Remove the State enum (StateNew, StateNotAuthenticated, etc.) from
controlclient and replace it with two explicit boolean fields:
- LoginFinished: indicates successful authentication
- Synced: indicates we've received at least one netmap
This makes the state more composable and easier to reason about, as
multiple conditions can be true independently rather than being
encoded in a single enum value.
The State enum was originally intended as the state machine for the
whole client, but that abstraction moved to ipn.Backend long ago.
This change continues moving away from the legacy state machine by
representing state as a combination of independent facts.
Also adds test helpers in ipnlocal that check independent, observable
facts (hasValidNetMap, needsLogin, etc.) rather than relying on
derived state enums, making tests more robust.
Updates #12639
Signed-off-by: James Tucker <james@tailscale.com>
James Tucker
a96ef432cf