diff --git a/web/src/dinners/AddToWeekSheet.tsx b/web/src/dinners/AddToWeekSheet.tsx
index f656e30..0998ae2 100644
--- a/web/src/dinners/AddToWeekSheet.tsx
+++ b/web/src/dinners/AddToWeekSheet.tsx
@@ -1,6 +1,6 @@
 import { useId, useState } from 'react'
 import { Link } from 'react-router'
-import { usePlan, useSwapDay, type PlanDinner, type Swap } from '../plan/api.ts'
+import { usePlan, useWeekSwap, type PlanDinner, type Swap } from '../plan/api.ts'
 import { cooking } from '../plan/PlanPage.tsx'
 import swapStyles from '../plan/SwapSheet.module.css'
 import { addDays, dayOfMonth, localNow, weekdayName, weekLabel, weekStart as weekOf } from '../plan/week.ts'
@@ -41,13 +41,14 @@ type WeekDaysProps = {
 }
 
 // WeekDays is the seven days of the week starting on week, each with its
-// dinner; choosing one swaps the dinner in through the Plan's own swap
-// (useSwapDay). A week with no plan offers to draft it on the Draft board:
+// dinner; choosing one swaps the dinner in as the Draft board swaps a day
+// (useWeekSwap). A week with no plan offers to draft it on the Draft board:
 // nothing here makes a plan up. A dinner already on the week can't be added
-// again, nor can one while a change to the week is still being saved.
+// again, nor can one while a swap of the week is still being saved or the
+// week is being pushed to Calendar.
 function WeekDays({ dinner, week, which, onAdd }: WeekDaysProps) {
   const plan = usePlan(week)
-  const swap = useSwapDay(week)
+  const { swap, push, refused, swapIn } = useWeekSwap(week)
 
   if (plan.isError) {
     return <ErrorBanner onRetry={() => void plan.refetch()}>Couldn't load {weekNames[which]}'s plan. {plan.error.message}</ErrorBanner>
@@ -74,10 +75,10 @@ function WeekDays({ dinner, week, which, onAdd }: WeekDaysProps) {
 
   const days = plan.data.days
   const planned = days.find((day) => day.dinner.id === dinner.id)
-  const choosable = planned === undefined && !swap.pending
+  const choosable = planned === undefined && !refused
   function add(date: string) {
     const chosen: Swap = { date, dinner: planDinner(dinner), fromQuestLog: dinner.status === 'quest_log' }
-    swap.mutate(chosen)
+    swapIn(chosen)
     onAdd({ week, which, swap: chosen })
   }
   return (
@@ -86,8 +87,10 @@ function WeekDays({ dinner, week, which, onAdd }: WeekDaysProps) {
         <p className={swapStyles.empty}>
           {dinner.name} is already on {weekdayName(planned.date)} {weekNames[which]}.
         </p>
+      ) : swap.pending ? (
+        <p className={swapStyles.empty}>A change to {weekNames[which]} is still being saved.</p>
       ) : (
-        swap.pending && <p className={swapStyles.empty}>A change to {weekNames[which]} is still being saved.</p>
+        push.pending && <p className={swapStyles.empty}>The plan for {weekNames[which]} is being pushed to Calendar.</p>
       )}
       <ul aria-label={`Days of ${weekNames[which]}`} className={swapStyles.rows}>
         {days.map((day) => (
diff --git a/web/src/dinners/DinnerDetailActions.test.tsx b/web/src/dinners/DinnerDetailActions.test.tsx
index f77d155..dc967a4 100644
--- a/web/src/dinners/DinnerDetailActions.test.tsx
+++ b/web/src/dinners/DinnerDetailActions.test.tsx
@@ -7,6 +7,7 @@ import { createNetworkStatus } from '../pwa/networkStatus.ts'
 import { HOUSEHOLD_SETTINGS } from '../test/ApiProviders.tsx'
 import { errorResponse, fakeLocation, jsonResponse, ME } from '../test/fetchStub.ts'
 import { mockViewport } from '../test/matchMedia.ts'
+import { PlanPage } from '../plan/PlanPage.tsx'
 import { DinnerDetailPage } from './DinnerDetailPage.tsx'
 
 const DINNER = '/api/v1/dinners/d1'
@@ -66,7 +67,7 @@ function planBody(weekStart: string, names: string[], ids = names.map((_, i) =>
     week_start: weekStart,
     status: 'draft',
     ai_note: null,
-    calendar_synced_at: null,
+    calendar_synced_at: null as string | null,
     days: names.map((name, i) => ({
       date: new Date(start + i * 86_400_000).toISOString().slice(0, 10),
       dinner: { id: ids[i], name, photo: null, minutes: 30, method: 'stovetop' },
@@ -127,14 +128,15 @@ function deferred() {
 }
 
