New dedicated pixel art sprites for ADS-B emitter categories B2
(lighter-than-air → balloon), B1 (glider/sailplane → glider), and
B6 (UAV → uav), replacing the previous fallback to smallProp. Adds
an admin Sprites tab for previewing and uploading replacement PNGs
for all 9 aircraft sprite types.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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>
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