Why: archived card must carry the real GATE history (reruns), merge chain
and cleanup facts before the closure PR merges.
Evidence: PR 589 merged at 8218685 (runs/3437 + rerun all-success); Frontend
#96, RDM #412/#418 merged earlier in the cascade.
Impact: archive bookkeeping only.
Refs: PR #590
Why: branches merged into main had left their task cards open; backfill status and archive to prevent bookkeeping debt.
Evidence: feature-document-visualization-cockpit-i2.md(PR#589) — merges verified via git log --merges plus Gitea API squash lookup against origin/main.
Impact: .task/*.md moved to .task/archive/ with status backfilled; no code or submodule change.
Refs: task.sh close (card-autoclose-r1)