fix(swimming): insert player_medical_records on medical cert upload for medical board visibility

The medical board page reads from player_medical_records table. Without this insert,
uploaded certificates would not appear in /medical-board for approval, and the player
status would stay 'pending' forever.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Modules/SportsActivity/Controllers/Swimming/SwimmingRegistrationController.php

@@ -196,6 +196,20 @@ class SwimmingRegistrationController extends Controller
             'updated_at'      => date('Y-m-d H:i:s'),
         ]);
 
+        $db->insert('player_medical_records', [
+            'player_id'       => null,
+            'sa_player_id'    => $playerId,
+            'record_type'     => 'fitness_cert',
+            'sa_document_id'  => $docId,
+            'exam_date'       => $examDate,
+            'expiry_date'     => $expiryDate,
+            'approval_status' => 'pending',
+            'source'          => 'sports_activity',
+            'created_by'      => $employeeId,
+            'created_at'      => date('Y-m-d H:i:s'),
+            'updated_at'      => date('Y-m-d H:i:s'),
+        ]);
+
         $db->update('sa_players', [
             'medical_status'      => 'pending',
             'medical_expiry_date' => $expiryDate,