Adds the UNCORRECTED RDS deviation figure (raw) to the app's own ADV RDS panel, beside avg and peak. It appears only when it differs from avg by more than 2%. Works with a local dongle — no server needed.
Build 494 had this in the web client only, so it could not show raw to anyone using the app directly.
Also in this build:
- DAB no longer aborts the radio process on RTL dongles (libusb ordering fix)
- RDS DEV stands down at low S/N instead of printing impossible values labelled "nominal"
- Health icons blend through the colour range rather than snapping green/amber/red