feat(审批流程): 优化审批逻辑并添加抄送功能

重构审批条件判断逻辑，统一使用canApprove和canWithdraw计算属性控制按钮显示
为所有审批详情页添加撤回按钮功能
在审批列表页新增抄送功能，支持多选抄送人
调整提交成功后的跳转路由为/hrm/apply
仅在approverMode为template时设置tplId参数

klp-ui/src/views/hrm/requests/sealDetail.vue

@@ -244,9 +244,9 @@
         <div v-if="currentTask" class="btn-row">
           <el-input v-model="actionRemark" type="textarea" :rows="3" placeholder="填写审批意见（可选）" />
           <div class="btn-row mt10">
-            <el-button type="success" :loading="actionSubmitting" @click="submitTaskAction('approve')">通过</el-button>
-            <el-button type="danger" :loading="actionSubmitting" @click="submitTaskAction('reject')">驳回</el-button>
-            <el-button :loading="actionSubmitting" @click="submitTaskAction('withdraw')">撤回</el-button>
+            <el-button type="success" v-if="canApprove" :loading="actionSubmitting" @click="submitTaskAction('approve')">通过</el-button>
+            <el-button type="danger" v-if="canApprove" :loading="actionSubmitting" @click="submitTaskAction('reject')">驳回</el-button>
+            <el-button v-if="canWithdraw" :loading="actionSubmitting" @click="submitTaskAction('withdraw')">撤回</el-button>
           </div>
         </div>
         <div v-else class="empty">当前无待办任务（可能已处理完成，或你不是当前审批人）</div>
@@ -361,10 +361,18 @@ export default {
       }
       return empId ? `员工ID:${empId}` : '-'
     },
+    canApprove() {
+      // 只有待审批状态且是当前用户待审批的才能审批
+      return this.seal.status === 'pending' && (this.currentTask?.assigneeUserName === this.$store.getters.name || this.currentTask?.assigneeUserId === this.$store.getters.id)
+    },
     canStamp() {
       // 审批通过后，且尚未生成回执时，可以盖章
       return this.seal.status === 'approved' && !this.seal.receiptFileIds && this.targetPdfFile && this.attachmentList.length > 0
-    }
+    },
+    canWithdraw() {
+      console.log(this.seal.createBy, this.$store.getters.name)
+      return this.seal.status === 'running' && this.seal.createBy === this.$store.getters.name
+    },
   },
   created() {
     this.loadEmployees()