Minecraft 26.2 Fabric server stack with CraftDeck management panel

- docker-compose: itzg/minecraft-server (Fabric, offline mode, whitelist
  enforced, Modrinth-managed mods), itzg/mc-backup sidecar, custom dashboard
- Gated auth for offline mode: approve username -> whitelisted with a short
  registration window -> EasyAuth /register + /login; auto-revoke on expiry
- CraftDeck panel (Next.js 16, zero native deps): live console (SSE), players
  & stats, lag diagnostics (server TPS vs player ping via spark), performance
  graphs, Modrinth mod search/manager, backups & restore, sandboxed file
  browser/editor, .env config editor with compose apply, cron schedules,
  Discord alerts, scrypt-hashed panel login
- scripts/setup.sh generates secrets; docs/ covers auth, mods, updating,
  backups, networking (Tailscale), troubleshooting

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/restore.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Manual backup restore (fallback for when the dashboard is unavailable).
+# The dashboard's Backups page does this same procedure with one click.
+#
+# Usage: ./scripts/restore.sh data/backups/world-20260710-120000.tgz
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+archive="${1:-}"
+[[ -n "$archive" && -f "$archive" ]] || {
+  echo "Usage: $0 <backup .tgz file>"
+  echo "Available backups:"
+  ls -1h data/backups/*.tgz 2>/dev/null || echo "  (none)"
+  exit 1
+}
+
+echo "This will STOP the server and overwrite the current world with:"
+echo "  $archive"
+read -r -p "Type 'restore' to continue: " confirm
+[[ "$confirm" == "restore" ]] || { echo "Aborted."; exit 1; }
+
+docker compose stop mc
+tar -xzf "$archive" -C data/mc
+docker compose start mc
+echo "✔ Restore complete — server starting."