CRUCIBLE_SKIP_LFS env is the single skip mechanism; BuildAndPackageOptions had a dead SkipLFS field that implied the option propagated through the build API but was only ever env-bridged in the CLI run functions. Replace the struct field with a local buildTopDataArgs wrapper and set the env at the CLI entry point directly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>