feat(m10): file sharing with upload, lightbox, permission, tests, e2e
- FileRepository (CRUD, soft-delete, pagination, project isolation) +
FileStorageService (local FS save data/uploads/<projectId>/<uuid>.<ext>,
MIME allowlist, filename sanitize, unique uuid name, member permission,
file_shared notification to other members, file_uploaded activity log,
SSE file.uploaded, uploader/admin delete + FS unlink)
- APIs: files list/upload(multipart), download (membership), delete
- Screens: files page + Uploader(multipart) + FileList(image Lightbox,
PDF link, delete), ProjectNav ファイル link
- Unit tests (FileRepository, FileStorageService) + e2e file-sharing
60fef5c0c9