[beginwebdev2002]

Fixed an issue in vibe-check-runner.js where processing multiple files concurrently via Promise.all would lead to overwritten "Golden Prompts" in state and thus incorrect simulation generations. Now correctly processes each file sequentially in a grouped structure. Also modified the success commit message to [chore: fidelity-pass] per the required specifications, and replaced synchronous fs.existsSync with the asynchronous await fileOrDirExists helper for better non-blocking loop handling, preventing source files from overwriting each other by giving them unique names.

---

PR created automatically by Jules for task 6966803299815935143 started by @beginwebdev2002

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.