diff --git a/ci/runners/linux/provision-builder.sh b/ci/runners/linux/provision-builder.sh
new file mode 100755
index 0000000..4c0b424
--- /dev/null
+++ b/ci/runners/linux/provision-builder.sh
@@ -0,0 +1,264 @@
+#!/usr/bin/env bash
+# Provisions an Ubuntu 22.04 LTS or Debian 13 (Trixie) host as a Gitea Actions
+# runner for RustDesk desktop (.deb) builds. Idempotent: safe to re-run.
+#
+# Versions are pinned to .gitea/workflows/build-linux.yml. Bump them there and
+# here together.
+#
+# Build host vs. user host: the resulting .deb links against the host's glibc.
+# Build on the OLDEST distro your users have, otherwise the .deb won't install
+# on older systems.
+#   - Ubuntu 22.04 build  -> runs on Ubuntu 22.04+, Debian 12+, derivatives
+#   - Debian 13   build  -> runs on Debian 13+, Ubuntu 24.04+ only
+#
+# Usage:
+#   sudo ./provision.sh \
+#     --gitea-url https://gitea.example.com \
+#     --runner-token <token>
+#
+# All toolchains land in /opt and are readable by the gitea-runner user.
+# Service is installed as a systemd unit running as that user.
+
+set -euo pipefail
+
+# ---- pinned versions (mirror .gitea/workflows/build-linux.yml env block) ----
+RUST_VERSION="1.75.0"
+FLUTTER_VERSION="3.24.5"        # used for `flutter build linux`
+FLUTTER_BRIDGE_VERSION="3.22.3" # used for `flutter pub get` + flutter_rust_bridge_codegen
+LLVM_VERSION="15.0.6"
+VCPKG_COMMIT="120deac3062162151622ca4860575a33844ba10b"
+RUNNER_VERSION="0.2.11"
+
+# ---- defaults ----
+RUNNER_NAME="$(hostname)-rustdesk"
+RUNNER_LABELS=""        # auto-derived from /etc/os-release if empty
+SERVICE_USER="gitea-runner"
+GITEA_URL=""
+RUNNER_TOKEN=""
+
+# ---- arg parse ----
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --gitea-url)     GITEA_URL="$2";     shift 2 ;;
+        --runner-token)  RUNNER_TOKEN="$2";  shift 2 ;;
+        --runner-name)   RUNNER_NAME="$2";   shift 2 ;;
+        --runner-labels) RUNNER_LABELS="$2"; shift 2 ;;
+        --service-user)  SERVICE_USER="$2";  shift 2 ;;
+        -h|--help)
+            sed -n '2,18p' "$0"
+            exit 0 ;;
+        *) echo "Unknown arg: $1" >&2; exit 2 ;;
+    esac
+done
+
+[[ "$EUID" -eq 0 ]] || { echo "Run as root (use sudo)." >&2; exit 1; }
+[[ -n "$GITEA_URL" && -n "$RUNNER_TOKEN" ]] \
+    || { echo "Missing --gitea-url or --runner-token" >&2; exit 2; }
+
+. /etc/os-release
+case "${ID}-${VERSION_ID:-}" in
+    ubuntu-22.04)  DISTRO_LABEL="ubuntu-22.04" ;;
+    debian-13|debian-trixie) DISTRO_LABEL="debian-13" ;;
+    *)
+        echo "WARNING: tested only on Ubuntu 22.04 and Debian 13. You're on $PRETTY_NAME."
+        echo "Package names may differ; build outputs may not run on user systems."
+        DISTRO_LABEL="${ID}-${VERSION_ID:-unknown}"
+        sleep 3 ;;
+esac
+
+# If --runner-labels wasn't passed, derive a sensible default that includes the
+# detected distro so workflows can target a specific build host when needed.
+if [[ -z "$RUNNER_LABELS" ]]; then
+    RUNNER_LABELS="${DISTRO_LABEL},self-hosted,X64,Linux"
+fi
+
+log() { printf '\n==> %s\n' "$*"; }
+
+# ---- 1. apt packages ----
+log "Installing apt packages"
+export DEBIAN_FRONTEND=noninteractive
+apt-get update -qq
+apt-get install -y --no-install-recommends \
+    build-essential clang gcc g++ cmake ninja-build pkg-config nasm yasm \
+    autoconf automake libtool libtool-bin \
+    libclang-dev llvm-dev \
+    libgtk-3-dev libayatana-appindicator3-dev \
+    libasound2-dev libpulse-dev libpam0g-dev libssl-dev \
+    libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
+    libva-dev libxdo-dev libxfixes-dev \
+    libxcb-randr0-dev libxcb-shape0-dev libxcb-xfixes0-dev \
+    git curl wget zip unzip tar xz-utils ca-certificates \
+    python3 python3-pip \
+    rpm tree dpkg-dev sudo
+
+# Node.js (act_runner spawns node for JS actions like actions/checkout)
+if ! command -v node >/dev/null; then
+    log "Installing Node.js LTS"
+    curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
+    apt-get install -y --no-install-recommends nodejs
+fi
+
+# ---- 2. LLVM (binary tarball; libclang-15-dev was dropped from Debian 13) ----
+LLVM_DIR="/opt/llvm-${LLVM_VERSION}"
+if [[ ! -x "$LLVM_DIR/bin/clang" ]]; then
+    log "Installing LLVM $LLVM_VERSION (binary tarball)"
+    arch="$(uname -m)"
+    case "$arch" in
+        x86_64)  llvm_arch="x86_64-linux-gnu-ubuntu-18.04" ;;
+        aarch64) llvm_arch="aarch64-linux-gnu" ;;
+        *) echo "Unsupported arch for LLVM tarball: $arch" >&2; exit 1 ;;
+    esac
+    tmp="$(mktemp -d)"
+    curl -fsSL -o "$tmp/llvm.tar.xz" \
+        "https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/clang+llvm-${LLVM_VERSION}-${llvm_arch}.tar.xz"
+    mkdir -p "$LLVM_DIR"
+    tar --strip-components=1 -xJf "$tmp/llvm.tar.xz" -C "$LLVM_DIR"
+    rm -rf "$tmp"
+fi
+
+# ---- 3. dedicated runner user ----
+if ! id -u "$SERVICE_USER" >/dev/null 2>&1; then
+    log "Creating user $SERVICE_USER"
+    useradd --system --create-home --shell /bin/bash "$SERVICE_USER"
+fi
+RUNNER_HOME="$(getent passwd "$SERVICE_USER" | cut -d: -f6)"
+
+# ---- 4. Rust (machine-wide) ----
+export RUSTUP_HOME=/opt/rustup
+export CARGO_HOME=/opt/cargo
+mkdir -p "$RUSTUP_HOME" "$CARGO_HOME"
+
+if [[ ! -x "$CARGO_HOME/bin/rustup" ]]; then
+    log "Installing rustup at $RUSTUP_HOME / $CARGO_HOME"
+    curl -fsSL https://sh.rustup.rs | RUSTUP_HOME="$RUSTUP_HOME" CARGO_HOME="$CARGO_HOME" \
+        sh -s -- -y --default-toolchain none --profile minimal --no-modify-path
+fi
+"$CARGO_HOME/bin/rustup" toolchain install "$RUST_VERSION" --profile minimal --component rustfmt
+"$CARGO_HOME/bin/rustup" target add --toolchain "$RUST_VERSION" x86_64-unknown-linux-gnu
+"$CARGO_HOME/bin/rustup" default "$RUST_VERSION"
+
+# ---- 5. Flutter (two SDKs: 3.24.5 for build, 3.22.3 for bridge gen) ----
+# Why two: the bridge codegen (flutter_rust_bridge_codegen 1.80.1 + freezed)
+# produces broken Dart output when run under newer Flutter SDKs on Linux.
