feat: add lab tests, patient file management, and prescription improvements

app/Services/SyncService.php

@@ -55,7 +55,7 @@ public function sync(): array
         try {
             $pullResponse = Http::timeout(30)
                 ->withHeader('X-Sync-Token', $this->token)
-                ->get("{$baseUrl}/api/sync/export", ['since' => $ourLastSync]);
+                ->get("{$baseUrl}/api/sync/export", ['since' => $peerCursor]);
 
             if ($pullResponse->successful()) {
                 $peerChanges = $pullResponse->json('changes', []);
@@ -69,6 +69,9 @@ public function sync(): array
                         }
                     });
 
+                    $maxPeerChangeId = max(array_column($peerChanges, 'id'));
+                    $this->savePeerCursor(max($peerCursor, $maxPeerChangeId));
+
                     if ($this->isFtpConfigured()) {
                         $this->transferFilesViaFtp($peerChanges, 's2c', $report);
                     } else {
@@ -312,6 +315,15 @@ private function applyChange(array $change, string $prefix, array &$report): voi
         }
     }
 
+    private function savePeerCursor(int $cursor): void
+    {
+        \App\Models\OsurgInitial::updateOrCreate(
+            ['init_parameter' => 'sync_peer_cursor'],
+            ['init_value'     => $cursor],
+        );
+        cache()->forget('osurg_initial.sync_peer_cursor');
+    }
+
     private function sanitize(array $data): array
     {
         $result = [];