Merge claudedo/1891227787ae4085a52c112bd1dcd75a

src/ClaudeDo.Data/Filtering/Filters/ReviewFilter.cs

@@ -1,13 +1,12 @@
+using System.Linq.Expressions;
 using ClaudeDo.Data.Models;
 using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 
 namespace ClaudeDo.Data.Filtering.Filters;
 
-public sealed class ReviewFilter : ITaskListFilter
+public sealed class ReviewFilter : TaskListFilterBase
 {
-    public string Id => "virtual:review";
-    public bool Matches(TaskEntity t) =>
-        t.Status == TaskStatus.WaitingForReview;
-    public bool ShouldCount(TaskEntity t) => Matches(t);
-    public bool MatchesAsContext(TaskEntity t, IReadOnlyList<TaskEntity> all) => false;
+    public override string Id => "virtual:review";
+    protected override Expression<Func<TaskEntity, bool>> MatchExpr => t => t.Status == TaskStatus.WaitingForReview;
+    public override bool ShouldCount(TaskEntity t) => Matches(t);
 }

src/ClaudeDo.Data/Filtering/Filters/SmartFlagFilter.cs

@@ -1,3 +1,4 @@
+using System.Linq.Expressions;
 using ClaudeDo.Data.Models;
 using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 
@@ -7,10 +8,11 @@ namespace ClaudeDo.Data.Filtering.Filters;
 /// Filter for a smart list keyed off a boolean/nullable task flag
 /// (My Day, Important, Planned). Counts only non-done matches.
 /// </summary>
-public sealed class SmartFlagFilter(string id, Func<TaskEntity, bool> flag) : ITaskListFilter
+public sealed class SmartFlagFilter(string id, Expression<Func<TaskEntity, bool>> flag) : TaskListFilterBase
 {
-    public string Id => id;
-    public bool Matches(TaskEntity t) => flag(t);
-    public bool ShouldCount(TaskEntity t) => flag(t) && t.Status != TaskStatus.Done;
-    public bool MatchesAsContext(TaskEntity t, IReadOnlyList<TaskEntity> all) => false;
+    private readonly Func<TaskEntity, bool> _flag = flag.Compile();
+
+    public override string Id => id;
+    protected override Expression<Func<TaskEntity, bool>> MatchExpr => flag;
+    public override bool ShouldCount(TaskEntity t) => _flag(t) && t.Status != TaskStatus.Done;
 }

src/ClaudeDo.Data/Filtering/Filters/StatusFilter.cs

@@ -1,3 +1,4 @@
+using System.Linq.Expressions;
 using ClaudeDo.Data.Models;
 using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 
@@ -7,12 +8,12 @@ namespace ClaudeDo.Data.Filtering.Filters;
 /// Virtual list filter matching tasks by a single status (Queued, Running).
 /// Planning parents appear contextually when they host a matching child.
 /// </summary>
-public sealed class StatusFilter(string id, TaskStatus status) : ITaskListFilter
+public sealed class StatusFilter(string id, TaskStatus status) : TaskListFilterBase
 {
-    public string Id => id;
-    public bool Matches(TaskEntity t) => t.Status == status;
-    public bool ShouldCount(TaskEntity t) => t.Status == status;
-    public bool MatchesAsContext(TaskEntity t, IReadOnlyList<TaskEntity> all) =>
+    public override string Id => id;
+    protected override Expression<Func<TaskEntity, bool>> MatchExpr => t => t.Status == status;
+    public override bool ShouldCount(TaskEntity t) => t.Status == status;
+    public override bool MatchesAsContext(TaskEntity t, IReadOnlyList<TaskEntity> all) =>
         PlanningRules.IsPlanningParent(t) &&
         PlanningRules.HasMatchingChild(t, all, c => c.Status == status);
 }

