postgres implements the store seat's verbs under the seat's name, and its claim says so (hq ADR 0160)

The store's databases and query are registered under mesh-store, so the runtime serves them on the
seat's subjects wherever postgres holds the seat and never lists them as postgres's own; the claim
names them, so the mesh can judge the holder without postgres listing the seat's verbs among its
tools. Scoped to what the store enables: creating a database stays postgres's tool.

modules/postgres/module.json

@@ -10,7 +10,11 @@
   "claims": [
     {
       "name": "mesh-store",
-      "scope": "mesh"
+      "scope": "mesh",
+      "serves": [
+        "databases",
+        "query"
+      ]
     }
   ],
   "capabilities": [
@@ -133,11 +137,5 @@
         "from": "Dockerfile"
       }
     ]
-  },
-  "tools": [
-    "databases",
-    "query",
-    "postgres_list_databases",
-    "postgres_query"
-  ]
+  }
 }