+# Upstream's bridge.yml uses 3.22.3 specifically; we mirror that. The .deb
+# build itself uses 3.24.5.
+install_flutter() {
+    local ver="$1" dir="$2"
+    if [[ ! -x "$dir/bin/flutter" ]]; then
+        log "Installing Flutter $ver -> $dir"
+        local tmp; tmp="$(mktemp -d)"
+        local parent; parent="$(dirname "$dir")"
+        curl -fsSL -o "$tmp/flutter.tar.xz" \
+            "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${ver}-stable.tar.xz"
+        # Tarball extracts into a top-level `flutter/` dir; rename to target.
+        tar -xJf "$tmp/flutter.tar.xz" -C "$tmp"
+        mkdir -p "$parent"
+        mv "$tmp/flutter" "$dir"
+        rm -rf "$tmp"
+    fi
+    "$dir/bin/flutter" config --no-analytics >/dev/null
+    "$dir/bin/flutter" precache --linux >/dev/null
+}
+install_flutter "$FLUTTER_VERSION"        /opt/flutter
+install_flutter "$FLUTTER_BRIDGE_VERSION" /opt/flutter-bridge
+FLUTTER_DIR=/opt/flutter
+
+# ---- 6. vcpkg ----
+VCPKG_DIR=/opt/vcpkg
+if [[ ! -d "$VCPKG_DIR/.git" ]]; then
+    log "Cloning vcpkg"
+    git clone https://github.com/microsoft/vcpkg.git "$VCPKG_DIR"
+fi
+git -C "$VCPKG_DIR" fetch --tags origin
+git -C "$VCPKG_DIR" -c advice.detachedHead=false checkout "$VCPKG_COMMIT"
+[[ -x "$VCPKG_DIR/vcpkg" ]] || "$VCPKG_DIR/bootstrap-vcpkg.sh" -disableMetrics
+
+# vcpkg binary cache (file-backed -- same scheme as build-windows.yml)
+mkdir -p /var/cache/vcpkg
+chown -R "$SERVICE_USER:$SERVICE_USER" /var/cache/vcpkg
+
+# ---- 7. Permissions ----
+log "Setting up permissions for $SERVICE_USER"
+chown -R "$SERVICE_USER:$SERVICE_USER" "$CARGO_HOME"
+# rustup state needs to be writable too -- toolchain installs touch it.
+chown -R "$SERVICE_USER:$SERVICE_USER" "$RUSTUP_HOME"
+# Flutter SDK: r/x is enough for builds, but `flutter pub get` writes to its
+# own cache subdir so we make it writable as well.
+chown -R "$SERVICE_USER:$SERVICE_USER" "$FLUTTER_DIR"
+chown -R "$SERVICE_USER:$SERVICE_USER" /opt/flutter-bridge
+# vcpkg: builds write under installed/, buildtrees/, etc.
+chown -R "$SERVICE_USER:$SERVICE_USER" "$VCPKG_DIR"
+# LLVM: read+execute is enough; we never write here at build time.
+chown -R "$SERVICE_USER:$SERVICE_USER" "$LLVM_DIR"
+# /opt/cargo-tools: workflow installs cargo-expand and flutter_rust_bridge_codegen
+# here via `cargo install --root`. Pre-create with the right owner so the first
+# job doesn't try to mkdir under root-owned /opt.
+mkdir -p /opt/cargo-tools
+chown -R "$SERVICE_USER:$SERVICE_USER" /opt/cargo-tools
+
+# git "dubious ownership": same fix as Windows. Trust system-wide.
+git config --system --add safe.directory '*' || true
+
+# ---- 8. act_runner ----
+RUNNER_DIR=/var/lib/gitea-runner
+mkdir -p "$RUNNER_DIR"
+chown -R "$SERVICE_USER:$SERVICE_USER" "$RUNNER_DIR"
+
+if [[ ! -x "$RUNNER_DIR/act_runner" ]]; then
+    log "Downloading act_runner $RUNNER_VERSION"
+    curl -fsSL -o "$RUNNER_DIR/act_runner" \
+        "https://gitea.com/gitea/act_runner/releases/download/v${RUNNER_VERSION}/act_runner-${RUNNER_VERSION}-linux-amd64"
+    chmod +x "$RUNNER_DIR/act_runner"
+    chown "$SERVICE_USER:$SERVICE_USER" "$RUNNER_DIR/act_runner"
+fi
+
+if [[ ! -f "$RUNNER_DIR/.runner" ]]; then
+    log "Registering runner with $GITEA_URL"
+    sudo -u "$SERVICE_USER" -H bash -c "
+        cd '$RUNNER_DIR' && \
+        ./act_runner register --no-interactive \
+            --instance '$GITEA_URL' \
+            --token    '$RUNNER_TOKEN' \
+            --name     '$RUNNER_NAME' \
+            --labels   '$RUNNER_LABELS'
+    "
+fi
+
+# ---- 9. systemd service ----
+log "Installing systemd unit"
+cat > /etc/systemd/system/gitea-act-runner.service <<EOF
+[Unit]
+Description=Gitea Actions runner (RustDesk)
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=${SERVICE_USER}
+WorkingDirectory=${RUNNER_DIR}
+ExecStart=${RUNNER_DIR}/act_runner daemon
+Restart=on-failure
+RestartSec=5
+
+# Toolchain locations -- needed because services don't inherit a login shell's PATH.
