Implement many more nodes

Adds these new styling and formatting nodes
* strike
* highlight
* linebreaks
* pagebreaks
* Hyperlinks

test/style_test.rb

@@ -168,4 +168,56 @@ class StyleTest < Minitest::Test
     assert_includes styles_xml, 'w:ascii="Arial"'
     assert_includes styles_xml, '<w:jc w:val="center"'
   end
+
+  def test_style_with_highlight
+    xml_files = create_doc_and_read_all_xml do |doc|
+      doc.define_style :highlighted, highlight: "yellow"
+      doc.p "Highlighted", style: :highlighted
+    end
+
+    styles_xml = xml_files["word/styles.xml"]
+    assert_includes styles_xml, '<w:highlight w:val="yellow"'
+  end
+
+  def test_style_with_strikethrough
+    xml_files = create_doc_and_read_all_xml do |doc|
+      doc.define_style :deleted, strike: true
+      doc.p "Deleted", style: :deleted
+    end
+
+    styles_xml = xml_files["word/styles.xml"]
+    assert_includes styles_xml, "<w:strike/>"
+  end
+
+  def test_invalid_highlight_raises_error
+    assert_raises(ArgumentError) do
+      Notare::Style.new(:bad, highlight: "invalid_color")
+    end
+  end
+
+  def test_valid_highlight_colors
+    # Test a few valid highlight colors
+    %w[yellow red blue green cyan magenta].each do |color|
+      style = Notare::Style.new(:test, highlight: color)
+      assert_equal color, style.highlight
+    end
+  end
+
+  def test_highlight_in_text_run
+    xml_files = create_doc_and_read_all_xml do |doc|
+      doc.define_style :yellow_highlight, highlight: "yellow"
+      doc.p do
+        doc.text "Normal "
+        doc.text "highlighted", style: :yellow_highlight
+      end
+    end
+
+    # Highlight is in the style definition, not inline when using style reference
+    styles_xml = xml_files["word/styles.xml"]
+    assert_includes styles_xml, '<w:highlight w:val="yellow"'
+
+    document_xml = xml_files["word/document.xml"]
+    assert_includes document_xml, '<w:rStyle w:val="YellowHighlight"'
+    assert_includes document_xml, "highlighted"
+  end
 end