feat: add subscribe message push and refactor HTTP layer

src/main/resources/application.yml

@@ -1,6 +1,6 @@
-
 server:
   port: 8080
+
 spring:
   application:
     name: mini_program
@@ -13,20 +13,15 @@ spring:
 # 微信小程序配置
 wx:
   miniapp:
-    # 小程序AppID
     appid: wx50fe0c5c28dd3060
-    # 小程序AppSecret
     secret: e82fa407fad13a9df35503f2d176e5a4
-  corp: # 企业ID
-      corpid: ww257614cff8a1b61b
-      # 应用Secret
-      corpsecret: 2B0TAefYVewqjVHprLdGJQ8fNHz1drJq6235xN-mqNI
-      # 审批模板ID
-      approval-template-id: C4ej9uEntM19iNJbrtJsUqZakPFfjBNTPNLSKPno2
-      # 审批回调URL（可选）
-      callback-url: http://your-domain.com/api/wx-corp/approval-callback
-      # 审批申请人用户ID（提交审批的企微用户）
-      creator-userid: i
+    subscribe-template-id: Csf_dJU7DhvVFt_03sphPPBCGlnmcWQSPhgqfxHZ5RQ
+  corp:
+    corpid: ww257614cff8a1b61b
+    corpsecret: 2B0TAefYVewqjVHprLdGJQ8fNHz1drJq6235xN-mqNI
+    approval-template-id: C4ej9uEntM19iNJbrtJsUqZakPFfjBNTPNLSKPno2
+    callback-url: http://your-domain.com/api/wx-corp/approval-callback
+    creator-userid: i
 
 # MyBatis配置
 mybatis:
@@ -34,5 +29,3 @@ mybatis:
   type-aliases-package: com.example.mini_program.entity
   configuration:
     map-underscore-to-camel-case: true
-
-# 企业微信配置