feat: add RustDesk Server scripts (hbbs+hbbr native, systemd, UFW)

- install-rustdesk-server.sh: download & install hbbs/hbbr from GitHub releases
- rustdesk-hbbs.service: systemd unit for ID-server (ports 21115-21116)
- rustdesk-hbbr.service: systemd unit for relay (port 21117)
- open-rustdesk-ports.sh: idempotent UFW port opening
- README.md: deployment instructions

Generated by orchestrator in APAW worktree, applied to VPS 2.59.219.61

scripts/open-rustdesk-ports.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+log() {
+    echo "[$(date +'%Y-%m-%dT%H:%M:%S%z')] $*"
+}
+
+if ! command -v ufw >/dev/null 2>&1; then
+    log "UFW not installed. Installing..."
+    apt-get update -qq
+    apt-get install -y -qq ufw
+fi
+
+UFW_STATUS=$(ufw status numbered 2>/dev/null || true)
+
+open_port() {
+    local port=$1
+    local proto=${2:-tcp}
+    local rule="$port/$proto"
+    if echo "$UFW_STATUS" | grep -q "$rule"; then
+        log "Already open: $rule"
+    else
+        log "Opening: $rule"
+        ufw allow "$rule"
+    fi
+}
+
+log "=== Opening RustDesk Server ports ==="
+open_port 21115 tcp
+open_port 21116 tcp
+open_port 21116 udp
+open_port 21117 tcp
+open_port 21118 tcp
+open_port 21119 tcp
+
+log "=== UFW status ==="
+ufw status verbose
+
+log "=== Done ==="