added remote shell detection

is_remote.sh

@@ -0,0 +1,21 @@
+# Detect if the current session is running on a remote server by listing parent
+# processes of this shell and checking for things like sshd/tailscaled. Runs
+# first because multiple other things rely on this.
+
+
+function __is_remote() {
+	# names of daemon processes a remote shell might be a child process of
+	remote_daemons=(
+	    sshd
+	)
+
+	is_remote=()
+	parent_procs="$(pstree -s $$)"
+	for d in ${remote_daemons[@]}; do
+		if [[ "$parent_procs" =~ "$d" ]]; then
+			return 1
+		fi
+	done
+
+	return 0
+}