feat: update button (download, verify, stage)

web/src/components/UpdateBanner.vue

@@ -1,11 +1,29 @@
 <script setup lang="ts">
-export type UpdateBannerState = 'available'
+import { computed } from 'vue'
 
-defineProps<{
+export type UpdateBannerState = 'available' | 'ready'
+
+const props = defineProps<{
 	state: UpdateBannerState
 	version: string
 }>()
 
+const COPY = {
+	available: {
+		icon: 'i-lucide-circle-arrow-up',
+		title: (version: string) => `Version ${version} is available`,
+		description: 'Update it from Settings. It takes about 2 minutes and the site stays online.',
+	},
+	ready: {
+		icon: 'i-lucide-circle-check',
+		title: (version: string) => `Version ${version} is ready to install`,
+		description:
+			'Restart from Settings to finish. The site is unavailable for about 10 seconds.',
+	},
+} as const
+
+const copy = computed(() => COPY[props.state])
+
 const emit = defineEmits<{
 	'go-to-settings': []
 	dismiss: []
@@ -19,9 +37,9 @@ const emit = defineEmits<{
 		color="info"
 		variant="soft"
 		orientation="horizontal"
-		icon="i-lucide-circle-arrow-up"
-		:title="`Version ${version} is available`"
-		description="Update it from Settings. It takes about 2 minutes and the site stays online."
+		:icon="copy.icon"
+		:title="copy.title(version)"
+		:description="copy.description"
 		:ui="{
 			root: 'flex-wrap items-start gap-x-2.5 gap-y-3 border border-default py-3 ring-0 md:flex-nowrap md:items-center',
 			wrapper: 'basis-0 gap-0.5',

web/src/components/UpdateProgress.vue

@@ -0,0 +1,22 @@
+<script setup lang="ts">
+defineProps<{
+	label: string
+	text: string
+	value: number | null
+}>()
+</script>
+
+<template>
+	<div aria-live="off" class="flex flex-col gap-1.5 pt-2">
+		<UProgress
+			:model-value="value"
+			:max="100"
+			:get-value-label="() => label"
+			:ui="{
+				base: 'h-1.5 bg-accented',
+				indicator: value === null ? 'h-full w-7/20 bg-primary' : 'bg-primary',
+			}"
+		/>
+		<span class="font-mono text-xs/4 text-muted">{{ text }}</span>
+	</div>
+</template>

web/src/components/UpdateStatusBlock.vue

@@ -17,6 +17,7 @@ const props = defineProps<{
 	title: string
 	text: string
 	meta?: string
+	live?: 'polite' | 'off'
 }>()
 
 const toneClasses = computed(() => TONE_CLASSES[props.tone])
@@ -24,7 +25,7 @@ const spinning = computed(() => props.icon === 'i-lucide-loader-circle')
 </script>
 
 <template>
-	<div aria-live="polite" class="flex gap-3 p-3.5" :class="toneClasses.block">
+	<div :aria-live="live ?? 'polite'" class="flex gap-3 p-3.5" :class="toneClasses.block">
 		<span class="flex pt-0.5">
 			<UIcon
 				:name="icon"
@@ -38,6 +39,7 @@ const spinning = computed(() => props.icon === 'i-lucide-loader-circle')
 		<div class="flex min-w-0 flex-1 flex-col gap-1">
 			<span class="text-base font-semibold text-highlighted">{{ title }}</span>
 			<span class="text-sm text-pretty text-toned">{{ text }}</span>
+			<slot />
 			<span v-if="meta" class="text-xs/5 text-muted">{{ meta }}</span>
 		</div>
 	</div>

web/src/components/UpdatesCard.vue

@@ -1,18 +1,33 @@
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, nextTick, ref, watch } from 'vue'
 import ReleaseNotes from '@/components/ReleaseNotes.vue'
 import ServerCommand from '@/components/ServerCommand.vue'
+import UpdateProgress from '@/components/UpdateProgress.vue'
 import UpdateStatusBlock, { type UpdateTone } from '@/components/UpdateStatusBlock.vue'
 import type { UpdateStatus } from '@/composables/useUpdate'
 import type { UserRole } from '@/composables/useApi'
-import type { UpdateCheckPhase } from '@/stores/update'
+import type { UpdateApplyPhase, UpdateCheckPhase } from '@/stores/update'
 import {
 	ENABLE_BROWSER_UPDATES_COMMAND,
+	VERIFYING_ANNOUNCEMENT,
 	displayVersion,
+	downloadAnnouncement,
+	formatDownloadProgress,
 	formatLastChecked,
 	formatReleased,
 } from '@/lib/updateFormat'
 
+type ApplyView =
+	| 'available'
+	| 'downloading'
+	| 'verifying'
+	| 'ready'
+	| 'download-failed'
+	| 'verification-failed'
+	| 'limited'
+
+type ButtonAction = 'check' | 'update'
+
 interface Block {
 	tone: UpdateTone
 	icon: string
@@ -26,26 +41,208 @@ interface ActionButton {
 	icon: string
 	primary: boolean
 	disabled: boolean
+	action: ButtonAction | null
 }
 
+interface ProgressView {
+	label: string
+	text: string
+	value: number | null
+}
+
+const AVAILABLE_HINT = 'Takes about 2 minutes. Your site stays online.'
+const READY_HINT =
+	'Not now? Leave this page. The update waits here, and the banner on Home reminds you.'
+const ZERO_PROGRESS = { percent: 0, downloaded_bytes: 0, total_bytes: 0 }
+
 const props = defineProps<{
 	status: UpdateStatus
 	role: UserRole | undefined
 	phase: UpdateCheckPhase
+	applyPhase: UpdateApplyPhase
 	retryLabel: string
 	retryActive: boolean
 }>()
 
 const emit = defineEmits<{
 	check: []
+	update: []
 }>()
 
+const heading = ref<HTMLElement | null>(null)
+
 const isOwner = computed(() => props.role === 'owner')
 const newVersion = computed(() => displayVersion(props.status.latest))
 const lastChecked = computed(() =>
 	props.status.checked_at ? formatLastChecked(props.status.checked_at) : undefined,
 )
 
