feat(ghostty): tweak cursor and selection colors

Switch cursor to block with inverted fg/bg, and use a brighter blue
selection background for better readability.

Author: mhiro2

ghostty/config

@@ -6,15 +6,20 @@ font-family = Moralerspace Neon
 font-size = 13
 
 # Cursor
-cursor-style = bar
+cursor-style = block
 cursor-style-blink = true
+cursor-invert-fg-bg = true
 
 # Mouse / clipboard
 mouse-hide-while-typing = true
 copy-on-select = clipboard
 clipboard-paste-protection = true
 clipboard-trim-trailing-spaces = true
 
+# Selection
+selection-background = #4a8fd9
+selection-foreground = #ffffff
+
 # Window
 window-padding-x = 8
 window-padding-y = 8