 // renderPage loads /me (for the CSRF token every write needs) and renders
-// the bowls' detail screen, with a probe for the Plan.
-async function renderPage() {
+// the bowls' detail screen, with plan for the Plan: a probe unless told
+// otherwise. It answers with the router.
+async function renderPage(plan = <h1>Plan probe</h1>) {
   const api = createApiClient(fakeLocation('/dinner/d1'), createNetworkStatus(window), createVerifiedSession(localStorage))
   await api.loadMe()
   const router = createMemoryRouter(
     [
       { path: '/dinner/:id', element: <DinnerDetailPage /> },
-      { path: '/plan', element: <h1>Plan probe</h1> },
+      { path: '/plan', element: plan },
     ],
     { initialEntries: ['/dinner/d1'] },
   )
@@ -146,6 +148,7 @@ async function renderPage() {
     </ApiProvider>,
   )
   await screen.findByRole('heading', { level: 1, name: 'Korean beef bowls' })
+  return router
 }
 
 // openSheet opens Add to this week and waits for the week's days.
@@ -289,6 +292,70 @@ describe('Add to this week', () => {
     expect(screen.queryByRole('alert')).not.toBeInTheDocument()
     expect(sent(fetchMock, 'PUT')).toEqual([`${THURSDAY} {"dinner_id":"d1"}`, `${THURSDAY} {"dinner_id":"d1"}`])
   })
+
+  it("leaves a push's Supply run outcome behind on the Plan, as a swap on the Draft board does", async () => {
+    let plan = planBody('2026-10-05', THIS_NAMES)
+    const fetchMock = stubServer({
+      [`GET ${THIS_WEEK}`]: () => jsonResponse(200, plan),
+      [`POST ${THIS_WEEK}/push-calendar`]: () => {
+        plan = { ...plan, status: 'synced', calendar_synced_at: '2026-10-07T16:00:00Z' }
+        return jsonResponse(200, { ...plan, supply_run: { status: 'generated', error: null } })
+      },
+      [`PUT ${THURSDAY}`]: () => {
+        plan = { ...thursdaySwapped(), status: 'changed', calendar_synced_at: '2026-10-07T16:00:00Z' }
+        return jsonResponse(200, plan)
+      },
+      'GET /api/v1/shopping/2026-10-05': () => errorResponse(404, 'not_found'),
+    })
+    const router = await renderPage(<PlanPage />)
+
+    // The week is pushed on the Plan, which says its Supply run was made.
+    await act(() => router.navigate('/plan'))
+    fireEvent.click(await screen.findByRole('button', { name: 'Looks good — push to Calendar' }))
+    expect(await screen.findByRole('status')).toHaveTextContent("Made this week's Supply run from the plan.")
+    // Coming back from the dinner with nothing swapped, it still says so.
+    await act(() => router.navigate('/dinner/d1'))
+    await screen.findByRole('heading', { level: 1, name: 'Korean beef bowls' })
+    await act(() => router.navigate('/plan'))
+    expect(await screen.findByRole('status')).toHaveTextContent("Made this week's Supply run from the plan.")
+
+    // Thursday is swapped from the dinner's Add to this week.
+    await act(() => router.navigate('/dinner/d1'))
+    await screen.findByRole('heading', { level: 1, name: 'Korean beef bowls' })
+    const { days } = await openSheet()
+    fireEvent.click(within(days).getByRole('button', { name: /Thursday 8/ }))
+    await waitFor(() => expect(screen.getByRole('status')).toHaveTextContent('Added to Thursday this week.'))
+
+    // The Plan shows the swapped plan, not changed since its push, and no
+    // longer says the earlier plan's Supply run was made.
+    await act(() => router.navigate('/plan'))
+    expect(await screen.findByText('Changes not pushed to Google Calendar')).toBeInTheDocument()
+    expect(screen.getByText('Korean beef bowls')).toBeInTheDocument()
+    expect(screen.queryByRole('status')).not.toBeInTheDocument()
+    expect(screen.queryByText("Made this week's Supply run from the plan.")).not.toBeInTheDocument()
+    expect(sent(fetchMock, 'POST')).toEqual([`${THIS_WEEK}/push-calendar undefined`])
+    expect(sent(fetchMock, 'PUT')).toEqual([`${THURSDAY} {"dinner_id":"d1"}`])
+  })
+
+  it('refuses a swap while the week is being pushed to Calendar', async () => {
+    const push = deferred()
+    const fetchMock = stubServer({
+      [`GET ${THIS_WEEK}`]: () => jsonResponse(200, planBody('2026-10-05', THIS_NAMES)),
+      [`POST ${THIS_WEEK}/push-calendar`]: () => push.response,
+      'GET /api/v1/shopping/2026-10-05': () => errorResponse(404, 'not_found'),
+    })
+    const router = await renderPage(<PlanPage />)
+    await act(() => router.navigate('/plan'))
+    fireEvent.click(await screen.findByRole('button', { name: 'Looks good — push to Calendar' }))
+    await waitFor(() => expect(sent(fetchMock, 'POST')).toHaveLength(1))
+
+    await act(() => router.navigate('/dinner/d1'))
+    await screen.findByRole('heading', { level: 1, name: 'Korean beef bowls' })
+    const { sheet, days } = await openSheet()
+    expect(within(sheet).getByText('The plan for this week is being pushed to Calendar.')).toBeInTheDocument()
+    expect(within(days).queryAllByRole('button')).toHaveLength(0)
+    expect(sent(fetchMock, 'PUT')).toEqual([])
+  })
 })
 
