feat(mako): merge Catppuccin theme, urgency styling, and replaceable volume notifications

- Catppuccin colors, JetBrainsMono font, rounded corners, overlay layer
- Urgency-based border colors and persistent high-urgency notifications
- Volume notifications now replace each other (group-by)

🤖 Generated with [opencode](https://opencode.ai)

Co-Authored-By: opencode <noreply@opencode.ai>

.config/mako/config

@@ -1,19 +1,30 @@
-font=JetBrainsMono 12
+sort=-time
+layer=overlay
 background-color=#1e1e2e
 text-color=#cdd6f4
-border-color=#89b4fa
+font=JetBrainsMono 14
+width=300
+height=110
 border-size=2
-
-
-# Default: notifications at the top right
+border-radius=15
+border-color=#89b4fa
 anchor=top-right
 margin=20,20,0,0
-
-# Default notification timeout (ms)
 default-timeout=3000
 
+[urgency=low]
+border-color=#cccccc
+
+[urgency=normal]
+border-color=#d08770
+
+[urgency=high]
+border-color=#bf616a
+default-timeout=0
+
 # Shorter timeout and bottom center for volume notifications
 [app-name=Volume]
 anchor=bottom-center
 margin=0,0,40,0
 default-timeout=1200
+group-by=app-name