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/mosquitto/module.json.captured

@@ -78,24 +78,28 @@
       "id": "mesh-state",
       "type": "directory",
       "mode": "0700",
-      "place": "mesh"
+      "place": "mesh",
+      "unknown": "program"
     },
     {
       "id": "state",
       "type": "directory",
       "mode": "0700",
-      "place": "."
+      "place": ".",
+      "unknown": "program"
     },
     {
       "id": "grants",
       "type": "directory",
-      "mode": "0700"
+      "mode": "0700",
+      "unknown": "program"
     },
     {
       "id": "data",
       "type": "directory",
       "mode": "0700",
-      "owner": "1883:1883"
+      "owner": "1883:1883",
+      "unknown": "program"
     },
     {
       "id": "server-conf",
@@ -103,7 +107,7 @@
       "path": "${dir:state}/mosquitto.conf",
       "mode": "0600",
       "owner": "1883:1883",
-      "content": "persistence true\npersistence_location /mosquitto/data\n\nlog_dest stdout\nlog_type warning\nlog_type error\nlog_type notice\n\n# Every client authenticates; identities and their per-topic ACLs are managed\n# at runtime by the dynamic security plugin, whose store the plugin itself owns.\nallow_anonymous false\nplugin /usr/lib/mosquitto_dynamic_security.so\nplugin_opt_config_file /mosquitto/data/dynamic-security.json\n\n# MQTT listener\nlistener 1883\n\n# MQTT-over-WebSockets listener\nlistener 8081\nprotocol websockets\n"
+      "template": "files/mosquitto.conf"
     },
     {
       "id": "net",
@@ -115,7 +119,7 @@
       "type": "file",
       "path": "${dir:state}/bootstrap.env",
       "mode": "0600",
-      "content": "MESH_PROVISION_MQTT=127.0.0.1:${port:1883}\nMESH_PROVISION_ADMIN_USER=mesh-admin\nMESH_PROVISION_PASSWORD_FILE=${dir:mesh-state}/admin\nMESH_DYNSEC_FILE=${dir:data}/dynamic-security.json\nMESH_MQTT_CTRL_IMAGE=eclipse-mosquitto@sha256:38c0da4f2ef84284d47b3b3eeea1cb3bdeabe81ee10caf0cd5c5ff61ee3ea408\nMESH_MQTT_CTRL_CONTAINER=mosquitto\nMESH_MQTT_ADMIN_APPLIED_FILE=${dir:state}/admin.applied\n"
+      "template": "files/bootstrap.env"
     },
     {
       "id": "bootstrap",
@@ -179,6 +183,11 @@
           "MESH_PROVISION_PASSWORD_FILE": "${dir:mesh-state}/admin",
           "MESH_MQTT_CTRL_CONTAINER": "mosquitto"
         }
+      },
+      {
+        "name": "files",
+        "kind": "archive",
+        "from": "files"
       }
     ]
   }