Add AI batch reconciliation for accessibility bills

frontend/lib/shared/services/screenshot_channel.dart

@@ -138,6 +138,8 @@ class RecognitionCandidate {
   final String? merchant, orderId, sourceText, note;
   final String recognitionKind, amountSource;
   final String? categoryHint, resultFingerprint;
+  final String? batchId, aiAction, aiReason;
+  final int? categoryId;
   final int occurredAtEpochMs;
 
   RecognitionCandidate.fromJson(Map<String, dynamic> value)
@@ -155,13 +157,68 @@ class RecognitionCandidate {
       note = value['note'] as String?,
       recognitionKind = value['recognitionKind']?.toString() ?? 'payment',
       categoryHint = value['categoryHint']?.toString(),
+      categoryId = (value['categoryId'] as num?)?.toInt(),
       amountSource = value['amountSource']?.toString() ?? 'result',
       resultFingerprint = value['resultFingerprint']?.toString(),
+      batchId = value['batchId']?.toString(),
+      aiAction = value['aiAction']?.toString(),
+      aiReason = value['aiReason']?.toString(),
       occurredAtEpochMs = (value['occurredAtEpochMs'] as num).toInt();
 
   bool get canAutoImport => state == 'auto_ready' && confidence == 'auto';
 }
 
+class RecognitionBatchItem {
+  final String candidateId, action, reason, state, type;
+  final double amount;
+  final String? merchant;
+  final bool canRestore;
+
+  RecognitionBatchItem.fromJson(Map<String, dynamic> value)
+    : candidateId = value['candidateId']?.toString() ?? '',
+      action = value['action']?.toString() ?? 'keep',
+      reason = value['reason']?.toString() ?? '',
+      state = value['state']?.toString() ?? '',
+      type = value['type']?.toString() ?? 'expense',
+      amount = (value['amount'] as num?)?.toDouble() ?? 0,
+      merchant = value['merchant']?.toString(),
+      canRestore = value['canRestore'] as bool? ?? false;
+}
+
+class RecognitionBatch {
+  final String id, state;
+  final DateTime openedAt, completedAt;
+  final int kept, updated, created, dropped;
+  final bool fallback;
+  final String? failureReason;
+  final List<RecognitionBatchItem> items;
+
+  RecognitionBatch.fromJson(Map<String, dynamic> value)
+    : id = value['id']?.toString() ?? '',
+      state = value['state']?.toString() ?? '',
+      openedAt = DateTime.fromMillisecondsSinceEpoch(
+        (value['openedAt'] as num?)?.toInt() ?? 0,
+        isUtc: true,
+      ),
+      completedAt = DateTime.fromMillisecondsSinceEpoch(
+        (value['completedAt'] as num?)?.toInt() ?? 0,
+        isUtc: true,
+      ),
+      kept = ((value['summary'] as Map?)?['kept'] as num?)?.toInt() ?? 0,
+      updated = ((value['summary'] as Map?)?['updated'] as num?)?.toInt() ?? 0,
+      created = ((value['summary'] as Map?)?['created'] as num?)?.toInt() ?? 0,
+      dropped = ((value['summary'] as Map?)?['dropped'] as num?)?.toInt() ?? 0,
+      fallback = ((value['summary'] as Map?)?['fallback'] as bool?) ?? false,
+      failureReason = value['failureReason']?.toString(),
+      items = (value['items'] as List<dynamic>? ?? const [])
+          .map(
+            (item) => RecognitionBatchItem.fromJson(
+              Map<String, dynamic>.from(item as Map),
+            ),
+          )
+          .toList(growable: false);
+}
+
 class SpeechEvent {
   final String type;
   final String? text;
@@ -398,6 +455,37 @@ class ScreenshotChannel {
     }
   }
 
+  static Future<List<RecognitionBatch>> listRecognitionBatches() async {
+    try {
+      final values =
+          await _channel.invokeMethod<List<Object?>>(
+            'listRecognitionBatches',
+          ) ??
+          const [];
+      return values
+          .whereType<String>()
+          .map(
+            (value) => RecognitionBatch.fromJson(
+              jsonDecode(value) as Map<String, dynamic>,
+            ),
+          )
+          .toList(growable: false);
+    } on MissingPluginException {
+      return const [];
+    }
+  }
+
+  static Future<bool> restoreDroppedRecognition(String candidateId) async {
+    try {
+      return await _channel.invokeMethod<bool>('restoreDroppedRecognition', {
+            'candidateId': candidateId,
+          }) ??
+          false;
+    } on MissingPluginException {
+      return false;
+    }
+  }
+
   static Future<bool> requestNotificationPermission() async {
     try {
       return await _channel.invokeMethod<bool>(