Add a structured installation guide (CLI_INSTALL.md) designed for AI agents
to fetch and execute step-by-step: install CLI, authenticate, and start the
daemon. Update README and README.zh-CN CLI sections with an agent-friendly
paste option alongside the existing manual instructions.
Also fix brew formula name in CLI_AND_DAEMON.md (multica-cli → multica) to
match .goreleaser.yml.
Add an end-to-end onboarding guide covering login, daemon setup,
runtime verification, agent creation, and first task assignment.
Updated both English and Chinese READMEs.
- Replace "project management platform" framing with landing page
positioning: "turns coding agents into real teammates"
- Use landing page hero subheading for tagline
- Rewrite "What is Multica?" to emphasize agent autonomy, not PM features
- Update features to match landing page sections (autonomous execution,
reusable skills, unified runtimes)
- Apply same changes to Chinese README using landing page zh translations
- Change Cloud link from app.multica.ai to multica.ai/app
- Add README.zh-CN.md with full Chinese translation
- Add language switcher (English | 简体中文) to both READMEs
