v3: the profile page is split by one rule, and what it re-invented is shared across the app — UserPublicProfile was 1,949 lines because it held its data, six tabs, seven subcomponents and hand-rolled copies of things the app already had or repeated elsewhere. The page now only picks the tab and puts the pieces together (253 lines); useProfile holds the user and the three lists with their live sync, cache and scroll; each tab and header piece is one file under components/profile/; the followed and invitees tabs load on first open through the new useFetchState, keyed by username, which keeps them across tab switches. Every piece taken out replaces its copies: DumpCardList, which reads the votes from WSContext, is every list of dump cards (the index feeds, followed, search, related dumps, UserDumps, UserUpvoted, the profile), so Index no longer threads vote props into the feeds; PlaylistCardList every list of playlist cards; FeedFooter the eight sentinel/loading-more/end blocks; ListState the loading/error/empty chains; Segmented the settings toggles, RoleSwitcher and the playlist edit form, with SegmentedField built on it; LoadMoreButton the three load-more buttons; NewDumpButton UserDumps' and the profile's; useScrollRestore four copies of the scroll restore, and the profile uses useScrollSave instead of saving its whole cache on every scroll. useFading takes an onFaded callback, which replaces PlaylistDetail's copy of its timers; useUpvotedList is the vote tracking UserUpvoted and the profile each had, and a withdrawn upvote now leaves the list and the cache once faded (it was only hidden, and came back after a tab switch). usePlaylistMemberships is the membership load and toggle AddToPlaylistModal and DumpCreateModal each had. pagedList.ts (PagedList, firstPage, restoredList, fetchFirstPage, withFirst), fetchPublicUser and dataOr are shared by the profile, UserPlaylists and useUserDumpFeed; a refused side list still shows empty, as documented, and only the user fails the page. FollowedFeed's two sections are one local hook, and its readPage is expectOk. A card is its owner's when the item is the signed-in user's, everywhere: the profile's upvoted column marked every dump as the owner's on one's own profile. No message changed; the catalogs only move their references. 643 frontend tests pass (11 new for useFetchState, useFading's onFaded and pagedList), and tsc, eslint, doc:lint, deno check and deno fmt are clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/profile/ProfileOwnActions.tsx

@@ -0,0 +1,119 @@
+/**
+ * Renders the actions of the signed-in user's own profile header: inviting
+ * someone, and whatever the header adds, the log out button.
+ *
+ * @module
+ */
+
+import { useState } from "react";
+import { t } from "@lingui/core/macro";
+import { Trans } from "@lingui/react/macro";
+import { API_URL } from "../../config/api.ts";
+import { useAuth } from "../../hooks/auth/useAuth.ts";
+import { useHeightTransition } from "../../hooks/shared/useHeightTransition.ts";
+import { ErrorCard } from "../shared/ErrorCard.tsx";
+
+/**
+ * Renders the "Invite someone" button, then `children`, the log out button.
+ * Each opening of the panel creates a new single-use invite link, for
+ * `/register`.
+ */
+export function ProfileOwnActions(
+  { children }: { children: React.ReactNode },
+): React.JSX.Element {
+  const { authFetch } = useAuth();
+  const [inviteUrl, setInviteUrl] = useState<string | null>(null);
+  const [pending, setPending] = useState(false);
+  const [copied, setCopied] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const ref = useHeightTransition<HTMLDivElement>(
+    (inviteUrl ?? "") + (error ?? ""),
+  );
+
+  async function toggle() {
+    setError(null);
+    setCopied(false);
+    if (inviteUrl) {
+      setInviteUrl(null);
+      return;
+    }
+    setPending(true);
+    try {
+      const res = await authFetch(`${API_URL}/api/invites`, { method: "POST" });
+      const body = await res.json();
+      if (body.success) {
+        setInviteUrl(
+          `${globalThis.location.origin}/register?token=${body.data.token}`,
+        );
+      } else {
+        setError(t`Failed to generate invite`);
+      }
+    } catch {
+      setError(t`Failed to generate invite`);
+    } finally {
+      setPending(false);
+    }
+  }
+
+  async function copy() {
+    if (!inviteUrl) return;
+    try {
+      await navigator.clipboard.writeText(inviteUrl);
+      setCopied(true);
+      setTimeout(() => setCopied(false), 2000);
+    } catch {
+      // The clipboard is denied outside a secure context. The link can still
+      // be selected by hand.
+    }
+  }
+
+  return (
+    <div className="profile-own-actions" ref={ref}>
+      <div className="profile-own-actions-row">
+        <button
+          type="button"
+          className="invite-btn"
+          onClick={toggle}
+          disabled={pending}
+          aria-expanded={inviteUrl !== null}
+        >
+          <Trans>+ Invite someone</Trans>
+        </button>
+        {children}
+      </div>
+      {inviteUrl && (
+        <div
+          className="invite-panel animate-in"
+          role="group"
+          aria-label={t`Invite link`}
+        >
+          <input
+            className="invite-url"
+            type="text"
+            readOnly
+            value={inviteUrl}
+            aria-label={t`Invite link`}
+            onFocus={(e) => e.currentTarget.select()}
+          />
+          <button
+            type="button"
+            className={`invite-copy-btn${
+              copied ? " invite-copy-btn--done" : ""
+            }`}
+            onClick={copy}
+          >
+            {copied ? t`Copied!` : t`Copy`}
+          </button>
+          <span className="invite-panel-hint">
+            <Trans>Single use, valid for 7 days.</Trans>
+          </span>
+        </div>
+      )}
+      {error && (
+        <div className="invite-panel invite-panel--error animate-in">
+          <ErrorCard title={t`Failed to generate invite`} message={error} />
+        </div>
+      )}
+    </div>
+  );
+}