src/ClaudeDo.Data/Filtering/Filters/TaskListFilterBase.cs

@@ -0,0 +1,27 @@
+using System.Linq.Expressions;
+using ClaudeDo.Data.Models;
+
+namespace ClaudeDo.Data.Filtering.Filters;
+
+/// <summary>
+/// Base for <see cref="ITaskListFilter"/> implementations: subclasses express their
+/// primary-match condition once as an expression tree (<see cref="MatchExpr"/>), which
+/// doubles as a SQL-translatable predicate (<see cref="MatchExpression"/>) and, compiled
+/// on first use, as the in-memory <see cref="Matches"/> predicate.
+/// </summary>
+public abstract class TaskListFilterBase : ITaskListFilter
+{
+    private Func<TaskEntity, bool>? _compiled;
+
+    public abstract string Id { get; }
+
+    protected abstract Expression<Func<TaskEntity, bool>> MatchExpr { get; }
+
+    public Expression<Func<TaskEntity, bool>> MatchExpression => MatchExpr;
+
+    public bool Matches(TaskEntity t) => (_compiled ??= MatchExpr.Compile())(t);
+
+    public abstract bool ShouldCount(TaskEntity t);
+
+    public virtual bool MatchesAsContext(TaskEntity t, IReadOnlyList<TaskEntity> all) => false;
+}

src/ClaudeDo.Data/Filtering/Filters/UserListFilter.cs

@@ -1,3 +1,4 @@
+using System.Linq.Expressions;
 using ClaudeDo.Data.Models;
 using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 
@@ -7,7 +8,7 @@ namespace ClaudeDo.Data.Filtering.Filters;
 /// Filter for any user-defined list. Constructed on demand from the list id —
 /// one instance per list.
 /// </summary>
-public sealed class UserListFilter : ITaskListFilter
+public sealed class UserListFilter : TaskListFilterBase
 {
     private readonly string _listId;
 
@@ -17,8 +18,7 @@ public sealed class UserListFilter : ITaskListFilter
         Id = $"user:{listId}";
     }
 
-    public string Id { get; }
-    public bool Matches(TaskEntity t) => t.ListId == _listId;
-    public bool ShouldCount(TaskEntity t) => t.ListId == _listId && t.Status != TaskStatus.Done;
-    public bool MatchesAsContext(TaskEntity t, IReadOnlyList<TaskEntity> all) => false;
+    public override string Id { get; }
+    protected override Expression<Func<TaskEntity, bool>> MatchExpr => t => t.ListId == _listId;
+    public override bool ShouldCount(TaskEntity t) => t.ListId == _listId && t.Status != TaskStatus.Done;
 }

src/ClaudeDo.Data/Filtering/Interfaces/ITaskListFilter.cs

@@ -1,3 +1,4 @@
+using System.Linq.Expressions;
 using ClaudeDo.Data.Models;
 
 namespace ClaudeDo.Data.Filtering;
@@ -15,6 +16,9 @@ public interface ITaskListFilter
     /// <summary>True if <paramref name="t"/> is a primary citizen of this list — appears as a row.</summary>
     bool Matches(TaskEntity t);
 
+    /// <summary>The primary-match predicate as an expression tree, so EF Core can push it into SQL.</summary>
+    Expression<Func<TaskEntity, bool>> MatchExpression { get; }
+
     /// <summary>True if <paramref name="t"/> should be counted in this list's badge.</summary>
     bool ShouldCount(TaskEntity t);
 

