feature: added ip-gather command for improved workflow

packages/ip-gather/default.nix

@@ -0,0 +1,36 @@
+# incus-ip-collector.nix
+{
+  writeShellScriptBin,
+}:
+
+writeShellScriptBin "ip-gather" ''
+  set -euo pipefail
+
+  remote_host="''${1:-"administrator@olympus"}"
+  output_file="''${2:-container_ips.json}"
+
+  generate_json() {
+    echo "{"
+    first=true
+    for c in $(incus list --format csv -c n | awk '!/NAME/ {print $1}'); do
+      ip=$(incus exec "$c" -- ip -6 addr show dev ygg0 2>/dev/null | awk '/inet6/ {print $2}' | cut -d/ -f1 | grep -v '^fe80' | head -n1)
+      if [ -n "$ip" ]; then
+        [ "$first" = false ] && echo ","
+        echo -n "  \"$c\": \"$ip\""
+        first=false
+      fi
+    done
+    echo ""
+    echo "}"
+  }
+
+  if [ -n "''${remote_host}" ]; then
+    # Execute remotely and save to local file
+    ssh "$remote_host" "$(declare -f generate_json); generate_json" > "$output_file"
+  else
+    # Execute locally and save to file
+    generate_json > "$output_file"
+  fi
+
+  echo "Container IPs saved to: $output_file"
+''