Close the web-feasible 100% gaps: REST write/token API, tickets, draw-badge, /me, sanitisation, dusk, radio SSE

Final parity push (web-tier only):
- REST API write + token auth: POST /api/tokens (issue a personal_access_token
  for the session user), Bearer auth via src/lib/api-auth.ts, POST
  /api/articles/[slug]/comment, GET/DELETE /api/me/tokens, full tickets API
  (/api/tickets +[id] +[id]/reply), radio current-dj/points/points-leaderboard/
  embed-config + POST shouts, and a real-time /api/radio/stream (SSE). 31 public
  API routes total.
- Pages: /draw-badge (buy a custom profile badge → credits + RCON), /me
  dashboard (stats + online friends + referral claim). Wired into the nav.
- HTML sanitisation (sanitize-html) — the HTMLPurifier equivalent — applied to
  writeable boxes + article bodies before dangerouslySetInnerHTML.
- "Dusk" dark theme preset + a default-dark site option honoured by the
  no-flash boot script.

Verified live (prod, amx_test): token issue → Bearer endpoint 200, no-token
401; /api/me/tokens lists it; current-dj/leaderboard JSON; /me + /draw-badge
200; reverted the test user + tokens. tsc 0, vitest 49/49, next build 0.

src/app/api/tickets/[id]/reply/route.ts

@@ -0,0 +1,65 @@
+// Public REST API — post a reply to a help-center ticket.
+//
+// Bearer-authed. POST inserts a reply ({ content }) authored by the current user
+// into website_help_center_ticket_replies. The target ticket must exist and
+// belong to the authed user. Fail-soft: never a 500.
+
+import { apiError, apiJson } from "@/lib/api";
+import { bearerUserId } from "@/lib/api-auth";
+import { prisma } from "@/lib/prisma";
+
+export const dynamic = "force-dynamic";
+
+// POST /api/tickets/:id/reply  body: { content }
+export async function POST(req: Request, { params }: { params: Promise<{ id: string }> }) {
+  const uid = await bearerUserId(req);
+  if (!uid) return apiError("Unauthorized", 401);
+
+  const { id } = await params;
+  if (!/^\d+$/.test(id)) return apiError("Invalid ticket id");
+  const ticketId = BigInt(id);
+
+  const body = (await req.json().catch(() => ({}))) as { content?: unknown };
+  const content = String(body.content ?? "").trim().slice(0, 5000);
+  if (!content) return apiError("Content is required");
+
+  try {
+    // Ownership check — only the ticket owner may reply.
+    const ticket = await prisma.websiteHelpCenterTickets.findUnique({
+      where: { id: ticketId },
+      select: { id: true, userId: true },
+    });
+    if (!ticket || ticket.userId !== uid) return apiError("Ticket not found", 404);
+
+    const now = new Date();
+    const reply = await prisma.websiteHelpCenterTicketReplies.create({
+      data: {
+        ticketId,
+        userId: uid,
+        content,
+        createdAt: now,
+        updatedAt: now,
+      },
+      select: { id: true, userId: true, content: true, createdAt: true },
+    });
+
+    // Touch the parent ticket so its updatedAt reflects the latest activity.
+    prisma.websiteHelpCenterTickets
+      .update({ where: { id: ticketId }, data: { updatedAt: now }, select: { id: true } })
+      .catch(() => {});
+
+    return apiJson(
+      {
+        reply: {
+          id: reply.id,
+          userId: reply.userId,
+          content: reply.content,
+          createdAt: reply.createdAt,
+        },
+      },
+      { status: 201 },
+    );
+  } catch {
+    return apiError("Failed to post reply", 503);
+  }
+}