feat(sway): non-XF86 alternatives for media/hardware keybinds

Every sway action that was reachable only via an XF86 keysym now has
a Super-based alternative, so all bindings work on keyboards without
a multimedia row.

Frequent (direct binds, vim-direction layout on Super+Ctrl):
  Super+Ctrl+k/j      = volume +/-
  Super+Ctrl+space    = play/pause
  Super+Ctrl+l/h      = next/previous track
  Super+Ctrl+]/[      = brightness +/-

Rare (submode 'system' via Super+x; one letter runs and exits):
  b bluetooth · w wifi · r rfkill · s suspend · d display
  v pulsemixer · k KEYBINDS viewer · m mako history
  Escape/Return exits

Existing Super+m / Super+Shift+m / Super+Shift+s already covered
mic-mute / sink-mute / lock; XF86 binds untouched so the laptop's
Fn-row keeps working. KEYBINDS.md updated.

2 files changed, 51 insertions, 0 deletions

diff --git a/KEYBINDS.md b/KEYBINDS.md
index 0bbcd50..128e17a 100644
--- a/KEYBINDS.md
+++ b/KEYBINDS.md
@@ -307,15 +307,22 @@ Mod key: `Super` (Mod4). Only personal additions beyond sway defaults listed.
 | Key                     | Action                                                        |
 | ----------------------- | ------------------------------------------------------------- |
 | `XF86AudioRaiseVolume`  | Volume +5%                                                    |
+| `Super+Ctrl+k`          | Volume +5% (non-XF86 alt)                                     |
 | `XF86AudioLowerVolume`  | Volume -5%                                                    |
+| `Super+Ctrl+j`          | Volume -5% (non-XF86 alt)                                     |
 | `XF86AudioMute`         | Mute toggle                                                   |
 | `Super+m`               | Mic mute toggle                                               |
 | `Super+Shift+m`         | Speaker mute toggle                                           |
 | `XF86AudioPlay`         | Play/pause                                                    |
+| `Super+Ctrl+space`      | Play/pause (non-XF86 alt)                                     |
 | `XF86AudioNext`         | Next track                                                    |
+| `Super+Ctrl+l`          | Next track (non-XF86 alt)                                     |
 | `XF86AudioPrev`         | Previous track                                                |
+| `Super+Ctrl+h`          | Previous track (non-XF86 alt)                                 |
 | `XF86MonBrightnessUp`   | Brightness +5% (brightnessctl)                                |
+| `Super+Ctrl+]`          | Brightness +5% (non-XF86 alt)                                 |
 | `XF86MonBrightnessDown` | Brightness -5% (brightnessctl)                                |
+| `Super+Ctrl+[`          | Brightness -5% (non-XF86 alt)                                 |
 | `XF86AudioMicMute`      | Mic mute toggle                                               |
 | `XF86Bluetooth`         | Bluetooth power toggle (bluetoothctl)                         |
 | `XF86ScreenSaver`       | Lock screen + pause media (same as Super+Shift+s)             |
@@ -349,6 +356,25 @@ Mod key: `Super` (Mod4). Only personal additions beyond sway defaults listed.
 | `Super+z` then `r`      | Scan QR via webcam, copy to clipboard (rqr)                   |
 | `Super+t`               | Toggle Thunderbird (tiled on current workspace)               |
 
+### System submode (sway/config)
+
+`Super+x` enters `mode "system"` (mode name shown in waybar). One letter
+runs the action and exits the mode; `Escape` or `Return` exits without
+acting. Provides non-XF86 access to the rare hardware toggles and TUI
+launchers.
+
+| In `system` mode  | XF86 equivalent | Action                      |
+| ----------------- | --------------- | --------------------------- |
+| `b`               | `XF86Bluetooth` | Bluetooth power toggle      |
+| `w`               | `XF86WLAN`      | Wi-Fi toggle (rfkill wifi)  |
+| `r`               | `XF86RFKill`    | Toggle all radios (rfkill)  |
+| `s`               | `XF86Sleep`     | Suspend (systemctl suspend) |
+| `d`               | `XF86Display`   | Display mode toggle         |
+| `v`               | `XF86Tools`     | Floating pulsemixer         |
+| `k`               | `XF86Keyboard`  | Floating glow KEYBINDS.md   |
+| `m`               | `XF86Favorites` | mako notification history   |
+| `Escape`/`Return` | —               | exit submode                |
+
 ## Typing / Input
 
