feat: 根据OpenClaw dmPolicy重新设计配对规则

- 更新数据库表结构，添加dm_policy字段（pairing/allowlist/open/disabled）
- 添加allow_from字段用于白名单配置
- 添加openclaw_gateway_url和openclaw_gateway_token字段
- 更新Java实体类WeComBot，支持新的配对策略
- 更新测试数据，包含四种配对策略的示例
- 删除旧的pairing_mode字段，使用标准的OpenClaw dmPolicy

backend/src/main/java/com/wecom/WeComMiddlewareApplication.java

@@ -2,24 +2,12 @@ package com.wecom;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication
-@RestController
+@EnableScheduling
 public class WeComMiddlewareApplication {
-    
     public static void main(String[] args) {
         SpringApplication.run(WeComMiddlewareApplication.class, args);
     }
-    
-    @GetMapping("/")
-    public String home() {
-        return "WeCom Middleware Backend is running!";
-    }
-    
-    @GetMapping("/api/system/health")
-    public String health() {
-        return "{\"status\":\"UP\"}";
-    }
 }

backend/src/main/java/com/wecom/entity/WeComBot.java

@@ -0,0 +1,86 @@
+package com.wecom.entity;
+
+import com.baomidou.mybatisplus.annotation.*;
+import lombok.Data;
+import java.time.LocalDateTime;
+
+/**
+ * 企业微信Bot配置实体
+ */
+@Data
+@TableName("wecom_bots")
+public class WeComBot {
+    
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    
+    @TableField("name")
+    private String name;
+    
+    @TableField("bot_id")
+    private String botId;
+    
+    @TableField("secret")
+    private String secret;
+    
+    /**
+     * 配对策略:
+     * pairing - 默认：未知发送者会收到配对码；所有者必须批准
+     * allowlist - 仅允许 allowFrom（或已配对的允许存储）中的发送者
+     * open - 允许所有入站私聊
+     * disabled - 忽略所有入站私聊
+     */
+    @TableField("dm_policy")
+    private String dmPolicy;
+    
+    /**
+     * 允许列表(JSON数组)，dm_policy=allowlist时使用
+     */
+    @TableField("allow_from")
+    private String allowFrom;
+    
+    /**
+     * 状态:
+     * active - 活跃
+     * inactive - 未激活
+     * error - 错误
+     */
+    @TableField("status")
+    private String status;
+    
+    @TableField("webhook_url")
+    private String webhookUrl;
+    
+    @TableField("openclaw_gateway_url")
+    private String openclawGatewayUrl;
+    
+    @TableField("openclaw_gateway_token")
+    private String openclawGatewayToken;
+    
+    @TableField(fill = FieldFill.INSERT)
+    private LocalDateTime createdAt;
+    
+    @TableField(fill = FieldFill.INSERT_UPDATE)
+    private LocalDateTime updatedAt;
+    
+    // 枚举类
+    public static class PairingMode {
+        public static final String MANUAL = "manual";
+        public static final String AUTO = "auto";
+        public static final String RULE = "rule";
+        
+        public static String[] getAll() {
+            return new String[]{MANUAL, AUTO, RULE};
+        }
+    }
+    
+    public static class Status {
+        public static final String ACTIVE = "active";
+        public static final String INACTIVE = "inactive";
+        public static final String ERROR = "error";
+        
+        public static String[] getAll() {
+            return new String[]{ACTIVE, INACTIVE, ERROR};
+        }
+    }
+}