feat: add a Tools page printer for note merge and print presets

Chapter officers can merge a markdown note onto filtered students, teams, or events and save the recipe. Extra student-note columns are additional fields (any ## … fields heading) so they work as print tokens whether imported or typed by hand.

Co-authored-by: Cursor <cursoragent@cursor.com>

WebApp/Components/Features/MeetingSchedule/History.razor

@@ -321,7 +321,7 @@
         var dialog = await DialogService.ShowAsync<MeetingHistoryDetailDialog>("Meeting Details", parameters, options);
         var result = await dialog.Result;
 
-        if (!result.Canceled)
+        if (result is { Canceled: false })
         {
             // Refresh data if meeting was updated or deleted
             await RefreshMeetingHistories();

WebApp/Components/Features/MeetingSchedule/Index.razor

@@ -664,7 +664,7 @@
                 Snackbar.Add($"Selected {newCount} new team(s) from clipboard ({totalCount - newCount} already selected)", Severity.Success);
             }
         }
-        catch (JSException ex)
+        catch (JSException)
         {
             Snackbar.Add("Unable to access clipboard. Please ensure clipboard permissions are granted.", Severity.Error);
         }

WebApp/Components/Features/MeetingSchedule/MeetingHistoryDetailDialog.razor

@@ -401,7 +401,7 @@
         var result = await dialog.Result;
 
         // Refresh meeting history if dialog was saved
-        if (!result.Canceled && !_isDisposed)
+        if (result is { Canceled: false } && !_isDisposed)
         {
             await LoadMeetingHistory();
         }

WebApp/Components/Features/MeetingSchedule/ScheduledTeamsList.razor

@@ -11,12 +11,11 @@
 
         <MudStack Row="true" Spacing="2" AlignItems="AlignItems.Center" Class="d-flex align-center">
             <MudStack Row="true" Spacing="1" AlignItems="AlignItems.Center">
-                <MudIcon Icon="@Icons.Material.Filled.Clear"
-                         Size="Size.Small"
-                         Class="@(removed ? "" : "d-none")"
-                         OnClick="@(() => OnToggleTeam.InvokeAsync(team))"
-                         Style="cursor: pointer;">
-                </MudIcon>
+                <MudIconButton Icon="@Icons.Material.Filled.Clear"
+                               Size="Size.Small"
+                               Class="@(removed ? "" : "d-none")"
+                               OnClick="@(() => OnToggleTeam.InvokeAsync(team))"
+                               aria-label="Restore team" />
                 @{
                     var teamMembers = TeamStudentNameFormatter.FormatStudentList(
                         team,