feat: 跨实例同步移植第8轮（前端 helpers + 同步设置 UI）

新增同步 helpers（synced-options / synced-packs / game-options），在 instance helper 中补充同步类型与 API。新增实例设置「同步」标签页（SyncSettings）及 SyncSource / SyncedPacks / servers / command-history 四个弹窗，并把 CheckCircleButton、TeleportOverflowMenu 从 ui 包导出。同步相关的 en-US / zh-CN 文案已补齐（各 62 条）。game-settings-modal 留待下一轮。

apps/app-frontend/src/components/ui/instance_settings/SyncSettings.vue

@@ -0,0 +1,607 @@
+<script setup lang="ts">
+import { EditIcon } from '@modrinth/assets'
+import {
+	commonMessages,
+	defineMessages,
+	IconButton,
+	injectNotificationManager,
+	Toggle,
+	useVIntl,
+} from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, nextTick, onScopeDispose, ref } from 'vue'
+
+import { gameSettingsKeys } from '@/helpers/game-options'
+import {
+	type GlobalSyncedOptions,
+	isSyncedOptionAvailable,
+	set_global_synced_option,
+	type SyncedOption,
+} from '@/helpers/instance'
+import {
+	canSourceMultiplayerServers,
+	gameOptionsSyncSourcesQueryOptions,
+	globalSyncedOptionsQueryOptions,
+	initializedSyncedOptionsQueryOptions,
+	syncedOptionsKeys,
+	syncedServersQueryOptions,
+} from '@/helpers/synced-options'
+import { syncedPackKeys, syncedPackQueryOptions } from '@/helpers/synced-packs'
+import { instanceKeys, instanceListQueryOptions } from '@/pages/instance/query-options'
+
+import SettingsRow from '../settings/SettingsRow.vue'
+import SettingsSection from '../settings/SettingsSection.vue'
+import CommandHistoryModal from '../settings/instances/command-history-modal.vue'
+import SyncedServersModal from '../settings/instances/servers-modal.vue'
+import SyncedPacksModal from '../settings/instances/SyncedPacksModal.vue'
+import SyncSourceModal from '../settings/instances/SyncSourceModal.vue'
+
+const { handleError } = injectNotificationManager()
+const { formatMessage } = useVIntl()
+const queryClient = useQueryClient()
+const syncedPacksModal = ref<InstanceType<typeof SyncedPacksModal>>()
+const commandHistoryModal = ref<InstanceType<typeof CommandHistoryModal>>()
+const syncedServersModal = ref<InstanceType<typeof SyncedServersModal>>()
+
+const messages = defineMessages({
+	globalOptionsTitle: {
+		id: 'app.settings.synced-options.title',
+		defaultMessage: 'Options synced across all instances',
+	},
+	resourcePacks: {
+		id: 'app.settings.synced-options.resource-packs',
+		defaultMessage: 'Sync resource packs',
+	},
+	resourcePacksDescription: {
+		id: 'app.settings.synced-options.resource-packs.description',
+		defaultMessage: 'Use the same resource packs across your instances.',
+	},
+	dataPacks: { id: 'app.settings.synced-options.data-packs', defaultMessage: 'Sync data packs' },
+	dataPacksDescription: {
+		id: 'app.settings.synced-options.data-packs.description',
+		defaultMessage: 'Use the same datapacks across your instances',
+	},
+	packsDisabled: {
+		id: 'app.settings.synced-options.packs.disabled',
+		defaultMessage: 'Enable syncing before editing shared packs.',
+	},
+	gameSettings: {
+		id: 'app.settings.synced-options.game-settings',
+		defaultMessage: 'Sync game options',
+	},
+	gameSettingsDescription: {
+		id: 'app.settings.synced-options.game-settings.description',
+		defaultMessage: 'Use the same game options across your instances.',
+	},
+	gameSettingsButton: {
+		id: 'app.settings.synced-options.game-settings.button',
+		defaultMessage: 'Edit game settings',
+	},
+	gameSettingsDisabledTooltip: {
+		id: 'app.settings.synced-options.game-settings.disabled-tooltip',
+		defaultMessage: 'Enable game settings sync before choosing individual settings.',
+	},
+	noGameOptionsToEdit: {
+		id: 'app.settings.synced-options.game-settings.no-options-to-edit',
+		defaultMessage: "You haven't got any options yet to edit",
+	},
+	multiplayerServers: {
+		id: 'app.settings.synced-options.multiplayer-servers',
