feat: switch terminal to Kitty and update related configs

- Replace WezTerm with Kitty as default terminal
- Update terminal keybindings in Hyprland config
- Adjust Kitty cursor settings (blink interval, trail, shape)
- Change Helix cursor shape from block to bar in normal mode

home/.config/kitty/kitty.conf

@@ -292,7 +292,7 @@ font_size 12.0
 
 #: The thickness of the underline cursor (in pts).
 
-cursor_blink_interval 0.5 linear
+cursor_blink_interval 0.8 linear
 
 #: The interval to blink the cursor (in seconds). Set to zero to
 #: disable blinking. Negative values mean use system default. Note
@@ -308,11 +308,13 @@ cursor_blink_interval 0.5 linear
 #: uses extra power as it means the screen is redrawn multiple times
 #: per blink interval. See also, cursor_stop_blinking_after.
 
-# cursor_stop_blinking_after 15.0
+cursor_trail 10
+cursor_trail_decay 0.1 0.3
+cursor_trail_start_threshold 0
+cursor_shape block
+shell_integration no-cursor
 
-cursor_trail 3
-cursor_trail_decay 0.1 0.4
-cursor_trail_start_threshold 2
+# cursor_stop_blinking_after 15.0
 
 #: Stop blinking cursor after the specified number of seconds of
 #: keyboard inactivity. Set to zero to never stop blinking.
@@ -1226,7 +1228,7 @@ window_padding_width 3
 #: macOS and KDE.
 
 # background_image ~/.config/wezterm/lain.gif
-# background_image_layout centered
+# background_image_layout scaled
 # background_opacity 0.2
 # background_tint 0.5