refactor: add Enum labels, fix indentation, and add URL links to StatsOverviewWidget

Adds `label()` methods to TrendDirection and PredictionSource enums for cleaner display. Fixes mixed tab/space indentation in StatsOverviewWidget. Links all stats cards to their respective Filament resources (searches, stations, oil-predictions, api-logs). Documents BrentPriceChartWidget's manual registration.

app/Enums/PredictionSource.php

@@ -7,4 +7,13 @@ enum PredictionSource: string
     case Llm = 'llm';
     case LlmWithContext = 'llm_with_context';
     case Ewma = 'ewma';
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::Llm => 'LLM',
+            self::LlmWithContext => 'LLM+Context',
+            self::Ewma => 'EWMA',
+        };
+    }
 }

app/Enums/TrendDirection.php

@@ -7,4 +7,9 @@ enum TrendDirection: string
     case Rising = 'rising';
     case Falling = 'falling';
     case Flat = 'flat';
+
+    public function label(): string
+    {
+        return ucfirst($this->value);
+    }
 }

app/Filament/Widgets/BrentPriceChartWidget.php

@@ -11,6 +11,7 @@ class BrentPriceChartWidget extends ChartWidget
 
     protected ?string $pollingInterval = null;
 
+    /** Registered manually in AdminPanelProvider — excluded from auto-discovery to control placement. */
     protected static bool $isDiscovered = false;
 
     protected function getData(): array

app/Filament/Widgets/StatsOverviewWidget.php

@@ -19,7 +19,7 @@ class StatsOverviewWidget extends BaseWidget
     {
         return [
             $this->usersStat(),
-			$this->searchesStat(),
+            $this->searchesStat(),
             $this->stationsStat(),
             $this->oilPredictionStat(),
             $this->apiErrorsStat(),
@@ -33,12 +33,13 @@ class StatsOverviewWidget extends BaseWidget
             ->color('primary');
     }
 
-	private function searchesStat(): Stat
-	{
-		return Stat::make('Total searches', Search::count())
-			->icon('heroicon-o-magnifying-glass')
-			->color('primary');
-	}
+    private function searchesStat(): Stat
+    {
+        return Stat::make('Total searches', Search::count())
+            ->icon('heroicon-o-magnifying-glass')
+            ->url(route('filament.admin.resources.searches.index'))
+            ->color('primary');
+    }
 
     private function stationsStat(): Stat
     {
@@ -50,6 +51,7 @@ class StatsOverviewWidget extends BaseWidget
 
         return Stat::make('Stations in DB', number_format($count))
             ->description($description)
+            ->url(route('filament.admin.resources.stations.index'))
             ->icon('heroicon-o-map-pin')
             ->color('success');
     }
@@ -66,11 +68,11 @@ class StatsOverviewWidget extends BaseWidget
 
         $ageHours = $prediction->generated_at->diffInHours(now());
         $color = $ageHours > 24 ? 'warning' : 'success';
-        $value = ucfirst($prediction->direction->value)
-            .' · '.$prediction->confidence.'%';
+        $value = $prediction->direction->label().' · '.$prediction->confidence.'%';
 
         return Stat::make('Latest oil prediction', $value)
             ->description('Generated '.$prediction->generated_at->diffForHumans())
+            ->url(route('filament.admin.resources.oil-predictions.index'))
             ->icon('heroicon-o-beaker')
             ->color($color);
     }
@@ -87,6 +89,7 @@ class StatsOverviewWidget extends BaseWidget
 
         return Stat::make('API errors (24h)', $errors)
             ->icon('heroicon-o-exclamation-triangle')
+            ->url(route('filament.admin.resources.api-logs.index'))
             ->color($color);
     }
 }