fix(hrm): 补全离职申请交接日期字段

修复发起离职审批时报"请填写办理离职的交接日期"的问题：
- 表单缺少 ticket_data 状态对象，导致工单流转时 handle_date 始终为空
- 审批阶段新增交接日期日期选择器，绑定到 ticket_data.handle_date
- 查看详情时从后端响应回填 handle_date 实现回显

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/views/hrm/resignation_form.vue

@@ -34,6 +34,15 @@
                         :readonly="localMode === 'show'"
                     ></el-input>
                 </el-form-item>
+                <el-form-item label="交接日期" v-if="localMode === 'show'" required>
+                    <el-date-picker
+                        v-model="ticket_data.handle_date"
+                        type="date"
+                        placeholder="请选择办理离职的交接日期"
+                        style="width: 100%;"
+                        value-format="YYYY-MM-DD"
+                    ></el-date-picker>
+                </el-form-item>
             </el-form>
             <el-footer>
                 <el-button type="danger"
@@ -90,6 +99,7 @@ export default {
             formData: {
                 employee_name: ""
             },
+            ticket_data: {},
             localMode: this.mode,
             saveLoading: false
         }
@@ -106,6 +116,9 @@ export default {
             try {
                 let res = await this.$API.hrm.resignation.item.req(this.t_id);
                 this.formData = res;
+                if (res.handle_date) {
+                    this.ticket_data.handle_date = res.handle_date;
+                }
                 if (res.ticket_ && res.ticket_.state_.type == 1 && res.create_by == this.$TOOL.data.get("USER_INFO").id) {
                     this.localMode = "edit";
                 }