propagate GITHUB_REPOSITORY

mcp/config.ts

@@ -4,6 +4,11 @@
 const actionPath = process.env.GITHUB_ACTION_PATH || process.cwd();
 
 export function createMcpConfig(githubInstallationToken: string) {
+  const githubRepository = process.env.GITHUB_REPOSITORY;
+  if (!githubRepository) {
+    throw new Error('GITHUB_REPOSITORY environment variable is required for MCP GitHub integration');
+  }
+
   return JSON.stringify(
     {
       mcpServers: {
@@ -12,6 +17,7 @@ export function createMcpConfig(githubInstallationToken: string) {
           args: [`${actionPath}/mcp/server.ts`],
           env: {
             GITHUB_INSTALLATION_TOKEN: githubInstallationToken,
+            GITHUB_REPOSITORY: githubRepository,
           },
         },
       },