beimnettes/influencer-manager ? reverse-engineered prompt

Build me a full stack app for social media creators to keep all their content work in one place.

I want users to sign up and log in securely, then land on a dashboard that shows their upcoming posts and basic stats. They should be able to save content ideas, write and edit captions with platform and tone choices, schedule posts on a calendar style view, and manually track performance numbers for each post. Make it feel polished and professional, with a dark modern look, smooth interactions, and a responsive layout that works well on desktop and mobile.

Please include the backend and frontend so the whole thing runs end to end with a PostgreSQL database, auth, and the main CRUD flows wired up. Use current docs online if you need to, and make sure the app is ready to run locally with clear setup.