        "machine": "ace"
+      },
+      "severity": "warning",
+      "summary": "a directory waits for a hand",
+      "source": "health-report",
+      "observer": "mesh-delivery-watchman",
+      "at": "2026-11-11T10:00:00Z",
+      "owner": "jochen@shanks",
+      "waiting-on": "node-engine"
+    }
+  },
+  {
+    "name": "a finding owned by a seat and waiting on a commit's author (design 47 G 678, 540)",
+    "of": "state:findings/<key>",
+    "given": {
+      "v": 1,
+      "key": "module.mesh-host.ace.directory-used-as-found",
+      "kind": "directory-used-as-found",
+      "subject": {
+        "scope": "module",
+        "id": "mesh-host.ace",
+        "machine": "ace"
+      },
+      "severity": "warning",
+      "summary": "a directory waits for a hand",
+      "source": "health-report",
+      "observer": "mesh-delivery-watchman",
+      "at": "2026-11-11T10:00:00Z",
+      "owner": "node-engine",
+      "waiting-on": "forge:jochen"
+    }
   }
 ]
diff --git a/health-and-repair/seats/mesh-conditions/seat.json b/health-and-repair/seats/mesh-conditions/seat.json
index 0591b4a..e4fc40a 100644
--- a/health-and-repair/seats/mesh-conditions/seat.json
+++ b/health-and-repair/seats/mesh-conditions/seat.json
@@ -411,11 +411,13 @@
               },
               "owner": {
                 "type": "string",
-                "description": "the module the finding is about, when not the observer"
+                "pattern": "^([a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*|[a-z][a-z0-9-]*|forge:[A-Za-z0-9._-]+)$",
+                "description": "who the finding is about, when not the observer: a session who@node (^[a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*$), a seat's name (^[a-z][a-z0-9-]*$) or a commit's author forge:<account> (^forge:[A-Za-z0-9._-]+$); another is refused (design 47 G 678)"
               },
               "waiting-on": {
                 "type": "string",
-                "description": "what it waits on: a person, a part or a call"
+                "pattern": "^([a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*|[a-z][a-z0-9-]*|forge:[A-Za-z0-9._-]+)$",
+                "description": "what it waits on: a session who@node (^[a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*$), a seat's name (^[a-z][a-z0-9-]*$) or a commit's author forge:<account> (^forge:[A-Za-z0-9._-]+$); another is refused (design 47 G 678)"
               }
             },
             "required": [
@@ -819,11 +821,13 @@
         },
         "owner": {
           "type": "string",
-          "description": "the module the finding is about, when not the observer"
+          "pattern": "^([a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*|[a-z][a-z0-9-]*|forge:[A-Za-z0-9._-]+)$",
+          "description": "who the finding is about, when not the observer: a session who@node (^[a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*$), a seat's name (^[a-z][a-z0-9-]*$) or a commit's author forge:<account> (^forge:[A-Za-z0-9._-]+$); another is refused (design 47 G 678)"
         },
         "waiting-on": {
           "type": "string",
-          "description": "what it waits on: a person, a part or a call"
+          "pattern": "^([a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*|[a-z][a-z0-9-]*|forge:[A-Za-z0-9._-]+)$",
+          "description": "what it waits on: a session who@node (^[a-z0-9][a-z0-9._-]*@[a-z0-9][a-z0-9-]*$), a seat's name (^[a-z][a-z0-9-]*$) or a commit's author forge:<account> (^forge:[A-Za-z0-9._-]+$); another is refused (design 47 G 678)"
         },
         "actions": {
           "type": "array",