feat(android): add attachment config dialog and FJ- scan in registration

Co-Authored-By: Claude <noreply@anthropic.com>

lib/pages/registration/parts/registration_submit_part.dart

@@ -110,6 +110,38 @@ extension _RegistrationSubmitPart on _RegistrationPageState {
   }
 
   Future<void> _submitOne(String baseUrl, String zongpaiNo) async {
+    // Attachment scan: submit via POST /attachment/location instead
+    final pendingCat = _pendingAttachmentCategory;
+    if (pendingCat != null) {
+      final ok = await _submitAttachmentLocation(
+        baseUrl,
+        zongpaiNo,
+        pendingCat,
+      );
+      if (!mounted) return;
+      setState(() {
+        _isSubmitting = false;
+        _pendingAttachmentCategory = null;
+      });
+      if (ok) {
+        _feedbackService.trigger(FeedbackEvent.submitSuccess);
+        setState(() {
+          _zongpaiNos.remove(zongpaiNo);
+          if (_mode == RegistrationMode.singleCode && !_isTempStorageTarget) {
+            _locationCode = null;
+            _locationType = null;
+          }
+        });
+        _showStatusOverride(
+          '附件上架成功',
+          StatusDotColor.green,
+          const Duration(milliseconds: 1500),
+        );
+        await _refreshCurrentOverview();
+      }
+      return;
+    }
+
     final result = await _apiService.registerLocation(
       baseUrl: baseUrl,
       zongpaiNo: zongpaiNo,