fixed some issues and added label and, or capability

lib/providers/tx_meta_provider.dart

@@ -800,6 +800,7 @@ class TxMetaController extends ChangeNotifier {
     List<BankTransaction> txs,
     String query, {
     Set<String> labelIds = const {},
+    LabelMatchMode labelMatch = LabelMatchMode.and,
   }) {
     final needle = query.trim().toLowerCase();
     final hasText = needle.isNotEmpty;
@@ -809,7 +810,15 @@ class TxMetaController extends ChangeNotifier {
     final labelIndex = _labelById;
     return [
       for (final tx in txs)
-        if (_matchesSearch(tx, needle, hasText, labelIds, hasLabels, labelIndex))
+        if (_matchesSearch(
+          tx,
+          needle,
+          hasText,
+          labelIds,
+          hasLabels,
+          labelMatch,
+          labelIndex,
+        ))
           tx,
     ];
   }
@@ -820,10 +829,11 @@ class TxMetaController extends ChangeNotifier {
     bool hasText,
     Set<String> labelIds,
     bool hasLabels,
+    LabelMatchMode labelMatch,
     Map<String, TxLabel> labelIndex,
   ) {
     final meta = metaFor(tx);
-    if (hasLabels && !_matchesLabelFilter(meta, labelIds)) {
+    if (hasLabels && !_matchesLabelFilter(meta, labelIds, labelMatch)) {
       return false;
     }
     if (!hasText) return true;
@@ -838,20 +848,33 @@ class TxMetaController extends ChangeNotifier {
     return false;
   }
 
-  /// AND filter: every selected label must be on the tx.
+  /// AND: every selected label must be on the tx.
+  /// OR: at least one selected label (or unlabeled, if that filter is set).
   ///
-  /// Uncategorized alone matches unlabeled txs. Uncategorized combined with
-  /// other labels matches nothing (a tx cannot be both).
-  bool _matchesLabelFilter(TxMeta meta, Set<String> labelIds) {
+  /// Uncategorized alone matches unlabeled txs. Uncategorized + others with
+  /// AND matches nothing; with OR matches unlabeled or any of the labels.
+  bool _matchesLabelFilter(
+    TxMeta meta,
+    Set<String> labelIds,
+    LabelMatchMode mode,
+  ) {
     final wantUncategorized = labelIds.contains(kUncategorizedFilterId);
     final required = <String>[
       for (final id in labelIds)
         if (id != kUncategorizedFilterId) id,
     ];
-    if (wantUncategorized) {
-      if (required.isNotEmpty) return false;
-      return !meta.hasLabel;
+    if (required.isEmpty) {
+      if (wantUncategorized) return !meta.hasLabel;
+      return true;
     }
+    if (mode == LabelMatchMode.or) {
+      if (wantUncategorized && !meta.hasLabel) return true;
+      for (final id in required) {
+        if (meta.labelIds.contains(id)) return true;
+      }
+      return false;
+    }
+    if (wantUncategorized) return false;
     for (final id in required) {
       if (!meta.labelIds.contains(id)) return false;
     }