New module status/js/auth-gate.js owns the Caddy ?auth=required flow. On load it queries GET /api/v1/auth/login/methods to discover which AuthProviders are configured. Three branches: * 0 providers → legacy TOTP overlay (delegates to window._showTotpOverlay) * 1 provider (totp only) → legacy TOTP overlay (delegates, no UI change) * 2+ providers → provider selector with 'Sign in with …' buttons Email provider challenge is a single email input + 'Send sign-in link' button. POST to /api/v1/auth/login/email/initiate. On success the UI shows 'check the server logs' message if deliveredVia == 'dev-console' (production hosts without SMTP fall back gracefully) or 'check your inbox' when SMTP is configured. TOTP button just calls window.location.reload() — simplest path because totp-auth.js wires the 6-digit input handlers at module-load time, and a reload re-runs all IIFEs with the original markup. Same behavior as the legacy single-provider path. Coordination with totp-auth.js: auth-gate.js sets window.__dc_049_handled = true at IIFE entry. totp-auth.js's top-level ?auth=required check reads that flag and skips its own UI when set — eliminates the flicker in multi-provider installs. Single-provider installs still work because the legacy code path is unchanged (auth-gate delegates to it). Bundle order in build.js: auth-gate.js BEFORE totp-auth.js so the flag is set in time. Webpack-style bundle markers verified offline: __dc_049_handled, auth-gate-email-input, provider-btn, _showAuthGate, totp_redirect all present in dist/core.js (now 20 files, 248KB raw / 153KB min). New SW cache hash dashcaddy-shell-680e230383 (was 743f9c17b0).