[daviddanialy]

Summary

The /model provider page now lists providers you can sign in to but haven't yet, below the signed-in providers and greyed out. Pressing enter on one starts that provider's terminal sign-in (the same flow as /login <id>). When sign-in succeeds, the picker reopens on that provider's models with the same "tab defaults" setting.

Agent

• Each advertised terminal sign-in method carries a kit/provider field in its _meta, naming the provider it signs in to.
• The session's model catalog is built once when the session opens. It is now rebuilt when the set of providers with credentials changes, so the TUI's refresh after sign-in returns the new provider's models. Before this, those models only appeared in a new session.

TUI

• A provider counts as signed in when the agent's catalog has a group for it, even if its model list came back empty. Providers that are already signed in are never offered sign-in again.
• Sign-in rows appear only after the agent has sent a catalog, so they don't show before the session opens.
• Sign-in from the picker waits until the agent is idle, like /login and model switches.
• /model never opens an empty picker.
• A selected greyed-out row keeps a dimmed version of the selection highlight. The footer reads enter sign in while a greyed-out row is selected.
• Sign-in methods are only advertised for a local agent, so with --remote the picker shows the signed-in providers as before.
• The /model section of docs/user/tui-and-sessions.md describes the new behaviour.

Demo

Testing

• mise run lint
• cargo test --lib: 2001 passed. Two shell tests fail locally, and they also fail on main: a shell startup file on the test machine prints a warning into their captured stderr. plugins::tests::system_git_runner_disables_configured_askpass_* was skipped because it hangs locally waiting on git. This PR doesn't touch the shell, git or plugin code.
• New tests cover:
  • the kit/provider field on sign-in methods
  • catalog rebuild detection after sign-in and sign-out
  • order of signed-in and greyed-out providers, and sign-in on enter
  • reopening the provider's models with the same defaults setting after sign-in
  • no reopen after a failed sign-in
  • signed-in providers with no models are not offered sign-in
  • sign-in waits for a running turn
  • sign-in rows only appear once a catalog is known
  • the footer text in the rendered picker

🤖 Generated with Claude Code

[kit-code-agent]

The model picker conflates an unavailable Anthropic model catalog with missing credentials, offering sign-in to an already credentialed user.

_{Took 11 min}

[kit-code-agent]

One limited issue remains: a credentialed provider with failed model discovery opens an unexplained empty model page.

_{Took 11 min}

[kit-code-agent]

No issues found. The changes look good to merge.

_{Took 8 min 3 sec}