+		defaultMessage: 'Sync multiplayer servers',
+	},
+	multiplayerServersDescription: {
+		id: 'app.settings.synced-options.multiplayer-servers.description',
+		defaultMessage: 'Use the same multiplayer servers across your instances.',
+	},
+	commandHistory: {
+		id: 'app.settings.synced-options.command-history',
+		defaultMessage: 'Sync command history',
+	},
+	commandHistoryDescription: {
+		id: 'app.settings.synced-options.command-history.description',
+		defaultMessage: 'Use the same command history across your instances.',
+	},
+	creativeHotbars: {
+		id: 'app.settings.synced-options.creative-hotbars',
+		defaultMessage: 'Sync saved creative hotbars',
+	},
+	creativeHotbarsDescription: {
+		id: 'app.settings.synced-options.creative-hotbars.description',
+		defaultMessage: 'Use the same saved creative hotbars across your instances.',
+	},
+	gameSettingsSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.game-settings-title',
+		defaultMessage: 'Choose game settings source',
+	},
+	multiplayerServersSyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.multiplayer-servers-description',
+		defaultMessage:
+			'Choose which instance to copy your multiplayer servers from. These servers are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	multiplayerServersSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.multiplayer-servers-title',
+		defaultMessage: 'Choose multiplayer servers source',
+	},
+	commandHistorySyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.command-history-description',
+		defaultMessage:
+			'Choose which instance to copy your command history from. This history is only used for the initial sync, and you can edit it from any instance afterward.',
+	},
+	commandHistorySyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.command-history-title',
+		defaultMessage: 'Choose command history source',
+	},
+	creativeHotbarsSyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.creative-hotbars-description',
+		defaultMessage:
+			'Choose which instance to copy your saved creative hotbars from. These hotbars are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	creativeHotbarsSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.creative-hotbars-title',
+		defaultMessage: 'Choose creative hotbars source',
+	},
+	gameSettingsSyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.game-settings-description',
+		defaultMessage:
+			'Choose which instance to copy your game settings from. These settings are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	resourcePacksSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.resource-packs-title',
+		defaultMessage: 'Choose resource packs source',
+	},
+	resourcePacksSyncSourceDescription: {
+		id: 'app.sync-instances-update.choose-source.resource-packs',
+		defaultMessage:
+			'Choose which instance to copy your resource packs from. These packs are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	dataPacksSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.data-packs-title',
+		defaultMessage: 'Choose data packs source',
+	},
+	dataPacksSyncSourceDescription: {
+		id: 'app.sync-instances-update.choose-source.data-packs',
+		defaultMessage:
+			'Choose which instance to copy your data packs from. These packs are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	noServersSyncedYet: {
+		id: 'app.settings.synced-options.multiplayer-servers.none-synced-yet',
+		defaultMessage: "You haven't synced any servers yet",
+	},
+	noResourcePacksSyncedYet: {
+		id: 'app.settings.synced-options.resource-packs.none-synced-yet',
+		defaultMessage: "You haven't synced any resource packs yet",
+	},
+	noDataPacksSyncedYet: {
+		id: 'app.settings.synced-options.data-packs.none-synced-yet',
+		defaultMessage: "You haven't synced any data packs yet",
+	},
+	noInstancesToEdit: {
