Add assess_empty_queue_report to block empty-queue claims without
pr_inventory_trust_gate.status == trusted_empty, reject weak merge-commit
corroboration, extend inventory handoff fields, and wire the gate into
build_final_report and capability-stop terminal validation.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Enter terminal mode when review_pr/merge_pr capability is denied. Block
reviewer queue tools (list_prs, eligibility checks) and add report-purity
validators for forbidden PR selection, fallback, and empty-queue claims.
Closes#197
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>