feat(admin): 管理后台 - 统一桌面端信息架构与视觉规范

web/src/pages/admin/components/admin-announcement-safety.ts

@@ -0,0 +1,56 @@
+const ANNOUNCEMENT_REVIEW_STORAGE_KEY = "yingce.admin.announcements.pending-review";
+
+export type AnnouncementPendingReview = {
+    operation: "create" | "update" | "close";
+    targetId?: string;
+    previousTitle?: string;
+    title: string;
+    content: string;
+    level: "info" | "success" | "warning" | "critical";
+    notice: string;
+    requestedAt: string;
+};
+
+export function readAnnouncementPendingReview(): AnnouncementPendingReview | null {
+    if (typeof window === "undefined") return null;
+    try {
+        const value = window.sessionStorage.getItem(ANNOUNCEMENT_REVIEW_STORAGE_KEY);
+        if (!value) return null;
+        const parsed = JSON.parse(value) as Partial<AnnouncementPendingReview>;
+        if (
+            (parsed.operation !== "create" && parsed.operation !== "update" && parsed.operation !== "close") ||
+            typeof parsed.title !== "string" ||
+            typeof parsed.content !== "string" ||
+            (parsed.level !== "info" && parsed.level !== "success" && parsed.level !== "warning" && parsed.level !== "critical") ||
+            typeof parsed.notice !== "string" ||
+            !parsed.notice ||
+            typeof parsed.requestedAt !== "string" ||
+            Number.isNaN(new Date(parsed.requestedAt).getTime()) ||
+            (parsed.targetId !== undefined && (typeof parsed.targetId !== "string" || !parsed.targetId)) ||
+            (parsed.previousTitle !== undefined && typeof parsed.previousTitle !== "string") ||
+            (parsed.operation !== "create" && (typeof parsed.targetId !== "string" || !parsed.targetId))
+        )
+            return null;
+        return parsed as AnnouncementPendingReview;
+    } catch {
+        return null;
+    }
+}
+
+export function writeAnnouncementPendingReview(review: AnnouncementPendingReview) {
+    if (typeof window === "undefined") return;
+    try {
+        window.sessionStorage.setItem(ANNOUNCEMENT_REVIEW_STORAGE_KEY, JSON.stringify(review));
+    } catch {
+        // sessionStorage 可能被浏览器策略禁用；页内锁定仍然保持生效。
+    }
+}
+
+export function clearAnnouncementPendingReview() {
+    if (typeof window === "undefined") return;
+    try {
+        window.sessionStorage.removeItem(ANNOUNCEMENT_REVIEW_STORAGE_KEY);
+    } catch {
+        // 同上，不让存储策略影响已确认的界面操作。
+    }
+}