+Environment=RUSTUP_HOME=${RUSTUP_HOME}
+Environment=CARGO_HOME=${CARGO_HOME}
+Environment=VCPKG_ROOT=${VCPKG_DIR}
+Environment=LIBCLANG_PATH=${LLVM_DIR}/lib
+Environment=PATH=${CARGO_HOME}/bin:${FLUTTER_DIR}/bin:${LLVM_DIR}/bin:${VCPKG_DIR}:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+# Resource limits for builds
+LimitNOFILE=65535
+TasksMax=infinity
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+systemctl daemon-reload
+systemctl enable gitea-act-runner.service
+systemctl restart gitea-act-runner.service
+
+log "Done."
+echo "    Verify with:    systemctl status gitea-act-runner"
+echo "    Tail logs with: journalctl -u gitea-act-runner -f"
+echo "    Runner should appear (online) at $GITEA_URL > Site Admin > Actions > Runners"
diff --git a/ci/runners/linux/provision.sh b/ci/runners/linux/provision-signer.sh
similarity index 100%
rename from ci/runners/linux/provision.sh
rename to ci/runners/linux/provision-signer.sh
diff --git a/ci/runners/macos/provision-builder.sh b/ci/runners/macos/provision-builder.sh
new file mode 100755
index 0000000..2331720
--- /dev/null
+++ b/ci/runners/macos/provision-builder.sh
@@ -0,0 +1,291 @@
+#!/usr/bin/env bash
+# Provisions a macOS host (Apple Silicon, macOS 14+) as a Gitea Actions runner
+# for RustDesk desktop (.dmg) builds. Idempotent: safe to re-run.
+#
+# Versions are pinned to .gitea/workflows/build-macos.yml. Bump them there and
+# here together.
+#
+# Usage:
+#   sudo ./provision.sh \
+#     --gitea-url https://gitea.example.com \
+#     --runner-token <token>
+#
+# Toolchains land in /opt/* (chowned to the runner user). Service is installed
+# as a LaunchDaemon running as that user.
+
+set -euo pipefail
+
+# ---- pinned versions (mirror .gitea/workflows/build-macos.yml env block) ----
+RUST_VERSION="1.81.0"               # MAC_RUST_VERSION upstream (cidre crate needs >=1.81)
+FLUTTER_VERSION="3.24.5"            # used for `flutter build macos`
+FLUTTER_BRIDGE_VERSION="3.22.3"     # used for `flutter pub get` + flutter_rust_bridge_codegen
+VCPKG_COMMIT="120deac3062162151622ca4860575a33844ba10b"
+NASM_VERSION="2.16.03"              # 3.x has incompatible CLI; aom/dav1d need 2.x
+RUNNER_VERSION="0.2.11"
+
+# ---- defaults ----
+RUNNER_NAME="$(hostname -s)-rustdesk"
+RUNNER_LABELS=""
+SERVICE_USER="gitea-runner"
+GITEA_URL=""
+RUNNER_TOKEN=""
+
+# ---- arg parse ----
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --gitea-url)     GITEA_URL="$2";     shift 2 ;;
+        --runner-token)  RUNNER_TOKEN="$2";  shift 2 ;;
+        --runner-name)   RUNNER_NAME="$2";   shift 2 ;;
+        --runner-labels) RUNNER_LABELS="$2"; shift 2 ;;
+        --service-user)  SERVICE_USER="$2";  shift 2 ;;
+        -h|--help)
+            sed -n '2,15p' "$0"
+            exit 0 ;;
+        *) echo "Unknown arg: $1" >&2; exit 2 ;;
+    esac
+done
+
+[[ "$EUID" -eq 0 ]] || { echo "Run as root (use sudo)." >&2; exit 1; }
+[[ -n "$GITEA_URL" && -n "$RUNNER_TOKEN" ]] \
+    || { echo "Missing --gitea-url or --runner-token" >&2; exit 2; }
+
+# ---- arch + macOS version detection ----
+ARCH="$(uname -m)"
+case "$ARCH" in
+    arm64)  HOMEBREW_PREFIX="/opt/homebrew";  ARCH_LABEL="ARM64" ;;
+    x86_64) HOMEBREW_PREFIX="/usr/local";     ARCH_LABEL="X64" ;;
+    *) echo "Unsupported arch: $ARCH" >&2; exit 1 ;;
+esac
+
+OS_MAJOR="$(sw_vers -productVersion | cut -d. -f1)"
+[[ "$OS_MAJOR" -ge 14 ]] || {
+    echo "WARNING: tested only on macOS 14+. You're on $(sw_vers -productVersion)."
+    sleep 3
+}
+DISTRO_LABEL="macos-${OS_MAJOR}"
+
+if [[ -z "$RUNNER_LABELS" ]]; then
+    RUNNER_LABELS="${DISTRO_LABEL},self-hosted,${ARCH_LABEL},macOS"
+fi
+
+log() { printf '\n==> %s\n' "$*"; }
+
+# ---- 1. Xcode Command Line Tools ----
+log "Verifying Xcode Command Line Tools"
+if ! /usr/bin/xcode-select -p >/dev/null 2>&1; then
+    echo "Xcode Command Line Tools not installed. Run:" >&2
+    echo "    xcode-select --install" >&2
+    echo "Then re-run this script." >&2
+    exit 1
+fi
+echo "    $(xcode-select -p)"
+
+# ---- 2. Homebrew (machine-wide) ----
+# Homebrew refuses to install under root (its installer aborts with
+# "Don't run this as root!"). It must be installed manually by a regular
+# user before this script runs.
