feat(workbench): 趋势图仅展示最新发布倒推半年数据（时间窗口过滤）

project/短视频脚本创作/V1.0/mcn-work-shop/public/data-pages.js

@@ -547,9 +547,9 @@ async function renderAccountDetail(view, id) {
     view._reload = load; // 静默自动刷新（保留当前 tab/翻页）
   }
 
-  /* 点赞/评论趋势折线图：X=视频发布时间（升序），单图双 Y 轴（左点赞/右评论），彩色序列
+  /* 点赞/评论趋势折线图：X=视频发布时间（倒序 新→旧），单图双 Y 轴（左点赞/右评论），彩色序列
-     点赞量级远超评论（60 倍+），双 Y 轴独立刻度保证两条线都清晰可见；lieflat-charts G8 Rainfall 骨架
+     只展示最新发布视频倒推半年的数据；点赞量级远超评论（60 倍+），双 Y 轴独立刻度保证两条线都清晰可见
-     mono token：纸 #F0EFEB / 墨 #1C1C1A / 灰 #8F8E88 / 网格 #DEDDD6；tipLight 黑底纸字；quarticOut 入场 */
+     lieflat-charts G8 Rainfall 骨架；mono token：纸 #F0EFEB / 墨 #1C1C1A / 灰 #8F8E88 / 网格 #DEDDD6；tipLight 黑底纸字 */
   function renderTrendChart(view) {
     const el = view.querySelector('#trendChart');
     if (!el) return;
@@ -560,7 +560,12 @@ async function renderAccountDetail(view, id) {
       .map((v) => ({ t: String(v.publish_time).replace(/-/g, '/'), like: numOf(v.like_display || v.like_count), cmt: numOf(v.comment_count) }))
       .filter((p) => p.like > 0 || p.cmt > 0)
       .sort((a, b) => new Date(b.t) - new Date(a.t)); // 时间轴从左到右 新→旧（阅读习惯先看新发布）
-    if (pts.length < 2) { el.innerHTML = `<div class="trend-empty">暂无足够视频数据展示趋势</div>`; return; }
+    // 半年时间窗口：以最新发布视频为锚点，倒推 6 个月，只展示窗口内的数据
+    const latest = new Date(pts[0].t);
+    const halfYearAgo = new Date(latest);
+    halfYearAgo.setMonth(halfYearAgo.getMonth() - 6);
+    const ptsWin = pts.filter((p) => new Date(p.t) >= halfYearAgo);
+    if (ptsWin.length < 2) { el.innerHTML = `<div class="trend-empty">近半年暂无足够视频数据展示趋势</div>`; return; }
     const PAPER = '#F0EFEB', MUTED = '#8F8E88', GRID = '#DEDDD6';
     const LIKE = '#E54D42', CMT = '#3B82F6'; // 点赞=红 / 评论=蓝（彩色双序列）
     const tipLight = { backgroundColor: '#1C1C1A', borderWidth: 0, padding: [10, 14], textStyle: { color: PAPER, fontFamily: 'Inter, system-ui, sans-serif', fontSize: 12 } };
@@ -577,13 +582,13 @@ async function renderAccountDetail(view, id) {
       tooltip: { ...tipLight, trigger: 'axis', axisPointer: { type: 'cross', lineStyle: { color: '#B0AFA9' } },
         formatter: (ps) => {
           if (!ps || !ps.length) return '';
-          const d = pts[ps[0].dataIndex];
+          const d = ptsWin[ps[0].dataIndex];
           const lines = ps.map((p) => `${p.marker}${p.seriesName} ${fmtWan(p.value)}`).join('<br/>');
           return `${d.t.split(' ')[0]}<br/>${lines}`;
         } },
       grid: { left: 56, right: 56, top: 16, bottom: 28 },
-      xAxis: { type: 'category', data: pts.map((p) => p.t), axisLine: { show: false }, axisTick: { show: false },
+      xAxis: { type: 'category', data: ptsWin.map((p) => p.t), axisLine: { show: false }, axisTick: { show: false },
-        axisLabel: { color: MUTED, fontFamily: 'Inter, system-ui, sans-serif', fontSize: 9.5, interval: Math.max(0, Math.ceil(pts.length / 8) - 1), formatter: (v) => v.slice(5, 10) } },
+        axisLabel: { color: MUTED, fontFamily: 'Inter, system-ui, sans-serif', fontSize: 9.5, interval: Math.max(0, Math.ceil(ptsWin.length / 8) - 1), formatter: (v) => v.slice(5, 10) } },
       yAxis: [
         { type: 'value', name: '点赞', nameTextStyle: { color: LIKE, fontFamily: 'Inter, system-ui, sans-serif', fontSize: 10, padding: [0, 0, 0, -40] },
           splitLine: { lineStyle: { color: GRID } }, axisLabel: { color: LIKE, fontFamily: 'Inter, system-ui, sans-serif', fontSize: 9.5, formatter: wanTick }, axisLine: { show: false }, axisTick: { show: false } },
@@ -591,9 +596,9 @@ async function renderAccountDetail(view, id) {
           splitLine: { show: false }, axisLabel: { color: CMT, fontFamily: 'Inter, system-ui, sans-serif', fontSize: 9.5, formatter: wanTick }, axisLine: { show: false }, axisTick: { show: false } },
       ],
       series: [
-        { name: '点赞', type: 'line', yAxisIndex: 0, data: pts.map((p) => p.like), smooth: 0.4, symbol: 'none', lineStyle: { color: LIKE, width: 2.2 }, z: 3,
+        { name: '点赞', type: 'line', yAxisIndex: 0, data: ptsWin.map((p) => p.like), smooth: 0.4, symbol: 'none', lineStyle: { color: LIKE, width: 2.2 }, z: 3,
           areaStyle: { color: { type: 'linear', x: 0, y: 0, x2: 0, y2: 1, colorStops: [{ offset: 0, color: 'rgba(229,77,66,.20)' }, { offset: 1, color: 'rgba(229,77,66,0)' }] } } },
-        { name: '评论', type: 'line', yAxisIndex: 1, data: pts.map((p) => p.cmt), smooth: 0.4, symbol: 'none', lineStyle: { color: CMT, width: 2 }, z: 2,
+        { name: '评论', type: 'line', yAxisIndex: 1, data: ptsWin.map((p) => p.cmt), smooth: 0.4, symbol: 'none', lineStyle: { color: CMT, width: 2 }, z: 2,
           areaStyle: { color: { type: 'linear', x: 0, y: 0, x2: 0, y2: 1, colorStops: [{ offset: 0, color: 'rgba(59,130,246,.14)' }, { offset: 1, color: 'rgba(59,130,246,0)' }] } } },
       ],
     });