fix: retarget updater to @mosaic/mosaic

packages/cli/src/cli.ts

@@ -314,7 +314,8 @@ program
   .description('Check for and install Mosaic CLI updates')
   .option('--check', 'Check only, do not install')
   .action(async (opts: { check?: boolean }) => {
-    const { checkForUpdate, formatUpdateNotice } = await import('@mosaic/mosaic');
+    const { checkForUpdate, formatUpdateNotice, getInstallCommand } =
+      await import('@mosaic/mosaic');
     const { execSync } = await import('node:child_process');
 
     console.log('Checking for updates…');
@@ -344,7 +345,7 @@ program
     try {
       // Relies on @mosaic:registry in ~/.npmrc — do NOT pass --registry
       // globally or non-@mosaic deps will 404 against the Gitea registry.
-      execSync('npm install -g @mosaic/cli@latest', {
+      execSync(getInstallCommand(result), {
         stdio: 'inherit',
         timeout: 60_000,
       });