+log "Verifying Homebrew"
+if [[ ! -x "$HOMEBREW_PREFIX/bin/brew" ]]; then
+    echo "Homebrew not installed at $HOMEBREW_PREFIX." >&2
+    echo "Install it as your regular user (NOT root), then re-run this script:" >&2
+    echo "    /bin/bash -c \"\$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)\"" >&2
+    exit 1
+fi
+export PATH="$HOMEBREW_PREFIX/bin:$PATH"
+echo "    $(brew --version | head -1)"
+
+# brew install must also run as a non-root user. Determine which user invoked
+# sudo so we can drop privileges for brew commands below.
+BREW_USER="${SUDO_USER:-}"
+if [[ -z "$BREW_USER" || "$BREW_USER" == "root" ]]; then
+    echo "Could not determine the non-root user that ran sudo (SUDO_USER unset)." >&2
+    echo "Re-run with: sudo ./provision.sh ..." >&2
+    exit 1
+fi
+brew_as_user() { sudo -u "$BREW_USER" -H "$HOMEBREW_PREFIX/bin/brew" "$@"; }
+
+# ---- 3. brew packages ----
+log "Installing brew packages"
+brew_pkgs=(node cocoapods llvm create-dmg pkg-config cmake ninja yasm autoconf automake libtool wget)
+for p in "${brew_pkgs[@]}"; do
+    if brew_as_user list --versions "$p" >/dev/null 2>&1; then
+        echo "    $p (already installed)"
+    else
+        brew_as_user install "$p"
+    fi
+done
+
+# ---- 4. NASM 2.16.x (NOT brew's nasm 3.x; aom/dav1d need 2.x) ----
+if ! /usr/local/bin/nasm --version 2>/dev/null | grep -q "version $NASM_VERSION"; then
+    log "Installing NASM $NASM_VERSION"
+    tmp="$(mktemp -d)"
+    curl -fsSL -o "$tmp/nasm.zip" \
+        "https://www.nasm.us/pub/nasm/releasebuilds/${NASM_VERSION}/macosx/nasm-${NASM_VERSION}-macosx.zip"
+    unzip -q "$tmp/nasm.zip" -d "$tmp"
+    install -m 0755 "$tmp/nasm-${NASM_VERSION}/nasm" /usr/local/bin/nasm
+    rm -rf "$tmp"
+fi
+/usr/local/bin/nasm --version | head -1
+
+# ---- 5. dedicated runner user ----
+if ! /usr/bin/id -u "$SERVICE_USER" >/dev/null 2>&1; then
+    log "Creating user $SERVICE_USER"
+    # Find an unused UID >= 600
+    uid=600
+    while dscl . -list /Users UniqueID | awk '{print $2}' | grep -qx "$uid"; do
+        uid=$((uid + 1))
+    done
+    dscl . -create "/Users/$SERVICE_USER"
+    dscl . -create "/Users/$SERVICE_USER" UserShell /bin/bash
+    dscl . -create "/Users/$SERVICE_USER" RealName "Gitea Runner"
+    dscl . -create "/Users/$SERVICE_USER" UniqueID "$uid"
+    dscl . -create "/Users/$SERVICE_USER" PrimaryGroupID 20
+    dscl . -create "/Users/$SERVICE_USER" NFSHomeDirectory "/Users/$SERVICE_USER"
+    mkdir -p "/Users/$SERVICE_USER"
+    chown "$SERVICE_USER:staff" "/Users/$SERVICE_USER"
+fi
+RUNNER_HOME="/Users/$SERVICE_USER"
+
+# ---- 6. Rust (machine-wide) ----
+export RUSTUP_HOME=/opt/rustup
+export CARGO_HOME=/opt/cargo
+mkdir -p "$RUSTUP_HOME" "$CARGO_HOME"
+
+if [[ ! -x "$CARGO_HOME/bin/rustup" ]]; then
+    log "Installing rustup at $RUSTUP_HOME / $CARGO_HOME"
+    curl -fsSL https://sh.rustup.rs | RUSTUP_HOME="$RUSTUP_HOME" CARGO_HOME="$CARGO_HOME" \
+        sh -s -- -y --default-toolchain none --profile minimal --no-modify-path
+fi
+"$CARGO_HOME/bin/rustup" toolchain install "$RUST_VERSION" --profile minimal --component rustfmt
+"$CARGO_HOME/bin/rustup" target add --toolchain "$RUST_VERSION" aarch64-apple-darwin x86_64-apple-darwin
+"$CARGO_HOME/bin/rustup" default "$RUST_VERSION"
+
+# ---- 7. Flutter (two SDKs: 3.24.5 for build, 3.22.3 for bridge gen) ----
+# Same rationale as Linux: bridge codegen 1.80.1 + freezed produces broken Dart
+# under newer Flutter. Run codegen under 3.22.3, build under 3.24.5.
+install_flutter() {
+    local ver="$1" dir="$2"
+    if [[ ! -x "$dir/bin/flutter" ]]; then
+        log "Installing Flutter $ver -> $dir"
+        local tmp; tmp="$(mktemp -d)"
+        local parent; parent="$(dirname "$dir")"
+        # Flutter URL pattern differs between archs: Apple Silicon has an
+        # `_arm64_` infix, Intel has no arch infix at all.
