sdd-workspace now requires the plan file and resolves
.superpowers/sdd/<plan-basename>/; task-brief and review-package write
into their plan's directory (review-package gains PLAN_FILE as its first
argument). Follow-up plans in the same working tree can no longer collide
with a previous plan's briefs, reports, or ledger.
scripts/review-package generates the reviewer's input deterministically:
commit list, stat summary, and net diff with -U10 context, written to a
file from an explicit BASE. Live runs showed controllers improvising
'git diff HEAD~1..HEAD', which silently truncates multi-commit tasks,
and svelte's five fix dispatches shipped without re-running any tests —
fix dispatches now explicitly carry the implementer's
re-run-and-report contract.
