SamurAIGPT/social-post ? reverse-engineered prompt

Build me a polished AI social post generator SaaS where a user can sign in with Google, enter a topic, pick a platform like LinkedIn, X, Instagram, Facebook, Reddit, or LINE, and get a ready to use post in the right style.

I want the app to feel like a real product, with a clean modern dashboard, live previews of each platform, tone and language options, character length controls, and toggles for things like emojis, hashtags, and titles. It should let people copy the post or open a publish style flow that feels like they are sending it into the right social composer. Save past generations in a history section so users can review and reuse them later.

Please also include credits and paid plans with Stripe, so generating posts uses credits and users can buy more when they run out. Use a solid database and make it production ready, mobile friendly, and easy to deploy. If you need current docs for anything, look them up online first.