Merge branch 'develop' into claude/3-13-0-perf-blog-a3ba5b

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

docs/mkdocs/mkdocs.yml

@@ -132,6 +132,7 @@ nav:
           - features/element_access/unchecked_access.md
           - features/element_access/checked_access.md
           - features/element_access/default_value.md
+      - features/files.md
       - features/iterators.md
       - features/merge_patch.md
       - features/json_patch.md