src/ClaudeDo.Ui/Design/IslandStyles.axaml

@@ -484,12 +484,21 @@
     <Setter Property="BorderBrush"     Value="{StaticResource AccentBrush}" />
     <Setter Property="BorderThickness" Value="1" />
   </Style>
-  <!-- "Grabbed" row: lift + slight scale + lower opacity + shadow while the custom drag runs. -->
+  <!-- "Grabbed" row: collapses out of layout entirely while the custom drag runs — the
+       floating ghost snapshot (TaskDragController) is what the user sees moving. -->
   <Style Selector="Border.task-row.dragging">
-    <Setter Property="Opacity"         Value="0.55" />
-    <Setter Property="RenderTransform" Value="scale(1.03)" />
-    <Setter Property="BoxShadow"       Value="0 10 26 0 #66000000" />
-    <Setter Property="BorderBrush"     Value="{StaticResource AccentBrush}" />
+    <Setter Property="IsVisible"   Value="False" />
+    <Setter Property="Transitions" Value="{x:Null}" />
+  </Style>
+
+  <!-- Row currently hovered while dragging (shows the dashed drop-hint gap): suppress the
+       ordinary hover highlight and transitions so they don't fight the hint. Placed after
+       Border.task-row:pointerover so its extra class also wins on declaration order. -->
+  <Style Selector="Border.task-row.drop-target">
+    <Setter Property="Transitions" Value="{x:Null}" />
+  </Style>
+  <Style Selector="Border.task-row.drop-target:pointerover">
+    <Setter Property="BorderBrush" Value="{StaticResource LineBrush}" />
   </Style>
 
   <!-- Checkbox indicator (the 18px circle that replaces the native CheckBox template) -->

src/ClaudeDo.Ui/ViewModels/Islands/TaskRowViewModel.cs

@@ -45,6 +45,10 @@ public sealed partial class TaskRowViewModel : ViewModelBase
     // Set by the custom drag while this row is being dragged — drives the "grabbed" row style.
     [ObservableProperty] private bool _isDragging;
 
+    // True while a drag is hovering this row (i.e. it would show a drop-hint gap). Used to
+    // suppress the ordinary hover highlight/transitions so they don't fight the hint.
+    public bool IsDropTarget => DropHintAbove || DropHintBelow;
+
     public bool CanRefine => Status == TaskStatus.Idle && PlanningPhase == PlanningPhase.None
                              && !IsRefining && !IsManual;
 
@@ -289,6 +293,8 @@ public sealed partial class TaskRowViewModel : ViewModelBase
     partial void OnDiffAdditionsChanged(int value) { OnPropertyChanged(nameof(HasDiff)); OnPropertyChanged(nameof(DiffAdditionsText)); }
     partial void OnDiffDeletionsChanged(int value) { OnPropertyChanged(nameof(HasDiff)); OnPropertyChanged(nameof(DiffDeletionsText)); }
     partial void OnRoadblockCountChanged(int value) { OnPropertyChanged(nameof(HasRoadblock)); OnPropertyChanged(nameof(RoadblockTooltip)); }
+    partial void OnDropHintAboveChanged(bool value) => OnPropertyChanged(nameof(IsDropTarget));
+    partial void OnDropHintBelowChanged(bool value) => OnPropertyChanged(nameof(IsDropTarget));
 
     public void RefreshLocalized()
     {

src/ClaudeDo.Ui/ViewModels/Islands/TasksIslandViewModel.cs

@@ -336,26 +336,53 @@ public sealed partial class TasksIslandViewModel : ViewModelBase, IDisposable
         try
         {
             await using var db = await _dbFactory.CreateDbContextAsync(ct);
-            var all = await db.Tasks
-                .Include(t => t.List)
-                .Include(t => t.Worktree)
-                .OrderBy(t => t.SortOrder).ThenBy(t => t.CreatedAt)
-                .ToListAsync(ct);
+            var filter = _filters.Resolve(list.Id);
+            var baseQuery = db.Tasks.Include(t => t.List).Include(t => t.Worktree);
+
+            var filteredList = filter is null
+                ? new List<TaskEntity>()
+                : await baseQuery.Where(filter.MatchExpression).ToListAsync(ct);
 
             ct.ThrowIfCancellationRequested();
 
