Channel chip (ch2) was inline with the label, stealing horizontal
space and causing label truncation ('Temper...'). Now positioned as
a tiny 9px label anchored bottom-right of the tile, giving the full
width to the metric label and value.
Core telemetry fields (temperature, humidity, pressure, voltage) were
shown twice: once from the ContactTelemetry top-level fields and again
from extraSensorData channel-keyed entries (e.g. temperature_2).
Now skips extraSensorData keys that are already represented by core
telemetry cards.
Replace hardcoded English strings in 32 Dart source files with l10n
references. Covers settings labels, UI actions, map/SAR features,
device config, notifications, profiles, spectrum scan, and status
messages for sl, de, hr, pl, es, fr, it, el, ru, tr, uk, zh, pt.
