feat: shop buy, forum replies, tickets, messages, sessions, and UX hardening

Complete remaining product gaps: credit-based shop purchases, guild thread replies, help ticket detail/reply/close, offline message compose, sign-out-everywhere via JWT version, ads delete confirm, soft-fail feedback, rate limits, loading states, and single auth() in site layout.

Co-authored-by: Cursor <[email protected]>

src/app/(site)/help/tickets/page.tsx

@@ -1,3 +1,4 @@
+import Link from "next/link";
 import { redirect } from "next/navigation";
 import { getTranslations } from "next-intl/server";
 import type { CSSProperties } from "react";
@@ -136,8 +137,12 @@ export default async function HelpTicketsPage({
 						<tbody>
 							{tickets.map((t2) => (
 								<tr key={String(t2.id)}>
-									<td>{String(t2.id)}</td>
-									<td>{t2.title}</td>
+									<td>
+										<Link href={`/help/tickets/${t2.id}`}>{String(t2.id)}</Link>
+									</td>
+									<td>
+										<Link href={`/help/tickets/${t2.id}`}>{t2.title}</Link>
+									</td>
 									<td>
 										<span className={`online-badge${t2.open ? " online" : ""}`}>
 											<span className="online-dot" aria-hidden />