Merge branch 'vacation-rescue-and-wrap'

Vacation rescue/wrap in allocation_service, new plan models/endpoints,
VacationRescueTip, useRescueDayActions, vacationSwaps util, sv+en i18n,
Dashboard/Calendar wiring.

Conflicts came from main's "day assertions" restructure and the earlier
merges; both intents kept:

- plan.py: both import sets; main's sync-with-wish handler kept next to the
  branch's new /rescue-days/dismiss endpoint; HTTP_422_UNPROCESSABLE_CONTENT
  applied to the branch's code (and a survivor in auth.py).
- Accepting a rescue day now goes through POST /api/day-assertions (an
  ad-hoc 'vacation' assertion, no wish) instead of /plan/apply with an
  `is_pinned` flag that no longer exists: on main a pin IS a day assertion
  (see PlanningService.add_planned_day's docstring), and an assertion is
  what keeps a later sync from retyping the day. useRescueDayActions,
  its tests, VacationRescueTip's tests and the backend integration flow
  follow that contract; applyPlan stays as a client for the live endpoint
  minus the dropped field. The hook also gets the security branch's
  useLatestRequest guard with an unconditionally cleared busy flag.
- Calendar.tsx: `locale` threaded into main's applyWishSyncResult call of
  buildSyncToastMessage (the branch's new parameter); the branch's
  swap-visibility toast tests drive the preset path through syncWithWish,
  which is how main saves a wish now.
- types/api.ts: ProposedDayApplyItem kept (used by applyPlan) without
  isPinned; the Add/UpdatePlannedDayRequest types stay removed as on main.
- fixtures/plan.ts: ResourceShortage import dropped (type removed on main).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T4wjgbVL4HAC5Rdaw75VbV

frontend/tests/fixtures/hooks.ts

@@ -29,6 +29,7 @@ import type { useChildSettings } from '@/hooks/useChildSettings'
 import type { useCalendarDays } from '@/hooks/useCalendarDays'
 import type { usePreschoolPlanningDays } from '@/hooks/usePreschoolPlanningDays'
 import type { usePreschoolPlanningDaysList } from '@/hooks/usePreschoolPlanningDaysList'
+import type { useRescueDayActions } from '@/hooks/useRescueDayActions'
 import type { useShowWeekNumbers } from '@/hooks/useCalendarPreferences'
 import { makeChild, makePersonalData, makeVacationDays, makeWorkspace, makeParentalLeaveFetch } from './mockData'
 import { makeWorkspaceOverview } from './analytics'
@@ -294,6 +295,19 @@ export function makePreschoolPlanningDaysResult(
   }
 }
 
+export function makeRescueDayActionsResult(
+  overrides: Partial<ReturnType<typeof useRescueDayActions>> = {},
+): ReturnType<typeof useRescueDayActions> {
+  return {
+    isLoading: false,
+    error: null,
+    acceptDay: vi.fn(),
+    acceptAll: vi.fn(),
+    dismiss: vi.fn(),
+    ...overrides,
+  }
+}
+
 export function makePreschoolPlanningDaysListResult(
   overrides: Partial<ReturnType<typeof usePreschoolPlanningDaysList>> = {},
 ): ReturnType<typeof usePreschoolPlanningDaysList> {