Show the partner's name, and count in the unit that was asked for

A partner added during onboarding appeared as "Parent 2" on the overview
until you navigated away and back: the members list had been fetched before
that partner existed and nothing refetched when the wizard finished. The
fallback was doing its job; it was covering for stale data.

A period drawn on the calendar is measured in days, but a shortfall was
reported in the weeks the engine had rounded it to, so seven days came back
as three weeks. It now reports what was actually asked for.

frontend/src/pages/Dashboard.tsx

@@ -1,4 +1,4 @@
-import { ReactNode, useState } from 'react'
+import { ReactNode, useEffect, useRef, useState } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { useWorkspace } from '@/context'
 import {
@@ -47,7 +47,7 @@ export function Dashboard(): ReactNode {
   )
   const { data: plannedDays, isLoading: pdLoading } = usePlannedDays(selectedChildId ?? undefined)
   const { data: parentalLeave, refresh: refreshParentalLeave } = useParentalLeave(personalDataUuid, selectedChildId ?? null)
-  const { data: members, isLoading: membersLoading } = useWorkspaceMembers(workspace?.id ?? null)
+  const { data: members, isLoading: membersLoading, refresh: refreshMembers } = useWorkspaceMembers(workspace?.id ?? null)
   const { data: tips, dismiss: dismissTip } = useOptimizationTips(workspace?.id ?? null)
   const scraper = useScraperFetch()
 
@@ -56,6 +56,23 @@ export function Dashboard(): ReactNode {
   const [isManualFetchSaving, setIsManualFetchSaving] = useState(false)
   const [manualFetchError, setManualFetchError] = useState<string | null>(null)
 
+  // `useWorkspaceMembers` fetches once per `workspace.id`, which never
+  // changes across onboarding — so a couple's partner, added mid-wizard via
+  // `Onboarding.tsx`'s own direct `api.addPartner` call, is invisible to
+  // this hook's already-fetched `data` until something explicitly refetches
+  // it. `Onboarding` only refreshes `WorkspaceContext` (which flips
+  // `children` from empty to non-empty) when it finishes — it has no way to
+  // reach into this component's `useWorkspaceMembers` instance. Watching
+  // that same empty-to-non-empty transition here is what tells this
+  // component "onboarding just finished, the members list might be stale."
+  const wasAwaitingFirstChildRef = useRef(children.length === 0)
+  useEffect(() => {
+    if (wasAwaitingFirstChildRef.current && children.length > 0) {
+      void refreshMembers()
+    }
+    wasAwaitingFirstChildRef.current = children.length === 0
+  }, [children.length, refreshMembers])
+
   const isLoading = wsLoading || analyticsLoading || pdLoading
 
   if (isLoading) {