 describe('the favorite heart', () => {
diff --git a/web/src/dinners/DinnerDetailPage.tsx b/web/src/dinners/DinnerDetailPage.tsx
index c68a270..140236c 100644
--- a/web/src/dinners/DinnerDetailPage.tsx
+++ b/web/src/dinners/DinnerDetailPage.tsx
@@ -3,7 +3,7 @@ import { ChevronLeft, Heart } from 'lucide-react'
 import { useEffect, useState } from 'react'
 import { Link, useLocation, useNavigate, useParams } from 'react-router'
 import { ApiError } from '../api/errors.ts'
-import { planKey, usePlan, useSwapDay } from '../plan/api.ts'
+import { planKey, usePlan, useWeekSwap } from '../plan/api.ts'
 import { duration } from '../plan/PlanPage.tsx'
 import { weekdayName } from '../plan/week.ts'
 import { useBreakpoint } from '../shell/useBreakpoint.ts'
@@ -128,13 +128,14 @@ function Recipe({ dinner }: { dinner: DinnerDetail }) {
 }
 
 // AddedStatus says what became of a dinner added to a day: being saved,
-// added, or why it couldn't be, with Retry, which sends the same swap again.
-// The week's plan stays read while it shows, so a retry finds the day to
-// swap; once added, the plan is read again from the server.
+// added, or why it couldn't be, with Retry, which sends the same swap again
+// as the Draft board would (useWeekSwap), and is not offered while that is
+// refused. The week's plan stays read while it shows, so a retry finds the
+// day to swap; once added, the plan is read again from the server.
 function AddedStatus({ added }: { added: Added }) {
   const queryClient = useQueryClient()
   usePlan(added.week)
-  const swap = useSwapDay(added.week)
+  const { swap, refused, swapIn } = useWeekSwap(added.week)
   const { date } = added.swap
   const done = swap.succeeded === added.swap
   const failed = swap.failed?.swap === added.swap ? swap.failed.error : null
@@ -145,7 +146,7 @@ function AddedStatus({ added }: { added: Added }) {
   if (failed !== null) {
     return (
       <div className={styles.status}>
-        <ErrorBanner onRetry={() => swap.mutate(added.swap)}>
+        <ErrorBanner onRetry={refused ? undefined : () => swapIn(added.swap)}>
           Couldn't add it to {weekdayName(date)} {weekNames[added.which]}. {failed.message}
         </ErrorBanner>
       </div>
diff --git a/web/src/plan/PlanPage.tsx b/web/src/plan/PlanPage.tsx
index 87124ba..f6828b8 100644
--- a/web/src/plan/PlanPage.tsx
+++ b/web/src/plan/PlanPage.tsx
@@ -23,9 +23,8 @@ import {
   parseDraftResult,
   planKey,
   usePlan,
-  usePushToCalendar,
   useStartDraft,
-  useSwapDay,
+  useWeekSwap,
   type DraftResult,
   type Plan,
   type PlanDay,
@@ -266,8 +265,7 @@ function WeekBoard({
   const [jobId, setJobId] = useState<string | null>(null)
   const job = useJob<unknown>(DRAFT_JOB_KIND, jobId)
   const [confirming, setConfirming] = useState(false)
-  const swap = useSwapDay(weekStart)
-  const push = usePushToCalendar(weekStart)
+  const { swap, push, refused, swapIn: sendSwap } = useWeekSwap(weekStart)
   const run = useSupplyRun(weekStart)
   // Makes the week's Supply run again after a push could not make it.
   const generate = useGenerateSupplyRun(weekStart)
@@ -431,25 +429,18 @@ function WeekBoard({
     <ErrorBanner onRetry={() => void run.refetch()}>Couldn't load this week's shopping list. {run.error.message}</ErrorBanner>
   )
 
