fix(web): show exact trend values and integer axis ticks

reaction_board/web/static/views/video.js

@@ -6,7 +6,8 @@ import {
 import { lineChart, themeColor } from "../charts.js";
 import {
   escapeAttr, escapeHtml, formatCount, formatDate, formatDelta,
-  formatDuration, formatPercent, formatScore, metricLabel, statusLabel,
+  formatDuration, formatNumber, formatPercent, formatScore,
+  metricLabel, statusLabel,
 } from "../format.js";
 import { replaceQuery } from "../router.js";
 
@@ -22,7 +23,7 @@ function snapshotTable(points) {
         ${points.slice().reverse().map((point) => `
           <tr class="${point.ok ? "" : "failed-row"}">
             <td>${escapeHtml(point.stat_date)}</td>
-            ${METRICS.map((metric) => `<td>${point.ok ? formatCount(point[metric]) : "—"}</td>`).join("")}
+            ${METRICS.map((metric) => `<td>${point.ok ? formatNumber(point[metric]) : "—"}</td>`).join("")}
             <td>${point.ok ? "成功" : `<span class="danger">失败</span>`}</td>
           </tr>`).join("")}
       </tbody>
@@ -86,7 +87,7 @@ export async function renderVideo(root, { params, query }) {
           class="chip${range === value ? " active" : ""}" data-range="${value}">${label}</button>`).join("")}
       </div>
       ${trend.available ? `<div class="chart" id="video-trend"></div>` : emptyState("暂无趋势数据", "该视频还没有成功快照。")}
-      ${!trend.available ? "" : `<p class="section-note">缺失日期会断开，不插值；失败快照按缺失处理。</p>`}
+      ${!trend.available ? "" : `<p class="section-note">缺失日期会断开，不插值；失败快照按缺失处理。纵轴按数据范围缩放，精确值见下方快照记录。</p>`}
     </section>
 
     <section class="panel">