Remove background-transition phases from /ultraresearch-local,
/ultraplan-local, /ultra-cc-architect-local, /ultrabrief-local.
All four commands now run their full pipelines inline in main
context; --fg is retained as a no-op alias for backwards
compatibility.
The Claude Code harness does not expose the Agent tool to
sub-agents, so orchestrators launched with run_in_background:true
cannot spawn their documented swarms (docs-researcher,
community-researcher, architecture-mapper, plan-critic, etc.) and
silently degrade to single-context reasoning. Foreground execution
keeps the swarms intact.
Source: github.com/anthropics/claude-code/issues/19077
Confirmed empirically 2026-04-19.
BREAKING CHANGE: Default execution is foreground — the session
blocks until the brief/plan is ready. Use `claude -p` in a
separate terminal for long-running headless work.
4bba65cddf