feat(cli): defer devtools startup and integrate with F12 (#18695)

packages/cli/src/nonInteractiveCli.ts

@@ -72,10 +72,10 @@ export async function runNonInteractive({
     });
 
     if (process.env['GEMINI_CLI_ACTIVITY_LOG_TARGET']) {
-      const { registerActivityLogger } = await import(
+      const { setupInitialActivityLogger } = await import(
         './utils/devtoolsService.js'
       );
-      await registerActivityLogger(config);
+      await setupInitialActivityLogger(config);
     }
 
     const { stdout: workingStdout } = createWorkingStdio();