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/ssh-client/module.json.captured

@@ -1,6 +1,7 @@
 {
   "module": "ssh-client",
   "version": "1",
+  "moved": true,
   "tools": [
     "ssh_client_hosts",
     "ssh_client_resolve",
@@ -11,6 +12,12 @@
     "ssh_client_known_host",
     "ssh_client_test"
   ],
+  "requires": [
+    "forge-account"
+  ],
+  "state": [
+    "keys"
+  ],
   "data": {
     "own": [
       {
@@ -27,14 +34,16 @@
       "type": "directory",
       "path": "${machine:account-home}/.ssh",
       "owner": "${machine:account}",
-      "mode": "0700"
+      "mode": "0700",
+      "unknown": "module"
     },
     {
       "id": "config-d",
       "type": "directory",
       "path": "${machine:account-home}/.ssh/config.d",
       "owner": "${machine:account}",
-      "mode": "0700"
+      "mode": "0700",
+      "unknown": "module"
     },
     {
       "id": "config",
@@ -44,7 +53,33 @@
       "mode": "0600",
       "into": "block",
       "at": "start",
-      "content": "# The mesh's region (module ssh-client, novox/hq research 027/03). It comes first because ssh\n# takes the first value it finds for each option. It brings in ~/.ssh/config.d/ in name order:\n# 00-mesh, the mesh's Host per machine, then each file another module places there. Replaced at\n# every push. Everything below it is yours, kept as you wrote it, and applies to every host the\n# files above leave unsettled.\nInclude ~/.ssh/config.d/*\n"
+      "template": "files/config"
+    },
+    {
+      "id": "known-hosts",
+      "type": "file",
+      "path": "${machine:account-home}/.ssh/known_hosts",
+      "owner": "${machine:account}",
+      "mode": "0644",
+      "into": "block",
+      "template": "files/known_hosts"
+    },
+    {
+      "id": "forge-host",
+      "type": "file",
+      "path": "${machine:account-home}/.ssh/config.d/10-forge",
+      "owner": "${machine:account}",
+      "mode": "0600",
+      "template": "files/forge"
+    },
+    {
+      "id": "git-config",
+      "type": "file",
+      "path": "${machine:account-home}/.config/git/config",
+      "owner": "${machine:account}",
+      "mode": "0644",
+      "into": "block",
+      "template": "files/gitconfig"
     }
   ],
   "facts": {
@@ -66,6 +101,11 @@
         "loads": [
           "ssh-client-tools"
         ]
+      },
+      {
+        "name": "files",
+        "kind": "archive",
+        "from": "files"
       }
     ]
   }