Fix empty attendance list: auto-generate records when session is opened

When a trainer opens a session for attendance, if no attendance_records
exist (e.g. sessions created before enrollments were activated), the
system now auto-generates 'expected' records from active enrollments.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Livewire/Attendance/QuickAttendance.php

@@ -4,6 +4,7 @@
 
 use App\Domain\Attendance\Enums\AttendanceStatus;
 use App\Domain\Attendance\Models\AttendanceRecord;
+use App\Domain\Attendance\Services\AttendanceGenerationService;
 use App\Domain\Attendance\Services\AttendanceMarkingService;
 use App\Domain\Scheduling\Models\Assignment;
 use App\Domain\Shared\Traits\UsesBranchScope;
@@ -32,10 +33,22 @@ public function mount(): void
         $this->authorize('attendance.mark');
     }
 
-    public function selectSession(int $sessionId): void
+    public function selectSession(int $sessionId, AttendanceGenerationService $generationService): void
     {
         $this->selectedSessionId = $sessionId;
         $this->saved = false;
+
+        $hasRecords = AttendanceRecord::where('training_session_id', $sessionId)
+            ->where('subject_type', \App\Domain\Participant\Models\Participant::class)
+            ->exists();
+
+        if (!$hasRecords) {
+            $session = TrainingSession::find($sessionId);
+            if ($session) {
+                $generationService->generateForSession($session);
+            }
+        }
+
         $this->loadMarks();
     }
 

app/Livewire/Attendance/TakeAttendance.php

@@ -4,6 +4,7 @@
 
 use App\Domain\Attendance\Enums\AttendanceStatus;
 use App\Domain\Attendance\Models\AttendanceRecord;
+use App\Domain\Attendance\Services\AttendanceGenerationService;
 use App\Domain\Attendance\Services\AttendanceMarkingService;
 use App\Domain\Training\Models\TrainingSession;
 use Livewire\Attributes\Layout;
@@ -21,11 +22,16 @@ class TakeAttendance extends Component
     /** @var array<int, string> Per-record notes keyed by record id */
     public array $recordNotes = [];
 
-    public function mount(TrainingSession $session): void
+    public function mount(TrainingSession $session, AttendanceGenerationService $generationService): void
     {
         $this->authorize('attendance.mark');
         $this->session = $session->load(['group']);
         $this->sessionNotes = $this->session->notes ?? '';
+
+        $hasRecords = AttendanceRecord::where('training_session_id', $this->session->id)->exists();
+        if (!$hasRecords) {
+            $generationService->generateForSession($this->session);
+        }
     }
 
     public function saveNotes(): void