Show tool execution messages in AI agent chat (#13117)

https://github.com/user-attachments/assets/c0a42726-50ac-496e-a993-9d6076a84a6a

---------

Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-server/src/engine/workspace-manager/__tests__/workspace-manager.service.spec.ts

@@ -6,6 +6,7 @@ import { Repository } from 'typeorm';
 import { FeatureFlagService } from 'src/engine/core-modules/feature-flag/services/feature-flag.service';
 import { UserWorkspace } from 'src/engine/core-modules/user-workspace/user-workspace.entity';
 import { Workspace } from 'src/engine/core-modules/workspace/workspace.entity';
+import { AgentService } from 'src/engine/metadata-modules/agent/agent.service';
 import { DataSourceEntity } from 'src/engine/metadata-modules/data-source/data-source.entity';
 import { DataSourceService } from 'src/engine/metadata-modules/data-source/data-source.service';
 import { FieldMetadataEntity } from 'src/engine/metadata-modules/field-metadata/field-metadata.entity';
@@ -115,6 +116,14 @@ describe('WorkspaceManagerService', () => {
             deleteObjectsMetadata: jest.fn(),
           },
         },
+        {
+          provide: AgentService,
+          useValue: {
+            createOneAgent: jest
+              .fn()
+              .mockResolvedValue({ id: 'mock-agent-id' }),
+          },
+        },
       ],
     }).compile();