Replace 261-line custom IIFE with SDK browser bundle import.
Keep localStorage migration from old rwallet_encryptid key.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add requireAuth() gate to all visualization pages. Unauthenticated users
are redirected to the home page with a login prompt and auto-redirect
back after signing in.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add passkey sign-in to the static wallet explorer:
- Add js/encryptid.js with WebAuthn registration/authentication
- Add auth button to hero section of index.html
- Persists auth state in localStorage
- No backend required — all client-side
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>