Load the whole config again under Hyprland 0.57

Hyprland 0.57 refuses a bind on a bare modifier and an empty input:scroll_method. The switcher's Super-release commit now binds Super_L and Super_R, which also brings back every bind below it in keybinds.lua. An empty scroll method is left unwritten, so libinput still picks per device.

config/dot/hypr/input.lua

@@ -8,6 +8,14 @@
 local prefs = require("prefs")
 local actions = require("actions")
 
+-- Empty means "let libinput pick per device". Hyprland 0.57 rejects "" for
+-- this option, so empty is expressed by not writing it at all: nil drops the
+-- key from the table below and the option stays at its unset default.
+local scroll_method = prefs.get("scrollMethod", "")
+if scroll_method == "" then
+    scroll_method = nil
+end
+
 hl.config({
     input = {
         kb_layout  = prefs.get("keyboardLayout", "us"),
@@ -52,16 +60,12 @@ hl.config({
         scroll_factor  = prefs.get("scrollFactor", 1.0),
         left_handed    = prefs.get("leftHanded", false),
 
-        -- Empty is a value, not an omission: it is what `hyprctl getoption`
-        -- reports as "[[EMPTY]]" before anything writes the option, and it means
-        -- "let libinput pick per device" -- two fingers on a touchpad, the wheel
-        -- on a mouse. Writing it back explicitly is the same branch a stock
-        -- Hyprland takes, and it keeps the setting reversible: without an empty
-        -- choice in the schema there would be no way back from a scroll method
-        -- once one was picked. Settings offers 2fg / edge / on_button_down /
+        -- Empty (omitted, see above) is what `hyprctl getoption` reports as
+        -- "[[EMPTY]]": libinput picks per device -- two fingers on a touchpad,
+        -- the wheel on a mouse. Settings offers 2fg / edge / on_button_down /
         -- no_scroll alongside it, the four words the option's own description
         -- names (it publishes no map).
-        scroll_method = prefs.get("scrollMethod", ""),
+        scroll_method = scroll_method,
 
         -- Only consulted while scroll_method is on_button_down. 0 means the
         -- device's own middle button.