refactor: 合并原库房客户端到主WMS服务，退役8891端口

1.  将bj_power_wms_client的前端代码、配置及网关逻辑全部迁移到bj_power_wms主项目
2.  删除原库房客户端相关的所有文件与配置
3.  更新README与部署文档，说明合并后的服务架构
4.  新增Web配置项支持自动打开浏览器开关，统一服务端口为8890

bj_power_wms/frontend/src/pages/Ledger.vue

@@ -0,0 +1,134 @@
+<script setup>
+defineOptions({ name: 'Ledger' })
+import { onMounted, reactive, ref } from 'vue'
+import request from '../utils/request'
+import { fmtTime } from '../utils/format'
+import PageHelp from '../components/PageHelp.vue'
+import { helpLedger } from '../help'
+
+const orderNo = ref('')
+const materialCode = ref('')
+const materialName = ref('')
+const status = ref('')
+const loading = ref(false)
+const queried = ref(false)
+const rows = ref([])
+const total = ref(0)
+const page = reactive({ current: 1, size: 20 })
+
+function gapOf(row) {
+  return Math.max((row.totalQty || 0) - (row.outQty || 0), 0)
+}
+
+async function load() {
+  loading.value = true
+  try {
+    const data = await request.get('/ledger/query', {
+      params: {
+        orderNo: orderNo.value.trim() || undefined,
+        materialCode: materialCode.value.trim() || undefined,
+        materialName: materialName.value.trim() || undefined,
+        status: status.value || undefined,
+        page: page.current,
+        pageSize: page.size
+      }
+    })
+    rows.value = data?.list || []
+    total.value = data?.total || 0
+    queried.value = true
+  } finally {
+    loading.value = false
+  }
+}
+
+function search() {
+  page.current = 1
+  load()
+}
+
+onMounted(load)
+
+// 展示状态由「已出库 vs 需求总量」实时派生，不再直接展示表内"进行中"：
+// 领料完结(缺口=0) / 部分领料(有出库、缺口>0) / 待领料(未出过库)
+function statusView(row) {
+  if (row.status === '领料完结') return { text: '领料完结', type: 'success' }
+  if ((row.outQty || 0) > 0) return { text: '部分领料', type: 'primary' }
+  return { text: '待领料', type: 'info' }
+}
+</script>
+
+<template>
+  <div>
+    <el-card shadow="never" class="mb12">
+      <el-form inline @submit.prevent="search">
+        <el-form-item label="工单号">
+          <el-input v-model="orderNo" placeholder="工单号（可空，查全部）" clearable
+                    style="width:200px" @keyup.enter="search" />
+        </el-form-item>
+        <el-form-item label="物料编码">
+          <el-input v-model="materialCode" placeholder="物料编码（可空）" clearable
+                    style="width:160px" @keyup.enter="search" />
+        </el-form-item>
+        <el-form-item label="物料名称">
+          <el-input v-model="materialName" placeholder="物料名称（可空）" clearable
+                    style="width:160px" @keyup.enter="search" />
+        </el-form-item>
+        <el-form-item label="状态">
+          <el-select v-model="status" placeholder="全部" clearable style="width:130px" @change="search">
+            <el-option label="待领料" value="待领料" />
+            <el-option label="部分领料" value="部分领料" />
+            <el-option label="领料完结" value="领料完结" />
+          </el-select>
+        </el-form-item>
+        <el-form-item>
+          <el-button type="primary" :loading="loading" @click="search">查询</el-button>
+        </el-form-item>
+      </el-form>
+    </el-card>
+
+    <el-card v-if="queried" shadow="never">
+      <template #header>
+        工单备料台账（共 {{ total }} 条）
+      </template>
+      <el-table :data="rows" border v-loading="loading" empty-text="暂无台账数据">
+        <el-table-column prop="id" label="ID" width="64" align="center" />
+        <el-table-column prop="orderNo" label="工单号" min-width="150" />
+        <el-table-column prop="materialCode" label="物料编码" min-width="140" />
+        <el-table-column prop="materialName" label="物料名称" min-width="160">
+          <template #default="{ row }">{{ row.materialName || '-' }}</template>
+        </el-table-column>
+        <el-table-column prop="totalQty" label="需求总量" width="100" align="center" />
+        <el-table-column prop="outQty" label="已出库" width="90" align="center" />
+        <el-table-column label="缺口" width="90" align="center">
+          <template #default="{ row }">{{ gapOf(row) }}</template>
+        </el-table-column>
+        <el-table-column label="状态" width="110" align="center">
+          <template #default="{ row }">
+            <el-tag :type="statusView(row).type" size="small">{{ statusView(row).text }}</el-tag>
+          </template>
+        </el-table-column>
+        <el-table-column prop="remark" label="备注" min-width="140">
+          <template #default="{ row }">{{ row.remark || '-' }}</template>
+        </el-table-column>
+        <el-table-column label="创建时间" width="165" align="center">
+          <template #default="{ row }">{{ fmtTime(row.createdAt) }}</template>
+        </el-table-column>
+      </el-table>
+      <div class="pager">
+        <el-pagination background layout="total, prev, pager, next" :total="total"
+                       :current-page="page.current" :page-size="page.size"
+                       @current-change="(p) => { page.current = p; load() }" />
+      </div>
+    </el-card>
+
+    <el-card v-else shadow="never">
+      <el-skeleton :rows="6" animated />
+    </el-card>
+  </div>
+  <PageHelp :data="helpLedger" page="Ledger" />
+</template>
+
+<style scoped>
+.mb12 { margin-bottom: 12px; }
+.pager { display: flex; justify-content: flex-end; margin-top: 10px; }
+</style>