Buffer?

Build a focused replacement for Buffer for an independent creator managing one social channel, based on this public product description: “Buffer: Social media management for everyone — Use Buffer to manage your social media so that you can create and share your content everywhere, consistently. Try our forever free plan or upgrade for more.” Do not copy the original brand, proprietary assets, name, logo, UI, or copy; create an original visual system.

Core workflow
- Recreate only the narrow primary workflow described above, with draft, edit, preview, schedule, and archive posts; keep platform-specific text limits and media validation visible; show a review queue and publish errors; include an exportable content calendar and lightweight performance notes.
- Keep the product name and source description in a research note in the README, and turn every uncertain behavior into an explicit assumption or user setting rather than inventing a feature.
- Use a small React/TypeScript app with a portable JSON or SQLite data model, clear loading/empty/error states, and adapters around external services. Seed realistic demo data so the complete workflow works without paid credentials.

Scope boundaries
- Out of scope for v1: multi-network enterprise publishing; scraping or automated engagement; algorithm or growth guarantees. Do not promise feature parity, proprietary data, or enterprise reliability.

Include a README with setup, environment variables, data model, implementation decisions, privacy behavior, testing instructions, and important limitations.