feat(admin-dashboard): normalize plan share bar widths by top max

tests/Feature/AdminDashboardPlanOrderShareMiniChartShouldNormalizeBarWidthByTopMaxTest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Tests\Feature;
+
+use Tests\TestCase;
+
+class AdminDashboardPlanOrderShareMiniChartShouldNormalizeBarWidthByTopMaxTest extends TestCase
+{
+    public function test_dashboard_plan_order_share_mini_chart_should_normalize_bar_width_by_top_max(): void
+    {
+        $js = (string) file_get_contents(public_path('js/admin.js'));
+
+        // 护栏：占比条形图 bar 宽度应按 Top5 最大单量归一（而不是按 total 分母），避免“覆盖率低时所有 bar 很短难看”。
+        $this->assertStringContainsString('var maxCnt = 0', $js);
+        $this->assertStringContainsString('maxCnt = v', $js);
+        $this->assertStringContainsString('var barRatio =', $js);
+        $this->assertStringContainsString("bar.style.width = Math.round(barRatio * 100) + '%'", $js);
+
+        // 百分比展示仍必须按 total 分母（ratio），不能被 barRatio 替代。
+        $this->assertStringContainsString("val.textContent = formatPct(ratio, 1) + '%'", $js);
+    }
+}