fix: 待回款列移至回款后面，正数显示+前缀

- finance.js/plan.js SIGNED_COLS: 待回款列移到回款与回款率之间
- 行渲染同步调序, 补回意外删除的cost/paid/cf列定义
- 正数待回款显示为+金额
- 版本号 v1.2.0.30

templates/index.html

@@ -84,7 +84,7 @@
     <header class="topbar border-b border-slate-200 bg-white px-8 py-5">
       <div class="flex items-center gap-3 w-full">
         <div class="flex-1">
-          <p class="eyebrow text-xs font-semibold uppercase tracking-[0.18em] text-blue-700">OPC Manager <span class="ml-2 text-xs font-normal text-slate-400 tracking-normal">v1.2.0.29</span></p>
+          <p class="eyebrow text-xs font-semibold uppercase tracking-[0.18em] text-blue-700">OPC Manager <span class="ml-2 text-xs font-normal text-slate-400 tracking-normal">v1.2.0.30</span></p>
           <div class="flex items-center gap-4 mt-1">
             <h1 class="text-2xl font-semibold" id="workspaceTitle">科普 OPC 工作台</h1>
             <div class="hidden sm:flex items-center gap-1.5 bg-gradient-to-r from-blue-50 to-indigo-50 border border-blue-100 rounded-full px-4 py-1.5">