Add clipboard, idle timeouts, night light, bluetooth, and waybar improvements

- Add cliphist clipboard manager with wofi picker (Mod+Shift+C)
- Add wl-paste watch for clipboard history
- Add swayidle idle timeouts: blank at 5min, lock at 10min
- Add blueman-applet autostart (bluetooth tray)
- Add wlsunset night light for Vancouver (49.2N, 123.1W)
- Add clipboard-picker script and symlink in install.sh
- Waybar: add battery charging format, warning/critical states, tray config
- Waybar CSS: add warning (yellow) and critical (red) battery colors

niri/config.kdl

@@ -17,7 +17,13 @@ spawn-at-startup "mako"
 spawn-at-startup "swww-daemon"
 spawn-at-startup "nm-applet" "--indicator"
 spawn-at-startup "polkit-gnome-authentication-agent-1"
-spawn-at-startup "swayidle" "-w" "before-sleep" "swaylock -f -c 000000"
+spawn-at-startup "swayidle" "-w"
+    "timeout" "300" "niri msg action power-off-monitors"
+    "timeout" "600" "swaylock -f -c 000000"
+    "before-sleep" "swaylock -f -c 000000"
+spawn-at-startup "wl-paste" "--watch" "cliphist" "store"
+spawn-at-startup "blueman-applet"
+spawn-at-startup "wlsunset" "-l" "49.2" "-L" "-123.1"
 
 binds {
     Mod+Q repeat=false { close-window; }
@@ -41,6 +47,7 @@ binds {
 
     Mod+Shift+E { spawn "swaylock" "-f" "-c" "000000"; }
     Mod+Shift+P { spawn "powermenu"; }
+    Mod+Shift+C { spawn "clipboard-picker"; }
     Mod+Shift+X { quit; }
 
     XF86AudioRaiseVolume allow-when-locked=true { spawn "pamixer" "-i" "5"; }