+const canApplyView = computed(() => isOwner.value && props.status.can_apply)
+
+const applyView = computed<ApplyView | null>(() => {
+	if (!canApplyView.value || props.phase !== 'idle') {
+		return null
+	}
+	if (props.applyPhase === 'limited') {
+		return 'limited'
+	}
+	if (props.applyPhase === 'failed') {
+		return 'download-failed'
+	}
+	if (props.applyPhase === 'untrusted') {
+		return 'verification-failed'
+	}
+	const { state, error, available } = props.status
+	if (state === 'downloading' || state === 'verifying' || state === 'ready') {
+		return state
+	}
+	if (state === 'failed') {
+		return error === 'verification' ? 'verification-failed' : 'download-failed'
+	}
+	return available ? 'available' : null
+})
+
+const isStarting = computed(() => props.applyPhase === 'starting')
+
+const downloadFailed = computed(() => applyView.value === 'download-failed' && !isStarting.value)
+
+watch(downloadFailed, async (failed) => {
+	if (failed) {
+		await nextTick()
+		heading.value?.focus()
+	}
+})
+
+const applyBlocks = computed<Record<ApplyView, Block>>(() => ({
+	available: {
+		tone: 'info',
+		icon: 'i-lucide-circle-arrow-up',
+		title: `Version ${newVersion.value} is available`,
+		text: `You have ${props.status.current}. Update downloads the new version and checks it. Nothing changes until you restart.`,
+		meta: lastChecked.value,
+	},
+	downloading: {
+		tone: 'info',
+		icon: 'i-lucide-download',
+		title: `Downloading version ${newVersion.value}…`,
+		text: 'You can leave this page. The download continues and your site stays online.',
+	},
+	verifying: {
+		tone: 'info',
+		icon: 'i-lucide-shield-check',
+		title: 'Checking the download…',
+		text: 'Making sure the file is complete and safe to install. This takes a few seconds.',
+	},
+	ready: {
+		tone: 'success',
+		icon: 'i-lucide-circle-check',
+		title: `Version ${newVersion.value} is ready to install`,
+		text: 'The download is checked. Restart to install it. Your site will be unavailable for about 10 seconds.',
+		meta: 'Nothing has changed yet.',
+	},
+	'download-failed': {
+		tone: 'error',
+		icon: 'i-lucide-circle-x',
+		title: "The download didn't finish",
+		text: 'The connection dropped before the file was complete. Nothing was changed and your site is running as before.',
+	},
+	'verification-failed': {
+		tone: 'warning',
+		icon: 'i-lucide-triangle-alert',
+		title: "We didn't use this update",
+		text: "The file didn't pass our safety check, so it was not installed. Nothing was changed. Try downloading it again. If this keeps happening, contact RenewCMS support.",
+	},
+	limited: {
+		tone: 'info',
+		icon: 'i-lucide-info',
+		title: 'Too many tries',
+		text: 'Wait a moment before trying again.',
+	},
+}))
+
+const progressView = computed<ProgressView | null>(() => {
+	if (applyView.value === 'downloading') {
+		const progress = props.status.progress ?? ZERO_PROGRESS
+		return {
+			label: `Downloading version ${newVersion.value}`,
+			text: props.status.progress ? formatDownloadProgress(progress) : '0%',
+			value: progress.percent,
+		}
+	}
+	if (applyView.value === 'verifying') {
+		return { label: VERIFYING_ANNOUNCEMENT, text: 'Almost there', value: null }
+	}
+	return null
+})
+
+const announcement = computed(() => {
+	if (applyView.value === 'downloading') {
+		return downloadAnnouncement(newVersion.value, props.status.progress?.percent ?? 0)
+	}
+	return applyView.value === 'verifying' ? VERIFYING_ANNOUNCEMENT : ''
+})
+
+const hint = computed(() => {
+	if (applyView.value === 'available') {
+		return AVAILABLE_HINT
+	}
+	return applyView.value === 'ready' ? READY_HINT : null
+})
+
+function applyButton(view: ApplyView): ActionButton {
+	if (isStarting.value || view === 'downloading' || view === 'verifying') {
+		return {
+			label: 'Updating…',
+			icon: 'i-lucide-loader-circle',
+			primary: false,
+			disabled: true,
+			action: null,
+		}
+	}
+	if (view === 'ready') {
+		return {
+			label: 'Restart',
+			icon: 'i-lucide-power',
+			primary: true,
+			disabled: true,
+			action: null,
+		}
+	}
+	if (view === 'limited') {
+		return props.retryActive
+			? {
+					label: `Try again in ${props.retryLabel}`,
+					icon: 'i-lucide-clock',
+					primary: false,
+					disabled: true,
+					action: null,
+				}
+			: {
+					label: 'Try again',
+					icon: 'i-lucide-rotate-cw',
+					primary: false,
+					disabled: false,
+					action: 'update',
+				}
+	}
+	if (view === 'available') {
+		return {
+			label: 'Update',
+			icon: 'i-lucide-download',
+			primary: true,
+			disabled: false,
+			action: 'update',
+		}
+	}
+	return {
+		label: 'Try again',
+		icon: 'i-lucide-rotate-cw',
+		primary: true,
+		disabled: false,
+		action: 'update',
+	}
+}
+
 const block = computed<Block>(() => {
 	if (isOwner.value && props.phase === 'checking') {
 		return {
@@ -72,6 +269,9 @@ const block = computed<Block>(() => {
 			meta: lastChecked.value,
 		}
 	}
+	if (applyView.value) {
+		return applyBlocks.value[applyView.value]
+	}
 	if (props.status.available && isOwner.value) {
 		return {
 			tone: 'info',
@@ -100,7 +300,11 @@ const block = computed<Block>(() => {
 })
 
 const showServerGuidance = computed(
-	() => isOwner.value && props.status.available && props.phase === 'idle',
+	() =>
+		isOwner.value &&
+		!props.status.can_apply &&
+		props.status.available &&
+		props.phase === 'idle',
 )
 
 const actionButton = computed<ActionButton | null>(() => {
@@ -113,10 +317,17 @@ const actionButton = computed<ActionButton | null>(() => {
 			icon: 'i-lucide-loader-circle',
 			primary: false,
 			disabled: true,
+			action: null,
 		}
 	}
 	if (props.phase === 'failed') {
-		return { label: 'Try again', icon: 'i-lucide-rotate-cw', primary: true, disabled: false }
+		return {
+			label: 'Try again',
+			icon: 'i-lucide-rotate-cw',
+			primary: true,
+			disabled: false,
+			action: 'check',
+		}
 	}
 	if (props.phase === 'limited') {
 		return props.retryActive
@@ -125,8 +336,18 @@ const actionButton = computed<ActionButton | null>(() => {
 					icon: 'i-lucide-clock',
 					primary: false,
 					disabled: true,
+					action: null,
 				}
-			: { label: 'Try again', icon: 'i-lucide-rotate-cw', primary: false, disabled: false }
+			: {
+					label: 'Try again',
+					icon: 'i-lucide-rotate-cw',
+					primary: false,
+					disabled: false,
+					action: 'check',
+				}
+	}
+	if (applyView.value) {
+		return applyButton(applyView.value)
 	}
 	if (props.status.available) {
 		return null
@@ -136,12 +357,28 @@ const actionButton = computed<ActionButton | null>(() => {
 		icon: 'i-lucide-refresh-cw',
 		primary: false,
 		disabled: false,
+		action: 'check',
 	}
 })
 
+function onAction() {
+	const action = actionButton.value?.action
+	if (action === 'check') {
+		emit('check')
+	}
+	if (action === 'update') {
+		emit('update')
+	}
+}
+
+const showNotes = computed(
+	() =>
+		showServerGuidance.value || applyView.value === 'available' || applyView.value === 'ready',
+)
+
 const notes = computed(() => {
 	const items = props.status.notes?.items ?? []
-	if (!showServerGuidance.value || items.length === 0 || !props.status.notes) {
+	if (!showNotes.value || items.length === 0 || !props.status.notes) {
 		return null
 	}
 	return {
@@ -159,6 +396,7 @@ const notes = computed(() => {
 	>
 		<h2
 			id="updates-h"
+			ref="heading"
 			tabindex="-1"
 			class="self-start text-lg font-semibold text-highlighted focus:outline-2 focus:outline-offset-4 focus:outline-primary"
 		>
@@ -171,7 +409,19 @@ const notes = computed(() => {
 			:title="block.title"
 			:text="block.text"
 			:meta="block.meta"
-		/>
+			:live="progressView ? 'off' : 'polite'"
+		>
+			<UpdateProgress
+				v-if="progressView"
+				:label="progressView.label"
+				:text="progressView.text"
+				:value="progressView.value"
+			/>
+		</UpdateStatusBlock>
+
+		<p v-if="canApplyView" role="status" data-testid="update-announcer" class="sr-only">
+			{{ announcement }}
+		</p>
 
 		<ReleaseNotes v-if="notes" :version="newVersion" :date="notes.date" :items="notes.items" />
 
@@ -190,12 +440,14 @@ const notes = computed(() => {
 						: 'border border-accented bg-default text-highlighted ring-0'
 				"
 				:ui="{ leadingIcon: 'size-4' }"
-				@click="emit('check')"
+				@click="onAction"
 			>
 				{{ actionButton.label }}
 			</UButton>
 		</div>
 
+		<span v-if="hint" class="text-xs/4.5 text-pretty text-muted">{{ hint }}</span>
+
 		<a
 			v-if="showServerGuidance && status.release_url"
 			:href="status.release_url"

web/src/composables/useUpdate.ts

@@ -15,6 +15,14 @@ export interface UpdateNotes {
 	items: string[]
 }
 
+export interface UpdateProgress {
+	percent: number
+	downloaded_bytes: number
+	total_bytes: number
+}
+
+export type UpdateErrorKind = 'download' | 'verification'
+
 export interface UpdateStatus {
 	current: string
 	latest: string
@@ -24,8 +32,8 @@ export interface UpdateStatus {
 	checked_at: string | null
 	can_apply: boolean
 	state: UpdateState
-	progress: unknown
-	error: string | null
+	progress: UpdateProgress | null
+	error: UpdateErrorKind | null
 	started_at: string | null
 }
 
