refactor(config): simplify input config and document key repeat behavior

dot_config/hypr/input.lua

@@ -1,25 +1,19 @@
 -- Keep only your personal input overrides here. Uncommented settings below
 -- replace Omarchy's defaults.
 
--- Key repeat. Repeat is synthesized by the compositor (wl_keyboard.repeat_info
--- -> the client repeats locally), so this costs nothing on the wireless link.
--- Omarchy's 250ms / 40Hz already beats Hyprland's 600 / 25; tighten it further
--- so held keys (backspace, arrows, vim motions) start and stream sooner.
+-- Key repeat: Omarchy's 250ms / 40Hz is left alone. 200 / 50 was tried and
+-- felt too fast; the "typing lag" it was meant to fix turned out to be the
+-- Pilot W-Corne's firmware (55d4:0461, Vial/QMK over a 2.4GHz dongle)
+-- resolving its MT(LGUI,SPC) / MT(LCTL,SPC) thumb keys as holds the moment
+-- another key went down. Fixed on the board itself: Vial QMK Settings ->
+-- Tap-Hold -> "Ignore Mod Tap Interrupt" (qsid 8 bit 1), tapping term 200ms.
 --
--- Everything else in the keystroke path was checked and is already optimal for
--- the Pilot W-Corne (55d4:0461, Vial/QMK over a 2.4GHz dongle): the dongle
--- advertises bInterval=1 (1000Hz polling), udev pins power/control=on (no USB
--- autosuspend), nothing polls its raw-HID interface, WiFi sits on 5GHz, and
--- render:new_render_scheduling is off (no triple-buffer frame of latency).
+-- The rest of the keystroke path was checked and is already optimal: the
+-- dongle advertises bInterval=1 (1000Hz polling), udev pins power/control=on
+-- (no USB autosuspend), nothing polls its raw-HID interface, WiFi sits on
+-- 5GHz, and render:new_render_scheduling is off (no triple-buffer frame).
 -- Remaining latency is the 60Hz Studio Display refresh and the fcitx5
--- input-method hop (see omarchy-fcitx5.service), neither of which is an
--- input option.
-hl.config({
-  input = {
-    repeat_delay = 200,
-    repeat_rate = 50,
-  },
-})
+-- input-method hop (see omarchy-fcitx5.service), neither an input option.
 
 -- Keyboard layout and options.
 -- See https://wiki.hypr.land/Configuring/Basics/Variables/#input