+		id: 'app.settings.synced-options.edit.no-instances',
+		defaultMessage: 'Add an instance before editing synced data.',
+	},
+	noSyncedDataToEdit: {
+		id: 'app.settings.synced-options.edit.no-synced-data',
+		defaultMessage: 'Choose a sync source before editing this setting.',
+	},
+})
+
+const globalRows: Array<{
+	option: SyncedOption
+	title: keyof typeof messages
+	description?: keyof typeof messages
+	editable?: 'game-settings' | 'servers' | 'commands' | 'resourcepack' | 'datapack'
+}> = [
+	{
+		option: 'game_options',
+		title: 'gameSettings',
+		description: 'gameSettingsDescription',
+		editable: 'game-settings',
+	},
+	{
+		option: 'multiplayer_servers',
+		title: 'multiplayerServers',
+		description: 'multiplayerServersDescription',
+		editable: 'servers',
+	},
+	{
+		option: 'resource_packs',
+		title: 'resourcePacks',
+		description: 'resourcePacksDescription',
+		editable: 'resourcepack',
+	},
+	{
+		option: 'data_packs',
+		title: 'dataPacks',
+		description: 'dataPacksDescription',
+		editable: 'datapack',
+	},
+	{
+		option: 'command_history',
+		title: 'commandHistory',
+		description: 'commandHistoryDescription',
+		editable: 'commands',
+	},
+	{
+		option: 'creative_hotbars',
+		title: 'creativeHotbars',
+		description: 'creativeHotbarsDescription',
+	},
+]
+
+const availableGlobalRows = globalRows.filter((row) => isSyncedOptionAvailable(row.option))
+
+const defaultGlobalOptions: GlobalSyncedOptions = {
+	resource_packs: false,
+	data_packs: false,
+	game_options: false,
+	command_history: false,
+	multiplayer_servers: false,
+	creative_hotbars: false,
+	screenshots: false,
+}
+
+const globalOptionsQuery = useQuery(globalSyncedOptionsQueryOptions())
+const initializedOptionsQuery = useQuery(initializedSyncedOptionsQueryOptions())
+const gameOptionSourcesQuery = useQuery(gameOptionsSyncSourcesQueryOptions())
+const resourcePacksQuery = useQuery(syncedPackQueryOptions('resourcepack'))
+const dataPacksQuery = useQuery(syncedPackQueryOptions('datapack'))
+const globalOptions = computed(() => globalOptionsQuery.data.value ?? defaultGlobalOptions)
+const initializedOptions = computed(
+	() => initializedOptionsQuery.data.value ?? defaultGlobalOptions,
+)
+const gameOptionSources = computed(() => gameOptionSourcesQuery.data.value ?? [])
+const instancesQuery = useQuery(instanceListQueryOptions())
+const instances = computed(() => instancesQuery.data.value ?? [])
+const serversQuery = useQuery(syncedServersQueryOptions())
+const syncedServers = computed(() => serversQuery.data.value ?? [])
+const eligibleGameOptionSourceIds = computed(
+	() =>
+		new Set(
+			gameOptionSources.value.filter((source) => source.eligible).map((source) => source.source_id),
+		),
+)
+const hasGameOptionsToEdit = computed(
+	() =>
+		initializedOptions.value.game_options ||
+		instances.value.some(
+			(instance) =>
+				instance?.synced_options?.game_options &&
+				eligibleGameOptionSourceIds.value.has(instance.id),
+		),
+)
+const baseOption = ref<SyncedOption | null>(null)
+const baseInstanceId = ref('')
+const baseModal = ref<InstanceType<typeof SyncSourceModal> | null>(null)
+const baseSourcesLoading = computed(() =>
+	baseOption.value === null
+		? false
+		: baseOption.value === 'game_options'
+			? gameOptionSourcesQuery.isPending.value
+			: instancesQuery.isPending.value,
+)
+const baseSourcesError = computed(() =>
+	baseOption.value === 'game_options'
+		? gameOptionSourcesQuery.isError.value && !gameOptionSourcesQuery.data.value
+		: instancesQuery.isError.value && !instancesQuery.data.value,
+)
+let baseSourceGeneration = 0
+
+const baseInstanceTitle = computed(() => {
+	switch (baseOption.value) {
+		case 'game_options':
+			return formatMessage(messages.gameSettingsSyncSourceTitle)
+		case 'multiplayer_servers':
+			return formatMessage(messages.multiplayerServersSyncSourceTitle)
