fix: spoof ollama streaming responses for tool calls

test/integration.proxy.test.ts

@@ -62,20 +62,36 @@ describe('Proxy Integration Test', () => {
     });
   });
 
-  it('rejects streaming requests cleanly', async () => {
+  it('spoofs streaming responses for stream=true requests', async () => {
     const requestFixturePath = path.join(__dirname, 'fixtures', 'openclaw-like-request.json');
+    const responseFixturePath = path.join(__dirname, 'fixtures', 'ollama-xml-response.json');
     const requestJson = JSON.parse(fs.readFileSync(requestFixturePath, 'utf8'));
+    const responseJson = JSON.parse(fs.readFileSync(responseFixturePath, 'utf8'));
     requestJson.stream = true;
 
+    (global.fetch as any).mockResolvedValue({
+      ok: true,
+      text: async () => JSON.stringify(responseJson),
+      json: async () => responseJson
+    });
+
     const response = await server.inject({
       method: 'POST',
       url: '/api/chat',
       payload: requestJson
     });
 
-    expect(response.statusCode).toBe(400);
-    const body = JSON.parse(response.payload);
-    expect(body.error).toContain('Streaming is not supported');
-    expect(global.fetch).not.toHaveBeenCalled();
+    expect(response.statusCode).toBe(200);
+    expect(response.headers['content-type']).toContain('text/event-stream');
+    expect(global.fetch).toHaveBeenCalledTimes(1);
+
+    const fetchArgs = (global.fetch as any).mock.calls[0];
+    const upstreamBody = JSON.parse(fetchArgs[1].body);
+    expect(upstreamBody.stream).toBe(false);
+
+    expect(response.payload).toContain('"role":"assistant"');
+    expect(response.payload).toContain('"tool_calls"');
+    expect(response.payload).toContain('"finish_reason":"tool_calls"');
+    expect(response.payload).toContain('data: [DONE]');
   });
 });