horizontal scroll for file panes (terminals wrap at pty width — nothing to scroll): pane.hscroll cuts content columns after the lineno gutter in bodyText (post edit-splice, so typed runs shift with the text), no scrollbar. Drivers: horizontal wheel (new wheel_left/right Mouse.Buttons, SGR 66/67 via vaxis on the tty, SDL wheel.x on the gui, ±4 cols, clamped at 0, right overscroll allowed) and keyboard movement — ensureCursorVisible grew the horizontal mirror of the scrolloff reconcile, so $ pulls the view right with 3 columns of margin and 0 reels it home; the wheel never moves the cursor. Shifted alongside: syntax recolor pass, modal cursor paint (hidden when off-view), vsel highlight, click->content-col mapping, cursorWordSel. Byte columns like the rest of the file-pane code. New hscroll.snap golden: wheel shift with fixed gutter, left clamp, $ margin follow, 0 home. 30/30.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/tty.zig b/src/tty.zig
index c62ace3d..f503303a 100644
--- a/src/tty.zig
+++ b/src/tty.zig
@@ -163,6 +163,8 @@ pub fn run(init: std.process.Init, opts: pardes.Options) !void {
                         .right => .right,
                         .wheel_up => .wheel_up,
                         .wheel_down => .wheel_down,
+                        .wheel_left => .wheel_left,
+                        .wheel_right => .wheel_right,
                         .none => .none, // button-less motion: hover tracking
                         else => null,
                     };