research instructed "spawn one subagent per URL" while its allowed-tools
granted no spawn tool, so it silently degraded to serial fetches. Three
other skills spawn subagents without trouble because they declare no
allowed-tools. The defect was the mismatch, not the spawning.
ADR-0027 records the agreement rule. research drops allowed-tools and
gets its steps 4-5 fan-out and the orchestrator-writes gotcha back
(1.0.1 -> 1.1.0).
Closes#116
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EGHFJextYtVQseaHPDDhxB