1. Add 登陆功能

2. 调整字体大小
3. 新增部分功能

tests/test_celery_tasks.py

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+"""Tests for Celery task infrastructure.
+
+Verifies Celery app configuration and task registration without
+starting a real worker or connecting to Redis.
+"""
+
+
+def test_celery_app_uses_redis_broker():
+    """Celery broker URL must be a Redis URL built from settings."""
+    from app.infrastructure.tasks.celery_app import celery_app
+    assert celery_app.conf.broker_url.startswith("redis://")
+
+
+def test_celery_app_uses_redis_backend():
+    """Celery result backend must be Redis."""
+    from app.infrastructure.tasks.celery_app import celery_app
+    assert celery_app.conf.result_backend.startswith("redis://")
+
+
+def test_celery_app_has_json_serializer():
+    """Task serializer must be JSON for portability."""
+    from app.infrastructure.tasks.celery_app import celery_app
+    assert celery_app.conf.task_serializer == "json"
+
+
+def test_process_document_task_is_registered():
+    """process_document_task must be discoverable in the Celery task registry."""
+    import app.infrastructure.tasks.document_tasks  # noqa: F401 — triggers task registration
+    from app.infrastructure.tasks.celery_app import celery_app
+    registered = list(celery_app.tasks.keys())
+    assert any("process_document_task" in name for name in registered), (
+        f"process_document_task not found in {registered}"
+    )
+
+
+def test_document_command_service_has_process_document():
+    """DocumentCommandService must expose _process_document method."""
+    from app.application.documents.services import DocumentCommandService
+    assert hasattr(DocumentCommandService, "_process_document")
+
+
+def test_document_command_service_has_store_document():
+    """DocumentCommandService must expose store_document method."""
+    from app.application.documents.services import DocumentCommandService
+    assert hasattr(DocumentCommandService, "store_document")