Tango?

Build a focused replacement for Tango for a creator making short product demonstrations, based on this public product description: “Tango Live - Live Stream & Video Chat — Tango is your free video chat and live streaming platform to meet new people, stream live, and connect in real time, anytime. Join now and start chatting.” 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 record a selected screen/window with explicit microphone/system-audio permissions; save a local project and provide trim, crop, cursor, zoom, and speed controls; show preview, cancel/recovery, and export progress; make local processing and deletion visible.
- 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: a professional non-linear editor; cloud editing and team libraries; mobile capture parity. 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.