22a3078af9
Implements credentialed admin panel and multi-step setup wizard so new
users can configure location, receivers, and preferences without editing
JSON files. Adds bcrypt password auth with session cookies, setup lockout
after first run, and expanded config schema with backward compatibility.
New files: admin/{html,css,js}, setup/{html,css,js}
Modified: server.py (auth, setup, admin APIs), index.html (dynamic title),
pixel-view.js (site/display config), requirements.txt (bcrypt),
config.json.example (full schema)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>