feat: 更新分期方案初始化脚本，匹配最新表结构

- 更新表名和字段名为小写格式
- 修正字段类型以匹配实体类定义
- 新增缺失字段：scheme_type, down_payment_ratio等
- 添加索引优化查询性能
- 完善表和字段注释

LCXiaoguan-ui/bin/build.bat

@@ -0,0 +1,12 @@
+@echo off
+echo.
+echo [<5B><>Ϣ] <20><><EFBFBD><EFBFBD>Web<65><62><EFBFBD>̣<EFBFBD><CCA3><EFBFBD><EFBFBD><EFBFBD>dist<73>ļ<EFBFBD><C4BC><EFBFBD>
+echo.
+
+%~d0
+cd %~dp0
+
+cd ..
+yarn build:prod
+
+pause

LCXiaoguan-ui/bin/package.bat

@@ -0,0 +1,12 @@
+@echo off
+echo.
+echo [<5B><>Ϣ] <20><>װWeb<65><62><EFBFBD>̣<EFBFBD><CCA3><EFBFBD><EFBFBD><EFBFBD>node_modules<65>ļ<EFBFBD><C4BC><EFBFBD>
+echo.
+
+%~d0
+cd %~dp0
+
+cd ..
+yarn --registry=https://registry.npmmirror.com
+
+pause

LCXiaoguan-ui/bin/run-web.bat

@@ -0,0 +1,12 @@
+@echo off
+echo.
+echo [<5B><>Ϣ] ʹ<><CAB9> Vite <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Web <20><><EFBFBD>̡<EFBFBD>
+echo.
+
+%~d0
+cd %~dp0
+
+cd ..
+yarn dev
+
+pause