Copy Rumora?

Build me a Marketing web app like Rumora.

Rumora does: 50,000 AI agents mentioning your brand in relevant TikTok and YouTube videos before they go viral. They autonomously perform thousands of searches per day, analyze video transcripts to score for relev It reportedly makes about $4k/mo, so the core idea clearly has demand — I want a lean version I can run and charge for.

Start from the open-source project langchain-ai/social-media-agent (https://github.com/langchain-ai/social-media-agent) — reuse what fits, strip its branding, and build the specifics below on top of it.

Requirements:
- Connect accounts (X, LinkedIn, Instagram, etc.) via OAuth; compose once, publish everywhere.
- Calendar + queue scheduling, drafts, and a per-platform preview.
- AI: generate post variations and a week of content from a topic.
- Basic analytics (reach/engagement) pulled per platform.

Also:
- Clean, modern, responsive UI with a thoughtful landing page.
- Email/password auth and a simple paid tier (Stripe test mode) so it's ready to charge.
- A README covering setup, environment variables, and how to deploy.

Ship a working MVP I can run locally first, then help me deploy it.