Add reinstall prompt if already installed

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: sssemil

install.sh

@@ -17,6 +17,17 @@ mkdir -p "$BIN_DIR"
 
 export PATH="$BIN_DIR:$PATH"
 
+# check if already installed
+if [ -x "$BIN_DIR/safe-claude" ]; then
+  echo "safe-claude is already installed."
+  printf "Reinstall? [y/N] "
+  read -r answer
+  case "$answer" in
+    [Yy]*) ;;
+    *) echo "Aborted."; exit 0 ;;
+  esac
+fi
+
 # install claude code if missing
 if ! command -v claude >/dev/null 2>&1; then
   echo "Installing Claude Code (npm)"