feat: detect banned accounts and show status in dashboard (#142)

feat: bulk account import/export with selective export (#82)

feat: display secondary rate limit window (weekly cap) in dashboard

fix: update checker shows correct status + version display + dark mode fixes

feat: add proxy pool for per-account proxy routing

refactor: extract startServer() + path abstraction for Electron reuse

feat: add per-window usage counters with time-driven reset

refactor: remove dead code, unused config, and fix type violations

fix: delete button always visible and not overlapped by status badge

feat: migrate dashboard to Preact + Vite