What Happened
- The PR replaces the task editor’s flat file-tree model with a hierarchical `FileNode` structure using per-folder `children`, then normalizes local file paths to POSIX-style relative paths so nested entries render as real hierarchy; this removes duplicated folder/file wrappers seen when Windows paths arrived with backslashes, while keeping initial loading root-only and expanding directories lazily.
- The PR replaces the task editor’s flat file-tree model with a hierarchical `FileNode` structure using per-folder `children`, then normalizes local file paths to POSIX-style relative paths so nested entries render as real hierarchy; this removes duplicated folder/file wrappers seen when Windows paths arrived with backslashes, while keeping initial loading root-only and expanding directories lazily.
- 1 evidence item attached for review.