feat(agent-browser): add opt-in preview data injection

tests/unit/pi-product-tools.test.ts

@@ -296,6 +296,33 @@ describe('PI-090 product tools', () => {
     expect((await attachments.read('attachment-a')).data.toString()).toBe('png-data');
   });
 
+  it('forwards the explicit preview data opt-in from the agent browser tool', async () => {
+    const root = await temporaryRoot('makelore-pi-browser-preview-tool-');
+    const attachments = new CodingAttachmentStore(path.join(root, 'attachments'));
+    const open = vi.fn().mockResolvedValue({
+      browserId: 'browser-a', projectId: 'project-a', projectPath: root,
+      state: 'attached', generation: 1, url: 'http://127.0.0.1:4173/', title: 'App',
+      visible: false, bounds: null, canGoBack: false, canGoForward: false, eventCursor: 0,
+    });
+    const browser = { open } as unknown as AgentBrowserModule;
+    const tools = new PiProductTools({
+      browser,
+      attachments,
+      bundledSkillsDir: path.resolve('resources/coding-skills'),
+    });
+
+    await tools.execute('agent_browser', {
+      conversationId: 'conversation-a', runId: 'run-a', resourceId: 'browser-a',
+      projectId: 'project-a', projectPath: root, skillIds: [],
+    }, { action: 'open', url: 'http://127.0.0.1:4173/', injectProjectData: true });
+
+    expect(open).toHaveBeenCalledWith(expect.objectContaining({
+      projectId: 'project-a', projectPath: root,
+      url: 'http://127.0.0.1:4173/', visible: false,
+      injectProjectData: true,
+    }));
+  });
+
   it('loads game asset review state through the vendor-neutral product module', async () => {
     const root = await temporaryRoot('makelore-pi-game-tool-');
     await writeFile(path.join(root, 'ASSET_PLAN.md'), [