The shared legacy password is still needed for boards on pre-HMAC
firmware, but it was accepted for any username. Now:
- controlled by MQTT_ALLOW_LEGACY_PASSWORD (config.py, default true;
documented in .env.example) so it can be switched off without a deploy,
- only accepted for device-shaped usernames (uppercase alphanumeric
segments joined by "-", optional "-kiosk"), never for app_ users or
any other shape,
- every successful legacy login is logged at WARNING with the username,
rate-limited to once per username per hour, so the boards still
depending on it are visible before the flag is turned off.
HMAC auth is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ESP32 devices can't spare the 40KB+ RAM a TLS client needs, so Firebase
Storage's HTTPS-only download URLs were blocking melody downloads. Binaries
are now written to local disk (./data/melody_binaries) and served through a
new unauthenticated /api/melodies/download/{pid} route, exposed publicly on
a separate melodies.bellsystems.net vhost (plain HTTP, no TLS) so the main
console domain can stay HTTPS-only with no exceptions. Preview audio still
uses Firebase Storage since it's only ever fetched by the HTTPS admin UI.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
bonaminandClaude Opus 5.5