adds logging and policies

app/Http/Controllers/ScreeningController.php

@@ -7,8 +7,10 @@
 use App\Http\Requests\Screening\UpdateScreeningRequest;
 use App\Models\Category;
 use App\Models\Screening;
+use App\Services\ActivityLogger;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Arr;
 use Inertia\Inertia;
 use Inertia\Response;
 
@@ -23,6 +25,8 @@ public function store(Request $request): RedirectResponse
             'user_id' => auth()->id(),
         ]);
 
+        ActivityLogger::log('screening_started', auth()->id());
+
         return redirect()->route('screening.show', $screening);
     }
 
@@ -44,8 +48,10 @@ public function update(UpdateScreeningRequest $request, Screening $screening): R
     {
         $validated = $request->validated();
 
-        $this->saveAnswers($screening, $validated['answers']);
-        $this->calculateAndUpdateScore($screening, $validated['answers']);
+        $this->saveAnswers($screening, Arr::get($validated, 'answers'));
+        $this->calculateAndUpdateScore($screening, Arr::get($validated, 'answers'));
+
+        ActivityLogger::log('screening_completed', auth()->id(), metadata: ['score' => $screening->score, 'passed' => $screening->passed]);
 
         return redirect()->route('screening.result', $screening);
     }