feat: add path.get-directory-name helper for consistent directory name extraction

snowfall-lib/path/default.nix

@@ -133,5 +133,18 @@ in
     #@ Path -> String
     get-output-name = path: 
       builtins.unsafeDiscardStringContext (get-parent-directory path);
+
+    ## Get the directory name for flake outputs.
+    ## Example Usage:
+    ## ```nix
+    ## get-directory-name /templates/foo
+    ## ```
+    ## Result:
+    ## ```nix
+    ## "foo"
+    ## ```
+    #@ Path -> String
+    get-directory-name = path: 
+      builtins.unsafeDiscardStringContext (baseNameOf path);
   };
 }

snowfall-lib/template/default.nix

@@ -41,7 +41,7 @@ in
             description = flake-attrs.description or null;
           in
           {
-            name = builtins.unsafeDiscardStringContext (baseNameOf template);
+            name = snowfall-lib.path.get-directory-name template;
             path = template;
           }
           // (if description != null then { inherit description; } else { });