+        local flutter_url_base="https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos"
+        local flutter_url
+        case "$ARCH" in
+            arm64)  flutter_url="${flutter_url_base}_arm64_${ver}-stable.zip" ;;
+            x86_64) flutter_url="${flutter_url_base}_${ver}-stable.zip" ;;
+        esac
+        curl -fsSL -o "$tmp/flutter.zip" "$flutter_url"
+        mkdir -p "$parent"
+        unzip -q "$tmp/flutter.zip" -d "$tmp"
+        mv "$tmp/flutter" "$dir"
+        rm -rf "$tmp"
+    fi
+    "$dir/bin/flutter" config --no-analytics >/dev/null
+    "$dir/bin/flutter" precache --macos >/dev/null
+}
+install_flutter "$FLUTTER_VERSION"        /opt/flutter
+install_flutter "$FLUTTER_BRIDGE_VERSION" /opt/flutter-bridge
+
+# ---- 8. vcpkg ----
+VCPKG_DIR=/opt/vcpkg
+if [[ ! -d "$VCPKG_DIR/.git" ]]; then
+    log "Cloning vcpkg"
+    git clone https://github.com/microsoft/vcpkg.git "$VCPKG_DIR"
+fi
+git -C "$VCPKG_DIR" fetch --tags origin
+git -C "$VCPKG_DIR" -c advice.detachedHead=false checkout "$VCPKG_COMMIT"
+[[ -x "$VCPKG_DIR/vcpkg" ]] || "$VCPKG_DIR/bootstrap-vcpkg.sh" -disableMetrics
+
+mkdir -p /var/cache/vcpkg
+chown -R "$SERVICE_USER:staff" /var/cache/vcpkg
+
+# ---- 9. Permissions ----
+log "Setting up permissions for $SERVICE_USER"
+chown -R "$SERVICE_USER:staff" "$CARGO_HOME" "$RUSTUP_HOME" \
+    /opt/flutter /opt/flutter-bridge "$VCPKG_DIR"
+mkdir -p /opt/cargo-tools
+chown -R "$SERVICE_USER:staff" /opt/cargo-tools
+
+git config --system --add safe.directory '*' || true
+
+# ---- 10. act_runner ----
+RUNNER_DIR="/usr/local/var/gitea-runner"
+mkdir -p "$RUNNER_DIR"
+chown -R "$SERVICE_USER:staff" "$RUNNER_DIR"
+
+if [[ ! -x "$RUNNER_DIR/act_runner" ]]; then
+    log "Downloading act_runner $RUNNER_VERSION"
+    case "$ARCH" in
+        arm64)  rarch="arm64" ;;
+        x86_64) rarch="amd64" ;;
+    esac
+    curl -fsSL -o "$RUNNER_DIR/act_runner" \
+        "https://gitea.com/gitea/act_runner/releases/download/v${RUNNER_VERSION}/act_runner-${RUNNER_VERSION}-darwin-${rarch}"
+    chmod +x "$RUNNER_DIR/act_runner"
+    chown "$SERVICE_USER:staff" "$RUNNER_DIR/act_runner"
+fi
+
+if [[ ! -f "$RUNNER_DIR/.runner" ]]; then
+    log "Registering runner with $GITEA_URL"
+    sudo -u "$SERVICE_USER" -H bash -c "
+        cd '$RUNNER_DIR' && \
+        ./act_runner register --no-interactive \
+            --instance '$GITEA_URL' \
+            --token    '$RUNNER_TOKEN' \
+            --name     '$RUNNER_NAME' \
+            --labels   '$RUNNER_LABELS'
+    "
+fi
+
+# ---- 11. launchd service ----
+log "Installing LaunchDaemon"
+PLIST=/Library/LaunchDaemons/com.rustdesk.gitea-runner.plist
+cat > "$PLIST" <<EOF
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>Label</key>
+    <string>com.rustdesk.gitea-runner</string>
+    <key>UserName</key>
+    <string>${SERVICE_USER}</string>
+    <key>WorkingDirectory</key>
+    <string>${RUNNER_DIR}</string>
+    <key>ProgramArguments</key>
+    <array>
+        <string>${RUNNER_DIR}/act_runner</string>
+        <string>daemon</string>
+    </array>
+    <key>EnvironmentVariables</key>
+    <dict>
+        <key>RUSTUP_HOME</key>      <string>${RUSTUP_HOME}</string>
+        <key>CARGO_HOME</key>       <string>${CARGO_HOME}</string>
+        <key>VCPKG_ROOT</key>       <string>${VCPKG_DIR}</string>
+        <key>HOMEBREW_PREFIX</key>  <string>${HOMEBREW_PREFIX}</string>
+        <key>PATH</key>
+        <string>${CARGO_HOME}/bin:/opt/flutter/bin:/opt/cargo-tools/bin:${HOMEBREW_PREFIX}/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
+    </dict>
+    <key>RunAtLoad</key>      <true/>
+    <key>KeepAlive</key>      <true/>
+    <key>StandardOutPath</key><string>${RUNNER_DIR}/stdout.log</string>
+    <key>StandardErrorPath</key><string>${RUNNER_DIR}/stderr.log</string>
+    <key>SoftResourceLimits</key>
+    <dict>
+        <key>NumberOfFiles</key>  <integer>65535</integer>
+    </dict>
+</dict>
+</plist>
+EOF
+chmod 0644 "$PLIST"
+
+launchctl bootout system "$PLIST" 2>/dev/null || true
+launchctl bootstrap system "$PLIST"
+launchctl enable "system/com.rustdesk.gitea-runner"
+
+log "Done."
+echo "    Verify with:    sudo launchctl print system/com.rustdesk.gitea-runner | head"
+echo "    Tail logs with: tail -F $RUNNER_DIR/stderr.log"
+echo "    Runner should appear (online) at $GITEA_URL > Site Admin > Actions > Runners"
diff --git a/ci/runners/windows/provision-builder.ps1 b/ci/runners/windows/provision-builder.ps1
new file mode 100644
index 0000000..a82affc
--- /dev/null
+++ b/ci/runners/windows/provision-builder.ps1
@@ -0,0 +1,324 @@
+# Provisions a Windows host (Windows 10/11 or Server 2019+) as a Gitea Actions
+# runner for RustDesk desktop builds. Idempotent: safe to re-run.
+#
+# Versions are pinned to .gitea/workflows/build-windows.yml. Bump them there and
+# here together.
+#
+# Usage (Administrator PowerShell):
+#   Set-ExecutionPolicy -Scope Process Bypass -Force
+#   .\provision.ps1 -GiteaUrl https://gitea.example.com -RunnerToken <token>
+#
+# By default the runner service is created under a dedicated local user
+# (`gitea-runner`) -- LocalSystem has been observed to break flutter pub get,
+# symlink creation, and git's "dubious ownership" check on this codebase. To
+# opt out, pass `-ServiceAccount LocalSystem` (not recommended).
