feat: 库存管理系统 MaterialWMS 初始版本

- Flask + SQLAlchemy 物料/入库/出库/BOM/生产订单全模块管理
- PyInstaller 打包为单文件 EXE (双击运行, 自动建库)
- 物料维度: 入库总数量 / 消耗总数量 / 逐次入库流水(含时间)
- BOM 详情展示组成物料的规格型号与单套用量
- 支持 Altium / 嘉立创 BOM 批量导入(文本与 Excel 双通道)
- 内置端到端验证脚本(tools/_exe_util.py 等, 清理进程树防残留)

templates/bom_form.html

@@ -0,0 +1,44 @@
+{% extends "base.html" %}
+{% block title %}{{ '编辑 BOM' if b else '新增 BOM' }}{% endblock %}
+{% block content %}
+<form method="post" class="card form-card" style="max-width:640px">
+  <h3>{{ '编辑 BOM' if b else '新增 BOM' }}</h3>
+  <label>BOM 型号 *</label>
+  <input name="code" value="{{ b.code if b else '' }}" required {% if b %}readonly{% endif %}>
+  <label>名称</label>
+  <input name="name" value="{{ b.name if b else '' }}">
+  <label>备注</label>
+  <input name="note" value="{{ b.note if b else '' }}">
+
+  <h3>组成物料 (单套用量)</h3>
+  <div id="items">
+    {% for it in items %}
+    <div class="item-row" style="display:flex;gap:8px;margin-bottom:6px">
+      <input name="pn" placeholder="物料编号" value="{{ it.pn }}" style="flex:2">
+      <input name="qty" type="number" step="0.01" min="0" placeholder="单套用量" value="{{ it.qty }}" style="flex:1">
+      <button type="button" class="del" onclick="this.parentNode.remove()">✕</button>
+    </div>
+    {% else %}
+    <div class="item-row" style="display:flex;gap:8px;margin-bottom:6px">
+      <input name="pn" placeholder="物料编号" style="flex:2">
+      <input name="qty" type="number" step="0.01" min="0" placeholder="单套用量" style="flex:1">
+      <button type="button" class="del" onclick="this.parentNode.remove()">✕</button>
+    </div>
+    {% endfor %}
+  </div>
+  <button type="button" class="btn" onclick="addRow()">+ 添加一行</button>
+  <div class="row-actions"><button class="primary">保存</button></div>
+</form>
+
+<script>
+function addRow(){
+  const d=document.createElement('div');
+  d.className='item-row';
+  d.style='display:flex;gap:8px;margin-bottom:6px';
+  d.innerHTML='<input name="pn" placeholder="物料编号" style="flex:2">'+
+    '<input name="qty" type="number" step="0.01" min="0" placeholder="单套用量" style="flex:1">'+
+    '<button type="button" class="del" onclick="this.parentNode.remove()">✕</button>';
+  document.getElementById('items').appendChild(d);
+}
+</script>
+{% endblock %}