Add rental system: listings, bookings, payments, payouts, reviews

Full rental marketplace with 6 categories (apartment, house, car, motorcycle, bicycle, ebike).
Booking workflow: create → confirm → pay → active → complete → payout.
Landlord dashboard, admin moderation, availability calendar, Stripe Connect payouts.
14 QA bugs found and fixed including validator schemas, API response types, HTTP methods.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/middleware/checkBanned.ts

@@ -0,0 +1,24 @@
+import type { Request, Response, NextFunction } from 'express';
+import { prisma } from '../config/database.js';
+
+export async function checkBanned(req: Request, res: Response, next: NextFunction): Promise<void> {
+  if (!req.userId) {
+    next();
+    return;
+  }
+
+  const user = await prisma.user.findUnique({
+    where: { id: req.userId },
+    select: { isBanned: true, banReason: true },
+  });
+
+  if (user?.isBanned) {
+    res.status(403).json({
+      message: 'Account suspended',
+      reason: user.banReason || 'Your account has been suspended. Contact support for more information.',
+    });
+    return;
+  }
+
+  next();
+}