-            var filter = _filters.Resolve(list.Id);
-            var filteredList = filter is null
-                ? new List<TaskEntity>()
-                : all.Where(t => filter.Matches(t) || filter.MatchesAsContext(t, all)).ToList();
-            var topIds = filteredList.Where(t => t.ParentTaskId == null).Select(t => t.Id).ToHashSet();
-            var existingIds = filteredList.Select(t => t.Id).ToHashSet();
-            foreach (var c in all.Where(t => t.ParentTaskId != null && topIds.Contains(t.ParentTaskId!)))
+            if (filter is not null)
             {
-                if (existingIds.Add(c.Id))
-                    filteredList.Add(c);
+                // Contextual parent rows (e.g. a planning parent hosting an already-matched queued/running
+                // child): only fetch candidates that could plausibly qualify — parents of tasks we already
+                // matched — instead of scanning the whole table.
+                var candidateParentIds = filteredList
+                    .Where(t => t.ParentTaskId != null)
+                    .Select(t => t.ParentTaskId!)
+                    .Distinct()
+                    .ToList();
+                if (candidateParentIds.Count > 0)
+                {
+                    var existingParentIds = filteredList.Select(t => t.Id).ToHashSet();
+                    var parentCandidates = await baseQuery
+                        .Where(t => candidateParentIds.Contains(t.Id) && !existingParentIds.Contains(t.Id))
+                        .ToListAsync(ct);
+                    foreach (var p in parentCandidates)
+                        if (filter.MatchesAsContext(p, filteredList))
+                            filteredList.Add(p);
+                }
             }
 
+            ct.ThrowIfCancellationRequested();
+
+            // Pull in every child of an already-matched top-level row, regardless of whether the child
+            // itself matches the filter, so subtasks render nested under their parent.
+            var topIds = filteredList.Where(t => t.ParentTaskId == null).Select(t => t.Id).ToHashSet();
+            if (topIds.Count > 0)
+            {
+                var existingIds = filteredList.Select(t => t.Id).ToHashSet();
+                var extraChildren = await baseQuery
+                    .Where(t => t.ParentTaskId != null && topIds.Contains(t.ParentTaskId!) && !existingIds.Contains(t.Id))
+                    .ToListAsync(ct);
+                filteredList.AddRange(extraChildren);
+            }
+
+            filteredList = filteredList.OrderBy(t => t.SortOrder).ThenBy(t => t.CreatedAt).ToList();
+
             var showListChip = list.Kind == ListKind.Virtual;
             foreach (var t in filteredList)
             {

src/ClaudeDo.Ui/Views/Islands/TaskRowView.axaml

@@ -7,15 +7,16 @@
              x:DataType="vm:TaskRowViewModel">
   <Grid>
     <Grid.RowDefinitions>
-      <RowDefinition Height="6"/>
+      <RowDefinition Height="Auto"/>
       <RowDefinition Height="Auto"/>
       <RowDefinition Height="Auto"/>
     </Grid.RowDefinitions>
 
-    <!-- Above-row indicator: lives in the 6px gap between cards -->
-    <Border Grid.Row="0" Height="2" VerticalAlignment="Center" Margin="4,0"
-            Background="{DynamicResource MossBrush}" CornerRadius="1"
-            IsVisible="{Binding DropHintAbove}"/>
+    <!-- Above-row indicator: dashed placeholder gap showing where the dragged row will land -->
+    <Grid Grid.Row="0" Height="52" IsVisible="{Binding DropHintAbove}">
+      <Rectangle Margin="4,3" Stroke="{DynamicResource MossBrush}" StrokeThickness="1.5"
+                 StrokeDashArray="4,3" Fill="Transparent" RadiusX="8" RadiusY="8"/>
+    </Grid>
 
