Functional data-entry surface on the (still preview) /retirement page.
The polished combined-page UI is PR4; this ships plain forms + lists so
a preview user can populate a plan end to end.
- RetirementScoped concern: tier-1 preview gate + tier-2 family
killswitch + per-owner plan bootstrap (Goal::Retirement.for_owner
find-or-creates, so children always have a parent). RetirementController
now uses it.
- Nested controllers under Retirement::: PensionSources (full CRUD),
Statements (new/create + soft-delete destroy — append-only audit),
Adjustments (full CRUD), Buckets (replace-all account selection,
same-family filtered). All scoped to the current user's own plan, so
cross-user access is impossible by construction.
- Routes nested under `resource :retirement` via `scope module:`.
- Views: show page rewritten into management sections (sources,
adjustments, bucket checkboxes, statement journal) + plain
styled_form_with forms. Money carries privacy-sensitive.
- Goal gains a target_amount_required? hook (true); Goal::Retirement
overrides it false — the forecast owns the target (PR3), so a plan
can exist before any target is set.
- EN locale for the new surface. 111 controller+model tests green.
Note: delete uses Turbo confirm for now; PR4 swaps in the skinned
DS::Dialog per the design.
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