fix(report): dynamic height + force all labels on cost boxplot

With many processes (44+), the fixed 500px height caused ECharts to
hide Y-axis labels. RSEQC_TIN's $3-9 box appeared to belong to RUSTQC.

- Scale chart height to 25px per process (min 500px)
- Set interval: 0 to force all Y-axis labels visible

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: edmundmiller

bin/benchmark_report_template.html

@@ -697,7 +697,6 @@ <h2 id="task-metrics"><svg class="h-icon sm"><use href="#ic-scatter"/></svg> Tas
 
   const costBoxEl = document.createElement('div');
   costBoxEl.className = 'chart';
-  costBoxEl.style.height = '500px';
   container.appendChild(costBoxEl);
 
   setTimeout(() => {
@@ -718,12 +717,13 @@ <h2 id="task-metrics"><svg class="h-icon sm"><use href="#ic-scatter"/></svg> Tas
       }
     });
 
+    costBoxEl.style.height = Math.max(500, processes.length * 25 + 60) + 'px';
     echarts.init(costBoxEl, 'seqera').setOption({
       title: { text: 'Task cost ($) per process' },
       tooltip: { trigger: 'item' },
       grid: { top: 40, bottom: 20, containLabel: true },
       yAxis: { type: 'category', data: processes,
-               axisLabel: { width: 220, overflow: 'truncate' },
+               axisLabel: { width: 220, overflow: 'truncate', interval: 0 },
                inverse: true },
       xAxis: { type: 'value', name: 'Cost ($)', nameLocation: 'center', nameGap: 25 },
       series: [{ type: 'boxplot', data: boxData }],