feat(api): 重构 API 调用并优化用户认证流程

- 新增 auth、forum 和 user API 文件夹,重新组织 API 调用结构
- 重构 AuthContext,使用新 API 进行用户认证和信息管理
- 更新 AdminPanel、ForumPage 等组件,使用新的 API 调用
- 删除旧的 authApi.js 文件,清理冗余代码
- 优化用户登录、注册和登出流程,改进错误处理和用户提示

Change-Id: If664193e1bf30036c197f164edc5b10df75f1331
diff --git a/src/api/forum.js b/src/api/forum.js
new file mode 100644
index 0000000..61518be
--- /dev/null
+++ b/src/api/forum.js
@@ -0,0 +1,31 @@
+import request from "@/utils/request";
+
+// 帖子相关API
+export const createPost = (params) => {
+  return request.post("/posts/create", {...params});
+};
+
+export const getPosts = (params) => {
+  return request.get("/posts/list", {params});
+};
+
+export const deletePost = (username, pid) => {
+  return request.delete("/posts/delete", {
+    data: { username, pid },
+  });
+};
+
+// 评论相关API
+export const addComment = (params) => {
+  return request.post("/comment/add", {...params});
+};
+
+export const getComments = (params) => {
+  return request.get('/comment/get', {params});
+};
+
+export const deleteComment = (username, commentId) => {
+  return request.delete("/comment/delete", {
+    data: { username, commentId },
+  });
+}; 
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