feat(market): add Minha Intenções tab with panel, hook, and badge

- Introduced "Minhas Intenções" tab visible only to logged-in users.
- Integrated MyPurchaseIntentionsPanel and useMyPurchaseIntentions hook.
- Added tab badge showing count of pending intentions.
- Extended session API to include user’s main character for downstream features.

components/marketplace/AdCard.tsx

@@ -4,7 +4,7 @@ import { useState, useEffect } from "react";
 import { Card, CardContent, CardFooter, CardHeader } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
-import { Heart, Clock, Eye, Star, MapPin, DollarSign, Coins, RefreshCw, ShoppingCart, TrendingUp, User } from "lucide-react";
+import { Heart, Clock, Eye, Star, MapPin, DollarSign, Coins, RefreshCw, ShoppingCart, TrendingUp, User, MessageCircle } from "lucide-react";
 import { useAdTracking, useMarketTelemetry } from "@/lib/hooks/use-telemetry";
 import { useSession } from "@/lib/hooks/use-session";
 import { useQueryClient } from "@tanstack/react-query";
@@ -15,6 +15,7 @@ import { BidModal } from "./BidModal";
 import { SellerInfo } from "./SellerInfo";
 import { ListingDetailsModal } from "./ListingDetailsModal";
 import { AuctionCountdown } from "./AuctionCountdown";
+import { ChatModal } from "@/components/chat/ChatModal";
 
 // Função auxiliar para formatar tempo relativo
 function formatTimeAgo(date: Date): string {
@@ -66,6 +67,7 @@ interface Listing {
   item_category?: string | null;
   // Campo do vendedor
   seller_character_name?: string | null;
+  has_pending_intention_for_current_user?: boolean;
 }
 
 interface PriceInfo {
@@ -88,6 +90,7 @@ export function AdCard({ listing, viewMode = "grid" }: AdCardProps) {
   const [showPurchaseModal, setShowPurchaseModal] = useState(false);
   const [showBidModal, setShowBidModal] = useState(false);
   const [showDetailsModal, setShowDetailsModal] = useState(false);
+  const [showChatModal, setShowChatModal] = useState(false);
 
   const invalidateCache = () => {
     queryClient.invalidateQueries({ queryKey: ["listings"] });
@@ -261,6 +264,7 @@ export function AdCard({ listing, viewMode = "grid" }: AdCardProps) {
   const timeAgo = formatTimeAgo(new Date(listing.created_at));
   const availablePrices = getAvailablePrices();
   const isSold = listing.listing_status === "sold";
+  const hasPendingIntention = Boolean(listing.has_pending_intention_for_current_user);
 
   // Função para obter URL da imagem do item
   const getItemImageUrl = (): string => {
@@ -662,6 +666,20 @@ export function AdCard({ listing, viewMode = "grid" }: AdCardProps) {
                         Comprar
                       </Button>
                     )}
+                    {user && user.userId !== listing.seller_id && !isSold && (
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        className="transition-all duration-200 hover:scale-105"
+                        onClick={(e) => {
+                          e.stopPropagation();
+                          setShowChatModal(true);
+                        }}
+                      >
+                        <MessageCircle className="h-4 w-4 mr-2" />
+                        Chat
+                      </Button>
+                    )}
                   </div>
                 )}
                 {isSold && (
@@ -932,15 +950,40 @@ export function AdCard({ listing, viewMode = "grid" }: AdCardProps) {
               <Button
                 variant="default"
                 size="sm"
+                className={cn(
+                  "flex-1 transition-all duration-200 hover:scale-105",
+                  (isSold || hasPendingIntention) && "opacity-60 cursor-not-allowed hover:scale-100"
+                )}
+                onClick={(e) => {
+                  e.stopPropagation();
+                  if (hasPendingIntention) {
+                    return;
+                  }
+                  setShowPurchaseModal(true);
+                }}
+                disabled={isSold || hasPendingIntention}
+                title={
+                  hasPendingIntention
+                    ? "Você já enviou uma intenção para este anúncio. Gerencie em Minhas intenções."
+                    : undefined
+                }
+              >
+                <ShoppingCart className="h-4 w-4 mr-2" />
+                {hasPendingIntention ? "Intenção pendente" : "Comprar"}
+              </Button>
+            )}
+            {user && user.userId !== listing.seller_id && !isSold && (
+              <Button
+                variant="outline"
+                size="sm"
                 className="flex-1 transition-all duration-200 hover:scale-105"
                 onClick={(e) => {
                   e.stopPropagation();
-                  setShowPurchaseModal(true);
+                  setShowChatModal(true);
                 }}
-                disabled={isSold}
               >
-                <ShoppingCart className="h-4 w-4 mr-2" />
-                Comprar
+                <MessageCircle className="h-4 w-4 mr-2" />
+                Chat
               </Button>
             )}
           </>
@@ -1021,6 +1064,13 @@ export function AdCard({ listing, viewMode = "grid" }: AdCardProps) {
         onActivate={handleActivate}
         onCancel={handleCancel}
       />
+      {user && user.userId !== listing.seller_id && (
+        <ChatModal
+          open={showChatModal}
+          onOpenChange={setShowChatModal}
+          listingId={listing.listing_id}
+        />
+      )}
     </Card>
   );
 }