Quickstart guide for supercode CLI — install to first chat in 5 minutes

[yashdev9274]

Description

Write a step-by-step quickstart guide from zero to first agentic coding session in under 5 minutes.

Expected Deliverables

1. Install: curl -fsSL https://supercli.vercel.app/install | bash
2. Verify: supercode --version
3. Authenticate: supercode login
4. Start chatting: supercode init → chat mode
5. Run agent mode: supercode init → agent mode
6. Switch providers: /model slash command
7. Exit: type exit

• Include embedded terminal GIF or screenshots
• "What's next" section pointing to full docs

Why

A focused quickstart lowers the barrier to entry and gives users immediate value.