feat: change from emacs mode to vi mode

zsh/rc

@@ -30,8 +30,34 @@ setopt HIST_REDUCE_BLANKS
 setopt HIST_VERIFY
 setopt INC_APPEND_HISTORY_TIME
 
-# Emacs mode
-bindkey -e
+###########
+# Vi mode #
+###########
+
+bindkey -v
+export KEYTIMEOUT=1  # Reduce ESC delay to 10ms
+bindkey -v '^?' backward-delete-char  # Make backspace work in vi insert mode
+bindkey -v '^H' backward-delete-char  # Alternative backspace binding
+bindkey -a '_' vi-first-non-blank
+
+# Selection highlight
+# shellcheck disable=SC2034
+zle_highlight=(region:bg=#323641)
+
+# Change cursor shape based on vi mode
+function zle-keymap-select {
+    if [[ ${KEYMAP} == main ]]; then
+        echo -ne '\e[5 q'  # Beam cursor for insert mode
+    elif [[ ${KEYMAP} == vicmd ]]; then
+        echo -ne '\e[1 q'  # Block cursor for command mode
+    fi
+}
+zle -N zle-keymap-select
+
+function zle-line-init {
+    echo -ne '\e[5 q'  # Beam cursor for insert mode
+}
+zle -N zle-line-init
 
 ###################
 # Shell Variables #