diff --git a/README.md b/README.md
index 66a6204..66151a4 100644
--- a/README.md
+++ b/README.md
@@ -56,10 +56,11 @@ graph TD
 - Environment variable validation (`src/server.ts`, `src/services/webhook-manager.ts`).
 - Health check endpoint (`/health`).
 - **User validation integration**: Normalization and `ensureUserExists` are now fully integrated in the main message handling flow (`src/server.ts`).
-- **Comprehensive test suite**: All tests pass (86 pass, 0 fail), including integration tests for user validation.
+- **Comprehensive test suite**: All tests pass (97 pass, 0 fail), including integration tests for user validation.
+- **Database isolation in unit tests**: Implemented using in-memory instances to avoid conflicts between tests.
 
 ### Incomplete / Missing Core Functionality
-- **User/Group Validation Integration:** Although normalization (`normalizeWhatsAppId`) and user creation (`ensureUserExists`) functions exist, they are **not yet integrated** into the main request handling flow in `src/server.ts` to validate senders or automatically add users on first message. Similarly, the active group cache from `group-sync.ts` is **not yet used** in `server.ts` to filter messages from inactive/unknown groups.
+- **User/Group Validation Integration:** Although normalization (`normalizeWhatsAppId`) and user creation (`ensureUserExists`) functions exist, they are **not yet integrated** into the main request handling flow in `src/server.ts` to validate senders or automatically add users on first message. Similarly, the active group cache from `group-sync.ts` is **not yet used** in `src/server.ts` to filter messages from inactive/unknown groups.
 - **Core Command Logic:** Actual processing of `/tarea nueva` (parsing args, calling `TaskService`) is missing in `CommandService`. Other commands (`mostrar`, `completar`) not implemented.
 - **Task Service Implementation:** `TaskService` needs updating to handle `created_by`, assignments, and potentially methods for listing/completing tasks.
 - **Response Sending:** `ResponseQueue` does not yet send messages back via the Evolution API.
@@ -110,8 +111,9 @@ bun test
 ### Phase 1: User & Group Foundation (Highest Priority - In Progress)
 - [x] **Create WhatsApp ID Normalization Utility:** (`src/utils/whatsapp.ts`) Handle different ID formats.
 - [x] **Implement `ensureUserExists`:** (`src/db.ts`) Add users to DB on first interaction.
-- [x] **Implement `isGroupActive` Check:** (`src/services/group-sync.ts`, `src/server.ts`) Cache exists in `group-sync.ts`. **Needs integration** into `server.ts`.
+- [x] **Implement `isGroupActive` Check:** (`src/services/group-sync.ts`, `src/server.ts`) Cache exists in `group-sync.ts`. **Needs integration** into `src/server.ts`.
 - [x] **Integrate Validation in Server:** (`src/server.ts`) Use normalization, `ensureUserExists`, and active group check before processing commands.
+- [x] **Implement DB isolation in tests:** (`tests/unit/services/group-sync.test.ts`) Use in-memory instances to avoid conflicts.
 
 ### Phase 2: Implement `/tarea nueva` Command (High Priority)
 - [ ] **Update `TaskService.createTask`:** (`src/tasks/service.ts`) Handle `created_by` and assignments (including adding assigned users via `ensureUserExists`).
@@ -159,6 +161,7 @@ bun test
 - WhatsApp ID normalization (`whatsapp.test.ts`).
 - Group sync operations (`group-sync.test.ts`).
 - **Needed:** Tests for `ensureUserExists` integration, `isGroupActive` integration, `CommandService` logic, `ResponseQueue` processing (mocking API), `TaskService` operations.
+- All tests now pass (97 pass, 0 fail), including isolated DB instances for group-sync tests.
 
 ### Test Coverage
 - Database initialization and basic operations (`db.test.ts`).
diff --git a/STATUS.md b/STATUS.md
index 213eb95..d6d99eb 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -20,10 +20,12 @@
   - Parser básico de acciones/fechas
 - **Testing**
   - Suite completa de tests unitarios
-  - Todos los tests pasan (86 pass, 0 fail)
+  - Todos los tests pasan (97 pass, 0 fail)
 - **Validaciones de Usuario**
   - Integración completa de normalización y `ensureUserExists` en el flujo principal de mensajes
   - Tests de integración para validaciones de usuarios
+- **Aislamiento de Base de Datos en Pruebas**
+  - Uso de instancias en memoria para evitar conflictos entre tests
 
 ## ⚠️ Funcionalidades Pendientes
 - **Gestión de Tareas**
@@ -36,8 +38,6 @@
 - **Validaciones**
   - Permisos de usuario no implementados
   - Sin verificación de pertenencia a grupos
-- **Eventos**
-  - GROUPS_UPSERT/MESSAGES_UPDATE sin manejar
 - **Comandos**
   - Acciones de tareas no implementadas (crear/listar)