+		case 'command_history':
+			return formatMessage(messages.commandHistorySyncSourceTitle)
+		case 'creative_hotbars':
+			return formatMessage(messages.creativeHotbarsSyncSourceTitle)
+		case 'resource_packs':
+			return formatMessage(messages.resourcePacksSyncSourceTitle)
+		case 'data_packs':
+			return formatMessage(messages.dataPacksSyncSourceTitle)
+		default:
+			return ''
+	}
+})
+
+const baseInstanceDescription = computed(() => {
+	switch (baseOption.value) {
+		case 'game_options':
+			return formatMessage(messages.gameSettingsSyncSourceDescription)
+		case 'multiplayer_servers':
+			return formatMessage(messages.multiplayerServersSyncSourceDescription)
+		case 'command_history':
+			return formatMessage(messages.commandHistorySyncSourceDescription)
+		case 'creative_hotbars':
+			return formatMessage(messages.creativeHotbarsSyncSourceDescription)
+		case 'resource_packs':
+			return formatMessage(messages.resourcePacksSyncSourceDescription)
+		case 'data_packs':
+			return formatMessage(messages.dataPacksSyncSourceDescription)
+		default:
+			return ''
+	}
+})
+
+const baseInstances = computed(() =>
+	baseOption.value === 'game_options'
+		? gameOptionSources.value.map((source) => ({
+				id: source.source_id,
+				name: source.name,
+				icon_path: source.icon_path,
+				eligible: source.eligible,
+			}))
+		: instances.value.map((instance) => ({
+				id: instance.id,
+				name: instance.name,
+				icon_path: instance.icon_path,
+				eligible:
+					!instance.quarantined &&
+					(baseOption.value !== 'multiplayer_servers' || canSourceMultiplayerServers(instance)),
+			})),
+)
+
+async function invalidateSyncedOptions() {
+	await Promise.all([
+		queryClient.invalidateQueries({ queryKey: instanceKeys.all }),
+		queryClient.invalidateQueries({ queryKey: ['instance-synced-options'] }),
+		queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.global }),
+		queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.initialized }),
+		queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.gameSources }),
+		queryClient.invalidateQueries({ queryKey: ['worlds'] }),
+		queryClient.invalidateQueries({ queryKey: syncedPackKeys.all }),
+	])
+}
+
+function emptySyncedContentMessage(row: (typeof globalRows)[number]) {
+	if (
+		row.editable === 'servers' &&
+		(instances.value.length === 0 || syncedServers.value.length === 0)
+	) {
+		return messages.noServersSyncedYet
+	}
+	if (row.editable === 'resourcepack' && !resourcePacksQuery.data.value?.length) {
+		return messages.noResourcePacksSyncedYet
+	}
+	if (row.editable === 'datapack' && !dataPacksQuery.data.value?.length) {
+		return messages.noDataPacksSyncedYet
+	}
+}
+
+function canEditGlobalOption(row: (typeof globalRows)[number]): boolean {
+	if (!row.editable || !globalOptions.value[row.option]) return false
+	if (emptySyncedContentMessage(row)) return false
+	if (row.editable === 'resourcepack' || row.editable === 'datapack') return true
+	if (row.editable === 'game-settings') return hasGameOptionsToEdit.value
+	return instances.value.length > 0 && initializedOptions.value[row.option]
+}
+
+function editGlobalOptionTooltip(row: (typeof globalRows)[number]): string {
+	const emptyMessage = emptySyncedContentMessage(row)
+	if (emptyMessage) return formatMessage(emptyMessage)
+	if (row.editable === 'resourcepack' || row.editable === 'datapack') {
+		return formatMessage(
+			globalOptions.value[row.option] ? commonMessages.editButton : messages.packsDisabled,
+		)
+	}
+	if (row.editable === 'game-settings') {
+		if (!hasGameOptionsToEdit.value) return formatMessage(messages.noGameOptionsToEdit)
+		if (!globalOptions.value[row.option]) {
+			return formatMessage(messages.gameSettingsDisabledTooltip)
+		}
+		return formatMessage(messages.gameSettingsButton)
