feat: tighten security warnings

feat: harden config and export flows

fix: lock dashboard viewport

fix: stabilize dashboard viewport

chore: prepare 0.6.5 release

feat: add account health checks

fix: change all cyan borders to gray for minimalist UI

fix: update settings tab to minimalist white/gray colors

feat: keep key model columns visible and align settings palette

feat: redesign dashboard with model columns, progress bars, time and percentage display

feat: redesign dashboard with detailed model display and minimalist color scheme

fix: convert && patterns to ternary for loadingStep and message in Dashboard

fix: empty string rendering bug in DashboardView rate limit time display

fix: prevent empty string render in ActionPalette, ImportModal, ExportModal, FileBrowser

fix: prevent empty string render in loading indicator