Further setups and all-around fixes

i3/scripts/focused-monitor.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Which output contains the focused node?
+output=$(i3-msg -t get_tree | jq -r '.. | select(.focused? == true) | .output')
+
+# Get its geometry from i3 directly
+geometry=$(i3-msg -t get_outputs \
+  | jq -r --arg out "$output" '.[] | select(.name==$out and .active) 
+      | .rect | "\(.width)x\(.height)+\(.x)+\(.y)"')
+
+# Shoot that output
+exec maim -u -g "$geometry" "$@"
+