+	}
+	if (instances.value.length === 0) {
+		return formatMessage(messages.noInstancesToEdit)
+	}
+	if (!initializedOptions.value[row.option]) {
+		return formatMessage(messages.noSyncedDataToEdit)
+	}
+	return formatMessage(commonMessages.editButton)
+}
+
+type GlobalOptionMutationVariables = {
+	option: SyncedOption
+	enabled: boolean
+	baseInstanceId?: string
+}
+
+const globalOptionMutation = useMutation({
+	mutationKey: syncedOptionsKeys.set,
+	mutationFn: ({ option, enabled, baseInstanceId }: GlobalOptionMutationVariables) =>
+		set_global_synced_option(option, enabled, baseInstanceId),
+	onError: handleError,
+	onSuccess: async (options, { option, enabled }) => {
+		queryClient.setQueryData(syncedOptionsKeys.global, options)
+		if (option === 'game_options') {
+			await queryClient.invalidateQueries({ queryKey: gameSettingsKeys.synced })
+		}
+		if (enabled && option === 'multiplayer_servers') {
+			await queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.servers })
+		}
+	},
+	onSettled: async (_data, _error, { option }) => {
+		if (queryClient.isMutating({ mutationKey: syncedOptionsKeys.set }) === 1) {
+			if (option === 'resource_packs' || option === 'data_packs') {
+				void Promise.all([
+					queryClient.invalidateQueries({ queryKey: instanceKeys.all }),
+					queryClient.invalidateQueries({ queryKey: ['instance-synced-options'] }),
+					queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.global }),
+					queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.initialized }),
+					queryClient.invalidateQueries({ queryKey: syncedPackKeys.all }),
+				])
+				return
+			}
+			await invalidateSyncedOptions()
+		}
+	},
+})
+
+const canToggleGlobalOptions = computed(
+	() =>
+		!!globalOptionsQuery.data.value &&
+		!globalOptionMutation.isPending.value &&
+		!baseSourcesLoading.value,
+)
+
+async function chooseBaseInstance(option: SyncedOption) {
+	const generation = ++baseSourceGeneration
+	baseOption.value = option
+	baseInstanceId.value = ''
+
+	try {
+		if (option === 'game_options') {
+			await queryClient.fetchQuery(gameOptionsSyncSourcesQueryOptions())
+		} else {
+			await queryClient.fetchQuery({ ...instanceListQueryOptions(), staleTime: 0 })
+		}
+	} catch (error) {
+		if (generation !== baseSourceGeneration) return
+		handleError(error)
+		baseModal.value?.show()
+		return
+	}
+
+	if (generation !== baseSourceGeneration) return
+	const eligibleSources = baseInstances.value.filter((source) => source.eligible)
+	baseInstanceId.value = eligibleSources[0]?.id ?? ''
+	if (eligibleSources.length > 1) {
+		baseModal.value?.show()
+		return
+	}
+
+	try {
+		await globalOptionMutation.mutateAsync({
+			option,
+			enabled: true,
+			baseInstanceId: eligibleSources[0]?.id,
+		})
+		await nextTick()
+		if (!baseModal.value?.hide()) clearBaseSource()
+	} catch {
+		return
+	}
+}
+
+function toggleGlobalOption(option: SyncedOption, enabled: boolean) {
+	if (!isSyncedOptionAvailable(option) || !canToggleGlobalOptions.value) return
+	if (enabled && option !== 'screenshots') {
+		void chooseBaseInstance(option)
+		return
+	}
+	globalOptionMutation.mutate({ option, enabled })
+}
+
+async function confirmBaseInstance() {
+	if (!baseOption.value || !baseInstanceId.value) return
+	try {
+		await globalOptionMutation.mutateAsync({
+			option: baseOption.value,
+			enabled: true,
+			baseInstanceId: baseInstanceId.value,
+		})
+		await nextTick()
+		baseModal.value?.hide()
+	} catch {
+		return
+	}
+}
+
+function editGlobalOption(row: (typeof globalRows)[number]) {
+	if (!isSyncedOptionAvailable(row.option)) return
+	if (row.editable === 'resourcepack' || row.editable === 'datapack') {
+		void syncedPacksModal.value?.show(row.editable)
+	} else if (row.editable === 'game-settings') {
+		// Game settings modal is ported in a later pass.