@@ -40,5 +48,9 @@ export function useUpdate() {
 		return request<UpdateStatus>('/v1/system/update/check', { method: 'POST' })
 	}
 
-	return { getUpdateStatus, checkForUpdate }
+	function startUpdateDownload(): Promise<UpdateStatus> {
+		return request<UpdateStatus>('/v1/system/update/download', { method: 'POST' })
+	}
+
+	return { getUpdateStatus, checkForUpdate, startUpdateDownload }
 }

web/src/lib/__tests__/updateFormat.spec.ts

@@ -2,6 +2,8 @@ import { describe, expect, it } from 'vitest'
 import {
 	AUTO_CHECK_INTERVAL_MS,
 	displayVersion,
+	downloadAnnouncement,
+	formatDownloadProgress,
 	formatLastChecked,
 	formatReleased,
 	isCheckDue,
@@ -64,3 +66,29 @@ describe('formatReleased', () => {
 		expect(formatReleased('2026-09-24T08:00:00Z')).toBe('Released 24 Sep 2026')
 	})
 })
+
+describe('formatDownloadProgress', () => {
+	it('reads the board sample as 42% and 11 of 26 MB', () => {
+		expect(
+			formatDownloadProgress({
+				percent: 42,
+				downloaded_bytes: 11534336,
+				total_bytes: 27262976,
+			}),
+		).toBe('42% · 11 of 26 MB')
+	})
+})
+
+describe('downloadAnnouncement', () => {
+	it.each([
+		[0, 'Downloading version 2.3.0-beta'],
+		[24, 'Downloading version 2.3.0-beta'],
+		[25, 'Downloading version 2.3.0-beta, 25 percent'],
+		[49, 'Downloading version 2.3.0-beta, 25 percent'],
+		[50, 'Downloading version 2.3.0-beta, 50 percent'],
+		[75, 'Downloading version 2.3.0-beta, 75 percent'],
+		[100, 'Downloading version 2.3.0-beta, 75 percent'],
+	])('reads %i percent as %s', (percent, expected) => {
+		expect(downloadAnnouncement('2.3.0-beta', percent)).toBe(expected)
+	})
+})

web/src/lib/updateFormat.ts

@@ -44,3 +44,28 @@ export function isCheckDue(checkedAt: string | null, now: number = Date.now()) {
 export function formatReleased(iso: string) {
 	return `Released ${formatAbsoluteDateFromIso(iso)}`
 }
+
+const BYTES_PER_MB = 1024 * 1024
+const ANNOUNCEMENT_STEP_PERCENT = 25
+const LAST_ANNOUNCED_PERCENT = 75
+
+export function formatDownloadProgress(progress: {
+	percent: number
+	downloaded_bytes: number
+	total_bytes: number
+}) {
+	const done = Math.round(progress.downloaded_bytes / BYTES_PER_MB)
+	const total = Math.round(progress.total_bytes / BYTES_PER_MB)
+	return `${progress.percent}% · ${done} of ${total} MB`
+}
+
+export function downloadAnnouncement(version: string, percent: number) {
+	const step = Math.min(
+		Math.floor(percent / ANNOUNCEMENT_STEP_PERCENT) * ANNOUNCEMENT_STEP_PERCENT,
+		LAST_ANNOUNCED_PERCENT,
+	)
+	const base = `Downloading version ${version}`
+	return step > 0 ? `${base}, ${step} percent` : base
+}
+
+export const VERIFYING_ANNOUNCEMENT = 'Checking the download'

web/src/stores/__tests__/update.spec.ts

@@ -3,7 +3,16 @@ import { createPinia, setActivePinia } from 'pinia'
 import { ApiError, NetworkError, useApi } from '@/composables/useApi'
 import { useSessionStore } from '@/stores/session'
 import { DISMISSED_VERSION_KEY, useUpdateStore } from '@/stores/update'
-import { CHECK_PATH, STATUS_PATH, newerAvailable, upToDate } from '@/views/__tests__/updateTestKit'
+import {
+	CHECK_PATH,
+	DOWNLOAD_PATH,
+	STATUS_PATH,
+	downloading,
+	newerAvailable,
+	ready,
+	startable,
+	upToDate,
+} from '@/views/__tests__/updateTestKit'
 
 vi.mock('@/composables/useApi', async (importOriginal) => {
 	const actual = await importOriginal<typeof import('@/composables/useApi')>()
@@ -136,3 +145,130 @@ describe('banner dismissal', () => {
 		expect(store.bannerVisible).toBe(false)
 	})
 })
+
+describe('startDownload', () => {
+	it('stores the 202 body and returns to idle', async () => {
+		const store = setup('owner', { [DOWNLOAD_PATH]: () => Promise.resolve(downloading()) })
+
+		const result = await store.startDownload()
+
+		expect(result).toBe('started')
+		expect(store.applyPhase).toBe('idle')
+		expect(store.status?.state).toBe('downloading')
+		expect(store.jobRunning).toBe(true)
+		expect(requestMock).toHaveBeenCalledWith(DOWNLOAD_PATH, { method: 'POST' })
+	})
+
+	it('answers busy and sends nothing while a start is in flight', async () => {
+		const store = setup('owner', { [DOWNLOAD_PATH]: () => new Promise(() => undefined) })
+		store.startDownload()
+
+		expect(await store.startDownload()).toBe('busy')
+		expect(store.applyPhase).toBe('starting')
+		expect(requestMock).toHaveBeenCalledTimes(1)
+	})
+
+	it.each([
+		{ name: '400', error: new ApiError(400), result: 'nothing', phase: 'idle', retry: 0 },
+		{ name: '403', error: new ApiError(403), result: 'forbidden', phase: 'idle', retry: 0 },
+		{ name: '409', error: new ApiError(409), result: 'conflict', phase: 'idle', retry: 0 },
+		{
+			name: '422',
+			error: new ApiError(422),
+			result: 'untrusted',
+			phase: 'untrusted',
+			retry: 0,
+		},
+		{
+			name: '429 with Retry-After',
+			error: new ApiError(429, 42),
+			result: 'limited',
+			phase: 'limited',
+			retry: 42,
+		},
+		{
+			name: '429 without Retry-After',
+			error: new ApiError(429),
+			result: 'limited',
+			phase: 'limited',
+			retry: 60,
+		},
+		{ name: '500', error: new ApiError(500), result: 'failed', phase: 'failed', retry: 0 },
+		{
+			name: 'a network failure',
+			error: new NetworkError(),
+			result: 'failed',
+			phase: 'failed',
+			retry: 0,
+		},
+	])('maps $name', async ({ error, result, phase, retry }) => {
+		const store = setup('owner', { [DOWNLOAD_PATH]: () => Promise.reject(error) })
+
+		expect(await store.startDownload()).toBe(result)
+		expect(store.applyPhase).toBe(phase)
+		expect(store.retryAfter).toBe(retry)
+	})
+
+	it('forgets a failed start when the status is loaded again', async () => {
+		const store = setup('owner', {
+			[DOWNLOAD_PATH]: () => Promise.reject(new ApiError(500)),
+			[STATUS_PATH]: () => Promise.resolve(startable()),
+		})
+		await store.startDownload()
+
+		await store.load()
+
+		expect(store.applyPhase).toBe('idle')
+	})
+})
+
+describe('poll', () => {
+	it('replaces the status and keeps it when a poll fails', async () => {
+		const store = setup('owner', { [STATUS_PATH]: () => Promise.resolve(downloading(60)) })
+		await store.poll()
+		expect(store.status?.progress?.percent).toBe(60)
+
+		requestMock.mockImplementation(() => Promise.reject(new ApiError(500)))
+		await store.poll()
+
+		expect(store.status?.progress?.percent).toBe(60)
+		expect(store.loadState).toBe('idle')
+	})
+
+	it('skips a poll while another is in flight', async () => {
+		const store = setup('owner', { [STATUS_PATH]: () => new Promise(() => undefined) })
+		store.poll()
+
+		await store.poll()
+
+		expect(requestMock).toHaveBeenCalledTimes(1)
+	})
+})
+
+describe('job state', () => {
+	it.each([
+		{ name: 'downloading', status: downloading(), running: true, readyToInstall: false },
+		{ name: 'ready', status: ready(), running: false, readyToInstall: true },
+		{ name: 'idle', status: startable(), running: false, readyToInstall: false },
+		{
+			name: 'downloading without the helper',
+			status: { ...downloading(), can_apply: false },
+			running: false,
+			readyToInstall: false,
+		},
+	])('reads $name', async ({ status, running, readyToInstall }) => {
+		const store = setup('owner', { [STATUS_PATH]: () => Promise.resolve(status) })
+		await store.load()
+
+		expect(store.jobRunning).toBe(running)
+		expect(store.readyToInstall).toBe(readyToInstall)
+	})
+
+	it('shows no ready state to an admin', async () => {
+		const store = setup('admin', { [STATUS_PATH]: () => Promise.resolve(ready()) })
+		await store.load()
+
+		expect(store.readyToInstall).toBe(false)
+		expect(store.jobRunning).toBe(false)
+	})
+})

