The dashboard's activity chart flips to the app-wide direction (oldest
left, now against the right gutter; caption relabelled) and both screens
drop their private renderers for ui.braillechart. The Time Machine's SNR
band is now zero-anchored instead of min-scaled: readings hang below the
grey zero line by their actual depth (or rise above it), with a third
braille row buying back the swing resolution, and the heading quotes the
zero-folded scale so the label and drawing agree.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>