feat: 提升并发容量默认配置

ai_knowledge_base_v2/apps/backend/tests/test_production_readiness.py

@@ -27,6 +27,7 @@ from app.services.security_state_service import SecurityStateService
 from app.services.auth_service import AuthService
 from app.services.model_service import ModelClientService
 from app.core.observability import RequestObservabilityMiddleware
+from app.core.config import Settings
 
 
 @pytest.fixture(autouse=True)
@@ -43,6 +44,14 @@ def test_secret_is_encrypted_and_masked():
     assert SecretService.masked(encrypted) == MASKED_SECRET
 
 
+def test_production_chat_capacity_defaults_cover_expected_burst():
+    settings = Settings(_env_file=None)
+
+    assert settings.chat_max_active_requests == 30
+    assert settings.chat_max_queue_size == 90
+    assert settings.chat_queue_timeout_seconds == 90
+
+
 def test_migration_revision_ids_fit_default_alembic_version_column():
     versions_dir = Path(__file__).parents[1] / "alembic" / "versions"
     revision_pattern = re.compile(r'^revision\s*=\s*["\']([^"\']+)', re.MULTILINE)