Consolidated decision record: source-grounding verification default-on
(plan_review.source_grounding), intel.enabled stays opt-in, and the
three-valued symbol-resolver seam with a climbable adapter ladder.
Refs #22
Co-authored-by: CI Rebase Check <ci@gsd-redux>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
