fix(mosaic): gateway token recovery review remediations (#414)

packages/mosaic/src/commands/gateway.ts

@@ -126,10 +126,18 @@ export function registerGatewayCommand(program: Command): void {
     .description('Sign in to the gateway (defaults to URL from meta.json)')
     .option('-g, --gateway <url>', 'Gateway URL (overrides meta.json)')
     .option('-e, --email <email>', 'Email address')
-    .option('-p, --password <password>', 'Password')
+    .option(
+      '-p, --password <password>',
+      '[UNSAFE] Avoid — exposes credentials in shell history and process listings',
+    )
     .action(async (cmdOpts: { gateway?: string; email?: string; password?: string }) => {
       const { runLogin } = await import('./gateway/login.js');
       const url = getGatewayUrl(cmdOpts.gateway);
+      if (cmdOpts.password) {
+        console.warn(
+          'Warning: --password flag exposes credentials in shell history and process listings.',
+        );
+      }
       try {
         await runLogin({ gatewayUrl: url, email: cmdOpts.email, password: cmdOpts.password });
       } catch (err) {