app/Dashboard/Stats/BreakdownResult.php

@@ -22,9 +22,4 @@ public function shareOf(Breakdown $row): float
 
         return $total > 0 ? round(($row->count / $total) * 100, 1) : 0.0;
     }
-
-    public function isEmpty(): bool
-    {
-        return $this->total() === 0;
-    }
 }

app/Dashboard/Stats/Stat.php

@@ -5,7 +5,7 @@
 interface Stat
 {
     /**
-     * Stable identifier, also used as the island name for this stat's panel.
+     * Stable identifier. Island names in dashboard.blade.php are written to match by hand, not derived from this.
      */
     public function key(): string;
 

app/Http/Controllers/Api/V1/DashboardController.php

@@ -20,8 +20,8 @@ public function __construct(
     public function stats(Request $request): JsonResponse
     {
         $validated = $request->validate([
-            'from' => ['nullable', 'date'],
+            'from' => ['nullable', 'date', 'required_with:to'],
-            'to' => ['nullable', 'date', 'after_or_equal:from'],
+            'to' => ['nullable', 'date', 'after_or_equal:from', 'required_with:from'],
         ]);
 
         $range = isset($validated['from'], $validated['to'])

app/Livewire/Activity.php

@@ -4,12 +4,9 @@
 
 use App\Enums\ActivityTypeEnum;
 use App\Models\ActivityLog;
-use App\Models\Article;
 use App\Services\Activity\ActivitySummary;
 use Illuminate\Contracts\View\View;
 use Illuminate\Database\Eloquent\Builder;
-use Illuminate\Database\Eloquent\Relations\MorphTo;
-use Illuminate\Database\Eloquent\Relations\Relation;
 use Livewire\Component;
 use Livewire\WithPagination;
 
@@ -37,11 +34,7 @@ public function updatedDays(): void
     private function query(): Builder
     {
         return ActivityLog::query()
-            ->with(['subject' => function (Relation $morphTo): void {
+            ->withSubjectDetails()
-                if ($morphTo instanceof MorphTo) {
-                    $morphTo->morphWith([Article::class => ['feed']]);
-                }
-            }])
             ->since(now()->subDays($this->days))
             ->when(
                 $this->type !== '',

app/Livewire/Dashboard.php

@@ -11,13 +11,10 @@
 use App\Dashboard\Stats\PublishSuccessRate;
 use App\Dashboard\Stats\SeriesResult;
 use App\Models\ActivityLog;
-use App\Models\Article;
 use App\Services\DashboardStatsService;
 use App\Support\DateRange;
 use Illuminate\Contracts\View\View;
 use Illuminate\Database\Eloquent\Collection;
-use Illuminate\Database\Eloquent\Relations\MorphTo;
-use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Support\Carbon;
 use InvalidArgumentException;
 use Livewire\Attributes\Computed;
@@ -195,11 +192,7 @@ private function breakdown(string $stat): BreakdownResult
     public function recentActivity(): Collection
     {
         return ActivityLog::query()
-            ->with(['subject' => function (Relation $morphTo): void {
+            ->withSubjectDetails()
-                if ($morphTo instanceof MorphTo) {
-                    $morphTo->morphWith([Article::class => ['feed']]);
-                }
-            }])
             ->latestFirst()
             ->limit(self::RECENT_ACTIVITY_LIMIT)
             ->get();

app/Models/ActivityLog.php

@@ -8,6 +8,7 @@
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Support\Carbon;
 
 /**
@@ -77,4 +78,17 @@ public function scopeLatestFirst(Builder $query): Builder
     {
         return $query->orderByDesc('logged_at')->orderByDesc('id');
     }
+
+    /**
+     * @param  Builder<ActivityLog>  $query
+     * @return Builder<ActivityLog>
+     */
+    public function scopeWithSubjectDetails(Builder $query): Builder
+    {
+        return $query->with(['subject' => function (Relation $morphTo): void {
+            if ($morphTo instanceof MorphTo) {
+                $morphTo->morphWith([Article::class => ['feed']]);
+            }
+        }]);
+    }
 }

tests/Feature/Http/Controllers/Api/V1/DashboardControllerTest.php

@@ -99,6 +99,22 @@ public function test_stats_rejects_a_malformed_date(): void
             ->assertStatus(422);
     }
 
