Add screenshot sync to Mac via niri

niri/files/copy-latest-screenshot.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+screenshot_dir="$HOME/Pictures/Screenshots"
+remote_target="mac-attio:~/screenshot.png"
+
+notify() {
+  DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$(id -u)/bus" \
+  XDG_RUNTIME_DIR="/run/user/$(id -u)" \
+  notify-send "$@"
+}
+
+shopt -s nullglob
+files=("$screenshot_dir"/*.png)
+latest_file=""
+if (( ${#files[@]} )); then
+  latest_file=$(ls -1t "${files[@]}" | head -n 1)
+fi
+
+if [[ -z "${latest_file:-}" ]]; then
+  notify "Screenshot upload" "No screenshots found in $screenshot_dir"
+  exit 1
+fi
+
+if scp -q "$latest_file" "$remote_target"; then
+  notify "Screenshot upload" "Uploaded $(basename "$latest_file")"
+else
+  notify "Screenshot upload" "Upload failed"
+  exit 1
+fi