The incremental sync used `find -type f` which misses symlinks (type l),
so dataset symlinks were never detected and synced to the sandbox.
Additionally, `tar.add()` without `dereference=True` would store broken
symlinks pointing to host-only paths.
- _list_local_changed_files: match both regular files and symlinks
- _tar_workspace_entries: dereference symlinks to pack actual content
- Unify dataset path to `datasets/` (plural) in prompts and SKILL.md
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Convert all Chinese comments, docstrings, logger/print output,
HTTPException detail messages, and API response messages to English
across the entire codebase. Functional zh/ja localized strings
(e.g. prompt templates, timezone display names, date formats) are
preserved as-is.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
