lib/wheelReports.ts SCROLL_SPEED = 0.7: a touchpad's travel is scaled, and a
wheel notch's reports are carried as a fraction (rounded, so the first notch
still moves; reset when the direction turns). xterm's own scrollback gets the
same scrollSensitivity.
xterm.js sends one wheel report per event whatever its size and damps a
touchpad's pixel deltas x0.3, so a swipe crawled. With mouse tracking on,
TerminalView now sends the SGR reports itself (lib/wheelReports.ts): one
per 5 rows of travel (what one report scrolls in a Claude pane), the
remainder carried between events, at least one per wheel notch, at the
pointer's cell with xterm's modifier bits.
nntrivi2001