添加Swagger/OpenAPI依赖并更新用户账户管理相关的API文档注释，优化用户和管理员账户控制器的接口描述，移除不必要的字段和参数，调整数据库映射以简化用户账户管理逻辑。

target/classes/mapper/agent/LinkTaskMapper.xml

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.gameplatform.server.mapper.agent.LinkTaskMapper">
+    <resultMap id="LinkTaskMap" type="com.gameplatform.server.model.entity.agent.LinkTask">
+        <id property="id" column="id" />
+        <result property="batchId" column="batch_id" />
+        <result property="agentId" column="agent_id" />
+        <result property="codeNo" column="code_no" />
+        <result property="tokenHash" column="token_hash" />
+        <result property="expireAt" column="expire_at" />
+        <result property="status" column="status" />
+        <result property="region" column="region" />
+        <result property="machineId" column="machine_id" />
+        <result property="loginAt" column="login_at" />
+        <result property="refundAt" column="refund_at" />
+        <result property="revokedAt" column="revoked_at" />
+        <result property="createdAt" column="created_at" />
+        <result property="updatedAt" column="updated_at" />
+    </resultMap>
+
+    <select id="findById" parameterType="long" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE id = #{id}
+        LIMIT 1
+    </select>
+
+    <select id="findByCodeNo" parameterType="string" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE code_no = #{codeNo}
+        LIMIT 1
+    </select>
+
+    <select id="findByTokenHash" parameterType="string" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE token_hash = #{tokenHash}
+        LIMIT 1
+    </select>
+
+    <insert id="insert" parameterType="com.gameplatform.server.model.entity.agent.LinkTask" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO link_task (batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at)
+        VALUES (#{batchId}, #{agentId}, #{codeNo}, #{tokenHash}, #{expireAt}, #{status}, #{region}, #{machineId}, #{loginAt}, #{refundAt}, #{revokedAt})
+    </insert>
+
+    <update id="update" parameterType="com.gameplatform.server.model.entity.agent.LinkTask">
+        UPDATE link_task
+        <set>
+            <if test="status != null">status = #{status},</if>
+            <if test="region != null">region = #{region},</if>
+            <if test="machineId != null">machine_id = #{machineId},</if>
+            <if test="loginAt != null">login_at = #{loginAt},</if>
+            <if test="refundAt != null">refund_at = #{refundAt},</if>
+            <if test="revokedAt != null">revoked_at = #{revokedAt},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+
+    <update id="updateStatus">
+        UPDATE link_task SET status = #{status} WHERE id = #{id}
+    </update>
+
+    <update id="updateStatusAndMachine">
+        UPDATE link_task 
+        SET status = #{status}, region = #{region}, machine_id = #{machineId}, login_at = #{loginAt}
+        WHERE id = #{id}
+    </update>
+
+    <select id="findByAgentId" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE agent_id = #{agentId}
+        ORDER BY created_at DESC
+        LIMIT #{size} OFFSET #{offset}
+    </select>
+
+    <select id="countByAgentId" resultType="long">
+        SELECT COUNT(1) FROM link_task WHERE agent_id = #{agentId}
+    </select>
+
+    <select id="findByAgentIdAndStatus" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE agent_id = #{agentId} AND status = #{status}
+        ORDER BY created_at DESC
+        LIMIT #{size} OFFSET #{offset}
+    </select>
+
+    <select id="countByAgentIdAndStatus" resultType="long">
+        SELECT COUNT(1) FROM link_task WHERE agent_id = #{agentId} AND status = #{status}
+    </select>
+
+    <select id="findByBatchId" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE batch_id = #{batchId}
+        ORDER BY created_at DESC
+        LIMIT #{size} OFFSET #{offset}
+    </select>
+
+    <select id="countByBatchId" resultType="long">
+        SELECT COUNT(1) FROM link_task WHERE batch_id = #{batchId}
+    </select>
+
+    <select id="findExpiredTasks" resultMap="LinkTaskMap">
+        SELECT id, batch_id, agent_id, code_no, token_hash, expire_at, status, region, machine_id, login_at, refund_at, revoked_at, created_at, updated_at
+        FROM link_task
+        WHERE expire_at &lt;= #{expireTime} AND status IN ('NEW', 'USING')
+        ORDER BY expire_at ASC
+        LIMIT #{size}
+    </select>
+</mapper>