fix29: удалён legacy, введён Debian 13-only и обновлён rollback

tools/README.md

@@ -13,7 +13,7 @@ reboot_module     -> awg2-reboot-scheduler
 
 ## Поддерживаемая build-среда
 
-- Debian/Ubuntu с `apt`.
+- Debian 13 с `apt`.
 - amd64/x86_64.
 - Rust toolchain из `rust-toolchain.toml` (`1.95.0` в текущем дереве).
 - `Cargo.lock` обязателен: build gate работает в `--locked` режиме.

tools/build.sh

@@ -125,19 +125,23 @@ setup_root_runner() {
 }
 
 ensure_supported_host() {
-  if [[ -f /etc/os-release ]]; then
-    # shellcheck disable=SC1091
-    source /etc/os-release
-    case "${ID:-}" in
-      debian|ubuntu) ;;
-      *) echo "Unsupported OS: ${ID:-unknown}. Only Debian/Ubuntu are supported."; exit 1 ;;
-    esac
+  if [[ ! -f /etc/os-release ]]; then
+    echo "Unsupported OS: missing /etc/os-release. Only Debian 13 amd64 is supported."
+    exit 1
+  fi
+
+  # shellcheck disable=SC1091
+  source /etc/os-release
+
+  if [[ "${ID:-}" != "debian" || "${VERSION_ID:-}" != "13" ]]; then
+    echo "Unsupported OS: ${PRETTY_NAME:-unknown}. Only Debian 13 amd64 is supported."
+    exit 1
   fi
 
   local arch
-  arch="$(uname -m)"
-  if [[ "$arch" != "x86_64" && "$arch" != "amd64" ]]; then
-    echo "Unsupported arch: $arch. Only amd64/x86_64 is supported."
+  arch="$(dpkg --print-architecture 2>/dev/null || uname -m)"
+  if [[ "$arch" != "amd64" && "$arch" != "x86_64" ]]; then
+    echo "Unsupported arch: $arch. Only amd64 is supported."
     exit 1
   fi
 }
@@ -366,6 +370,33 @@ if command -v systemctl >/dev/null 2>&1; then
   systemctl daemon-reload || true
 fi
 
+exit 0
+EOF
+
+  cat >"$staging/DEBIAN/preinst" <<'EOF'
+#!/bin/sh
+set -e
+
+if [ ! -r /etc/os-release ]; then
+  echo "awg2-harness supports only Debian 13 amd64" >&2
+  exit 1
+fi
+
+. /etc/os-release
+
+if [ "${ID:-}" != "debian" ] || [ "${VERSION_ID:-}" != "13" ]; then
+  echo "awg2-harness supports only Debian 13 amd64; got ${PRETTY_NAME:-unknown}" >&2
+  exit 1
+fi
+
+if command -v dpkg >/dev/null 2>&1; then
+  arch="$(dpkg --print-architecture)"
+  if [ "$arch" != "amd64" ]; then
+    echo "awg2-harness supports only amd64; got $arch" >&2
+    exit 1
+  fi
+fi
+
 exit 0
 EOF
 
@@ -380,7 +411,7 @@ fi
 exit 0
 EOF
 
-  chmod 0755 "$staging/DEBIAN/postinst" "$staging/DEBIAN/postrm"
+  chmod 0755 "$staging/DEBIAN/preinst" "$staging/DEBIAN/postinst" "$staging/DEBIAN/postrm"
 
   mkdir -p "$DIST_DIR"
   local pkg_name