feat: bulk XML upload, period selector, and session persistence

- Add bulk XML CFDI upload support (up to 300MB)
- Add period selector component for month/year navigation
- Fix session persistence on page refresh (Zustand hydration)
- Fix income/expense classification based on tenant RFC
- Fix IVA calculation from XML (correct Impuestos element)
- Add error handling to reportes page
- Support multiple CORS origins
- Update reportes service with proper Decimal/BigInt handling
- Add RFC to tenant view store for proper CFDI classification
- Update README with changelog and new features

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/services/auth.service.ts

@@ -78,6 +78,7 @@ export async function register(data: RegisterRequest): Promise<LoginResponse> {
       role: user.role,
       tenantId: tenant.id,
       tenantName: tenant.nombre,
+      tenantRfc: tenant.rfc,
     },
   };
 }
@@ -140,6 +141,7 @@ export async function login(data: LoginRequest): Promise<LoginResponse> {
       role: user.role,
       tenantId: user.tenantId,
       tenantName: user.tenant.nombre,
+      tenantRfc: user.tenant.rfc,
     },
   };
 }