Bug:
Choreographer.i_will_plan() built spec_ctx with the raw plan string
while ctx (_ClaimPlanStartContext) got the resolved (panel-shaped)
dict. The verb runner uses spec_ctx — so the rich shape never reached
TaskService.set_plan. The panel's Plan tab stayed empty even when
PMs supplied approach / sub_tasks / risks.
Fix:
Pass the resolved (possibly-dict) plan into spec_ctx too. Widened
lifecycle.Context.plan to `str | dict[str, Any] | None` to match.
Tightened _resolve_effective_plan to require a non-empty narrative
paragraph — rich structure layers on top of prose, not in place of it.