visit navigate timeout too tight at 10s for concurrent tests

[pinetops]

Problem

visit uses browsingContext.navigate with wait: "complete" and the default 10s send_command timeout. Under concurrent load (6 feature tests with 9+ browser tabs), the auth callback → redirect → LiveView mount chain can exceed 10s.

Passes most runs but fails intermittently (2 of 6 feature tests).

Suggestion

Either:

1. Increase navigate timeout to 30s (it's a page load, not an interaction)
2. Use wait: "interactive" instead of wait: "complete" — fires after DOM is ready, doesn't wait for all resources (fonts, images)
3. Make navigate timeout configurable via config :wallabidi, navigate_timeout: 30_000