+    public function test_stats_rejects_a_from_without_a_to(): void
+    {
+        $this
+            ->getJson('/api/v1/dashboard/stats?from=2026-07-01')
+            ->assertStatus(422)
+            ->assertJsonValidationErrors('to');
+    }
+
+    public function test_stats_rejects_a_to_without_a_from(): void
+    {
+        $this
+            ->getJson('/api/v1/dashboard/stats?to=2026-07-31')
+            ->assertStatus(422)
+            ->assertJsonValidationErrors('from');
+    }
+
     public function test_stats_with_sample_data(): void
     {
         $feed = Feed::factory()->create(['is_active' => true]);

tests/Feature/Livewire/DashboardTest.php

@@ -13,6 +13,7 @@
 use App\Models\RouteArticle;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\DB;
 use Livewire\Features\SupportTesting\Testable;
 use Livewire\Livewire;
 use Tests\TestCase;
@@ -552,6 +553,32 @@ public function test_it_renders_an_activity_entry_whose_subject_was_deleted(): v
         Livewire::test(Dashboard::class)->assertSee('Orphaned entry');
     }
 
+    private function dashboardQueryCount(int $activityEntries): int
+    {
+        $feed = Feed::factory()->create();
+
+        foreach (range(1, $activityEntries) as $index) {
+            $article = Article::factory()->create(['feed_id' => $feed->id]);
+            ActivityLog::factory()->forSubject($article)->create(['message' => "Entry {$index}"]);
+        }
+
+        DB::flushQueryLog();
+        DB::enableQueryLog();
+        Livewire::test(Dashboard::class);
+        $queries = count(DB::getQueryLog());
+        DB::disableQueryLog();
+
+        return $queries;
+    }
+
+    public function test_it_does_not_fan_out_queries_per_activity_entry(): void
+    {
+        $this->assertSame(
+            $this->dashboardQueryCount(1),
+            $this->dashboardQueryCount(20),
+        );
+    }
+
     public function test_every_range_dependent_island_re_renders_on_a_range_change(): void
     {
         $fragments = $this->islandFragments(

tests/Unit/Dashboard/Stats/BreakdownResultTest.php

@@ -40,19 +40,4 @@ public function test_it_reports_a_zero_share_when_nothing_was_counted(): void
 
         $this->assertSame(0.0, $result->shareOf($result->rows[0]));
     }
-
-    public function test_it_has_no_data_without_rows(): void
-    {
-        $this->assertTrue((new BreakdownResult([]))->isEmpty());
-    }
-
-    public function test_it_has_no_data_when_every_row_is_zero(): void
-    {
-        $this->assertTrue((new BreakdownResult([new Breakdown('A', 0)]))->isEmpty());
-    }
-
-    public function test_it_has_data_when_any_row_is_counted(): void
-    {
-        $this->assertFalse((new BreakdownResult([new Breakdown('A', 1)]))->isEmpty());
-    }
 }

tests/Unit/Models/RouteArticleDecisionTest.php

@@ -67,6 +67,26 @@ public function test_re_approving_does_not_move_the_decision_time(): void
         );
     }
 
+    public function test_re_rejecting_does_not_move_the_decision_time(): void
+    {
+        /** @var RouteArticle $routeArticle */
+        $routeArticle = RouteArticle::factory()->create([
+            'approval_status' => ApprovalStatusEnum::PENDING,
+            'decided_at' => null,
+        ]);
+
+        $routeArticle->reject();
+        $first = $routeArticle->fresh()->decided_at;
+
+        $this->travel(1)->hours();
+        $routeArticle->fresh()->reject();
+
+        $this->assertSame(
+            $first->format('Y-m-d H:i:s'),
+            $routeArticle->fresh()->decided_at->format('Y-m-d H:i:s')
+        );
+    }
+
     public function test_rejecting_an_approved_article_moves_the_decision_time(): void
     {
         /** @var RouteArticle $routeArticle */