+		return
+	} else if (row.editable === 'commands') {
+		void commandHistoryModal.value?.show()
+	} else {
+		void syncedServersModal.value?.show()
+	}
+}
+
+
+
+function clearBaseSource() {
+	baseSourceGeneration++
+	baseOption.value = null
+}
+
+onScopeDispose(clearBaseSource)
+</script>
+
+<template>
+	<div class="flex flex-col gap-6">
+		<SyncedPacksModal ref="syncedPacksModal" />
+		<CommandHistoryModal ref="commandHistoryModal" />
+		<SyncedServersModal ref="syncedServersModal" />
+
+		<SyncSourceModal
+			ref="baseModal"
+			v-model="baseInstanceId"
+			:title="baseInstanceTitle"
+			:description="baseInstanceDescription"
+			:sources="baseInstances"
+			:loading="baseSourcesLoading"
+			:error="baseSourcesError"
+			:pending="globalOptionMutation.isPending.value"
+			@confirm="confirmBaseInstance"
+			@close="clearBaseSource"
+			@retry="baseOption && chooseBaseInstance(baseOption)"
+		/>
+
+		<SettingsSection>
+			<template #header>
+				<h2
+					id="settings-target-instance-sync-options"
+					tabindex="-1"
+					class="m-0 text-lg font-semibold text-[var(--color-text-primary)]"
+				>
+					{{ formatMessage(messages.globalOptionsTitle) }}
+				</h2>
+			</template>
+			<SettingsRow v-for="row in availableGlobalRows" :key="row.option">
+				<template #label>
+					<span :id="`settings-target-instance-sync-${row.option}`" tabindex="-1">
+						{{ formatMessage(messages[row.title]) }}
+					</span>
+				</template>
+				<template v-if="row.description" #description>
+					{{ formatMessage(messages[row.description]) }}
+				</template>
+				<template #control>
+					<span v-if="row.editable" v-tooltip="editGlobalOptionTooltip(row)" class="flex">
+						<IconButton
+							type="outlined"
+							circular
+							:disabled="
+								!canEditGlobalOption(row) ||
+								initializedOptionsQuery.isPending.value ||
+								globalOptionMutation.isPending.value
+							"
+							:label="
+								formatMessage(
+									row.editable === 'game-settings'
+										? messages.gameSettingsButton
+										: commonMessages.editButton,
+								)
+							"
+							@click="editGlobalOption(row)"
+						>
+							<EditIcon aria-hidden="true" />
+						</IconButton>
+					</span>
+					<Toggle
+						:id="`global-sync-${row.option}`"
+						:model-value="globalOptions[row.option]"
+						:disabled="!canToggleGlobalOptions"
+						:aria-label="formatMessage(messages[row.title])"
+						@update:model-value="(enabled) => toggleGlobalOption(row.option, enabled)"
+					/>
+				</template>
+			</SettingsRow>
+		</SettingsSection>
+	</div>
+</template>

apps/app-frontend/src/components/ui/modal/InstanceSettingsModal.vue

@@ -7,6 +7,7 @@ import {
 	FileArchiveIcon,
 	InfoIcon,
 	MonitorIcon,
+	RefreshCwIcon,
 	WrenchIcon,
 } from '@modrinth/assets'
 import {
@@ -23,6 +24,7 @@ import { computed, nextTick, ref, watch } from 'vue'
 import BackupSettings from '@/components/ui/instance_settings/BackupSettings.vue'
 import CoreComponentsSettings from '@/components/ui/instance_settings/CoreComponentsSettings.vue'
 import GeneralSettings from '@/components/ui/instance_settings/GeneralSettings.vue'
+import SyncSettings from '@/components/ui/instance_settings/SyncSettings.vue'
 import HooksSettings from '@/components/ui/instance_settings/HooksSettings.vue'
 import InstallationSettings from '@/components/ui/instance_settings/InstallationSettings.vue'
 import JavaSettings from '@/components/ui/instance_settings/JavaSettings.vue'
@@ -147,6 +149,14 @@ const tabs = computed<TabbedModalTab[]>(() => [
 		icon: CodeIcon,
 		content: HooksSettings,
 	},
+	{
+		name: defineMessage({
+			id: 'instance.settings.tabs.sync',
+			defaultMessage: 'Sync',
+		}),
+		icon: RefreshCwIcon,
+		content: SyncSettings,
+	},
 ])
 
 function getSupportedModpackLoaders() {

apps/app-frontend/src/components/ui/settings/instances/SyncSourceModal.vue

@@ -0,0 +1,181 @@
