feat(input): Ctrl+scroll changes font size#77
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Holding Ctrl while scrolling the mouse wheel now zooms the active pane's font size (up = bigger, down = smaller) via the existing change_font_size helper, taking priority over mouse reporting and viewport scrolling.
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Summary
Holding Ctrl while scrolling the mouse wheel now changes the active pane's font size (scroll up = bigger, scroll down = smaller) instead of scrolling the viewport. This matches common terminal zoom behavior and reuses the existing font-size machinery.
Changes
src/app_event.rs:handle_mouse_wheelnow checksself.modifiers.state().control_key()first; when Ctrl is held it calls the existingchange_font_sizehelper (+1/-1) and returns, taking priority over both the mouse-reporting (>=1000) path and viewport scrolling.src/main_test.rs: added tests that Ctrl+wheel-up increases and Ctrl+wheel-down decreases the active pane's font size, and that a wheel event without Ctrl leaves the font size unchanged.CHANGELOG.md,README.md,doc/SPEC.md: documented the new Ctrl+scroll shortcut alongside the existing font-size shortcuts.How to test
cargo test— the two new tests insrc/main.rs(ctrl_wheel_up_increases_font_and_down_decreases,wheel_without_ctrl_leaves_font_untouched) pass.