Polish home page: clamp tile teasers, balance hero heading, fix embed gap

Elternbeirat.Web.Tests/MarkdownTests.cs

@@ -104,11 +104,17 @@ public class MarkdownTests
     }
 
     [Fact]
-    public void First_sentence_longer_than_the_limit_is_cut_between_words()
-    {
-        var sentence = Markdown.FirstSentence("Eins zwei drei vier fünf.", maxLength: 12);
+    public void First_sentence_drops_a_colon_that_leads_into_a_list() =>
+        Markdown.FirstSentence("Formulare zum Herunterladen:\n\n- Antrag")
+            .ShouldBe("Formulare zum Herunterladen");
 
-        sentence.ShouldBe("Eins zwei…");
+    [Fact]
+    public void First_sentence_is_never_cut_short()
+    {
+        // Long teasers are clamped by the tile's CSS, not by a character count.
+        var sentence = string.Join(' ', Enumerable.Repeat("Wort", 60)) + ".";
+
+        Markdown.FirstSentence(sentence).ShouldBe(sentence);
     }
 
     [Theory]
@@ -119,8 +125,4 @@ public class MarkdownTests
     [InlineData("::: hinweis\nText im Baustein.\n:::")]
     public void First_sentence_is_empty_without_a_top_level_paragraph(string? markdown) =>
         Markdown.FirstSentence(markdown).ShouldBe("");
-
-    [Fact]
-    public void First_sentence_rejects_a_limit_below_one() =>
-        Should.Throw<ArgumentOutOfRangeException>(() => Markdown.FirstSentence("Text.", maxLength: 0));
 }