Addresses three points of feedback on the Tuner Genius work:
- Meter sizes: the amplifier meters were rendered `compact` (smaller than the
FlexRadio meters). Dropped compact so the amp, tuner and Flex meters are all
the same size.
- Collapsible cards: the FlexRadio panel Card, AmpCard and TunerCard now fold
from a chevron in the header, state persisted per card (opslog.cardOpen.*).
The amplifier cards share the "amplifier" collapse key across their SPE/ACOM/
PGXL variants so folding sticks regardless of the shown model.
- TGXL responsiveness: the tuner's device poll dropped 1500ms→400ms and the
three UI pollers 1500ms→500ms, so the SWR/power meters track TX without the
2–3s lag behind the amplifier the user saw.
- Icon: the Tuner Genius top-bar toggle used Zap, same as the CW keyer — changed
the tuner's icon (top bar + widget + card) to Gauge so the two are distinct.