feat: comprehensive seed, Lucide icons, grouped dashboard nav, API fixes

- Rewrite prisma/seed.ts to populate all 27 models with realistic
  Vietnamese real estate data (8 users with login, 10 properties,
  10 listings, orders, payments, reviews, notifications, etc.)
- Replace all emoji icons with Lucide React SVG icons across frontend
  for consistent rendering, sizing, and accessibility
- Redesign dashboard nav: grouped sidebar with section headers,
  primary/secondary split on desktop, icon-only secondary items
- Replace language switcher flag emoji with Globe icon
- Replace SVG theme toggle with Lucide Moon/Sun icons
- Fix API startup: graceful fallback for Sentry profiling, Google OAuth,
  and Zalo OAuth when credentials are not configured
- Relax rate limiting in development mode (10k req/min)
- Fix listings API to include media[] array in search response
- Add optional chaining for property.media across frontend components
- Update OAuth strategy tests to match graceful fallback behavior

Co-Authored-By: Claude Opus 4 (1M context) <noreply@anthropic.com>

apps/web/components/leads/lead-detail-dialog.tsx

@@ -1,5 +1,6 @@
 'use client';
 
+import { Mail, MessageCircle, Phone } from 'lucide-react';
 import * as React from 'react';
 import { LeadStatusBadge } from '@/components/leads/lead-status-badge';
 import { Button } from '@/components/ui/button';
@@ -151,14 +152,14 @@ export function LeadDetailDialog({ lead, open, onOpenChange }: LeadDetailDialogP
                 href={`tel:${lead.phone}`}
                 className="inline-flex items-center gap-1.5 rounded-md border px-3 py-1.5 text-sm transition-colors hover:bg-accent"
               >
-                📞 Gọi điện
+                <Phone className="h-4 w-4" aria-hidden="true" /> Gọi điện
               </a>
               {lead.email && (
                 <a
                   href={`mailto:${lead.email}`}
                   className="inline-flex items-center gap-1.5 rounded-md border px-3 py-1.5 text-sm transition-colors hover:bg-accent"
                 >
-                  ✉️ Email
+                  <Mail className="h-4 w-4" aria-hidden="true" /> Email
                 </a>
               )}
               <a
@@ -167,7 +168,7 @@ export function LeadDetailDialog({ lead, open, onOpenChange }: LeadDetailDialogP
                 rel="noopener noreferrer"
                 className="inline-flex items-center gap-1.5 rounded-md border px-3 py-1.5 text-sm transition-colors hover:bg-accent"
               >
-                💬 Zalo
+                <MessageCircle className="h-4 w-4" aria-hidden="true" /> Zalo
               </a>
             </div>
           </div>