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>

Tests/Printing/PrintTokenMap_Tests.cs

@@ -0,0 +1,59 @@
+using Core.Printing;
+
+namespace Tests.Printing;
+
+[TestFixture]
+public class PrintTokenMap_Tests
+{
+    [Test]
+    public void Build_BuiltInWinsOverImportedSameName()
+    {
+        var map = PrintTokenMap.Build(
+            new Dictionary<string, string?> { ["Grade"] = "imported" },
+            new Dictionary<string, string?> { ["Grade"] = "9" },
+            null);
+
+        Assert.That(map["Grade"], Is.EqualTo("9"));
+    }
+
+    [Test]
+    public void Build_IncludesAllImportedCatalogKeys()
+    {
+        var imported = new Dictionary<string, string?>
+        {
+            ["Interview Time"] = "3:20-3:35",
+            ["Application"] = null
+        };
+
+        var map = PrintTokenMap.Build(imported, null, null);
+
+        Assert.That(map.ContainsKey("Interview Time"), Is.True);
+        Assert.That(map["Interview Time"], Is.EqualTo("3:20-3:35"));
+        Assert.That(map.ContainsKey("Application"), Is.True);
+        Assert.That(map["Application"], Is.EqualTo(string.Empty));
+    }
+
+    [Test]
+    public void Escape_MasksMarkdownAndHtml()
+    {
+        var escaped = PrintTokenMap.Escape("A *B* <script>");
+
+        Assert.That(escaped, Does.Contain("\\*"));
+        Assert.That(escaped, Does.Contain("&lt;"));
+        Assert.That(escaped, Does.Contain("&gt;"));
+        Assert.That(escaped, Does.Not.Contain("<script>"));
+    }
+
+    [Test]
+    public void Merge_EscapedAsteriskDoesNotStayRaw()
+    {
+        var map = PrintTokenMap.Build(
+            null,
+            new Dictionary<string, string?> { ["FirstName"] = "A*ria" },
+            null);
+
+        var merged = NoteTemplateMerger.Merge("Hi {{FirstName}}", map);
+
+        Assert.That(merged, Is.EqualTo("Hi A\\*ria"));
+    }
+}