+
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)] [string] $GiteaUrl,
+    [Parameter(Mandatory = $true)] [string] $RunnerToken,
+    [string] $RunnerName     = "$env:COMPUTERNAME-rustdesk",
+    [string] $RunnerLabels   = "windows-10,self-hosted,X64",
+    [string] $RunnerVersion  = "0.2.11",
+    [string] $ServiceAccount = "gitea-runner",
+    [SecureString] $ServiceAccountPassword
+)
+
+$ErrorActionPreference = 'Stop'
+$ProgressPreference    = 'SilentlyContinue'
+
+# Must run elevated -- nearly every step writes Machine env, HKLM, or service config.
+$me = [Security.Principal.WindowsIdentity]::GetCurrent()
+if (-not (New-Object Security.Principal.WindowsPrincipal $me).IsInRole(
+        [Security.Principal.WindowsBuiltInRole]::Administrator)) {
+    throw 'Run this script in an elevated (Administrator) PowerShell session.'
+}
+
+# --- pinned versions (mirror .gitea/workflows/build-windows.yml env block) ---
+$RUST_VERSION    = '1.75.0'
+$RUST_NIGHTLY    = 'nightly-2023-10-13'
+$LLVM_VERSION    = '15.0.6'
+$FLUTTER_VERSION = '3.24.5'
+$VCPKG_COMMIT    = '120deac3062162151622ca4860575a33844ba10b'
+
+$ToolsRoot = 'C:\tools'
+New-Item -ItemType Directory -Force -Path $ToolsRoot | Out-Null
+
+# Exact-segment-match version of PATH augmentation. Substring matching would
+# falsely find C:\bin when C:\binaries is on PATH.
+function Add-MachinePath([string]$Dir) {
+    $cur = [Environment]::GetEnvironmentVariable('Path', 'Machine')
+    $segments = $cur -split ';' | Where-Object { $_ }
+    if ($segments -notcontains $Dir) {
+        [Environment]::SetEnvironmentVariable('Path', "$cur;$Dir", 'Machine')
+    }
+    if (($env:Path -split ';') -notcontains $Dir) { $env:Path = "$env:Path;$Dir" }
+}
+
+# --- 1. Chocolatey (used for git, python, nuget, 7zip, node, dotnet, ...) ---
+if (-not (Get-Command choco -ErrorAction SilentlyContinue)) {
+    Write-Host '==> Installing Chocolatey'
+    Set-ExecutionPolicy Bypass -Scope Process -Force
+    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+    Invoke-Expression ((New-Object Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
+}
+
+Write-Host '==> Installing base packages'
+# nodejs-lts:      act_runner spawns Node to execute JavaScript actions.
+# powershell-core: workflows use `shell: pwsh` (PS 7), not the OS's PS 5.1.
+# dotnet-sdk:      WiX 4 SDK-style projects (.wixproj) need it for the MSI build.
+choco install -y --no-progress `
+    git python311 nuget.commandline 7zip cmake ninja `
+    nodejs-lts powershell-core dotnet-sdk
+Add-MachinePath 'C:\Program Files\Git\cmd'
+Add-MachinePath 'C:\Program Files\Git\bin'   # bash.exe + posix tools (sed, find, ...)
+Add-MachinePath 'C:\Python311'
+Add-MachinePath 'C:\Python311\Scripts'
+Add-MachinePath 'C:\Program Files\nodejs'
+Add-MachinePath 'C:\Program Files\PowerShell\7'
+Add-MachinePath 'C:\Program Files\dotnet'
+
+# --- 2. Visual Studio 2022 Build Tools (MSVC v143 + Win10 SDK) ---
+# Use [Environment]::GetEnvironmentVariable to avoid the PowerShell parser quirk
+# that mis-tokenises `$env:ProgramFiles(x86)` as `$env:ProgramFiles` + `(x86)`.
+$pfx86       = [Environment]::GetEnvironmentVariable('ProgramFiles(x86)')
+$vsInstaller = Join-Path $pfx86 'Microsoft Visual Studio\Installer\vswhere.exe'
+$vsPresent   = (Test-Path $vsInstaller) -and `
+               ((& $vsInstaller -products '*' -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath) -ne $null)
+if (-not $vsPresent) {
+    Write-Host '==> Installing VS 2022 Build Tools (this takes a while)'
+    $vsBootstrapper = "$env:TEMP\vs_buildtools.exe"
+    Invoke-WebRequest -Uri 'https://aka.ms/vs/17/release/vs_buildtools.exe' -OutFile $vsBootstrapper
+    $vsArgs = @(
+        '--quiet','--wait','--norestart','--nocache',
+        '--add','Microsoft.VisualStudio.Workload.VCTools',
+        '--add','Microsoft.VisualStudio.Component.VC.Tools.x86.x64',
+        '--add','Microsoft.VisualStudio.Component.VC.ATL',
+        '--add','Microsoft.VisualStudio.Component.Windows10SDK.20348',
+        '--add','Microsoft.VisualStudio.Component.VC.CMake.Project',
+        '--includeRecommended'
+    )
+    $p = Start-Process -FilePath $vsBootstrapper -ArgumentList $vsArgs -Wait -PassThru
+    if ($p.ExitCode -notin 0,3010) { throw "VS Build Tools installer exit $($p.ExitCode)" }
+}
+
+# --- 3. Rust (stable + nightly with i686 target) ---
+# Install machine-wide so any user (including the dedicated runner account)
+# shares one toolchain registry. Without this, rustup state lives in the
+# installing user's profile and the service user has no default toolchain.
