perf: instant proxy mode switching via optimistic UI update

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

feat: proxy pool add form with separate protocol/host/port/auth fields

fix: proxy pool review fixes — security, validation, robustness

feat: add proxy pool for per-account proxy routing

feat: GitHub Star badge + check-for-updates in dashboard header

fix: collapsible model dropdown, default to gpt-5.4, remove legacy gpt-5

feat: add gpt-5.4 + codex-spark support, matrix model selector, extended reasoning efforts

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

fix: window counter review issues — opacity modifier, catch-up spam, rounding

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

feat: add manual refresh button with timestamp to account list

chore: deduplicate model selector, auto-extract chromium version, harden update pipeline

feat: dynamic model list fetching from Codex backend (#9)

feat: Claude Code quick setup — dashboard card, model aliases & README

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

fix: useStatus not refreshing after first OAuth login

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

fix: Anthropic/Gemini code examples now follow selected model

feat: migrate dashboard to Preact + Vite