-  // swapIn sends the swap chosen in the sheet and closes it.
+  // swapIn sends the swap chosen in the sheet, dropped on a day or retried
+  // (useWeekSwap) and closes the sheet. The Supply run made again on the
+  // Plan after a push is left behind with the push.
   function swapIn(chosen: Swap) {
     setSwappingDate(null)
-    push.reset()
     generate.reset()
-    swap.mutate(chosen)
+    sendSwap(chosen)
   }
-  // dropIn swaps in a dinner dragged onto a day. A drag is not picked up,
-  // nor dropped, while a swap of the week is pending.
-  function dropIn(chosen: Swap) {
-    swap.dismiss()
-    swapIn(chosen)
-  }
-  // openSwap opens the swap sheet on a day. One swap of the week is sent at
-  // a time, even across leaving the week and coming back: the plan the
-  // server answers it with must not overwrite another still pending. Nor is
-  // one sent while the week is being pushed to Calendar.
+  // openSwap opens the swap sheet on a day, unless a swap is refused now
+  // (useWeekSwap). A drag is not picked up, nor dropped, then either.
   function openSwap(date: string) {
-    if (swap.pending || pushing) return
+    if (refused) return
     swap.dismiss()
     setSwappingDate(date)
   }
@@ -488,7 +479,7 @@ function WeekBoard({
     body =
       layout !== 'mobile' ? (
         <>
-          <DropBoard days={days} pending={swap.pending || pushing} drop={dropIn} />
+          <DropBoard days={days} pending={refused} drop={swapIn} />
           <ul className={`${styles.week} ${styles[layout]}`} aria-label="Dinners this week">
             {days.map((day) => (
               <DayColumn
diff --git a/web/src/plan/api.ts b/web/src/plan/api.ts
index 8541d2d..1c49a38 100644
--- a/web/src/plan/api.ts
+++ b/web/src/plan/api.ts
@@ -532,6 +532,37 @@ export function usePushToCalendar(weekStart: string): PushToCalendar {
   }
 }
 
+// WeekSwap is the one way a day of a week is swapped, wherever the swap is
+// chosen: the week's swaps and pushes, whether a swap is refused now, and
+// swapIn to send one.
+export type WeekSwap = {
+  swap: SwapDay
+  push: PushToCalendar
+  refused: boolean
+  swapIn: (chosen: Swap) => void
+}
+
+// useWeekSwap swaps a day of the week starting on weekStart, from the Draft
+// board or a dinner's Add to this week. One swap of the week is sent at a
+// time, even across leaving the week and coming back: the plan the server
+// answers it with must not overwrite another still pending. Nor is one sent
+// while the week is being pushed to Calendar: refused says so, and swapIn
+// then throws. A swap leaves the week's settled swaps behind, and its
+// pushes: what a push said of Calendar and the Supply run was said of the
+// plan before the swap, not the one swapped.
+export function useWeekSwap(weekStart: string): WeekSwap {
+  const swap = useSwapDay(weekStart)
+  const push = usePushToCalendar(weekStart)
+  const refused = swap.pending || push.pending
+  function swapIn(chosen: Swap) {
+    if (refused) throw new Error(`The week of ${weekStart} has a swap or push pending, so ${chosen.date} cannot be swapped.`)
+    swap.dismiss()
+    push.reset()
+    swap.mutate(chosen)
+  }
+  return { swap, push, refused, swapIn }
+}
+
 // settleUnmadePushes is called as the Supply run of the week starting on
 // weekStart starts being made, from the Plan or the Supply run screen
 // (useGenerateSupplyRun). The function it answers with is called once the