fix(release): sync marketplace.json version on release

The sync-release-metadata.ts script updated package.json, server.json,
plugin.json, and README.md badges, but skipped marketplace.json — so
its plugin entry stayed pinned at 1.1.0 while the rest of the package
moved to 1.21.2.

Adds marketplace.json to the script (matching the plugin entry by
package.json name) and to the @semantic-release/git assets array so the
file is actually committed on release. One-time bump 1.1.0 → 1.21.2
included to bring the manifest into sync now.

Author: Mearman

.claude-plugin/marketplace.json

@@ -1,21 +1,21 @@
 {
-	"name": "agent-comms",
-	"owner": {
-		"name": "ExaDev"
-	},
-	"metadata": {
-		"description": "Cross-harness communication mesh for LLM agents",
-		"homepage": "https://github.com/ExaDev/agent-comms#readme"
-	},
-	"plugins": [
-		{
-			"name": "agent-comms",
-			"source": {
-				"source": "url",
-				"url": "https://github.com/ExaDev/agent-comms.git"
-			},
-			"description": "Cross-harness LLM agent communication mesh — rooms, DMs, and presence",
-			"version": "1.1.0"
-		}
-	]
+  "name": "agent-comms",
+  "owner": {
+    "name": "ExaDev"
+  },
+  "metadata": {
+    "description": "Cross-harness communication mesh for LLM agents",
+    "homepage": "https://github.com/ExaDev/agent-comms#readme"
+  },
+  "plugins": [
+    {
+      "name": "agent-comms",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/ExaDev/agent-comms.git"
+      },
+      "description": "Cross-harness LLM agent communication mesh — rooms, DMs, and presence",
+      "version": "1.22.0"
+    }
+  ]
 }

release.config.ts

@@ -58,6 +58,7 @@ const config: GlobalConfig = {
           "package.json",
           "pnpm-lock.yaml",
           ".claude-plugin/plugin.json",
+          ".claude-plugin/marketplace.json",
           "server.json",
           "CHANGELOG.md",
           "README.md",

scripts/sync-release-metadata.ts

@@ -33,6 +33,7 @@ function stringifyJson(value: JsonObject): string {
 const root = process.cwd();
 const packagePath = path.join(root, "package.json");
 const pluginPath = path.join(root, ".claude-plugin/plugin.json");
+const marketplacePath = path.join(root, ".claude-plugin/marketplace.json");
 const serverPath = path.join(root, "server.json");
 const readmePath = path.join(root, "README.md");
 
@@ -44,6 +45,10 @@ const pluginObject = parseJsonObject(
   await readFile(pluginPath, "utf8"),
   ".claude-plugin/plugin.json",
 );
+const marketplaceObject = parseJsonObject(
+  await readFile(marketplacePath, "utf8"),
+  ".claude-plugin/marketplace.json",
+);
 const serverObject = parseJsonObject(
   await readFile(serverPath, "utf8"),
   "server.json",
@@ -65,6 +70,28 @@ const pluginVersion = requireString(
   ".claude-plugin/plugin.json version",
 );
 
+// marketplace.json contains a `plugins` array — find the entry whose name
+// matches package.json `name` and bump its version. Throw if the plugin
+// isn't declared at all, since that would silently leave the manifest stale.
+const marketplacePluginsValue = marketplaceObject.plugins;
+if (!isUnknownArray(marketplacePluginsValue)) {
+  throw new Error(
+    ".claude-plugin/marketplace.json must declare a plugins array",
+  );
+}
+const marketplacePluginEntry = marketplacePluginsValue.find(
+  (entry): entry is JsonObject => isRecord(entry) && entry.name === packageName,
+);
+if (!marketplacePluginEntry) {
+  throw new Error(
+    `.claude-plugin/marketplace.json has no plugin entry named "${packageName}"`,
+  );
+}
+const marketplacePluginVersion = requireString(
+  marketplacePluginEntry.version,
+  `.claude-plugin/marketplace.json plugins[name=${packageName}].version`,
+);
+
 if (serverName !== mcpName) {
   throw new Error(
     `server.json name (${serverName}) must match package.json mcpName (${mcpName})`,
@@ -103,6 +130,7 @@ if (identifier !== packageName) {
 serverObject.version = packageVersion;
 packageEntryValue.version = packageVersion;
 pluginObject.version = packageVersion;
+marketplacePluginEntry.version = packageVersion;
 
 const readmeContent = await readFile(readmePath, "utf8");
 const updatedReadme = readmeContent
@@ -114,6 +142,7 @@ const updatedReadme = readmeContent
 
 const needsServerWrite = serverVersion !== packageVersion;
 const needsPluginWrite = pluginVersion !== packageVersion;
+const needsMarketplaceWrite = marketplacePluginVersion !== packageVersion;
 const needsReadmeWrite = readmeContent !== updatedReadme;
 
 if (needsServerWrite) {
@@ -122,6 +151,9 @@ if (needsServerWrite) {
 if (needsPluginWrite) {
   await writeFile(pluginPath, stringifyJson(pluginObject));
 }
+if (needsMarketplaceWrite) {
+  await writeFile(marketplacePath, stringifyJson(marketplaceObject));
+}
 if (needsReadmeWrite) {
   await writeFile(readmePath, updatedReadme);
 }