wip: agui integration

tests/renderer/navigation/useChatMessageSender.test.tsx

@@ -0,0 +1,58 @@
+import { describe, expect, it, vi } from 'vitest';
+import { act, renderHook } from '@testing-library/react';
+import { useChatMessageSender } from '../../../src/renderer/navigation/useChatMessageSender';
+
+describe('useChatMessageSender', () => {
+  it('sends message and clears error on success', async () => {
+    const chatService = {
+      sendMessage: vi.fn().mockResolvedValue({ success: true, message: 'ok' }),
+    };
+
+    const { result } = renderHook(() => useChatMessageSender({ chatService }));
+
+    let response: Awaited<ReturnType<typeof result.current.sendMessage>> | null = null;
+    await act(async () => {
+      response = await result.current.sendMessage({
+        conversationId: 'conv-1',
+        message: 'hello',
+      });
+    });
+
+    expect(response?.success).toBe(true);
+    expect(response?.message).toBe('ok');
+    expect(result.current.lastError).toBeNull();
+  });
+
+  it('stores normalized error when send fails', async () => {
+    const chatService = {
+      sendMessage: vi.fn().mockResolvedValue({ success: false, error: 'boom' }),
+    };
+
+    const { result } = renderHook(() => useChatMessageSender({ chatService }));
+
+    await act(async () => {
+      await result.current.sendMessage({
+        conversationId: 'conv-1',
+        message: 'hello',
+      });
+    });
+
+    expect(result.current.lastError).toBe('boom');
+  });
+
+  it('returns default error when service is unavailable', async () => {
+    const { result } = renderHook(() => useChatMessageSender({ chatService: null }));
+
+    let response: Awaited<ReturnType<typeof result.current.sendMessage>> | null = null;
+    await act(async () => {
+      response = await result.current.sendMessage({
+        conversationId: 'conv-1',
+        message: 'hello',
+      });
+    });
+
+    expect(response?.success).toBe(false);
+    expect(response?.error).toContain('Chat service unavailable');
+    expect(result.current.lastError).toContain('Chat service unavailable');
+  });
+});