Capture mesh-catalog at feat/r4g (2246ccc4) with the templates its manifests name and its predefined.json, and lay the copy out as a repository's root

The catalogue's manifests moved their content into template files and fall back to predefined keys, so a copy of
module.json alone no longer passes the catalogue's own check; the bus's Dockerfile is gone from the catalogue.

testdata/beside/mesh-catalog/modules/unifi/module.json.captured

@@ -79,24 +79,47 @@
       }
     ]
   },
+  "config": {
+    "site": {
+      "type": "string",
+      "description": "The UniFi site the module's tools act on, by its id; the file's default is default.",
+      "trusted": true,
+      "default": "default"
+    },
+    "url": {
+      "type": "string",
+      "description": "The address the module's tools reach the UniFi controller at, as a URL; unset, the code falls back to its environment, else this machine's controller on its HTTPS port.",
+      "trusted": true,
+      "default": ""
+    },
+    "username": {
+      "type": "string",
+      "description": "The UniFi account the module's tools sign in as with the vault's password; unset, the code falls back to its environment.",
+      "trusted": true,
+      "default": ""
+    }
+  },
   "resources": [
     {
       "id": "mesh-state",
       "type": "directory",
       "mode": "0700",
-      "place": "mesh"
+      "place": "mesh",
+      "unknown": "program"
     },
     {
       "id": "state",
       "type": "directory",
       "mode": "0700",
-      "place": "."
+      "place": ".",
+      "unknown": "program"
     },
     {
       "id": "data",
       "type": "directory",
       "mode": "0700",
-      "owner": "1000:1000"
+      "owner": "1000:1000",
+      "unknown": "program"
     },
     {
       "id": "server",
@@ -130,8 +153,10 @@
       "type": "file",
       "path": "${dir:mesh-state}/config.json",
       "mode": "0600",
-      "content": "{\n  \"site\": \"default\",\n  \"password\": \"${secret:controller}\"\n}\n",
-      "merge": "json"
+      "template": "files/config.json",
+      "merge": "json",
+      "takes-config": ["site", "url", "username"],
+      "protected": ["password"]
     }
   ],
   "requires": [
@@ -167,6 +192,11 @@
           "MESH_UNIFI_URL": "https://127.0.0.1:${port:8443}",
           "MESH_UNIFI_CONFIG_FILE": "${dir:mesh-state}/config.json"
         }
+      },
+      {
+        "name": "files",
+        "kind": "archive",
+        "from": "files"
       }
     ]
   }