Added a warning regarding using vercel hosting

README.md

@@ -80,6 +80,13 @@ The fastest and easiest way to run Orbit is through **Planetary Cloud** — our
 
 ### One-Click Deploy to Vercel
 
+> [!WARNING]
+> **We strongly recommend using Planetary Cloud instead of Vercel.**
+> 
+> Vercel's serverless architecture introduces real limitations that affect Orbit's reliability — including cold starts, execution timeouts, and constraints on long-running processes like session handling and activity tracking. You may run into hard-to-debug issues that simply don't exist on Planetary Cloud.
+>
+> **[Planetary Cloud](https://planetaryapp.us) is free, purpose-built for Orbit, and works out of the box — no configuration needed.** We can't guarantee a great experience on Vercel, and support for Vercel-specific issues is limited.
+
 Prefer to host on your own Vercel account? Deploy in seconds:
 
 <a href="https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2FPlanetaryOrbit%2Forbit&env=SESSION_SECRET,DATABASE_URL&build-command=npx%20prisma%20db%20push%20%26%26%20npx%20prisma%20generate%20%26%26%20npx%20next%20build%20--webpack">

components/profile/activity.tsx

@@ -1,29 +1,16 @@
-import React, { Fragment, useEffect, useState, useMemo } from "react";
-import { useRecoilState, useRecoilValue } from "recoil";
+import { Fragment, useEffect, useState } from "react";
+import { useRecoilState } from "recoil";
 import { workspacestate } from "@/state";
-import { themeState } from "@/state/theme";
 import { FC } from "@/types/settingsComponent";
-import { Chart, ChartData, ScatterDataPoint } from "chart.js";
-import { Line } from "react-chartjs-2";
 import type { ActivitySession, Quota, inactivityNotice } from "@prisma/client";
-import Tooltip from "@/components/tooltip";
 import moment from "moment";
 import { Dialog, Transition, Tab } from "@headlessui/react";
-import Button from "../button";
 import {
-  IconMessages,
-  IconMoon,
-  IconPlayerPlay,
-  IconWalk,
   IconCalendarTime,
   IconChartBar,
-  IconUsers,
-  IconClipboardList,
   IconAdjustments,
   IconChevronLeft,
   IconChevronRight,
-  IconCalendar,
-  IconClock,
   IconCalendarEvent,
   IconTarget,
 } from "@tabler/icons-react";