appendix: 23 Code-Ausschnitte aus dem Houston-Repository

Pin nixpkgs to the revision used by itc.componentware: the channel version
ships a latexminted that crashes on Python 3.14, which made every listing
fail and sent latexmk into an endless error prompt. Also force
nonstopmode/halt-on-error so a broken listing can never loop again.

figures/code/document-name.cs

@@ -0,0 +1,27 @@
+namespace Houston.Model.Documents;
+
+public readonly record struct DocumentName(string Value)
+{
+    public bool Matches(string pattern)
+    {
+        return Value.Contains(pattern, StringComparison.CurrentCultureIgnoreCase);
+    }
+
+    /// <summary>
+    /// Whether this document is a PDF and therefore eligible for the inline modal preview.
+    /// </summary>
+    public bool IsPdf => Value.EndsWith(".pdf", StringComparison.OrdinalIgnoreCase);
+
+    /// <summary>
+    /// Whether this is an external document link (a .URL file).
+    /// </summary>
+    public bool IsLink => Value.EndsWith(".url", StringComparison.OrdinalIgnoreCase);
+
+    /// <summary>
+    /// File display name.
+    /// </summary>
+    public string DisplayName => IsLink ? Value[..^".url".Length] : Value;
+
+    /// <inheritdoc />
+    public override string ToString() => Value;
+}