+$rustupHome = 'C:\rustup'
+$cargoHome  = 'C:\cargo'
+[Environment]::SetEnvironmentVariable('RUSTUP_HOME', $rustupHome, 'Machine')
+[Environment]::SetEnvironmentVariable('CARGO_HOME',  $cargoHome,  'Machine')
+$env:RUSTUP_HOME = $rustupHome
+$env:CARGO_HOME  = $cargoHome
+Add-MachinePath "$cargoHome\bin"
+
+if (-not (Test-Path "$cargoHome\bin\rustup.exe")) {
+    Write-Host '==> Installing rustup (machine-wide at C:\rustup, C:\cargo)'
+    Invoke-WebRequest -Uri 'https://win.rustup.rs/x86_64' -OutFile "$env:TEMP\rustup-init.exe"
+    & "$env:TEMP\rustup-init.exe" -y --default-toolchain none --profile minimal
+}
+rustup toolchain install $RUST_VERSION --profile minimal --component rustfmt
+rustup target add --toolchain $RUST_VERSION x86_64-pc-windows-msvc
+rustup toolchain install $RUST_NIGHTLY --profile minimal --component rustfmt
+rustup target add --toolchain $RUST_NIGHTLY i686-pc-windows-msvc
+rustup default $RUST_VERSION
+
+# --- 4. LLVM/Clang (matches KyleMayes/install-llvm-action layout) ---
+$llvmDir = "$ToolsRoot\llvm-$LLVM_VERSION"
+if (-not (Test-Path "$llvmDir\bin\clang.exe")) {
+    Write-Host "==> Installing LLVM $LLVM_VERSION"
+    $llvmExe = "$env:TEMP\LLVM-$LLVM_VERSION-win64.exe"
+    Invoke-WebRequest -Uri "https://github.com/llvm/llvm-project/releases/download/llvmorg-$LLVM_VERSION/LLVM-$LLVM_VERSION-win64.exe" -OutFile $llvmExe
+    & $llvmExe /S "/D=$llvmDir" | Out-Null
+}
+[Environment]::SetEnvironmentVariable('LIBCLANG_PATH', "$llvmDir\bin", 'Machine')
+Add-MachinePath "$llvmDir\bin"
+
+# --- 5. Flutter (stable channel, with windows precache) ---
+$flutterDir = "$ToolsRoot\flutter"
+if (-not (Test-Path "$flutterDir\bin\flutter.bat")) {
+    Write-Host "==> Installing Flutter $FLUTTER_VERSION"
+    $flutterZip = "$env:TEMP\flutter.zip"
+    Invoke-WebRequest -Uri "https://storage.googleapis.com/flutter_infra_release/releases/stable/windows/flutter_windows_$FLUTTER_VERSION-stable.zip" -OutFile $flutterZip
+    Expand-Archive -Force -Path $flutterZip -DestinationPath $ToolsRoot
+}
+Add-MachinePath "$flutterDir\bin"
+& "$flutterDir\bin\flutter.bat" config --no-analytics | Out-Null
+& "$flutterDir\bin\flutter.bat" precache --windows | Out-Null
+
+# --- 6. vcpkg pinned to commit ---
+$vcpkgDir = 'C:\vcpkg'
+if (-not (Test-Path "$vcpkgDir\.git")) {
+    Write-Host '==> Cloning vcpkg'
+    git clone https://github.com/microsoft/vcpkg.git $vcpkgDir
+}
+Push-Location $vcpkgDir
+git fetch --tags origin
+git -c advice.detachedHead=false checkout $VCPKG_COMMIT
+if (-not (Test-Path "$vcpkgDir\vcpkg.exe")) { & "$vcpkgDir\bootstrap-vcpkg.bat" -disableMetrics }
+Pop-Location
+[Environment]::SetEnvironmentVariable('VCPKG_ROOT', $vcpkgDir, 'Machine')
+Add-MachinePath $vcpkgDir
+
+# --- 7. CI prerequisites that aren't tools, but environmental switches ---
+
+# git's "dubious ownership" check (>= 2.35.2) refuses to operate on a repo whose
+# .git directory is owned by a different user than the one running git. The
+# Flutter SDK at C:\tools\flutter is provisioned by this script as Administrator
+# but the runner service runs as a non-admin user. Trust everything system-wide.
+git config --system --add safe.directory '*' 2>$null
+
+# Flutter on Windows needs SeCreateSymbolicLinkPrivilege to build plugins.
+# Enable Developer Mode (registry) AND grant the privilege via Local Security
+# Policy to the built-in "Users" group (SID S-1-5-32-545). Either alone has been
+# observed to not take effect until logon-token refresh; doing both is
+# belt-and-suspenders. The privilege only reaches a long-running service after
+# a reboot or a fresh service-token issuance.
+$devKey = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock'
+if (-not (Test-Path $devKey)) { New-Item -Path $devKey -Force | Out-Null }
+New-ItemProperty -Path $devKey -Name 'AllowDevelopmentWithoutDevLicense' `
+    -PropertyType DWORD -Value 1 -Force | Out-Null
+
+$secCfg = "$env:TEMP\sec-symlink.cfg"
+secedit /export /cfg $secCfg | Out-Null
+$secContent = Get-Content $secCfg -Raw
+if ($secContent -match 'SeCreateSymbolicLinkPrivilege\s*=\s*([^\r\n]*)') {
+    $cur = $matches[1]
+    if ($cur -notmatch '\*S-1-5-32-545') {
+        $secContent = $secContent -replace `
+            '(SeCreateSymbolicLinkPrivilege\s*=\s*)([^\r\n]*)', `
+            '$1$2,*S-1-5-32-545'
+    }
+} else {
+    $secContent = $secContent -replace `
+        '(\[Privilege Rights\][\r\n]+)', `
+        "`$1SeCreateSymbolicLinkPrivilege = *S-1-5-32-545`r`n"
+}
+$secContent | Set-Content $secCfg
+secedit /configure /db "$env:TEMP\sec-symlink.sdb" /cfg $secCfg /areas USER_RIGHTS /quiet
+Remove-Item $secCfg, "$env:TEMP\sec-symlink.sdb" -ErrorAction SilentlyContinue
+
+# --- 8. Dedicated runner user ---
+# Running as LocalSystem causes a cascade of issues:
+#   - $USERPROFILE = C:\Windows\System32\config\systemprofile, which Flutter,
+#     dart pub, and other POSIX-leaning tools mis-handle.
+#   - cargo install lands binaries in that systemprofile path -> not on PATH.
+#   - flutter/windows occasionally vanishes during long cargo builds.
+# A normal local user fixes all of these.
+if ($ServiceAccount -ne 'LocalSystem') {
+    if (-not (Get-LocalUser -Name $ServiceAccount -ErrorAction SilentlyContinue)) {
+        if (-not $ServiceAccountPassword) {
+            # Generate a 32-byte random password using the OS RNG. Encoded as
+            # base64 (alphanumeric + +/) and trimmed of padding -- meets local
+            # password complexity without needing System.Web (which is missing
+            # on Server Core).
