* perf(model): optimize model tab load speed with two-phase fetch and loadQuick * perf: optimize data loading across Config, System, Profiles, and Billing tabs * chore: remove leftover bottom nav references and unused updatePrimaryScreens * style: fix ktlint violations in Config/Profiles/Billing ViewModels - property/argument-list wrapping for async(...) calls - multiline-expression wrapping for async blocks - remove unused import in ConfigViewModel - break long error-message string literals to stay under 120 cols --------- Co-authored-by: M57 <Hy4ri@users.noreply.github.com>