Properties documents passed through charset decoding alone, leaving Unicode escapes in the shared document text.
- Add a default-off "Transparent native-to-ascii conversion" setting under the properties encoding and a stable action. Changing it reloads clean properties buffers in place; dirty buffers keep their codec.
- Decode eligible escapes and surrogate pairs when constructing documents, and save non-ASCII as uppercase escapes in pure ASCII. Backslash pairs, malformed escapes, unpaired surrogates and line terminator escapes stay literal, so an edit cannot split a property across lines.
- Use the same codec for search, closed-file readers, Git diffs, staging and partial commits. Clean saves and undone edits preserve the original bytes.
Fixes#519
l0ng-ai