     <!-- Indent wrapper: col 0 = 24px child indent track, col 1 = content -->
     <Grid Grid.Row="1" ColumnDefinitions="Auto,*">
@@ -31,58 +32,9 @@
               Margin="0"
               Classes.selected="{Binding IsSelected}"
               Classes.dragging="{Binding IsDragging}"
-              Classes.done="{Binding Done}">
-        <Border.ContextMenu>
-          <ContextMenu>
-            <MenuItem Header="{loc:Tr tasks.ctxSendToQueue}"
-                      IsVisible="{Binding CanSendToQueue}"
-                      Click="OnSendToQueueClick"/>
-            <MenuItem Header="{loc:Tr tasks.ctxRemoveFromQueue}"
-                      IsVisible="{Binding CanRemoveFromQueue}"
-                      Click="OnRemoveFromQueueClick"/>
-            <MenuItem Header="{loc:Tr tasks.ctxCancelExecution}"
-                      IsVisible="{Binding IsRunning}"
-                      Click="OnCancelExecutionClick"/>
-            <Separator/>
-            <MenuItem Header="{loc:Tr tasks.ctxMarkAs}">
-              <MenuItem Header="{loc:Tr tasks.ctxMarkDone}"      Tag="Done"      Click="OnSetStatusClick"/>
-              <MenuItem Header="{loc:Tr tasks.ctxMarkCancelled}" Tag="Cancelled" Click="OnSetStatusClick"/>
-              <Separator/>
-              <MenuItem Header="{loc:Tr tasks.ctxMarkManual}"
-                        IsVisible="{Binding !IsManual}"
-                        Click="OnToggleManualClick"/>
-              <MenuItem Header="{loc:Tr tasks.ctxMarkClaudeTask}"
-                        IsVisible="{Binding IsManual}"
-                        Click="OnToggleManualClick"/>
-            </MenuItem>
-            <Separator/>
-            <MenuItem Header="{loc:Tr tasks.ctxOpenConPtySession}"
-                      Click="OnOpenConPtySessionClick"/>
-            <MenuItem Header="{loc:Tr tasks.ctxOpenPlanningSession}"
-                      Click="OnOpenPlanningSessionClick"
-                      IsVisible="{Binding CanOpenPlanningSession}"/>
-            <MenuItem Header="{loc:Tr tasks.ctxResumePlanningSession}"
-                      Click="OnResumePlanningSessionClick"
-                      IsVisible="{Binding CanResumeOrDiscardPlanning}"/>
-            <MenuItem Header="{loc:Tr tasks.ctxFinalizePlanningSession}"
-                      Click="OnFinalizePlanningSessionClick"
-                      IsVisible="{Binding CanFinalizePlanning}"/>
-            <MenuItem Header="{loc:Tr tasks.ctxDiscardPlanningSession}"
-                      Click="OnDiscardPlanningSessionClick"
-                      IsVisible="{Binding CanResumeOrDiscardPlanning}"/>
-            <Separator/>
-            <MenuItem Header="{loc:Tr tasks.ctxScheduleFor}" Click="OnScheduleForClick"/>
-            <MenuItem Header="{loc:Tr tasks.ctxClearSchedule}"
-                      IsVisible="{Binding HasSchedule}"
-                      Click="OnClearScheduleClick"/>
-            <MenuItem Header="{loc:Tr tasks.ctxAddToMyDay}"
-                      IsVisible="{Binding CanAddToMyDay}"
-                      Click="OnAddToMyDayClick"/>
-            <MenuItem Header="{loc:Tr tasks.ctxRemoveFromMyDay}"
-                      IsVisible="{Binding IsMyDay}"
-                      Click="OnRemoveFromMyDayClick"/>
-          </ContextMenu>
-        </Border.ContextMenu>
+              Classes.drop-target="{Binding IsDropTarget}"
+              Classes.done="{Binding Done}"
+              ContextRequested="OnRowContextRequested">
         <Grid ColumnDefinitions="0,18,32,*,Auto,Auto,32" Margin="6,8,10,8">
 
         <!-- Chevron toggle (only for planning parent tasks) -->
@@ -252,9 +204,9 @@
     </Grid>
 
     <!-- Below-row indicator: only expands when visible (used for the last row of a section) -->
-    <Grid Grid.Row="2" Height="6" IsVisible="{Binding DropHintBelow}">
-      <Border Height="2" VerticalAlignment="Center" Margin="4,0"
-              Background="{DynamicResource MossBrush}" CornerRadius="1"/>
+    <Grid Grid.Row="2" Height="52" IsVisible="{Binding DropHintBelow}">
+      <Rectangle Margin="4,3" Stroke="{DynamicResource MossBrush}" StrokeThickness="1.5"
+                 StrokeDashArray="4,3" Fill="Transparent" RadiusX="8" RadiusY="8"/>
     </Grid>
 
