feat(sway,waybar): scratch nvim+ipython binds; bolder VPN visuals

VPN module:
- Pango markup colours the text directly so up/down is visually
  unambiguous even without CSS classes (green shield up, dim
  strikethrough down)
- .down also gets a faint red background tint for at-a-glance scan

Sway:
- Super+Shift+t -> floating ghostty with nvim editing a fresh
  $XDG_RUNTIME_DIR/scratch-<epoch>.txt (auto-cleared on reboot via
  tmpfs)
- Super+c -> floating ghostty with ipython (quick calculator /
  python scratch)

KEYBINDS.md updated.

2 files changed, 6 insertions, 4 deletions

diff --git a/dot_config/waybar/executable_vpn-status.sh b/dot_config/waybar/executable_vpn-status.sh
index 37fea84..3e6faba 100644
--- a/dot_config/waybar/executable_vpn-status.sh
+++ b/dot_config/waybar/executable_vpn-status.sh
@@ -1,12 +1,13 @@
 #!/bin/sh
 # Waybar custom/vpn module: report whether the wireguard interface
-# (managed by systemd-networkd) is admin-up. Output is a single line of
-# JSON so waybar can style it via the .up / .down classes.
+# (managed by systemd-networkd) is admin-up. Pango markup makes the
+# state visually unambiguous (green shield up, red strikethrough down)
+# even before CSS classes are taken into account.
 
 iface=hodor
 
 if ip link show "$iface" 2>/dev/null | grep -qE '<[^>]*\<UP\>'; then
-  printf '{"text":"VPN","class":"up","tooltip":"%s up"}\n' "$iface"
+  printf '{"text":"<span color=\\"#b8bb26\\">󰒃 VPN</span>","class":"up","tooltip":"%s up — click to disconnect"}\n' "$iface"
 else
-  printf '{"text":"VPN","class":"down","tooltip":"%s down"}\n' "$iface"
+  printf '{"text":"<span color=\\"#928374\\"><s>󰒃 VPN</s></span>","class":"down","tooltip":"%s down — click to connect"}\n' "$iface"
 fi
diff --git a/dot_config/waybar/style.css b/dot_config/waybar/style.css
index 86e546a..4866f11 100644
--- a/dot_config/waybar/style.css
+++ b/dot_config/waybar/style.css
@@ -34,6 +34,7 @@ window#waybar {
 
 #custom-vpn.down {
   color: #928374;
+  background-color: rgba(251, 73, 52, 0.15);
 }
 
 #mode {