v0.48.1

Added

• The hardware gate checks that ESPHome firmware works, not only that
  it boots (workbench phase 4). A flash entry with functional: true
  builds its ESPHome image with WiFi, the native API and one GPIO
  switch; after the boot marker the new functional stage finds the
  device's address in its boot log, connects with aioesphomeapi,
  checks its name and entities, and switches the switch on and off over
  the API. aioesphomeapi is the new bench extra, installed in the
  -full image.

Fixed

• The functional stage says why a device's API did not answer. A
  timeout read "did not answer: " with nothing after it; it now gives
  the wait, and the row adds the WiFi signal the device logged, naming
  -85 dBm or weaker as too weak to hold a link. Found on the first
  covbench run, where the board joined at -97 dBm.

• An unreachable ESPHome dashboard ended the hardware gate with a
  traceback. The ESPHome image build let the dashboard client's error
  escape, so one bad dashboard lost the whole night's report. It is now
  a failed flash row for that framework and the run carries on.

• The header overflowed between 1536 and 1760px. With advanced mode
  on and unsaved changes, the group names and long labels that appeared
  at 1536px pushed the theme, settings and docs buttons off screen, and
  the "Unsaved changes" chip wrapped. The labels now appear from 1800px
  (the Design labels from 1366px) and the chip stays on one line. The
  ui-themes gate now sweeps 1280-1920px in that state.