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/types.ts

@@ -0,0 +1,49 @@
+/**
+ * Types for Caixa de Entrada (Inbox) feature
+ */
+
+export interface InboxItem {
+  id: string;
+  sourceApp: string;
+  sourceAppName: string | null;
+  deviceId: string | null;
+  originalTitle: string | null;
+  originalText: string;
+  notificationTimestamp: Date;
+  parsedName: string | null;
+  parsedAmount: string | null;
+  parsedDate: Date | null;
+  parsedCardLastDigits: string | null;
+  parsedTransactionType: string | null;
+  status: string;
+  lancamentoId: string | null;
+  processedAt: Date | null;
+  discardedAt: Date | null;
+  discardReason: string | null;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export interface ProcessInboxInput {
+  inboxItemId: string;
+  name: string;
+  amount: number;
+  purchaseDate: string;
+  transactionType: "Despesa" | "Receita";
+  condition: string;
+  paymentMethod: string;
+  categoriaId: string;
+  contaId?: string;
+  cartaoId?: string;
+  note?: string;
+}
+
+export interface DiscardInboxInput {
+  inboxItemId: string;
+  reason?: string;
+}
+
+export interface SelectOption {
+  id: string;
+  name: string;
+}