web/src/stores/update.ts

@@ -7,6 +7,16 @@ import { useSessionStore } from '@/stores/session'
 export type UpdateLoadState = 'idle' | 'loading' | 'ready' | 'error'
 export type UpdateCheckPhase = 'idle' | 'checking' | 'failed' | 'limited'
 export type UpdateCheckResult = 'updated' | 'failed' | 'limited' | 'forbidden' | 'busy'
+export type UpdateApplyPhase = 'idle' | 'starting' | 'failed' | 'untrusted' | 'limited'
+export type UpdateStartResult =
+	| 'started'
+	| 'failed'
+	| 'untrusted'
+	| 'limited'
+	| 'forbidden'
+	| 'nothing'
+	| 'conflict'
+	| 'busy'
 
 export const DISMISSED_VERSION_KEY = 'renewcms:update-dismissed'
 const DEFAULT_RETRY_SECONDS = 60
@@ -32,6 +42,7 @@ export const useUpdateStore = defineStore('update', () => {
 	const status = ref<UpdateStatus | null>(null)
 	const loadState = ref<UpdateLoadState>('idle')
 	const phase = ref<UpdateCheckPhase>('idle')
+	const applyPhase = ref<UpdateApplyPhase>('idle')
 	const retryAfter = ref(0)
 	const dismissedVersion = ref<string | null>(readDismissedVersion())
 	let pendingLoad: Promise<void> | null = null
@@ -42,6 +53,13 @@ export const useUpdateStore = defineStore('update', () => {
 	const bannerVisible = computed(
 		() => showCue.value && status.value?.latest !== dismissedVersion.value,
 	)
+	const jobRunning = computed(
+		() =>
+			isOwner.value &&
+			status.value?.can_apply === true &&
+			(status.value.state === 'downloading' || status.value.state === 'verifying'),
+	)
+	const readyToInstall = computed(() => isOwner.value && status.value?.state === 'ready')
 
 	function load() {
 		if (pendingLoad) {
@@ -49,6 +67,9 @@ export const useUpdateStore = defineStore('update', () => {
 		}
 		const { getUpdateStatus } = useUpdate()
 		loadState.value = 'loading'
+		if (applyPhase.value !== 'starting') {
+			applyPhase.value = 'idle'
+		}
 		pendingLoad = Promise.resolve()
 			.then(getUpdateStatus)
 			.then((result) => {
@@ -64,6 +85,60 @@ export const useUpdateStore = defineStore('update', () => {
 		return pendingLoad
 	}
 
+	let pendingPoll = false
+
+	async function poll() {
+		if (pendingPoll) {
+			return
+		}
+		const { getUpdateStatus } = useUpdate()
+		pendingPoll = true
+		try {
+			status.value = await getUpdateStatus()
+		} catch {
+			return
+		} finally {
+			pendingPoll = false
+		}
+	}
+
+	async function startDownload(): Promise<UpdateStartResult> {
+		if (applyPhase.value === 'starting') {
+			return 'busy'
+		}
+		const { startUpdateDownload } = useUpdate()
+		applyPhase.value = 'starting'
+		try {
+			status.value = await startUpdateDownload()
+			loadState.value = 'ready'
+			applyPhase.value = 'idle'
+			return 'started'
+		} catch (error) {
+			return settleStartFailure(error)
+		}
+	}
+
+	function settleStartFailure(error: unknown): UpdateStartResult {
+		const outcomes: Record<number, UpdateStartResult> = {
+			400: 'nothing',
+			403: 'forbidden',
+			409: 'conflict',
+			422: 'untrusted',
+			429: 'limited',
+		}
+		const outcome = error instanceof ApiError ? outcomes[error.status] : undefined
+		if (outcome === 'limited' && error instanceof ApiError) {
+			retryAfter.value = error.retryAfter ?? DEFAULT_RETRY_SECONDS
+		}
+		const phases: Partial<Record<UpdateStartResult, UpdateApplyPhase>> = {
+			limited: 'limited',
+			untrusted: 'untrusted',
+		}
+		const result = outcome ?? 'failed'
+		applyPhase.value = phases[result] ?? (result === 'failed' ? 'failed' : 'idle')
+		return result
+	}
+
 	async function check(): Promise<UpdateCheckResult> {
 		if (phase.value === 'checking') {
 			return 'busy'
@@ -101,12 +176,17 @@ export const useUpdateStore = defineStore('update', () => {
 		status,
 		loadState,
 		phase,
+		applyPhase,
 		retryAfter,
 		isOwner,
 		available,
 		showCue,
 		bannerVisible,
+		jobRunning,
+		readyToInstall,
 		load,
+		poll,
+		startDownload,
 		check,
 		dismissBanner,
 	}

web/src/views/HomeView.vue

@@ -115,6 +115,23 @@ function onArticleCreated(article: Article) {
 	})
 }
 
+const readyBannerDismissed = ref(false)
+
+const bannerState = computed(() => {
+	if (update.readyToInstall) {
+		return readyBannerDismissed.value ? null : 'ready'
+	}
+	return update.bannerVisible ? 'available' : null
+})
+
+function dismissBanner() {
+	if (bannerState.value === 'ready') {
+		readyBannerDismissed.value = true
+		return
+	}
+	update.dismissBanner()
+}
+
 watch(
 	() => update.isOwner,
 	(isOwner) => {
@@ -160,11 +177,11 @@ onMounted(loadArticles)
 			</div>
 
 			<UpdateBanner
-				v-if="update.bannerVisible && update.status"
-				state="available"
+				v-if="bannerState && update.status"
+				:state="bannerState"
 				:version="displayVersion(update.status.latest)"
 				@go-to-settings="router.push('/settings')"
-				@dismiss="update.dismissBanner"
+				@dismiss="dismissBanner"
 			/>
 
 			<template v-if="(loadState === 'loading' && showSkeleton) || loadState === 'default'">

web/src/views/SettingsView.vue

@@ -12,6 +12,7 @@ import { useSessionStore } from '@/stores/session'
 import { useUpdateStore } from '@/stores/update'
 
 const SKELETON_DELAY_MS = 150
+const POLL_INTERVAL_MS = 1000
 const UNREACHABLE_COPY = "Couldn't reach RenewCMS. Check your connection and try again."
 
 type LoadState = 'loading' | 'ready' | 'error'
@@ -85,19 +86,60 @@ const updatesStatus = computed(() => {
 
 const updatesPhase = computed(() => (update.status ? update.phase : 'failed'))
 
