Add setup-rustdesk.sh: install client + point at self-hosted server

Server/key values from dev/42_101 client-setup doc.

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

setup-rustdesk.sh

@@ -0,0 +1,28 @@
+#!/bin/zsh
+# 安裝 RustDesk + 設定連自架伺服器 (hbbs/hbbr @ 125.229.110.50,見 dev/42_101)
+set -e
+eval "$(/opt/homebrew/bin/brew shellenv)"
+
+echo "=== 安裝 RustDesk (已裝則跳過) ==="
+ls /Applications/RustDesk.app >/dev/null 2>&1 || brew install --cask rustdesk
+
+echo "=== 寫入伺服器設定 ==="
+# 先關掉 RustDesk 避免設定被覆寫
+pkill -x RustDesk 2>/dev/null || true
+sleep 1
+D=~/Library/Preferences/com.carriez.RustDesk
+mkdir -p "$D"
+cat > "$D/RustDesk2.toml" <<'TOML'
+rendezvous_server = '125.229.110.50:21116'
+nat_type = 1
+serial = 0
+
+[options]
+custom-rendezvous-server = '125.229.110.50'
+relay-server = '125.229.110.50'
+key = 'mOGwk4glxPGxoqRGlpkIjyPPoyuV6Jpsosz+4+RJe9M='
+TOML
+
+echo "=== 啟動 RustDesk ==="
+open -a RustDesk
+echo "完成。到 GUI 確認左下角顯示「就緒」且出現裝置 ID。"