Harden CMS security and theme contrast

src/lib/admin/notice.ts

@@ -0,0 +1,26 @@
+export interface AdminMutationNotice {
+  tone: "ok" | "danger";
+  label: "Saved" | "Error";
+  message: string;
+}
+
+export function adminMutationNotice(params: {
+  saved?: string;
+  error?: string;
+}): AdminMutationNotice | null {
+  if (params.error) {
+    return {
+      tone: "danger",
+      label: "Error",
+      message: "The operation could not be completed.",
+    };
+  }
+  if (params.saved === "1") {
+    return {
+      tone: "ok",
+      label: "Saved",
+      message: "Changes were saved successfully.",
+    };
+  }
+  return null;
+}