Basic funtionality

docs(readme): rewrite README + add Chinese translation

- Remove MindTrek/mission workflow content; README now describes the project itself
- Fix outdated iOS 17+ tunnel claim (verified: device ops work over usbmuxd, no tunnel/sudo)
- Update Status from Scaffolded to reflect implemented core commands
- Expand command list from 5 to 13 + add Quick start walkthrough
- Add README_cn.md with symmetric language switcher
- Rewrite Why around the real pain point: avoiding account switching on the iOS device