Why: PR #567 is merged and its task card must be backfilled and archived without touching other pending cards.
Evidence: Exact HEAD 3ffd641 passed test, test-pg, and svc-realcombo; merge d51828a has the same tree as the candidate; task-finish recycled the task worktree and branches.
Impact: Moves only feature-goal-first-delivery.md to .task/archive and records final delivery evidence.
Refs: #567, #518
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