v1.1.7 (3172bef, arrived via the master merge) strips mouse-tracking DECSET
sequences from claude/codex/gemini output so the wheel keeps scrolling
scrollback. Side effect: the browser xterm's mouseTrackingMode is permanently
'none' for those sessions, and the mobile touchend tap branch gates its
synthetic click on exactly that mode — so tap-to-position-cursor silently died.
Fix: when tracking reads 'none' but the session mode is one the server strips
(claude/codex/gemini — the PTY-side TUI still has tracking ON), encode the SGR
press+release report directly from the touch point and send it to the PTY,
bypassing xterm's mouse encoder. No DOM click is dispatched, so xterm's local
selection cannot trigger either.
Tests: 3 new cases in test/terminal-touch-tap.test.ts (SGR encoding, grid
clamping, shell-mode exclusion); verified E2E via Playwright iPhone emulation
against both a stripped-stream instance and the production bundle.