add the MCP registry manifest and OCI ownership label

server.json names the server team.gaijin/go-gerrit-mcp and lists the
ghcr image as its only package: raw release binaries and Go modules
have no supported registry type. Version and image tag are 0.0.0
placeholders; the publish job stamps both from the release tag.

The registry verifies OCI package ownership by matching the image's
io.modelcontextprotocol.server.name label against the manifest name,
so the label must ship in the image the registry entry points at.

Refs: #22

Author: xobotyi

.goreleaser.yaml

@@ -32,6 +32,9 @@ dockers_v2:
       org.opencontainers.image.title: "{{ .ProjectName }}"
       org.opencontainers.image.version: "{{ .Version }}"
       org.opencontainers.image.source: "{{ .GitURL }}"
+      # The MCP registry verifies OCI package ownership by matching this
+      # label against the server.json name; without it the publish fails.
+      io.modelcontextprotocol.server.name: "team.gaijin/go-gerrit-mcp"
 
 checksum:
   name_template: checksums.txt

server.json

@@ -0,0 +1,54 @@
+{
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
+  "name": "team.gaijin/go-gerrit-mcp",
+  "title": "Gerrit Code Review",
+  "description": "Capability-gated MCP tools for Gerrit code review: search, read diffs, comment, vote, transition",
+  "version": "0.0.0",
+  "repository": {
+    "url": "https://github.com/GaijinEntertainment/go-gerrit-mcp",
+    "source": "github",
+    "id": "1285115759"
+  },
+  "packages": [
+    {
+      "registryType": "oci",
+      "identifier": "ghcr.io/gaijinentertainment/go-gerrit-mcp:0.0.0",
+      "transport": {
+        "type": "stdio"
+      },
+      "environmentVariables": [
+        {
+          "name": "GERRIT_URL",
+          "description": "Base URL of the Gerrit instance",
+          "isRequired": true
+        },
+        {
+          "name": "GERRIT_USERNAME",
+          "description": "Account username for HTTP authentication",
+          "isRequired": true
+        },
+        {
+          "name": "GERRIT_TOKEN",
+          "description": "HTTP password or token of the account",
+          "isRequired": true,
+          "isSecret": true
+        },
+        {
+          "name": "GERRIT_MCP_GROUPS",
+          "description": "Comma-separated capability groups to enable: read, comment, transition",
+          "default": "read"
+        },
+        {
+          "name": "GERRIT_MCP_PROJECTS",
+          "description": "Comma-separated Gerrit project allowlist confining every operation"
+        },
+        {
+          "name": "GERRIT_MCP_OWN_CHANGES_ONLY",
+          "description": "Refuse trail-leaving operations on changes not owned by the authenticated account",
+          "format": "boolean",
+          "default": "true"
+        }
+      ]
+    }
+  ]
+}