feat: merge event rankings and attribute badges into the page printer

Interview notes can print each student's ranked events and a shared attribute legend from the same catalog as the ranking index, without leftover table markup or collapsed answer space.

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

Tests/Printing/NoteTemplateMerger_Tests.cs

@@ -116,4 +116,53 @@ public class NoteTemplateMerger_Tests
         Assert.That(raw, Is.EqualTo($"x{NoteTemplateMerger.AnswerSpaceHtml}y"));
         Assert.That(wrapped, Is.EqualTo(NoteTemplateMerger.AnswerSpaceHtml));
     }
+
+    [Test]
+    public void Merge_RankedStudents_IsHtmlFragmentSentinel()
+    {
+        var result = NoteTemplateMerger.Merge(
+            "{{Name}}\n{{RankedStudents}}",
+            PrintTokenMap.Create());
+
+        Assert.That(result, Does.Contain(NoteTemplateMerger.HtmlFragmentSentinel(NoteTemplateMerger.RankedStudentsToken)));
+        Assert.That(result, Does.Not.Contain("{{RankedStudents}}"));
+    }
+
+    [Test]
+    public void ApplyLayout_ReplacesHtmlFragmentSentinel()
+    {
+        var sentinel = NoteTemplateMerger.HtmlFragmentSentinel(NoteTemplateMerger.RankedStudentsToken);
+        var fragments = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+        {
+            [NoteTemplateMerger.RankedStudentsToken] = "<div class=\"print-rank-badges\">Aria</div>"
+        };
+
+        var raw = NoteTemplateMerger.ApplyLayout($"x{sentinel}y", fragments);
+        var wrapped = NoteTemplateMerger.ApplyLayout($"<p>{sentinel}</p>", fragments);
+        var missing = NoteTemplateMerger.ApplyLayout($"x{sentinel}y");
+
+        Assert.That(raw, Is.EqualTo("x<div class=\"print-rank-badges\">Aria</div>y"));
+        Assert.That(wrapped, Is.EqualTo("<div class=\"print-rank-badges\">Aria</div>"));
+        Assert.That(missing, Is.EqualTo("xy"));
+    }
+
+    [Test]
+    public void Merge_Legend_IsSentinel()
+    {
+        var result = NoteTemplateMerger.Merge("{{Legend}}", PrintTokenMap.Create());
+
+        Assert.That(result, Does.Contain(NoteTemplateMerger.LegendSentinel));
+        Assert.That(result, Does.Not.Contain("{{Legend}}"));
+    }
+
+    [Test]
+    public void ApplyLayout_ReplacesLegendSentinel()
+    {
+        var html = NoteTemplateMerger.ApplyLayout(
+            $"<p>{NoteTemplateMerger.LegendSentinel}</p>");
+
+        Assert.That(html, Does.Contain("print-badge-legend"));
+        Assert.That(html, Does.Contain(EventAttributeMarks.Individual));
+        Assert.That(html, Does.Not.Contain("event-rank-1"));
+    }
 }