Add area assignment to internaciones and permission controls

- Add areaId field to Internacion type and database schema
- Add area selection in NuevoIngreso, EditIngreso, and Internaciones forms
- Filter out 'Fuera de area' from area selection dropdowns
- Add permission controls for users to only edit internaciones in their area
- Add canEdit check to hide 'Editar Ingreso' button in HistoriaClinica
- Fix getInternacionAreaId to use new areaId field first, fallback to cama area
- Add INSERT OR IGNORE to prevent duplicate errors

src/types/index.ts

@@ -40,6 +40,7 @@ export interface Internacion {
   id: string;
   pacienteId: string;
   camaId: string;
+  areaId: string;
   fechaIngresoHospital?: string;
   fechaIngresoClinica?: string;
   fechaEgreso?: string;