Why: U2's first slice landed via main (PR #396/#401); the plan card's next-task line must point at the remaining U2 delta instead of the closed task.
Evidence: SELF - documents gitlink advanced; merged main range 555fb2162f..c622372 (96 commits) inspected.
Impact: task metadata and submodule pointer only.
Refs: .task/archive/feature-svc-autorecover.md