The watch(activeTab) handler loads tab data on navigation, but not on
initial mount when localStorage restores a tab. Three more gaps:
- briefing: was inside the isAdmin guard — non-admin users who last
visited the Briefing tab would see an empty form
- users: no onMounted equivalent — admin user list never loaded
- logs: no onMounted equivalent — admin log viewer never loaded
Moves briefing outside the admin guard and adds users/logs inside it.
bvandeusen
2b2e5c666a