feat(config): switch Goliath launch to mosh and tighten key repeat settings

dot_config/hypr/bindings.lua

@@ -196,7 +196,11 @@ o.bind("SUPER + CTRL + ALT + W", "tldraw", "omarchy-launch-or-focus tldraw \"gtk
 o.bind("SUPER + CTRL + ALT + SPACE", "Sticky notes", "omarchy-launch-or-focus sticky \"gtk-launch io.github.faridjaff.StickyNotesCanvas\"")
 
 hl.unbind("SUPER + SHIFT + G") -- was: Signal
-o.bind("SUPER + SHIFT + G", "Goliath", { launch = "kitty --title=goliath ssh -t goliath tmux new-session -A -s main" })
+-- The ssh/mosh command and tmux keymaps live in ~/.config/kitty/goliath.conf
+-- (kitty cannot take --config from a `launch` action, hence a separate kitty
+-- process, same trick as SUPER + T / SUPER + A). kitty-goliath is the app-id
+-- looknfeel.lua's terminal blur rule expects.
+o.bind("SUPER + SHIFT + G", "Goliath", { launch = "kitty --class=kitty-goliath --title=goliath --config ~/.config/kitty/goliath.conf" })
 
 -- ─── Screenshots ────────────────────────────────────────────────────────────
 

dot_config/hypr/input.lua

@@ -1,6 +1,26 @@
 -- 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.
+--
+-- 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).
+-- 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,
+  },
+})
+
 -- Keyboard layout and options.
 -- See https://wiki.hypr.land/Configuring/Basics/Variables/#input
 -- hl.config({

dot_config/kitty/goliath.conf

@@ -1,7 +1,15 @@
-include ssh.conf
 listen_on unix:@kitty-goliath
-# open straight into goliath's tmux
-shell ssh -t goliath tmux new-session -A -s main
+# open straight into goliath's tmux, over mosh: the UDP session survives
+# suspend, roaming and dead links, and reconnects itself. mosh-server allocates
+# the remote pty, so there is no `ssh -t` equivalent to pass. Caveat: mosh runs
+# its bootstrap ssh with `-S none`, so it can never ride a ControlMaster --
+# non-interactive key auth to goliath must work or every launch prompts for a
+# password. Needs mosh on both ends and UDP 60000-61000 open on goliath.
+# mosh also rewrites TERM to xterm-256color (it only forwards a color count),
+# so xterm-kitty-only capabilities (undercurl, ...) are gone inside the session.
+# MOSH_TITLE_NOPREFIX drops mosh's "[mosh] " window-title prefix.
+env MOSH_TITLE_NOPREFIX=1
+shell mosh goliath -- tmux new-session -A -s main
 # structural keys forward to tmux (prefix C-b = \x02)
 map super+w     send_text all \x02x
 map super+t     send_text all \x02%

dot_config/niri/exact_config.d/70-binds.kdl

@@ -20,7 +20,8 @@ binds {
     Mod+Ctrl+R { spawn "noctalia" "msg" "plugin" "prdlk/ostt:recorder" "focused" "toggle"; }
     
     // ii Region tools
-    Mod+Shift+G { spawn "kitty" "--title=goliath" "ssh" "-t" "goliath" "tmux" "new-session" "-A" "-s" "main"; }
+    // Goliath: mosh + tmux and the tmux keymaps live in ~/.config/kitty/goliath.conf
+    Mod+Shift+G { spawn-sh "kitty --class=kitty-goliath --title=goliath --config ~/.config/kitty/goliath.conf"; }
     Mod+S            { spawn "dot-screenshot" "region"; }
     Mod+Shift+S      { spawn "dot-screenshot" "window"; }
     Mod+Ctrl+S       { spawn "dot-screenshot" "monitor-focused"; }