fix(invite): 修正邀请接口路径以支持小程序专用前缀

- 将请求邀请信息接口路径改为使用 /api/_app 前缀，确保小程序免登录访问
- 修改接受邀请接口路径，统一使用小程序专用 API 域名和前缀
- 更新邀请相关接口注释，明确小程序专用接口前缀含义
- 在专家历史数据中添加高级开发工程师 Will 的条目并更新时间戳

.workbuddy/expert-history.json

@@ -11,7 +11,18 @@
         "usedAt": 1775908159660,
         "industryId": "all"
       }
+    ],
+    "751f0e28e31849adb28b750fe4cdcde7": [
+      {
+        "expertId": "SeniorDeveloper",
+        "name": "Will",
+        "profession": "高级开发工程师",
+        "avatarUrl": "https://acc-1258344699.cos.accelerate.myqcloud.com/workbuddy/experts/avatars/02-Engineering/SeniorDeveloper/SeniorDeveloper.png",
+        "promptUrl": "https://acc-1258344699.cos.accelerate.myqcloud.com/workbuddy/experts/experts/02-Engineering/SeniorDeveloper/SeniorDeveloper_zh.md",
+        "usedAt": 1775908159660,
+        "industryId": "all"
+      }
     ]
   },
-  "lastUpdated": 1775908297489
+  "lastUpdated": 1775908690098
 }