feat(inbox): add Caixa de Entrada page for managing companion notifications

- Create inbox page with pending items management:
  - InboxCard: displays notification summary with parsed data
  - InboxDetailsDialog: view full notification details
  - ProcessDialog: convert notification to transaction (lancamento)

- Add server actions for inbox operations:
  - getInboxItems: fetch pending inbox items
  - processInboxItem: create lancamento from inbox item
  - discardInboxItem: discard unwanted notifications

- Add navigation link to sidebar under 'Gestão Financeira'
- Add revalidation config for inbox-related paths

components/caixa-de-entrada/inbox-card.tsx

@@ -0,0 +1,135 @@
+"use client";
+
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader } from "@/components/ui/card";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+import { formatDistanceToNow } from "date-fns";
+import { ptBR } from "date-fns/locale";
+import {
+  RiCheckLine,
+  RiDeleteBinLine,
+  RiEyeLine,
+  RiMoreLine,
+  RiSmartphoneLine,
+} from "@remixicon/react";
+import type { InboxItem } from "./types";
+
+interface InboxCardProps {
+  item: InboxItem;
+  onProcess: (item: InboxItem) => void;
+  onDiscard: (item: InboxItem) => void;
+  onViewDetails: (item: InboxItem) => void;
+}
+
+export function InboxCard({
+  item,
+  onProcess,
+  onDiscard,
+  onViewDetails,
+}: InboxCardProps) {
+  const formattedAmount = item.parsedAmount
+    ? new Intl.NumberFormat("pt-BR", {
+        style: "currency",
+        currency: "BRL",
+      }).format(parseFloat(item.parsedAmount))
+    : null;
+
+  const timeAgo = formatDistanceToNow(new Date(item.notificationTimestamp), {
+    addSuffix: true,
+    locale: ptBR,
+  });
+
+  return (
+    <Card className="flex flex-col">
+      <CardHeader className="flex flex-row items-start justify-between gap-2 pb-2">
+        <div className="flex items-center gap-2">
+          <RiSmartphoneLine className="size-4 text-muted-foreground" />
+          <span className="text-sm font-medium">
+            {item.sourceAppName || item.sourceApp}
+          </span>
+        </div>
+        <div className="flex items-center gap-2">
+          {formattedAmount && (
+            <Badge
+              variant={
+                item.parsedTransactionType === "Receita"
+                  ? "success"
+                  : "destructive"
+              }
+            >
+              {formattedAmount}
+            </Badge>
+          )}
+          <DropdownMenu>
+            <DropdownMenuTrigger asChild>
+              <Button variant="ghost" size="icon" className="size-8">
+                <RiMoreLine className="size-4" />
+              </Button>
+            </DropdownMenuTrigger>
+            <DropdownMenuContent align="end">
+              <DropdownMenuItem onClick={() => onViewDetails(item)}>
+                <RiEyeLine className="mr-2 size-4" />
+                Ver detalhes
+              </DropdownMenuItem>
+              <DropdownMenuItem onClick={() => onProcess(item)}>
+                <RiCheckLine className="mr-2 size-4" />
+                Processar
+              </DropdownMenuItem>
+              <DropdownMenuItem
+                onClick={() => onDiscard(item)}
+                className="text-destructive"
+              >
+                <RiDeleteBinLine className="mr-2 size-4" />
+                Descartar
+              </DropdownMenuItem>
+            </DropdownMenuContent>
+          </DropdownMenu>
+        </div>
+      </CardHeader>
+
+      <CardContent className="flex flex-1 flex-col gap-3">
+        <div className="flex-1">
+          {item.parsedName && (
+            <p className="font-medium">{item.parsedName}</p>
+          )}
+          <p className="line-clamp-2 text-sm text-muted-foreground">
+            {item.originalText}
+          </p>
+        </div>
+
+        <div className="flex items-center justify-between">
+          <span className="text-xs text-muted-foreground">{timeAgo}</span>
+          {item.parsedCardLastDigits && (
+            <span className="text-xs text-muted-foreground">
+              •••• {item.parsedCardLastDigits}
+            </span>
+          )}
+        </div>
+
+        <div className="flex gap-2">
+          <Button
+            size="sm"
+            className="flex-1"
+            onClick={() => onProcess(item)}
+          >
+            <RiCheckLine className="mr-1 size-4" />
+            Processar
+          </Button>
+          <Button
+            size="sm"
+            variant="outline"
+            onClick={() => onDiscard(item)}
+          >
+            <RiDeleteBinLine className="size-4" />
+          </Button>
+        </div>
+      </CardContent>
+    </Card>
+  );
+}