Agent Skills: review-team

Run a multi-persona review team over an SDD artifact - fan the crew out as parallel subagents that deposit findings to a review blackboard, then reduce them into one scored, coverage-aware report. The shared mechanism behind the team mode of doc-*-audit (review), doc-*-fixer (remediate), and doc-*-autopilot (create). Use at quality gates; falls back to single_pass when subagents are unavailable.