refactor(dashboard): inject 7d range from controller to avoid drift

app/Http/Controllers/Admin/DashboardController.php

@@ -164,6 +164,10 @@ class DashboardController extends Controller
         $trendStart = now()->startOfDay()->subDays($trendDays - 1);
         $trendEnd = now()->endOfDay();
 
+        // 统一提供给视图做“趋势/排行/占比”跳转的日期范围口径，避免 Blade 内重复 now() 计算导致漂移。
+        $dashboardRangeFrom7d = (string) $trendStart->format('Y-m-d');
+        $dashboardRangeTo7d = (string) $trendEnd->format('Y-m-d');
+
         $trendRawRows = PlatformOrder::query()
             ->selectRaw("DATE(created_at) as d")
             ->selectRaw('COUNT(*) as cnt')
@@ -265,6 +269,8 @@ class DashboardController extends Controller
             'stats' => $stats,
             'platformOrderTrend7d' => $platformOrderTrend7d,
             'recentPlatformOrders' => $recentPlatformOrders,
+            'dashboardRangeFrom7d' => $dashboardRangeFrom7d,
+            'dashboardRangeTo7d' => $dashboardRangeTo7d,
             'planOrderShare' => $planOrderShare,
             'planOrderShareTotal' => (int) $planOrderShareTotal,
             'planIdToName' => $planIdToName,