     <!-- Hidden schedule anchor (its Flyout is shown from the context menu) -->

src/ClaudeDo.Ui/Views/Islands/TaskRowView.axaml.cs

@@ -1,9 +1,11 @@
 using System.Linq;
 using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
+using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.VisualTree;
 using ClaudeDo.Data.Models;
+using ClaudeDo.Ui.Localization;
 using ClaudeDo.Ui.ViewModels.Islands;
 using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 
@@ -19,6 +21,57 @@ public partial class TaskRowView : UserControl
         this.GetVisualAncestors().OfType<ItemsControl>()
             .Select(ic => ic.DataContext).OfType<TasksIslandViewModel>().FirstOrDefault();
 
+    // The context menu is built here instead of declared in XAML so the ~18 MenuItems only
+    // exist while a row's menu is actually open, not for every row rendered in the list.
+    private void OnRowContextRequested(object? sender, ContextRequestedEventArgs e)
+    {
+        if (sender is not Border border) return;
+        if (DataContext is not TaskRowViewModel row) return;
+        if (FindTasksVm() is not { } vm) return;
+
+        // OnTunnelPointerPressed (TasksIslandView) only selects on the left button, so
+        // right-click needs its own explicit selection before the menu opens.
+        vm.SelectedTask = row;
+
+        var menu = new ContextMenu { DataContext = row };
+
+        MenuItem MakeItem(string key, EventHandler<RoutedEventArgs> click, bool isVisible = true, string? tag = null)
+        {
+            var item = new MenuItem { Header = Loc.T(key), DataContext = row, IsVisible = isVisible };
+            if (tag is not null) item.Tag = tag;
+            item.Click += click;
+            return item;
+        }
+
+        menu.Items.Add(MakeItem("tasks.ctxSendToQueue", OnSendToQueueClick, row.CanSendToQueue));
+        menu.Items.Add(MakeItem("tasks.ctxRemoveFromQueue", OnRemoveFromQueueClick, row.CanRemoveFromQueue));
+        menu.Items.Add(MakeItem("tasks.ctxCancelExecution", OnCancelExecutionClick, row.IsRunning));
+        menu.Items.Add(new Separator());
+
+        var markAs = new MenuItem { Header = Loc.T("tasks.ctxMarkAs"), DataContext = row };
+        markAs.Items.Add(MakeItem("tasks.ctxMarkDone", OnSetStatusClick, tag: "Done"));
+        markAs.Items.Add(MakeItem("tasks.ctxMarkCancelled", OnSetStatusClick, tag: "Cancelled"));
+        markAs.Items.Add(new Separator());
+        markAs.Items.Add(MakeItem("tasks.ctxMarkManual", OnToggleManualClick, !row.IsManual));
+        markAs.Items.Add(MakeItem("tasks.ctxMarkClaudeTask", OnToggleManualClick, row.IsManual));
+        menu.Items.Add(markAs);
+
+        menu.Items.Add(new Separator());
+        menu.Items.Add(MakeItem("tasks.ctxOpenConPtySession", OnOpenConPtySessionClick));
+        menu.Items.Add(MakeItem("tasks.ctxOpenPlanningSession", OnOpenPlanningSessionClick, row.CanOpenPlanningSession));
+        menu.Items.Add(MakeItem("tasks.ctxResumePlanningSession", OnResumePlanningSessionClick, row.CanResumeOrDiscardPlanning));
+        menu.Items.Add(MakeItem("tasks.ctxFinalizePlanningSession", OnFinalizePlanningSessionClick, row.CanFinalizePlanning));
+        menu.Items.Add(MakeItem("tasks.ctxDiscardPlanningSession", OnDiscardPlanningSessionClick, row.CanResumeOrDiscardPlanning));
+        menu.Items.Add(new Separator());
+        menu.Items.Add(MakeItem("tasks.ctxScheduleFor", OnScheduleForClick));
+        menu.Items.Add(MakeItem("tasks.ctxClearSchedule", OnClearScheduleClick, row.HasSchedule));
+        menu.Items.Add(MakeItem("tasks.ctxAddToMyDay", OnAddToMyDayClick, row.CanAddToMyDay));
+        menu.Items.Add(MakeItem("tasks.ctxRemoveFromMyDay", OnRemoveFromMyDayClick, row.IsMyDay));
+
+        menu.Open(border);
+        e.Handled = true;
+    }
+
     private async void OnSendToQueueClick(object? sender, RoutedEventArgs e)
     {
         if (DataContext is TaskRowViewModel row && FindTasksVm() is { } vm)

