feat(chat): 优化聊天面板交互体验 — 推理折叠/智能滚动/工具中文名/代码块按钮

tests/web/components/chat/ToolPart.test.tsx

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+import { screen } from "@testing-library/react";
+import { describe, expect, test } from "bun:test";
+import { createElement } from "react";
+
+import { ToolPart } from "../../../../src/web/consoles/workbench/components/chat/parts/ToolPart";
+import { renderWithProviders } from "../../test-utils";
+
+describe("ToolPart 工具显示名", () => {
+  test("无 toolMetadata 时使用 toolName", () => {
+    const part = {
+      input: { timezone: "Asia/Shanghai" },
+      output: { iso: "2024-01-01T00:00:00.000Z", local: "2024年1月1日", timestamp: 1704067200000 },
+      toolCallId: "call-1",
+      toolName: "getCurrentTime",
+      type: "tool-getCurrentTime",
+    };
+
+    renderWithProviders(createElement(ToolPart, { part }));
+
+    expect(screen.getByText(/getCurrentTime/)).toBeTruthy();
+  });
+
+  test("有 toolMetadata.displayName 时优先使用显示名", () => {
+    const part = {
+      input: { timezone: "Asia/Shanghai" },
+      output: { iso: "2024-01-01T00:00:00.000Z", local: "2024年1月1日", timestamp: 1704067200000 },
+      toolCallId: "call-1",
+      toolMetadata: { displayName: "获取当前时间" },
+      toolName: "getCurrentTime",
+      type: "tool-getCurrentTime",
+    };
+
+    renderWithProviders(createElement(ToolPart, { part }));
+
+    expect(screen.getByText("获取当前时间")).toBeTruthy();
+    expect(screen.queryByText(/getCurrentTime/)).toBeNull();
+  });
+
+  test("toolMetadata.displayName 非字符串时回退到 toolName", () => {
+    const part = {
+      input: {},
+      output: {},
+      toolCallId: "call-2",
+      toolMetadata: { displayName: 123 },
+      type: "tool-someTool",
+    };
+
+    renderWithProviders(createElement(ToolPart, { part }));
+
+    expect(screen.getByText("someTool")).toBeTruthy();
+  });
+
+  test("错误状态时使用显示名", () => {
+    const part = {
+      errorText: "超时",
+      toolCallId: "call-3",
+      toolMetadata: { displayName: "获取当前时间" },
+      type: "tool-getCurrentTime",
+    };
+
+    renderWithProviders(createElement(ToolPart, { part }));
+
+    expect(screen.getByText(/获取当前时间.*失败/)).toBeTruthy();
+  });
+});