feat: implement absence management features in the dashboard

- Added functionality for managing absence requests, including listing, approving, and rejecting requests.
- Enhanced the user interface to display statistics and pending requests for better oversight.
- Updated backend schema to support absence requests and notifications, ensuring data integrity and efficient handling.
- Integrated new components for absence request forms and approval workflows, improving user experience and administrative efficiency.

packages/backend/convex/schema.ts

@@ -266,6 +266,42 @@ export default defineSchema({
     .index("by_destinatario", ["destinatarioId"])
     .index("by_destinatario_and_lida", ["destinatarioId", "lida"]),
 
+  // Solicitações de Ausências
+  solicitacoesAusencias: defineTable({
+    funcionarioId: v.id("funcionarios"),
+    dataInicio: v.string(),
+    dataFim: v.string(),
+    motivo: v.string(),
+    status: v.union(
+      v.literal("aguardando_aprovacao"),
+      v.literal("aprovado"),
+      v.literal("reprovado")
+    ),
+    gestorId: v.optional(v.id("usuarios")),
+    dataAprovacao: v.optional(v.number()),
+    dataReprovacao: v.optional(v.number()),
+    motivoReprovacao: v.optional(v.string()),
+    observacao: v.optional(v.string()),
+    criadoEm: v.number(),
+  })
+    .index("by_funcionario", ["funcionarioId"])
+    .index("by_status", ["status"])
+    .index("by_funcionario_and_status", ["funcionarioId", "status"]),
+
+  notificacoesAusencias: defineTable({
+    destinatarioId: v.id("usuarios"),
+    solicitacaoAusenciaId: v.id("solicitacoesAusencias"),
+    tipo: v.union(
+      v.literal("nova_solicitacao"),
+      v.literal("aprovado"),
+      v.literal("reprovado")
+    ),
+    lida: v.boolean(),
+    mensagem: v.string(),
+  })
+    .index("by_destinatario", ["destinatarioId"])
+    .index("by_destinatario_and_lida", ["destinatarioId", "lida"]),
+
   // Períodos aquisitivos e saldos de férias
   periodosAquisitivos: defineTable({
     funcionarioId: v.id("funcionarios"),