feat(night-mode): 🌙 Switch from wlsunset to hyprsunset and add temperature control

- Replace wlsunset with hyprsunset for better Hyprland integration
- Add temperature adjustment functions with scroll support in Waybar
- Implement persistent temperature storage in `~/.cache/hyprsunset_temp`
- Add temperature bounds (2000K-6500K) with 100K increment/decrement
steps
- Update NixOS configuration to include hyprsunset package

Fixes temperature persistence and improves Hyprland compatibility

home/.config/fish/functions/check_night_mode.fish

@@ -1,5 +1,5 @@
 function check_night_mode
-    set target_process wlsunset
+    set target_process hyprsunset
 
     if pgrep $target_process >/dev/null
         echo "{ \"text\":\"󱩌\", \"tooltip\": \"night-mode <span color='#a6da95'>on</span>\", \"class\": \"on\" }"

home/.config/fish/functions/night_mode_temp_down.fish

@@ -0,0 +1,27 @@
+function night_mode_temp_down
+    set target_process hyprsunset
+    set temp_file ~/.cache/hyprsunset_temp
+    set decrement 100
+
+    if not pgrep $target_process >/dev/null
+        return
+    end
+
+    if test -f $temp_file
+        set current_temp (cat $temp_file)
+    else
+        set current_temp 4000
+    end
+
+    set new_temp (math $current_temp - $decrement)
+
+    if test $new_temp -lt 2000
+        set new_temp 2000
+    end
+
+    echo $new_temp >$temp_file
+
+    killall -s SIGINT $target_process
+    sleep 0.5
+    $target_process -t $new_temp
+end

home/.config/fish/functions/night_mode_temp_up.fish

@@ -0,0 +1,27 @@
+function night_mode_temp_up
+    set target_process hyprsunset
+    set temp_file ~/.cache/hyprsunset_temp
+    set increment 100
+
+    if not pgrep $target_process >/dev/null
+        return
+    end
+
+    if test -f $temp_file
+        set current_temp (cat $temp_file)
+    else
+        set current_temp 4000
+    end
+
+    set new_temp (math $current_temp + $increment)
+
+    if test $new_temp -gt 6500
+        set new_temp 6500
+    end
+
+    echo $new_temp >$temp_file
+
+    killall -s SIGINT $target_process
+    sleep 0.5
+    $target_process -t $new_temp
+end

home/.config/fish/functions/night_mode_toggle.fish

@@ -1,9 +1,16 @@
 function night_mode_toggle
-    set target_process wlsunset
+    set target_process hyprsunset
+    set temp_file ~/.cache/hyprsunset_temp
 
     if pgrep $target_process >/dev/null
-        killall -s SIGINT wlsunset
+        killall -s SIGINT $target_process
     else
-        wlsunset
+        if test -f $temp_file
+            set temp (cat $temp_file)
+        else
+            set temp 4000
+            echo $temp >$temp_file
+        end
+        $target_process -t $temp
     end
 end

home/.config/waybar/config

@@ -223,7 +223,10 @@
 
     "custom/night_mode": {
         "return-type": "json",
-        "interval": 1,
+        "restart-interval": 1,
+        "on-scroll-down": "fish -c night_mode_temp_up",
+        "on-scroll-up": "fish -c night_mode_temp_down",
+        "smooth-scrolling-threshold": 2.0,
         "exec": "fish -c check_night_mode",
         "on-click": "fish -c night_mode_toggle",
     },