tests/ClaudeDo.Data.Tests/Filtering/MatchExpressionSqlTests.cs

@@ -0,0 +1,57 @@
+using ClaudeDo.Data.Filtering.Filters;
+using Microsoft.EntityFrameworkCore;
+using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
+
+namespace ClaudeDo.Data.Tests.Filtering;
+
+/// <summary>
+/// Proves that <see cref="ClaudeDo.Data.Filtering.ITaskListFilter.MatchExpression"/> is a real
+/// expression tree that EF Core can translate into SQL, not just an in-memory delegate — the
+/// whole point of splitting it out from <c>Matches</c>.
+/// </summary>
+public sealed class MatchExpressionSqlTests : IDisposable
+{
+    private readonly string _dbPath;
+    private readonly DbContextOptions<ClaudeDoDbContext> _options;
+
+    public MatchExpressionSqlTests()
+    {
+        _dbPath = Path.Combine(Path.GetTempPath(), $"claudedo_matchexpr_{Guid.NewGuid():N}.db");
+        _options = new DbContextOptionsBuilder<ClaudeDoDbContext>()
+            .UseSqlite($"Data Source={_dbPath}")
+            .Options;
+
+        using var ctx = new ClaudeDoDbContext(_options);
+        ctx.Database.EnsureCreated();
+    }
+
+    public void Dispose()
+    {
+        foreach (var suffix in new[] { "", "-wal", "-shm" })
+            try { File.Delete(_dbPath + suffix); } catch { }
+    }
+
+    [Fact]
+    public void StatusFilter_MatchExpression_translates_to_a_SQL_WHERE_on_status()
+    {
+        var filter = new StatusFilter("virtual:queued", TaskStatus.Queued);
+
+        using var ctx = new ClaudeDoDbContext(_options);
+        var sql = ctx.Tasks.Where(filter.MatchExpression).ToQueryString();
+
+        Assert.Contains("WHERE", sql, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("status", sql, StringComparison.OrdinalIgnoreCase);
+    }
+
+    [Fact]
+    public void UserListFilter_MatchExpression_translates_to_a_SQL_WHERE_on_list_id()
+    {
+        var filter = new UserListFilter("abc");
+
+        using var ctx = new ClaudeDoDbContext(_options);
+        var sql = ctx.Tasks.Where(filter.MatchExpression).ToQueryString();
+
+        Assert.Contains("WHERE", sql, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("list_id", sql, StringComparison.OrdinalIgnoreCase);
+    }
+}

tests/ClaudeDo.Worker.Tests/UiVm/TaskRowViewModelTests.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using ClaudeDo.Data.Models;
 using ClaudeDo.Ui.ViewModels.Islands;
 using Xunit;
@@ -20,4 +21,25 @@ public class TaskRowViewModelTests
         vm.Status = s;
         Assert.Equal(expected, vm.StatusChipClass);
     }
+
+    [Fact]
+    public void IsDropTarget_Follows_Either_DropHint_And_Raises_PropertyChanged()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = new List<string?>();
+        vm.PropertyChanged += (_, e) => raised.Add(e.PropertyName);
+
+        Assert.False(vm.IsDropTarget);
+
+        vm.DropHintAbove = true;
+        Assert.True(vm.IsDropTarget);
+        Assert.Contains(nameof(TaskRowViewModel.IsDropTarget), raised);
+
+        vm.DropHintAbove = false;
+        vm.DropHintBelow = true;
+        Assert.True(vm.IsDropTarget);
+
+        vm.DropHintBelow = false;
+        Assert.False(vm.IsDropTarget);
+    }
 }