添加聊天框消息解析功能；优化请求头处理；更新部分 api base url

src/components/chat/chatMessageSections.test.ts

@@ -0,0 +1,43 @@
+import { parseAssistantMessageSections } from "./chatMessageSections";
+
+describe("parseAssistantMessageSections", () => {
+  it("returns plain assistant content when there is no thought block", () => {
+    expect(parseAssistantMessageSections("直接回答")).toEqual({
+      answer: "直接回答",
+      thought: null,
+      thoughtComplete: false,
+    });
+  });
+
+  it("extracts a completed thought block and keeps the final answer visible", () => {
+    expect(
+      parseAssistantMessageSections("<think>先分析需求</think>\n\n最终回答"),
+    ).toEqual({
+      answer: "最终回答",
+      thought: "先分析需求",
+      thoughtComplete: true,
+    });
+  });
+
+  it("supports streaming thought content before the closing tag arrives", () => {
+    expect(
+      parseAssistantMessageSections("准备中...\n<think>继续推理中"),
+    ).toEqual({
+      answer: "准备中...",
+      thought: "继续推理中",
+      thoughtComplete: false,
+    });
+  });
+
+  it("merges multiple thought blocks into a single collapsed section", () => {
+    expect(
+      parseAssistantMessageSections(
+        "<think>第一段思考</think>\n答案开头\n<think>第二段思考</think>\n答案结尾",
+      ),
+    ).toEqual({
+      answer: "答案开头\n\n答案结尾",
+      thought: "第一段思考\n\n第二段思考",
+      thoughtComplete: true,
+    });
+  });
+});