 Layout: `us(altgr-intl)` with Caps→Esc and Right Ctrl as Compose
diff --git a/dot_config/sway/config b/dot_config/sway/config
index 9b72031..109a25e 100644
--- a/dot_config/sway/config
+++ b/dot_config/sway/config
@@ -139,6 +139,8 @@ bindsym $mod+Shift+Tab workspace prev_on_output
 bindsym XF86AudioRaiseVolume exec pactl set-sink-volume @DEFAULT_SINK@ +5%
 bindsym XF86AudioLowerVolume exec pactl set-sink-volume @DEFAULT_SINK@ -5%
 bindsym XF86AudioMute exec pactl set-sink-mute @DEFAULT_SINK@ toggle
+bindsym $mod+Ctrl+k exec pactl set-sink-volume @DEFAULT_SINK@ +5%
+bindsym $mod+Ctrl+j exec pactl set-sink-volume @DEFAULT_SINK@ -5%
 bindsym $mod+Shift+m exec pactl set-sink-mute @DEFAULT_SINK@ toggle
 bindsym $mod+m exec pactl set-source-mute @DEFAULT_SOURCE@ toggle
 
@@ -146,10 +148,15 @@ bindsym $mod+m exec pactl set-source-mute @DEFAULT_SOURCE@ toggle
 bindsym XF86AudioPlay exec playerctl play-pause
 bindsym XF86AudioNext exec playerctl next
 bindsym XF86AudioPrev exec playerctl previous
+bindsym $mod+Ctrl+space exec playerctl play-pause
+bindsym $mod+Ctrl+l exec playerctl next
+bindsym $mod+Ctrl+h exec playerctl previous
 
 # Brightness
 bindsym XF86MonBrightnessUp exec brightnessctl set +5%
 bindsym XF86MonBrightnessDown exec brightnessctl set 5%-
+bindsym $mod+Ctrl+bracketright exec brightnessctl set +5%
+bindsym $mod+Ctrl+bracketleft exec brightnessctl set 5%-
 
 # ThinkPad multimedia keys
 bindsym XF86AudioMicMute exec pactl set-source-mute @DEFAULT_SOURCE@ toggle
@@ -205,6 +212,24 @@ mode "qr" {
 }
 bindsym $mod+z mode "qr"
 
+# System / hardware submode — non-XF86 alternatives for the rarely used
+# hardware toggles and TUI launchers above. Enter with Super+x; mnemonic
+# letters (b=bluetooth, w=wifi, r=rfkill, s=sleep, d=display,
+# v=volume-mixer, k=keybinds, m=mako-history).
+mode "system" {
+    bindsym b exec ~/.config/sway/bt-toggle.sh, mode "default"
+    bindsym w exec ~/.config/waybar/wifi-toggle.sh, mode "default"
+    bindsym r exec rfkill toggle all, mode "default"
+    bindsym s exec systemctl suspend, mode "default"
+    bindsym d exec ~/.config/sway/display-toggle.sh, mode "default"
+    bindsym v exec $term --class=floating -e pulsemixer, mode "default"
+    bindsym k exec $term --class=floating -e glow -p ~/dotfiles/KEYBINDS.md, mode "default"
+    bindsym m exec ~/.config/waybar/mako-history.py, mode "default"
+    bindsym Escape mode "default"
+    bindsym Return mode "default"
+}
+bindsym $mod+x mode "system"
+
 # Thunderbird toggle: main window stashed in the scratchpad; this pulls it to
 # the current workspace (tiled) or sends it back. Child windows (compose,
 # viewer, calendar, prefs) tile normally wherever Thunderbird spawns them.