chore: app dir headers re-implementation (#4751)

* chore: header refactor.

* fix: core imports

* chore: refactor profile activity header and fix all other header imports.

* fix: import fixes

* chore: header refactor.

* fix: app dir header reimplementation

* fix: removing parllel headers

* fix: adding route groups to handle pages

* fix: disabling sentry for temp

* chore: update default exports in layouts & headers for consistency.

* fix: bugfixes

* fix: build errors

---------

Co-authored-by: sriram veeraghanta <veeraghanta.sriram@gmail.com>

web/app/[workspaceSlug]/(projects)/profile/[userId]/activity/page.tsx

@@ -0,0 +1,72 @@
+"use client";
+
+import { useState } from "react";
+import { observer } from "mobx-react";
+import { useParams } from "next/navigation";
+// ui
+import { Button } from "@plane/ui";
+// components
+import { DownloadActivityButton, WorkspaceActivityListPage } from "@/components/profile";
+// constants
+import { EUserWorkspaceRoles } from "@/constants/workspace";
+// hooks
+import { useUser } from "@/hooks/store";
+
+const PER_PAGE = 100;
+
+const ProfileActivityPage = observer(() => {
+  // states
+  const [pageCount, setPageCount] = useState(1);
+  const [totalPages, setTotalPages] = useState(0);
+  const [resultsCount, setResultsCount] = useState(0);
+  // router
+
+  const { userId } = useParams();
+  // store hooks
+  const { data: currentUser } = useUser();
+  const {
+    membership: { currentWorkspaceRole },
+  } = useUser();
+
+  const updateTotalPages = (count: number) => setTotalPages(count);
+
+  const updateResultsCount = (count: number) => setResultsCount(count);
+
+  const handleLoadMore = () => setPageCount((prev) => prev + 1);
+
+  const activityPages: JSX.Element[] = [];
+  for (let i = 0; i < pageCount; i++)
+    activityPages.push(
+      <WorkspaceActivityListPage
+        key={i}
+        cursor={`${PER_PAGE}:${i}:0`}
+        perPage={PER_PAGE}
+        updateResultsCount={updateResultsCount}
+        updateTotalPages={updateTotalPages}
+      />
+    );
+
+  const canDownloadActivity =
+    currentUser?.id === userId && !!currentWorkspaceRole && currentWorkspaceRole >= EUserWorkspaceRoles.MEMBER;
+
+  return (
+    <div className="flex h-full w-full flex-col overflow-hidden py-5">
+      <div className="flex items-center justify-between gap-2 px-5 md:px-9">
+        <h3 className="text-lg font-medium">Recent activity</h3>
+        {canDownloadActivity && <DownloadActivityButton />}
+      </div>
+      <div className="vertical-scrollbar scrollbar-md flex h-full flex-col overflow-y-auto px-5 md:px-9">
+        {activityPages}
+        {pageCount < totalPages && resultsCount !== 0 && (
+          <div className="flex w-full items-center justify-center text-xs">
+            <Button variant="accent-primary" size="sm" onClick={handleLoadMore}>
+              Load more
+            </Button>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+});
+
+export default ProfileActivityPage;