fix: normalize ollama tool calls from content and thinking

test/xml-toolcall.test.ts

@@ -45,4 +45,17 @@ hello
     const result = parseXmlToolCalls(content);
     expect(result).toHaveLength(0);
   });
+
+  it('parses JSON tool calls wrapped in tool_call tags', () => {
+    const content = `
+<tool_call>
+{"name":"read","arguments":{"path":"/tmp/test.txt"}}
+</tool_call>
+    `;
+
+    const result = parseXmlToolCalls(content);
+    expect(result).toHaveLength(1);
+    expect(result[0].name).toBe('read');
+    expect(result[0].args).toEqual({ path: '/tmp/test.txt' });
+  });
 });