feat: 完成产线MES系统全流程功能迭代与优化

本提交完成了多个核心模块的功能完善与业务对齐：
1. 工位终端：固定工位配置、移除自选工位逻辑、适配配置化工位号
2. MES核心：重构工位组合逻辑、新增工单/流程状态管理、补全报工/追溯逻辑
3. WMS客户端：新增修改密码功能、优化帮助弹窗逻辑
4. 文档与权限：补充完整操作手册、统一菜单名称与权限描述
5. 修复多业务校验：排产数量校验、工单状态校验、工位绑定规则

bj_power_wms_client/frontend/src/pages/ChangePassword.vue

@@ -0,0 +1,63 @@
+<template>
+  <el-card style="max-width:480px;margin-top:20px">
+    <template #header><b>修改我的密码</b></template>
+    <el-alert type="warning" :closable="false" style="margin-bottom:16px"
+      title="密码修改成功后需重新登录" />
+    <el-form :model="form" label-width="100px" @submit.prevent>
+      <el-form-item label="旧密码">
+        <el-input v-model="form.oldPassword" type="password" show-password
+          placeholder="请输入当前密码" />
+      </el-form-item>
+      <el-form-item label="新密码">
+        <el-input v-model="form.newPassword" type="password" show-password
+          placeholder="至少 6 位" />
+      </el-form-item>
+      <el-form-item label="确认新密码">
+        <el-input v-model="form.confirmPassword" type="password" show-password
+          placeholder="请再次输入新密码" />
+      </el-form-item>
+      <el-form-item>
+        <el-button type="primary" :loading="loading" @click="submit">保存</el-button>
+        <el-button @click="reset">重置</el-button>
+      </el-form-item>
+    </el-form>
+  </el-card>
+</template>
+
+<script setup>
+import { reactive, ref } from 'vue'
+import { ElMessage } from 'element-plus'
+import { useRouter } from 'vue-router'
+import { logout } from '../utils/auth'
+import request from '../utils/request'
+
+const router = useRouter()
+const loading = ref(false)
+const form = reactive({ oldPassword: '', newPassword: '', confirmPassword: '' })
+
+async function submit() {
+  if (!form.oldPassword || !form.newPassword) return ElMessage.warning('请填写旧密码和新密码')
+  if (form.newPassword !== form.confirmPassword) return ElMessage.warning('两次输入的新密码不一致')
+  if (form.newPassword.length < 6) return ElMessage.warning('新密码长度至少 6 位')
+  loading.value = true
+  try {
+    await request.post('/user/change-password', {
+      oldPassword: form.oldPassword,
+      newPassword: form.newPassword
+    })
+    ElMessage.success('密码修改成功，请重新登录')
+    logout()
+    router.replace('/login')
+  } catch (e) {
+    /* 错误已由请求拦截器提示 */
+  } finally {
+    loading.value = false
+  }
+}
+
+function reset() {
+  form.oldPassword = ''
+  form.newPassword = ''
+  form.confirmPassword = ''
+}
+</script>