The unauthenticated welcome screen previously offered only 'Login with
Kimi Code'. It now lists every interactive platform the shell
advertises, matching the official kimi-cli picker:
Kimi Code (OAuth)
Moonshot Open Platform (API key · moonshot.cn)
Moonshot Open Platform (API key · moonshot.ai)
Quit
- Shell: new ACP auth methods moonshot-cn / moonshot-ai (advertised
after kimi-code; the BYOK first-position invariant holds).
authenticate(moonshot-*) reloads keys from env>config, fails with an
actionable message when none is configured, validates the key against
GET {base}/models (401 → 'invalid API key' naming the console), then
swaps the fresh config in, triggers the model sync, and reports
auth_mode api_key so the pager treats it like other API-key logins.
Never session-based; keys never logged.
- Config: save_platform_api_key persists [platforms.<id>].api_key via an
atomic mode-preserving write under the config lock; refuses OAuth
platforms, blank keys, and unparseable files.
- TUI: the Pending welcome renders the picker rows from the advertised
methods (arrows/Enter/mouse; 'l' keeps selecting the OAuth row).
Choosing a Moonshot row opens a masked paste box ('Paste your Moonshot
API key (from platform.moonshot.cn)'); Esc returns to the picker,
Enter persists the key and authenticates in one sequential effect;
failures return to the picker with the error line, success lands on
the normal welcome. Startup eager-auth is unchanged: a key already in
the environment authenticates exactly as before, and single-method
shells keep the historical auto-device-flow.
Gates: workspace check/clippy 0/0; shell 4870 + tui 6620 lib tests
green; headless probe advertises [kimi-code, moonshot-cn, moonshot-ai]
for a fresh user and xai.api_key-first with a key configured.