8 sites across 3 orchestrator agents + trekbrief/trekplan/trekresearch asserted 'the harness does not expose the Agent tool to sub-agents' as present fact -- the rationale for the v2.4.0 inline migration. CC 2.1.172 (verified) lets sub-agents spawn sub-agents up to 5 levels deep, so the claim is false. Replaced each with verified history (pre-2.1.172) + current fact + forward pointer to the decision matrix (W1/CC-26). Decision-neutral: states fact without pre-empting the orchestration redesign. CHANGELOG history left untouched. Tests 578/0/2; claude plugin validate passes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LqBYc8Ltrk7LipyJmGxXiB
Redefine research-orchestrator, planning-orchestrator, and
architect-orchestrator from "background executor" to "inline
reference documentation". The agent files remain as the canonical
workflow descriptions, but the /ultra* commands now execute the
phases directly in the main command context instead of spawning
these agents as sub-agents.
The /ultra* command markdowns are now the de-facto orchestrators.
Splitting work into a separate sub-agent was incompatible with the
harness's treatment of the Agent tool (not exposed to sub-agents).
BREAKING CHANGE: These agents are no longer invoked. Any external
integration that spawned them directly should now invoke the
corresponding /ultra* command instead.
Add /ultraresearch-local for structured research combining local codebase
analysis with external knowledge via parallel agent swarms. Produces research
briefs with triangulation, confidence ratings, and source quality assessment.
New command: /ultraresearch-local with modes --quick, --local, --external, --fg.
New agents: research-orchestrator (opus), docs-researcher, community-researcher,
security-researcher, contrarian-researcher, gemini-bridge (all sonnet).
New template: research-brief-template.md.
Integration: --research flag in /ultraplan-local accepts pre-built research
briefs (up to 3), enriches the interview and exploration phases. Planning
orchestrator cross-references brief findings during synthesis.
Design principle: Context Engineering — right information to right agent at
right time. Research briefs are structured artifacts in the pipeline:
ultraresearch → brief → ultraplan --research → plan → ultraexecute.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
