Add userDismissedAt field to agents schema

packages/web/src/lib/utils.ts

@@ -4,3 +4,40 @@ import { twMerge } from "tailwind-merge";
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
 }
+
+/**
+ * Format a date as relative time (e.g., "2 minutes ago", "1 hour ago")
+ */
+export function formatRelativeTime(dateString: string): string {
+  const date = new Date(dateString);
+  const now = new Date();
+  const diffInMs = now.getTime() - date.getTime();
+  const diffInSeconds = Math.floor(diffInMs / 1000);
+
+  if (diffInSeconds < 60) {
+    return diffInSeconds <= 1 ? "just now" : `${diffInSeconds} seconds ago`;
+  }
+
+  const diffInMinutes = Math.floor(diffInSeconds / 60);
+  if (diffInMinutes < 60) {
+    return diffInMinutes === 1 ? "1 minute ago" : `${diffInMinutes} minutes ago`;
+  }
+
+  const diffInHours = Math.floor(diffInMinutes / 60);
+  if (diffInHours < 24) {
+    return diffInHours === 1 ? "1 hour ago" : `${diffInHours} hours ago`;
+  }
+
+  const diffInDays = Math.floor(diffInHours / 24);
+  if (diffInDays < 30) {
+    return diffInDays === 1 ? "1 day ago" : `${diffInDays} days ago`;
+  }
+
+  const diffInMonths = Math.floor(diffInDays / 30);
+  if (diffInMonths < 12) {
+    return diffInMonths === 1 ? "1 month ago" : `${diffInMonths} months ago`;
+  }
+
+  const diffInYears = Math.floor(diffInMonths / 12);
+  return diffInYears === 1 ? "1 year ago" : `${diffInYears} years ago`;
+}