PERF.49 Website: every signed-in page view runs the account-menu queries (5 to 6 statements; 12 Licenses::forOrg calls on /account)

navbar.inc:36 → Organizations::listedFor → forUser (Organizations.php:181, a correlated member COUNT), then per workspace Licenses::summary → forOrg (two statements), Licenses::seatFor and StoragePlans::inForce: 5 to 6 statements and about 1.5 ms on each of the 61 pages profiled, 12 forOrg calls on /account. With one workspace per account this is small; with teams it is three statements per workspace per page. Fix: compute listedFor once per request (static memo) and keep the menu's result in $_SESSION with a 60 s stamp, invalidated by Licenses::assign/unassign/grant and Organizations::addMember/removeMember (or the touched() hook the dashboard already uses).