Add syncback_encoded_names fixture and related tests for encoded name handling

- Introduced a new fixture `syncback_encoded_names` with various scripts and models demonstrating encoded characters in names, including `What%QUESTION%Module` and `Key%COLON%Script`.
- Added tests to validate the correct handling of encoded names during directory conversions, ensuring that the filesystem names match the expected encoded formats.
- Updated `change_processor.rs` and `api.rs` to improve file handling and metadata management related to encoded names, enhancing overall robustness and consistency in operations.

src/change_processor.rs

@@ -702,8 +702,8 @@ impl JobThreadContext {
                                                     .and_then(|s| s.to_str())
                                                     .unwrap_or("");
                                                 let known_suffixes = [
-                                                    ".server", ".client", ".plugin",
-                                                    ".local", ".legacy",
+                                                    ".server", ".client", ".plugin", ".local",
+                                                    ".legacy",
                                                 ];
                                                 let base = known_suffixes
                                                     .iter()