Add spend labels on bars and $ currency symbols

- 各投手本周期内投放花费: draw value labels at each bar end via a small
  inline Chart.js plugin (no extra CDN dependency); right padding added
  so labels stay inside the panel.
- Prefix all spend figures with $: summary card, both chart axes and
  tooltips, buyer subtotals, and package detail tables.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

index.html

@@ -40,20 +40,41 @@ summary{cursor:pointer;color:var(--accent);font-size:12px}
 </div>
 <script>
 const fmt=n=>n.toLocaleString('en-US',{minimumFractionDigits:2,maximumFractionDigits:2});
+const usd=n=>'$'+fmt(n);
+const axisUsd=v=>'$'+Number(v).toLocaleString('en-US');
+// 柱状条末端花费标签（内联插件，避免额外引入 chartjs-plugin-datalabels）
+const barLabels={id:'barLabels',afterDatasetsDraw(chart){
+  const ctx=chart.ctx;
+  chart.data.datasets.forEach((ds,di)=>{
+    const meta=chart.getDatasetMeta(di);
+    if(meta.hidden)return;
+    meta.data.forEach((el,i)=>{
+      const v=ds.data[i];
+      if(v==null)return;
+      ctx.save();
+      ctx.font='600 11px "JetBrains Mono","Menlo",monospace';
+      ctx.fillStyle='#2D1B20';
+      ctx.textBaseline='middle';
+      ctx.textAlign='left';
+      ctx.fillText(usd(v),el.x+6,el.y);
+      ctx.restore();
+    });
+  });
+}};
 // 直接使用 data.json，Excel 支持由后续更新处理
 fetch('data.json?t='+Date.now()).then(r=>r.json()).then(d=>render(d)).catch(e=>{document.getElementById('metaLine').textContent='数据加载失败：'+e.message;});
 function render(d){
   document.getElementById('weekBadge').textContent=d.meta.week||'';
   document.getElementById('metaLine').textContent='数据周期：'+d.meta.date_range+'　·　数据来源：'+d.meta.source+'　·　生成时间：'+new Date(d.meta.generated_at).toLocaleString('zh-CN');
   const buyers=d.buyers.slice().sort((a,b)=>b.total-a.total);
-  const cards=[['投手数',buyers.length],['投放花费合计',fmt(d.grand_total)],['覆盖 Adpingid 数',d.week34_id_count],['花费最高投手',buyers[0].name]];
+  const cards=[['投手数',buyers.length],['投放花费合计',usd(d.grand_total)],['覆盖 Adpingid 数',d.week34_id_count],['花费最高投手',buyers[0].name]];
   document.getElementById('cards').innerHTML=cards.map(c=>'<div class="card"><div class="k">'+c[0]+'</div><div class="v">'+c[1]+'</div></div>').join('');
   const palette=['#5b8cff','#ff9f5b','#4dd6a8','#c78bff','#ff6b81','#f5c451'];
-  new Chart(document.getElementById('spendChart'),{type:'bar',data:{labels:buyers.map(b=>b.name),datasets:[{label:'投放花费',data:buyers.map(b=>b.total),backgroundColor:buyers.map((b,i)=>palette[i%palette.length])}]},options:{indexAxis:'y',plugins:{legend:{display:false}},scales:{x:{ticks:{color:'#5b6472'},grid:{color:'#d6e2f5'}},y:{ticks:{color:'#111111'},grid:{display:false}}}}});
-  new Chart(document.getElementById('pkgChart'),{type:'bar',data:{labels:buyers.map(b=>b.name),datasets:[{label:'主要Package花费',data:buyers.map(b=>b.pkgs[0].spend),backgroundColor:'#4dd6a8'}]},options:{plugins:{legend:{display:false},tooltip:{callbacks:{afterLabel:(ctx)=>buyers[ctx.dataIndex].pkgs[0].pkg}}},scales:{x:{ticks:{color:'#111111'},grid:{display:false}},y:{ticks:{color:'#5b6472'},grid:{color:'#d6e2f5'}}}}});
+  new Chart(document.getElementById('spendChart'),{type:'bar',data:{labels:buyers.map(b=>b.name),datasets:[{label:'投放花费',data:buyers.map(b=>b.total),backgroundColor:buyers.map((b,i)=>palette[i%palette.length])}]},plugins:[barLabels],options:{indexAxis:'y',layout:{padding:{right:76}},plugins:{legend:{display:false},tooltip:{callbacks:{label:(c)=>usd(c.parsed.x)}}},scales:{x:{ticks:{color:'#5b6472',callback:axisUsd},grid:{color:'#d6e2f5'}},y:{ticks:{color:'#111111'},grid:{display:false}}}}});
+  new Chart(document.getElementById('pkgChart'),{type:'bar',data:{labels:buyers.map(b=>b.name),datasets:[{label:'主要Package花费',data:buyers.map(b=>b.pkgs[0].spend),backgroundColor:'#4dd6a8'}]},options:{plugins:{legend:{display:false},tooltip:{callbacks:{label:(c)=>usd(c.parsed.y),afterLabel:(ctx)=>buyers[ctx.dataIndex].pkgs[0].pkg}}},scales:{x:{ticks:{color:'#111111'},grid:{display:false}},y:{ticks:{color:'#5b6472',callback:axisUsd},grid:{color:'#d6e2f5'}}}}});
   document.getElementById('tables').innerHTML=buyers.map(b=>{
-    const rows=b.pkgs.map(p=>'<tr><td class="pkg">'+p.pkg+'</td><td class="num">'+fmt(p.spend)+'</td></tr>').join('');
-    return '<div style="margin-bottom:18px"><div class="buyer-name">'+b.name+'　<span style="color:var(--sub);font-weight:400">合计 '+fmt(b.total)+'　·　主要订单 '+b.pkgs[0].pkg+'</span></div><details><summary>展开 '+b.pkgs.length+' 个 Package 明细</summary><table><thead><tr><th>Package</th><th class="num">花费</th></tr></thead><tbody>'+rows+'</tbody></table></details></div>';
+    const rows=b.pkgs.map(p=>'<tr><td class="pkg">'+p.pkg+'</td><td class="num">'+usd(p.spend)+'</td></tr>').join('');
+    return '<div style="margin-bottom:18px"><div class="buyer-name">'+b.name+'　<span style="color:var(--sub);font-weight:400">合计 '+usd(b.total)+'　·　主要订单 '+b.pkgs[0].pkg+'</span></div><details><summary>展开 '+b.pkgs.length+' 个 Package 明细</summary><table><thead><tr><th>Package</th><th class="num">花费</th></tr></thead><tbody>'+rows+'</tbody></table></details></div>';
   }).join('');
   document.getElementById('foot').textContent=d.meta.note;
 }