-async function onCheck() {
-	const result = await update.check()
-	if (result !== 'forbidden') {
-		return
-	}
+async function reloadAfterRoleChange() {
+	await session.refresh()
+	await update.load()
+}
+
+function notifyOnlyOwner() {
 	toast.add({
 		color: 'error',
 		icon: 'i-lucide-circle-x',
 		title: 'Only the owner can do this',
 		description: 'Ask the owner of this site to update RenewCMS.',
 	})
-	await session.refresh()
-	await update.load()
+}
+
+async function onUpdate() {
+	const result = await update.startDownload()
+	if (result === 'limited') {
+		return
+	}
+	if (result === 'forbidden') {
+		notifyOnlyOwner()
+		await reloadAfterRoleChange()
+		return
+	}
+	if (result === 'nothing') {
+		toast.add({
+			color: 'info',
+			icon: 'i-lucide-info',
+			title: 'Nothing to update',
+			description: 'You already have the latest version.',
+		})
+		await update.load()
+		return
+	}
+	if (result === 'conflict') {
+		await update.load()
+		if (update.jobRunning) {
+			toast.add({
+				color: 'info',
+				icon: 'i-lucide-info',
+				title: 'An update is already running',
+				description: 'Another owner started it. Progress shows here.',
+			})
+		}
+	}
+}
+
+async function onCheck() {
+	const result = await update.check()
+	if (result !== 'forbidden') {
+		return
+	}
+	notifyOnlyOwner()
+	await reloadAfterRoleChange()
 }
 
 const updateRequested = ref(false)
@@ -115,7 +157,8 @@ watch(
 			return
 		}
 		autoCheckHandled = true
-		if (update.isOwner && isCheckDue(update.status?.checked_at ?? null)) {
+		const jobActive = update.jobRunning || update.readyToInstall
+		if (update.isOwner && !jobActive && isCheckDue(update.status?.checked_at ?? null)) {
 			onCheck()
 		}
 	},
@@ -123,20 +166,44 @@ watch(
 )
 
 watch(
-	() => update.phase,
-	(phase) => {
-		if (phase === 'limited') {
+	() => [update.phase, update.applyPhase] as const,
+	([phase, applyPhase]) => {
+		if (phase === 'limited' || applyPhase === 'limited') {
 			retry.start(update.retryAfter)
 		}
 	},
 )
 
+let pollTimer: ReturnType<typeof setInterval> | null = null
+
+function stopPolling() {
+	if (pollTimer !== null) {
+		clearInterval(pollTimer)
+		pollTimer = null
+	}
+}
+
+function startPolling() {
+	if (pollTimer === null) {
+		pollTimer = setInterval(update.poll, POLL_INTERVAL_MS)
+	}
+}
+
+watch(
+	() => update.jobRunning,
+	(running) => (running ? startPolling() : stopPolling()),
+	{ immediate: true },
+)
+
 onMounted(async () => {
 	loadSettings()
 	await update.load()
 	updateRequested.value = true
 })
-onBeforeUnmount(clearSkeletonTimer)
+onBeforeUnmount(() => {
+	clearSkeletonTimer()
+	stopPolling()
+})
 </script>
 
 <template>
@@ -198,9 +265,11 @@ onBeforeUnmount(clearSkeletonTimer)
 				:status="updatesStatus"
 				:role="session.session?.role"
 				:phase="updatesPhase"
+				:apply-phase="update.applyPhase"
 				:retry-label="retry.formatted.value"
 				:retry-active="retry.active.value"
 				@check="onCheck"
+				@update="onUpdate"
 			/>
 		</div>
 	</DashboardShell>

web/src/views/__tests__/HomeUpdateReady.spec.ts

@@ -0,0 +1,168 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { mount, flushPromises, type VueWrapper } from '@vue/test-utils'
+import { createPinia, setActivePinia } from 'pinia'
+import uiPlugin from '@nuxt/ui/vue-plugin'
+import router from '@/router'
+import type { UserRole } from '@/composables/useApi'
+import type { UpdateStatus } from '@/composables/useUpdate'
+import { DISMISSED_VERSION_KEY, useUpdateStore } from '@/stores/update'
+import { useSessionStore } from '@/stores/session'
+import HomeView from '../HomeView.vue'
+import { NEW_TAG, downloading, newerAvailable, ready, startable, verifying } from './updateTestKit'
+
+function mockResponse(status: number, body: unknown = null) {
+	return {
+		ok: status >= 200 && status < 300,
+		status,
+		headers: { get: () => null },
+		json: async () => body,
+	} as unknown as Response
+}
+
+let wrapper: VueWrapper | null = null
+
+async function mountHome(role: UserRole, status: UpdateStatus) {
+	setActivePinia(createPinia())
+	const session = useSessionStore()
+	session.session = { verified: true, username: 'marta', role }
+	session.status = 'ready'
+	global.fetch = vi.fn((url: string) => {
+		if (url === '/v1/article/') {
+			return Promise.resolve(mockResponse(200, []))
+		}
+		if (url === '/v1/system/update') {
+			return Promise.resolve(mockResponse(200, status))
+		}
+		throw new Error(`Unexpected fetch call: ${url}`)
+	}) as unknown as typeof fetch
+	await router.push('/home')
+	wrapper = mount(HomeView, {
+		attachTo: document.body,
+		global: { plugins: [router, uiPlugin] },
+	})
+	await flushPromises()
+	return wrapper
+}
+
+function banner() {
+	return document.body.querySelector('[aria-label="Update available"][role="region"]')
+}
+
+function settingsNavItem() {
+	return document.body.querySelector('nav[aria-label="Main"] a[href="/settings"]')!
+}
+
+function mobileDot() {
+	return document.body.querySelector('[role="img"][aria-label="Update available"]')
+}
+
+function buttonByLabel(label: string) {
+	return Array.from(document.body.querySelectorAll('button')).find(
+		(button) =>
+			button.textContent?.trim() === label || button.getAttribute('aria-label') === label,
+	)
+}
+
+async function remount(role: UserRole, status: UpdateStatus) {
+	wrapper?.unmount()
+	document.body.innerHTML = ''
+	await mountHome(role, status)
+}
+
+beforeEach(() => {
+	localStorage.clear()
+})
+
+afterEach(async () => {
+	wrapper?.unmount()
+	wrapper = null
+	await router.push('/login')
+	document.body.innerHTML = ''
+})
+
+describe('Home banner, ready to install (owner)', () => {
+	it('shows the info region with the ready copy, Go to Settings and Dismiss', async () => {
+		await mountHome('owner', ready())
+
+		const region = banner()!
+		expect(region).not.toBeNull()
+		expect(region.textContent).toContain('Version 2.3.0-beta is ready to install')
+		expect(region.textContent).toContain(
+			'Restart from Settings to finish. The site is unavailable for about 10 seconds.',
+		)
+		expect(region.textContent).not.toContain('is available')
+		expect(region.textContent).toContain('Go to Settings')
+		expect(region.querySelector('button[aria-label="Dismiss"]')).not.toBeNull()
+		expect(region.querySelector('svg')).not.toBeNull()
+	})
+
+	it('goes to /settings from Go to Settings', async () => {
+		await mountHome('owner', ready())
+
+		buttonByLabel('Go to Settings')!.click()
+
+		await vi.waitFor(() => expect(router.currentRoute.value.path).toBe('/settings'))
+	})
+
+	it('shows although the available banner for this version was dismissed earlier', async () => {
+		localStorage.setItem(DISMISSED_VERSION_KEY, NEW_TAG)
+
+		await mountHome('owner', ready())
+
+		expect(banner()!.textContent).toContain('is ready to install')
+	})
+
+	it('hides on dismiss for this visit only and writes nothing to localStorage', async () => {
+		const setItem = vi.spyOn(Storage.prototype, 'setItem')
+		await mountHome('owner', ready())
+
+		const writesBefore = setItem.mock.calls.length
+		buttonByLabel('Dismiss')!.click()
+		await flushPromises()
+
+		expect(banner()).toBeNull()
+		expect(setItem.mock.calls).toHaveLength(writesBefore)
+		expect(localStorage.getItem(DISMISSED_VERSION_KEY)).toBeNull()
+
+		await remount('owner', ready())
+		expect(banner()!.textContent).toContain('is ready to install')
+		setItem.mockRestore()
+	})
+
+	it('is not shown to an admin', async () => {
+		await mountHome('admin', ready())
+
+		expect(banner()).toBeNull()
+	})
+
+	it.each([
+		{ name: 'downloading', status: downloading() },
+		{ name: 'verifying', status: verifying() },
+	])('keeps the available banner while $name', async ({ status }) => {
+		await mountHome('owner', status)
+
+		expect(banner()!.textContent).toContain('Version 2.3.0-beta is available')
+	})
+})
+
+describe('Sidebar pill and mobile dot during a job', () => {
+	it.each([
+		{ name: 'downloading', status: downloading() },
+		{ name: 'verifying', status: verifying() },
+		{ name: 'ready', status: ready() },
+		{ name: 'available with the helper', status: startable() },
+	])('stay for the owner while $name', async ({ status }) => {
+		await mountHome('owner', status)
+
+		expect(settingsNavItem().textContent).toContain('Update')
+		expect(mobileDot()).not.toBeNull()
+	})
+
+	it('are absent for an admin while ready', async () => {
+		await mountHome('admin', { ...newerAvailable(), state: 'ready' })
+
+		expect(settingsNavItem().textContent).not.toContain('Update')
+		expect(mobileDot()).toBeNull()
+		expect(useUpdateStore().status).toBeNull()
+	})
+})

