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/Pages/ChapterSettings.razor

@@ -95,7 +95,7 @@
         <MudPaper Class="pa-6 mb-4">
             <MudText Typo="Typo.h5" Class="mb-4">Student Index Columns</MudText>
             <MudText Typo="Typo.body2" Class="mb-3">
-                Field names from each student's imported notes table to show as extra Students index columns. Click a field found in notes to add or remove it, or type names (one per line).
+                Field names from each student's additional-fields table to show as extra Students index columns. Click a field found in notes to add or remove it, or type names (one per line).
             </MudText>
             @if (_availableFields.Count > 0)
             {
@@ -117,11 +117,11 @@
             else
             {
                 <MudText Typo="Typo.caption" Class="mud-text-secondary mb-3">
-                    No imported fields found in student notes yet.
+                    No additional fields found in student notes yet.
                 </MudText>
             }
             <MudTextField @bind-Value="_noteFieldsText"
-                          Label="Imported field columns"
+                          Label="Additional field columns"
                           Variant="Variant.Outlined"
                           Lines="5"
                           HelperText="Example: Interview Time" />