feat(timeline): add pulse animation for in-flight drag mutations

Allocation bars that have active optimistic overrides (post-drag,
awaiting server confirmation) now pulse subtly via animate-pulse.
The pending set is derived from the existing optimisticAllocations
map keys, requiring no additional state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/src/components/admin/UsersClient.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { useState, useMemo } from "react";
-import { SystemRole, PermissionKey, ROLE_DEFAULT_PERMISSIONS, type PermissionOverrides } from "@capakraken/shared";
+import { SystemRole, PermissionKey, ROLE_DEFAULT_PERMISSIONS, MILLISECONDS_PER_DAY, type PermissionOverrides } from "@capakraken/shared";
 import { trpc } from "~/lib/trpc/client.js";
 import { AnimatedModal } from "~/components/ui/AnimatedModal.js";
 import { InviteUserModal } from "./InviteUserModal.js";
@@ -422,7 +422,7 @@ export function UsersClient() {
     const diff = Date.now() - d.getTime();
     if (diff < 60_000) return "Just now";
     if (diff < 3_600_000) return `${Math.floor(diff / 60_000)}m ago`;
-    if (diff < 86_400_000) return `${Math.floor(diff / 3_600_000)}h ago`;
+    if (diff < MILLISECONDS_PER_DAY) return `${Math.floor(diff / 3_600_000)}h ago`;
     return d.toLocaleDateString("en-GB", { day: "2-digit", month: "short", year: "numeric" });
   }