fix: centralize and nixifiy in 'zk' module

dots/.bin/save-zk

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-cd "$ZK_PATH" || echo "No zettelkasten directory found"
-git a . && git commit -m "Update" && git push

dots/.bin/setup-zk

@@ -1,20 +0,0 @@
-#!/bin/bash
-
-if [ ! -d ~/.zk ]; then
-    echo "[zk] Setting up zettelkasten"
-    gh repo clone zk ~/.zk
-else
-    echo "[zk] Zettelkasten already set up."
-fi
-
-read -p "Would you like open your zettelkasten? [y/N] " -n 1 -r
-echo
-
-if [[ $REPLY =~ ^[Yy]$ ]]; then
-  if [ -x "$(command -v zk)" ]; then
-    zk
-  else
-    echo "Error: 'zk' command not found or not executable"
-    exit 1
-  fi
-fi

dots/.bin/zk

@@ -1,35 +0,0 @@
-#!/usr/bin/env bash
-
-current_zettel_path="$ZK_PATH/$(cat "$ZK_PATH/current-zettel.txt")"
-
-if [ "$TERM_PROGRAM" = tmux ]; then
-  cd "$ZK_PATH" && $EDITOR "$current_zettel_path"
-else
-  echo 'Not in tmux'
-  echo 'Choose an option:'
-  echo '1. Open in tmux'
-  echo '2. Open in current terminal'
-  read -r -p 'Enter your choice: ' choice
-  case $choice in
-    1)
-      # Check if a tmux session is running with a window named zk
-      if tmux list-windows -F '#{window_name}' | grep -q zk; then
-        # Attach to the session containing the 'zk' window
-        session="$(tmux list-windows -F '#{window_name} #{session_name}' | grep zk | head -n 1 | awk '{ print $2 }')"
-        tmux attach -t "$session"
-      else
-        # Create session with a window named 'zk' and start nvim
-        tmux new-session -s zk -n zk -d
-        tmux send-keys -t zk:zk "cd $ZK_PATH && $EDITOR $current_zettel_path" Enter
-        tmux attach -t zk
-      fi
-      ;;
-    2)
-      cd "$ZK_PATH" && $EDITOR "$current_zettel_path"
-      ;;
-    *)
-      echo 'Not opening Zettelkasten'
-      exit 1
-      ;;
-  esac
-fi