- create config/base-km.settings.json for API-key Kimi users
- rename preset id 'kimi' to 'km' in CLI and UI provider presets
- add 'ccs km' to help text API section, keep 'ccs kimi' for OAuth
- add --km delegation flag for API-key mode, --kimi stays for OAuth
- add kimi to UI CLIPROXY_PROVIDERS, assets, colors, names, device code