Gather/craft start inventory and skill GETs in parallel with quest-progress;
post-completion _refresh_economy_hud was dropped when those clients were _busy.
Match quest_progress_client pending-sync flush so a follow-up GET runs after
the in-flight request completes.
Await async assert_signal calls and match emitted payload args with any()
where tests only care that the signal fired, preventing orphaned 2s timeouts
that surfaced as false failures in later suites (e.g. hotbar_loadout_client_test).
VinPropane