web/src/views/__tests__/SettingsUpdateDownload.spec.ts

@@ -0,0 +1,614 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { mount, flushPromises, type VueWrapper } from '@vue/test-utils'
+import { createPinia, setActivePinia } from 'pinia'
+import uiPlugin from '@nuxt/ui/vue-plugin'
+import router from '@/router'
+import { ApiError, NetworkError, useApi, type UserRole } from '@/composables/useApi'
+import type { UpdateStatus } from '@/composables/useUpdate'
+import { useSessionStore } from '@/stores/session'
+import SettingsView from '../SettingsView.vue'
+import {
+	CHECK_PATH,
+	DOWNLOAD_PATH,
+	NOTE_ITEMS,
+	RUNNING_VERSION,
+	STATUS_PATH,
+	downloading,
+	failedWith,
+	findButton,
+	newerAvailable,
+	ready,
+	startable,
+	verifying,
+	visibleButtonLabels,
+} from './updateTestKit'
+
+vi.mock('@/composables/useApi', async (importOriginal) => {
+	const actual = await importOriginal<typeof import('@/composables/useApi')>()
+	return {
+		...actual,
+		useApi: vi.fn(),
+	}
+})
+
+let toastAdd: ReturnType<typeof vi.fn>
+
+vi.mock('@nuxt/ui/composables', async (importOriginal) => {
+	const actual = await importOriginal<typeof import('@nuxt/ui/composables')>()
+	return {
+		...actual,
+		useToast: () => ({ add: toastAdd }),
+	}
+})
+
+type Outcome = UpdateStatus | Error
+type Handler = () => Promise<unknown>
+
+let requestMock: ReturnType<typeof vi.fn>
+let getMeMock: ReturnType<typeof vi.fn>
+let wrapper: VueWrapper | null = null
+
+function sequence(...outcomes: Outcome[]): Handler {
+	let index = 0
+	return () => {
+		const outcome = outcomes[Math.min(index, outcomes.length - 1)]!
+		index++
+		return outcome instanceof Error ? Promise.reject(outcome) : Promise.resolve(outcome)
+	}
+}
+
+interface MountOptions {
+	role: UserRole
+	status: Handler | UpdateStatus
+	download?: Handler | UpdateStatus | Error
+	meAfterRefresh?: UserRole
+}
+
+function asHandler(value: Handler | Outcome): Handler {
+	if (typeof value === 'function') {
+		return value
+	}
+	return sequence(value)
+}
+
+async function mountSettings(options: MountOptions) {
+	setActivePinia(createPinia())
+	toastAdd = vi.fn()
+	const session = useSessionStore()
+	session.session = { verified: true, username: 'marta', id: 1, role: options.role }
+	session.status = 'ready'
+	const statusHandler = asHandler(options.status)
+	const downloadHandler = asHandler(options.download ?? new ApiError(500))
+	requestMock = vi.fn((path: string) => {
+		if (path === '/v1/settings/') {
+			return Promise.resolve({ version: RUNNING_VERSION })
+		}
+		if (path === STATUS_PATH) {
+			return statusHandler()
+		}
+		if (path === DOWNLOAD_PATH) {
+			return downloadHandler()
+		}
+		throw new Error(`Unexpected request: ${path}`)
+	})
+	getMeMock = vi.fn().mockResolvedValue({
+		verified: true,
+		username: 'marta',
+		id: 1,
+		displayName: '',
+		role: options.meAfterRefresh ?? options.role,
+	})
+	vi.mocked(useApi).mockReturnValue({ getMe: getMeMock, request: requestMock })
+	await router.push('/settings')
+	wrapper = mount(SettingsView, {
+		attachTo: document.body,
+		global: { plugins: [router, uiPlugin] },
+	})
+	await flushPromises()
+	return wrapper
+}
+
+function useTimers() {
+	vi.useFakeTimers({
+		toFake: ['setTimeout', 'clearTimeout', 'setInterval', 'clearInterval'],
+	})
+}
+
+function updatesCard() {
+	return document.body.querySelector('[data-testid="updates-card"]')!
+}
+
+function cardText() {
+	return updatesCard().textContent ?? ''
+}
+
+function cardButtons() {
+	return visibleButtonLabels(updatesCard())
+}
+
+function callsTo(path: string) {
+	return requestMock.mock.calls.filter(([called]) => called === path)
+}
+
+function progressbar() {
+	return updatesCard().querySelector('[role="progressbar"]')
+}
+
+function announcer() {
+	return updatesCard().querySelector('[data-testid="update-announcer"]')!
+}
+
+async function pressUpdate() {
+	findButton('Update')!.click()
+	await flushPromises()
+}
+
+async function tick(milliseconds: number) {
+	await vi.advanceTimersByTimeAsync(milliseconds)
+}
+
+afterEach(async () => {
+	wrapper?.unmount()
+	wrapper = null
+	vi.useRealTimers()
+	await router.push('/login')
+	document.body.innerHTML = ''
+})
+
+describe('Settings, owner, Update available with the helper detected', () => {
+	it('shows the info block, collapsed notes, the one Update button and the hint', async () => {
+		await mountSettings({ role: 'owner', status: startable() })
+
+		expect(cardText()).toContain('Version 2.3.0-beta is available')
+		expect(cardText()).toContain(
+			'You have v2.2.0-beta. Update downloads the new version and checks it. Nothing changes until you restart.',
+		)
+		expect(cardText()).toMatch(/Last checked (today|yesterday) at \d\d:\d\d/)
+		expect(findButton("What's new in 2.3.0-beta")!.getAttribute('aria-expanded')).toBe('false')
+		expect(cardButtons()).toEqual(["What's new in 2.3.0-beta", 'Update'])
+		expect(cardText()).toContain('Takes about 2 minutes. Your site stays online.')
+		expect(updatesCard().querySelector('code')).toBeNull()
+		expect(cardText()).not.toContain('How to update')
+		expect(cardText()).not.toContain('For whoever manages the server')
+		expect(callsTo(DOWNLOAD_PATH)).toHaveLength(0)
+		expect(callsTo(CHECK_PATH)).toHaveLength(0)
+	})
+
+	it('opens the notes with the release date and the plain-text list', async () => {
+		await mountSettings({ role: 'owner', status: startable() })
+
+		const toggle = findButton("What's new in 2.3.0-beta")!
+		toggle.click()
+		await flushPromises()
+
+		expect(toggle.getAttribute('aria-expanded')).toBe('true')
+		expect(cardText()).toContain('Released 24 Sep 2026')
+		for (const item of NOTE_ITEMS) {
+			expect(cardText()).toContain(item)
+		}
+	})
+})
+
+describe('Settings, owner, Downloading', () => {
+	it('shows the card copy, the progressbar, the text and a disabled Updating button', async () => {
+		useTimers()
+		await mountSettings({ role: 'owner', status: startable(), download: downloading() })
+
+		await pressUpdate()
+
+		expect(callsTo(DOWNLOAD_PATH)).toHaveLength(1)
+		expect(requestMock).toHaveBeenCalledWith(DOWNLOAD_PATH, { method: 'POST' })
+		expect(cardText()).toContain('Downloading version 2.3.0-beta…')
+		expect(cardText()).toContain(
+			'You can leave this page. The download continues and your site stays online.',
+		)
+		const bar = progressbar()!
+		expect(bar.getAttribute('aria-label')).toBe('Downloading version 2.3.0-beta')
+		expect(bar.getAttribute('aria-valuenow')).toBe('42')
+		expect(cardText()).toContain('42% · 11 of 26 MB')
+		const updating = findButton('Updating…') as HTMLButtonElement
+		expect(updating.disabled).toBe(true)
+		expect(cardButtons()).toEqual(['Updating…'])
+	})
+
+	it('reads the status once a second while the job runs', async () => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), downloading(42)),
+			download: downloading(),
+		})
+		await pressUpdate()
+		const before = callsTo(STATUS_PATH).length
+
+		await tick(1000)
+		await tick(1000)
+		await tick(1000)
+
+		expect(callsTo(STATUS_PATH)).toHaveLength(before + 3)
+	})
+})
+
+describe('Settings, progress is announced at 25 percent steps only', () => {
+	it('changes the announcer at 25, 50 and 75 while the bar updates on every poll', async () => {
+		useTimers()
+		const percents = [3, 24, 25, 26, 49, 50, 75, 100]
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), ...percents.map((percent) => downloading(percent))),
+			download: downloading(0),
+		})
+		await pressUpdate()
+
+		const announced: string[] = []
+		const valueNow: string[] = []
+		for (let index = 0; index < percents.length; index++) {
+			await tick(1000)
+			announced.push(announcer().textContent!.trim())
+			valueNow.push(progressbar()!.getAttribute('aria-valuenow')!)
+		}
+
+		expect(announced).toEqual([
+			'Downloading version 2.3.0-beta',
+			'Downloading version 2.3.0-beta',
+			'Downloading version 2.3.0-beta, 25 percent',
+			'Downloading version 2.3.0-beta, 25 percent',
+			'Downloading version 2.3.0-beta, 25 percent',
+			'Downloading version 2.3.0-beta, 50 percent',
+			'Downloading version 2.3.0-beta, 75 percent',
+			'Downloading version 2.3.0-beta, 75 percent',
+		])
+		expect(valueNow).toEqual(percents.map(String))
+		expect(announcer().getAttribute('role')).toBe('status')
+		expect(updatesCard().querySelector('[aria-live="polite"]')).toBeNull()
+	})
+})
+
+describe('Settings, owner, Verifying', () => {
+	it('shows an indeterminate bar, Almost there and announces the step once', async () => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), verifying()),
+			download: downloading(100),
+		})
+		await pressUpdate()
+
+		await tick(1000)
+
+		expect(cardText()).toContain('Checking the download…')
+		expect(cardText()).toContain(
+			'Making sure the file is complete and safe to install. This takes a few seconds.',
+		)
+		const bar = progressbar()!
+		expect(bar.hasAttribute('aria-valuenow')).toBe(false)
+		expect(bar.getAttribute('aria-label')).toBe('Checking the download')
+		expect(cardText()).toContain('Almost there')
+		expect((findButton('Updating…') as HTMLButtonElement).disabled).toBe(true)
+		expect(announcer().textContent!.trim()).toBe('Checking the download')
+	})
+})
+
+describe('Settings, owner, Ready to install', () => {
+	it('shows the success block, a disabled Restart, the notes and the hint, and stops polling', async () => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), ready()),
+			download: downloading(100),
+		})
+		await pressUpdate()
+		await tick(1000)
+
+		expect(cardText()).toContain('Version 2.3.0-beta is ready to install')