+            $bytes = New-Object byte[] 24
+            [System.Security.Cryptography.RandomNumberGenerator]::Create().GetBytes($bytes)
+            $plain = ([Convert]::ToBase64String($bytes)).TrimEnd('=') + 'A1!'
+            $ServiceAccountPassword = ConvertTo-SecureString $plain -AsPlainText -Force
+            Remove-Variable plain, bytes
+        }
+        Write-Host "==> Creating local user '$ServiceAccount'"
+        New-LocalUser -Name $ServiceAccount -Password $ServiceAccountPassword `
+                      -PasswordNeverExpires -AccountNeverExpires `
+                      -Description 'Gitea Actions runner service account' | Out-Null
+        Add-LocalGroupMember -Group 'Users' -Member $ServiceAccount
+    }
+
+    # Grant "Log on as a service" via secedit (no PS native cmdlet for this).
+    $sid = (Get-LocalUser $ServiceAccount).SID.Value
+    $svcCfg = "$env:TEMP\sec-svc.cfg"
+    secedit /export /cfg $svcCfg | Out-Null
+    $svcContent = Get-Content $svcCfg -Raw
+    if ($svcContent -match "SeServiceLogonRight\s*=\s*([^\r\n]*)") {
+        if ($matches[1] -notmatch [regex]::Escape($sid)) {
+            $svcContent = $svcContent -replace `
+                '(SeServiceLogonRight\s*=\s*)([^\r\n]*)', `
+                "`$1`$2,*$sid"
+        }
+    } else {
+        $svcContent = $svcContent -replace `
+            '(\[Privilege Rights\][\r\n]+)', `
+            "`$1SeServiceLogonRight = *$sid`r`n"
+    }
+    $svcContent | Set-Content $svcCfg
+    secedit /configure /db "$env:TEMP\sec-svc.sdb" /cfg $svcCfg /areas USER_RIGHTS /quiet
+    Remove-Item $svcCfg, "$env:TEMP\sec-svc.sdb" -ErrorAction SilentlyContinue
+
+    # Ensure the user can read/write everything it needs for builds.
+    foreach ($p in @('C:\actions-runner','C:\cargo','C:\cargo-tools','C:\vcpkg','C:\vcpkg-cache')) {
+        New-Item -ItemType Directory -Force -Path $p | Out-Null
+        icacls $p /grant "${ServiceAccount}:(OI)(CI)F" /T 2>$null | Out-Null
+    }
+    foreach ($p in @('C:\rustup','C:\tools')) {
+        if (Test-Path $p) { icacls $p /grant "${ServiceAccount}:(OI)(CI)RX" /T 2>$null | Out-Null }
+    }
+}
+
+# --- 9. Gitea act_runner ---
+$runnerDir = 'C:\actions-runner'
+New-Item -ItemType Directory -Force -Path $runnerDir | Out-Null
+$runnerExe = "$runnerDir\act_runner.exe"
+if (-not (Test-Path $runnerExe)) {
+    Write-Host "==> Downloading act_runner $RunnerVersion"
+    Invoke-WebRequest -Uri "https://gitea.com/gitea/act_runner/releases/download/v$RunnerVersion/act_runner-$RunnerVersion-windows-amd64.exe" -OutFile $runnerExe
+}
+
+Push-Location $runnerDir
+if (-not (Test-Path "$runnerDir\.runner")) {
+    Write-Host '==> Registering runner'
+    & $runnerExe register --no-interactive `
+        --instance $GiteaUrl `
+        --token    $RunnerToken `
+        --name     $RunnerName `
+        --labels   $RunnerLabels
+}
+
+# Reconfigure the service every run so re-running with a different
+# -ServiceAccount actually takes effect.
+$svc = Get-Service -Name 'gitea-act-runner' -ErrorAction SilentlyContinue
+if ($svc) {
+    if ($svc.Status -eq 'Running') { Stop-Service gitea-act-runner }
+} else {
+    Write-Host '==> Installing runner as Windows service'
+    choco install -y --no-progress nssm
+    nssm install gitea-act-runner $runnerExe daemon | Out-Null
+}
+nssm set gitea-act-runner AppDirectory $runnerDir          | Out-Null
+nssm set gitea-act-runner Start         SERVICE_AUTO_START | Out-Null
+nssm set gitea-act-runner AppStdout     "$runnerDir\runner.log" | Out-Null
+nssm set gitea-act-runner AppStderr     "$runnerDir\runner.log" | Out-Null
+
+if ($ServiceAccount -eq 'LocalSystem') {
+    nssm set gitea-act-runner ObjectName 'LocalSystem' | Out-Null
+} else {
+    $bstr = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($ServiceAccountPassword)
+    try {
+        $plain = [System.Runtime.InteropServices.Marshal]::PtrToStringUni($bstr)
+        nssm set gitea-act-runner ObjectName ".\$ServiceAccount" $plain | Out-Null
+    } finally {
+        [System.Runtime.InteropServices.Marshal]::ZeroFreeBSTR($bstr)
+        Remove-Variable plain -ErrorAction SilentlyContinue
+    }
+}
+
+# Start may fail before reboot if the new SeServiceLogonRight hasn't reached
+# SCM yet -- that's expected; the service will start cleanly after reboot.
+try {
+    Start-Service gitea-act-runner
+} catch {
+    Write-Warning "Could not start gitea-act-runner now ($($_.Exception.Message)). It will start on reboot."
+}
+Pop-Location
+
+Write-Host ''
+Write-Host '==> Done.'
+Write-Host '    A reboot is REQUIRED before the first build run, so:'
+Write-Host '      - the runner service inherits the new SeCreateSymbolicLinkPrivilege token'
+Write-Host '      - all PATH/env changes propagate to the SCM-launched service'
+Write-Host '    After reboot, verify the runner shows up in Gitea > Site Admin > Actions > Runners.'
+if ($ServiceAccount -eq 'LocalSystem') {
+    Write-Warning 'Service is running as LocalSystem. RustDesk builds have been observed to fail in this configuration (Flutter pub get, symlinks, dubious ownership). Re-run with -ServiceAccount gitea-runner to switch.'
+}