The release profile builds with panic = "abort", so a panic in any helper
thread took the whole dashboard down:
- backlight: WalkDir yields /sys/class/backlight itself, so detect() was
always true and new() picked the class dir as the device, then panicked
reading brightness. Use min_depth(1) and tolerate read errors.
- battery: detect() only checked that UPower's DisplayDevice answered,
which it does on every machine; use IsPresent. The monitor thread now
returns an error instead of unwrapping, and publishes its first reading.
- pulseaudio: a failed connection panicked ("damn"); clicks before the
first sink query unwrapped a None channel map. Both are now handled, and
the connect loop no longer busy-spins.
- bar widget: don't underflow when narrower than the label column.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