+		expect(cardText()).toContain(
+			'The download is checked. Restart to install it. Your site will be unavailable for about 10 seconds.',
+		)
+		expect(cardText()).toContain('Nothing has changed yet.')
+		expect(cardText()).toContain(
+			'Not now? Leave this page. The update waits here, and the banner on Home reminds you.',
+		)
+		expect(findButton("What's new in 2.3.0-beta")!.getAttribute('aria-expanded')).toBe('false')
+		const restart = findButton('Restart') as HTMLButtonElement
+		expect(restart.disabled).toBe(true)
+
+		const readsBefore = callsTo(STATUS_PATH).length
+		restart.click()
+		await flushPromises()
+		await tick(3000)
+
+		expect(callsTo(STATUS_PATH)).toHaveLength(readsBefore)
+		expect(requestMock.mock.calls.map(([path]) => path)).not.toContain(
+			'/v1/system/update/restart',
+		)
+		expect(document.body.querySelector('[role="dialog"]')).toBeNull()
+	})
+})
+
+describe('Settings, Download failed', () => {
+	function activeId() {
+		return document.activeElement?.id
+	}
+
+	it.each([
+		{
+			name: 'a failed record on a poll',
+			status: sequence(startable(), failedWith('download')),
+			download: downloading(),
+		},
+		{ name: 'a 500', status: startable(), download: new ApiError(500) },
+		{ name: 'a network error', status: startable(), download: new NetworkError() },
+	])('shows the error card and focuses the heading after $name', async (scenario) => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: scenario.status,
+			download: scenario.download,
+		})
+		await pressUpdate()
+		await tick(1000)
+		await flushPromises()
+
+		expect(cardText()).toContain("The download didn't finish")
+		expect(cardText()).toContain(
+			'The connection dropped before the file was complete. Nothing was changed and your site is running as before.',
+		)
+		expect(cardButtons()).toEqual(['Try again'])
+		expect(activeId()).toBe('updates-h')
+	})
+
+	it('posts the download again from Try again', async () => {
+		await mountSettings({
+			role: 'owner',
+			status: startable(),
+			download: sequence(new ApiError(500), downloading()),
+		})
+		await pressUpdate()
+
+		findButton('Try again')!.click()
+		await flushPromises()
+
+		expect(callsTo(DOWNLOAD_PATH)).toHaveLength(2)
+		expect(callsTo(CHECK_PATH)).toHaveLength(0)
+		expect(cardText()).toContain('Downloading version 2.3.0-beta…')
+	})
+})
+
+describe('Settings, Verification failed', () => {
+	function assertUntrustedCard() {
+		expect(cardText()).toContain("We didn't use this update")
+		expect(cardText()).toContain(
+			"The file didn't pass our safety check, so it was not installed. Nothing was changed. Try downloading it again. If this keeps happening, contact RenewCMS support.",
+		)
+		expect(cardButtons()).toEqual(['Try again'])
+		expect(document.activeElement?.id).not.toBe('updates-h')
+		expect(cardText()).not.toMatch(/signature|checksum|sha/i)
+	}
+
+	it('shows the warning card from a failed record', async () => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), failedWith('verification')),
+			download: downloading(),
+		})
+		await pressUpdate()
+		await tick(1000)
+
+		assertUntrustedCard()
+	})
+
+	it('shows the warning card after a 422', async () => {
+		await mountSettings({ role: 'owner', status: startable(), download: new ApiError(422) })
+
+		await pressUpdate()
+
+		assertUntrustedCard()
+	})
+})
+
+describe('Settings, 409 already running', () => {
+	it('toasts and shows the other run while it downloads', async () => {
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), downloading(42)),
+			download: new ApiError(409),
+		})
+
+		await pressUpdate()
+
+		expect(toastAdd).toHaveBeenCalledWith(
+			expect.objectContaining({
+				color: 'info',
+				title: 'An update is already running',
+				description: 'Another owner started it. Progress shows here.',
+			}),
+		)
+		expect(cardText()).toContain('Downloading version 2.3.0-beta…')
+		expect(progressbar()!.getAttribute('aria-valuenow')).toBe('42')
+	})
+
+	it('shows Ready to install without a toast when the reload answers ready', async () => {
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), ready()),
+			download: new ApiError(409),
+		})
+
+		await pressUpdate()
+
+		expect(toastAdd).not.toHaveBeenCalled()
+		expect(cardText()).toContain('Version 2.3.0-beta is ready to install')
+	})
+
+	it('shows the Not prepared card without a toast when the reload answers can_apply false', async () => {
+		await mountSettings({
+			role: 'owner',
+			status: sequence(startable(), newerAvailable()),
+			download: new ApiError(409),
+		})
+
+		await pressUpdate()
+
+		expect(toastAdd).not.toHaveBeenCalled()
+		expect(cardText()).toContain("This site can't update itself from the browser yet.")
+	})
+})
+
+describe('Settings, 400 nothing to update', () => {
+	it('toasts and reloads the status once', async () => {
+		await mountSettings({
+			role: 'owner',
+			status: startable(),
+			download: new ApiError(400),
+		})
+		const readsBefore = callsTo(STATUS_PATH).length
+
+		await pressUpdate()
+
+		expect(toastAdd).toHaveBeenCalledWith(
+			expect.objectContaining({
+				color: 'info',
+				title: 'Nothing to update',
+				description: 'You already have the latest version.',
+			}),
+		)
+		expect(callsTo(STATUS_PATH)).toHaveLength(readsBefore + 1)
+	})
+})
+
+describe('Settings, 403 role changed on Update', () => {
+	it('toasts, reloads and renders the admin view', async () => {
+		await mountSettings({
+			role: 'owner',
+			meAfterRefresh: 'admin',
+			status: sequence(startable(), newerAvailable()),
+			download: new ApiError(403),
+		})
+
+		await pressUpdate()
+
+		expect(toastAdd).toHaveBeenCalledWith(
+			expect.objectContaining({
+				color: 'error',
+				title: 'Only the owner can do this',
+				description: 'Ask the owner of this site to update RenewCMS.',
+			}),
+		)
+		expect(getMeMock).toHaveBeenCalled()
+		expect(cardText()).toContain('Only the owner can update RenewCMS.')
+		expect(cardButtons()).toEqual([])
+	})
+})
+
+describe('Settings, 429 on Update', () => {
+	it('counts down through useRetryAfter and posts the download again at zero', async () => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: startable(),
+			download: sequence(new ApiError(429, 42), downloading()),
+		})
+
+		await pressUpdate()
+
+		expect(cardText()).toContain('Too many tries')
+		expect(cardText()).toContain('Wait a moment before trying again.')
+		expect((findButton('Try again in 0:42') as HTMLButtonElement).disabled).toBe(true)
+
+		await tick(1000)
+		expect(findButton('Try again in 0:41')).toBeTruthy()
+
+		await tick(41000)
+		const again = findButton('Try again') as HTMLButtonElement
+		expect(again.disabled).toBe(false)
+
+		again.click()
+		await flushPromises()
+
+		expect(callsTo(DOWNLOAD_PATH)).toHaveLength(2)
+		expect(callsTo(CHECK_PATH)).toHaveLength(0)
+		expect(cardText()).toContain('Downloading version 2.3.0-beta…')
+	})
+})
+
+describe('Settings, reload keeps progress', () => {
+	it('stops polling on leave and resumes it on the next open', async () => {
+		useTimers()
+		await mountSettings({ role: 'owner', status: downloading(42) })
+		await tick(1000)
+		const beforeLeaving = callsTo(STATUS_PATH).length
+		expect(beforeLeaving).toBeGreaterThan(1)
+
+		wrapper!.unmount()
+		wrapper = null
+		await tick(5000)
+		expect(callsTo(STATUS_PATH)).toHaveLength(beforeLeaving)
+
+		document.body.innerHTML = ''
+		await mountSettings({ role: 'owner', status: downloading(42) })
+		expect(progressbar()!.getAttribute('aria-valuenow')).toBe('42')
+		const afterOpening = callsTo(STATUS_PATH).length
+		await tick(2000)
+		expect(callsTo(STATUS_PATH)).toHaveLength(afterOpening + 2)
+	})
+
+	it.each([
+		{ name: 'idle', status: startable() },
+		{ name: 'ready', status: ready() },
+		{ name: 'failed', status: failedWith('download') },
+	])('does not poll while the state is $name', async ({ status }) => {
+		useTimers()
+		await mountSettings({ role: 'owner', status })
+		const afterOpening = callsTo(STATUS_PATH).length
+
+		await tick(5000)
+
+		expect(callsTo(STATUS_PATH)).toHaveLength(afterOpening)
+	})
+})
+
+describe('Settings, a poll that fails keeps the card', () => {
+	it.each([
+		{ name: 'a 500', failure: new ApiError(500) },
+		{ name: 'a network error', failure: new NetworkError() },
+	])('keeps the last progress and polls again after $name', async ({ failure }) => {
+		useTimers()
+		await mountSettings({
+			role: 'owner',
+			status: sequence(downloading(42), failure, failure, downloading(60)),
+		})
+
+		await tick(1000)
+		expect(cardText()).toContain('Downloading version 2.3.0-beta…')
+		expect(progressbar()!.getAttribute('aria-valuenow')).toBe('42')
+		expect(cardText()).not.toContain("The download didn't finish")
+
+		await tick(1000)
+		expect(progressbar()!.getAttribute('aria-valuenow')).toBe('42')
+
+		await tick(1000)
+		expect(progressbar()!.getAttribute('aria-valuenow')).toBe('60')
+	})
+})
+
+describe('Settings, admin view during a job', () => {
+	it('shows the admin copy with no button, progressbar or poll', async () => {
+		useTimers()
+		await mountSettings({
+			role: 'admin',
+			status: { ...downloading(42), can_apply: false },
+		})
+		const afterOpening = callsTo(STATUS_PATH).length
+
+		await tick(5000)
+
+		expect(cardText()).toContain('Version 2.3.0-beta is available')
+		expect(cardText()).toContain(
+			'You have v2.2.0-beta. Only the owner can update RenewCMS. Ask the owner of this site.',
+		)
+		expect(cardButtons()).toEqual([])
+		expect(progressbar()).toBeNull()
+		expect(callsTo(STATUS_PATH)).toHaveLength(afterOpening)
+	})
+})

