Join: merge A3 (wip/registry-a3)

Conflicts, both sides kept: artifact-store-tools' invokes (the assigner's
and indexer's read tools, followed through views, beside the registry
seats' hold, release and remove), its main (the views reader and the
seat asker), its manifest row; gitea's invokes (the indexer's read tool,
the hand act and the builder's versions) and its consumes of the
indexer's views. gitea's account test takes the packages account's
names; repoCheckFacts, removed on main, is not imported. No catalogue
module reads the indexer's state.

Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig

modules/mesh-build-go/module.json

@@ -19,6 +19,9 @@
       "serves": ["current", "pause", "resume"]
     }
   ],
+  "consumes": [
+    "mesh-delivery-builder.version.numbered"
+  ],
   "reads": [
     "mesh-delivery-checker.kept"
   ],
@@ -68,9 +71,18 @@
   "requires": [
     "forge-account",
     "go-toolchain",
-    "artifact-store",
+    "go-package-registry",
     "node-tools"
   ],
+  "binds": {
+    "go-package-registry": "${dir:state}/go-package-registry.json"
+  },
+  "invokes": [
+    "seat:oci-artifact-registry.publish",
+    "seat:oci-artifact-registry.publish-part",
+    "seat:go-package-registry.publish",
+    "seat:go-package-registry.publish-part"
+  ],
   "own-secrets": {
     "broker": "${dir:state}/broker"
   },
@@ -158,14 +170,6 @@
       "mode": "0644",
       "template": "files/gitconfig"
     },
-    {
-      "id": "registry",
-      "type": "file",
-      "path": "${dir:state}/registry",
-      "owner": "mesh-build-go",
-      "mode": "0644",
-      "template": "files/registry"
-    },
     {
       "id": "git",
       "type": "package",
@@ -204,6 +208,15 @@
         "name": "files",
         "kind": "archive",
         "from": "files"
+      },
+      {
+        "name": "buildstep",
+        "kind": "package",
+        "language": "go",
+        "paths": [
+          "buildstep"
+        ],
+        "series": "0.1"
       }
     ]
   }