fix: 补齐候选诊断环境与证据保护（09-06-release-gate-integrity）

scripts/qa/pwa-cross-version-fixture.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+
+PWA_FIXTURE_ROOT=""
+
+pwa_build_candidate() {
+  local client_dir="$1"
+  local label="$2"
+  local build_sha="$3"
+  local output_dir="$4"
+  local log_file="$5"
+  local build_status=0
+
+  (
+    cd "$client_dir"
+    VITE_BUILD_SHA="$build_sha" npx vite build --outDir "$output_dir" --emptyOutDir
+  ) > "$log_file" 2>&1 || build_status="$?"
+
+  if [[ "$build_status" -ne 0 ]]; then
+    echo "[pwa-cross-version][ERROR] build=${label} exit=${build_status}" >&2
+    return "$build_status"
+  fi
+  if [[ ! -f "$output_dir/index.html" || ! -f "$output_dir/sw.js" ]]; then
+    echo "[pwa-cross-version][ERROR] build=${label} required_artifact_missing" >&2
+    return 1
+  fi
+  echo "[pwa-cross-version] build=${label} status=PASS"
+}
+
+pwa_prepare_fixture() {
+  local client_dir="$1"
+  local report_dir="$2"
+  if [[ -n "$PWA_FIXTURE_ROOT" ]]; then
+    echo "[pwa-cross-version][ERROR] fixture_already_owned" >&2
+    return 1
+  fi
+  mkdir -p "$report_dir" || return "$?"
+  PWA_FIXTURE_ROOT="$(mktemp -d "${TMPDIR:-/tmp}/hyb-pwa-cross-version.XXXXXX")" || return "$?"
+  PWA_BUILD_A_DIR="$PWA_FIXTURE_ROOT/build-a"
+  PWA_BUILD_B_DIR="$PWA_FIXTURE_ROOT/build-b"
+  PWA_BUILD_A_SHA="111111111111"
+  PWA_BUILD_B_SHA="222222222222"
+  pwa_build_candidate "$client_dir" A "$PWA_BUILD_A_SHA" "$PWA_BUILD_A_DIR" "$report_dir/pwa-build-a.log" || return "$?"
+  pwa_build_candidate "$client_dir" B "$PWA_BUILD_B_SHA" "$PWA_BUILD_B_DIR" "$report_dir/pwa-build-b.log" || return "$?"
+}
+
+pwa_with_fixture() {
+  if [[ -z "$PWA_FIXTURE_ROOT" || ! -f "${PWA_BUILD_A_DIR:-}/sw.js" || ! -f "${PWA_BUILD_B_DIR:-}/sw.js" ]]; then
+    echo "[pwa-cross-version][ERROR] fixture_not_ready" >&2
+    return 1
+  fi
+  PWA_BUILD_A_DIR="$PWA_BUILD_A_DIR" PWA_BUILD_B_DIR="$PWA_BUILD_B_DIR" \
+    PWA_BUILD_A_SHA="$PWA_BUILD_A_SHA" PWA_BUILD_B_SHA="$PWA_BUILD_B_SHA" "$@"
+}
+
+pwa_cleanup_fixture() {
+  if [[ -z "$PWA_FIXTURE_ROOT" ]]; then
+    return 0
+  fi
+  if [[ "$(basename "$PWA_FIXTURE_ROOT")" != hyb-pwa-cross-version.* ]]; then
+    echo "[pwa-cross-version][ERROR] fixture_cleanup_refused" >&2
+    return 1
+  fi
+  if [[ -d "$PWA_FIXTURE_ROOT" ]]; then
+    find "$PWA_FIXTURE_ROOT" -xdev -depth -delete || return "$?"
+  fi
+  PWA_FIXTURE_ROOT=""
+}