web/src/views/__tests__/updateTestKit.ts

@@ -13,6 +13,10 @@ export const NOTE_ITEMS = [
 
 export const STATUS_PATH = '/v1/system/update'
 export const CHECK_PATH = '/v1/system/update/check'
+export const DOWNLOAD_PATH = '/v1/system/update/download'
+
+export const BOARD_TOTAL_BYTES = 27262976
+export const BOARD_DONE_BYTES = 11534336
 
 export function hoursAgo(hours: number) {
 	return new Date(Date.now() - hours * 60 * 60 * 1000).toISOString()
@@ -64,3 +68,29 @@ export function findButton(label: string, root: ParentNode = document.body) {
 		(button) => button.textContent?.trim() === label,
 	)
 }
+
+export function startable(overrides: Partial<UpdateStatus> = {}): UpdateStatus {
+	return newerAvailable({ can_apply: true, ...overrides })
+}
+
+export function downloading(percent = 42): UpdateStatus {
+	const downloaded =
+		percent === 42 ? BOARD_DONE_BYTES : Math.floor((BOARD_TOTAL_BYTES * percent) / 100)
+	return startable({
+		state: 'downloading',
+		started_at: '2026-09-30T09:51:00Z',
+		progress: { percent, downloaded_bytes: downloaded, total_bytes: BOARD_TOTAL_BYTES },
+	})
+}
+
+export function verifying(): UpdateStatus {
+	return startable({ state: 'verifying', started_at: '2026-09-30T09:51:00Z' })
+}
+
+export function ready(): UpdateStatus {
+	return startable({ state: 'ready', started_at: '2026-09-30T09:51:00Z' })
+}
+
+export function failedWith(error: 'download' | 'verification'): UpdateStatus {
+	return startable({ state: 'failed', error, started_at: '2026-09-30T09:51:00Z' })
+}