+<script setup lang="ts">
+import { RefreshCwIcon, SearchIcon, SpinnerIcon, XIcon } from '@modrinth/assets'
+import {
+	Avatar,
+	Button,
+	CheckCircleButton,
+	commonMessages,
+	defineMessages,
+	NewModal,
+	StyledInput,
+	useVIntl,
+} from '@modrinth/ui'
+import { computed, ref, useTemplateRef } from 'vue'
+
+import { getInstanceIconUrl } from '@/helpers/instance'
+
+const props = defineProps<{
+	title: string
+	description: string
+	sources: {
+		id: string
+		name: string
+		icon_path?: string | null
+		eligible: boolean
+	}[]
+	loading?: boolean
+	pending?: boolean
+	error?: boolean
+}>()
+
+const emit = defineEmits<{
+	confirm: []
+	close: []
+	retry: []
+}>()
+
+const selectedInstanceId = defineModel<string>({ required: true })
+const modal = useTemplateRef<InstanceType<typeof NewModal>>('modal')
+const search = ref('')
+const { formatMessage } = useVIntl()
+
+const messages = defineMessages({
+	ineligible: {
+		id: 'app.settings.synced-options.choose-sync-source.ineligible',
+		defaultMessage: 'You cannot choose this instance as a sync source',
+	},
+	search: {
+		id: 'app.settings.synced-options.choose-sync-source.search-placeholder',
+		defaultMessage: 'Search instance',
+	},
+	empty: {
+		id: 'app.settings.synced-options.choose-sync-source.no-instances-found',
+		defaultMessage: 'No instances found',
+	},
+	sync: {
+		id: 'app.settings.synced-options.choose-sync-source.sync',
+		defaultMessage: 'Sync',
+	},
+	loadError: {
+		id: 'app.settings.synced-options.choose-sync-source.load-error',
+		defaultMessage: 'Could not load sync sources. Please try again.',
+	},
+	retry: {
+		id: 'app.settings.synced-options.choose-sync-source.retry',
+		defaultMessage: 'Try again',
+	},
+})
+
+const filteredSources = computed(() => {
+	const query = search.value.trim().toLocaleLowerCase()
+	return props.sources.filter((source) => source.name.toLocaleLowerCase().includes(query))
+})
+const canConfirm = computed(
+	() =>
+		!props.loading &&
+		!props.pending &&
+		!props.error &&
+		props.sources.some((source) => source.id === selectedInstanceId.value && source.eligible),
+)
+
+function show() {
+	search.value = ''
+	modal.value?.show()
+}
+
+function hide() {
+	return modal.value?.hide()
+}
+
+defineExpose({ show, hide })
+</script>
+
+<template>
+	<NewModal
+		ref="modal"
+		:header="title"
+		no-padding
+		actions-divider
+		max-width="560px"
+		width="560px"
+		:disable-close="pending"
+		:on-after-hide="() => emit('close')"
+	>
+		<p
+			class="m-0 border-0 border-b border-solid border-surface-5 p-6 text-[var(--color-text-default)]"
+		>
+			{{ description }}
+		</p>
+
+		<div class="flex h-[400px] flex-col gap-3 overflow-y-auto bg-surface-2 px-6 py-4">
+			<StyledInput
+				v-model="search"
+				:icon="SearchIcon"
+				type="search"
+				autocomplete="off"
+				:placeholder="formatMessage(messages.search)"
+				:aria-label="formatMessage(messages.search)"
+				class="shrink-0"
+			/>
+
+			<div v-if="loading" class="flex flex-1 items-center justify-center" aria-busy="true">
+				<SpinnerIcon class="size-5 animate-spin text-[var(--color-text-tertiary)]" />
+			</div>
+			<div v-else-if="error" class="flex flex-1 flex-col items-center justify-center gap-3">
+				<p role="alert" class="m-0 text-center text-[var(--color-text-default)]">
+					{{ formatMessage(messages.loadError) }}
+				</p>
+				<Button @click="emit('retry')">{{ formatMessage(messages.retry) }}</Button>
+			</div>
+			<div
+				v-else-if="filteredSources.length === 0"
+				class="flex flex-1 items-center justify-center text-[var(--color-text-tertiary)]"
+			>
+				{{ formatMessage(messages.empty) }}
+			</div>
+			<div v-else role="radiogroup" :aria-label="title" class="flex flex-col gap-1">
+				<div
+					v-for="source in filteredSources"
+					:key="source.id"
+					v-tooltip="!source.eligible ? formatMessage(messages.ineligible) : undefined"
+				>
+					<CheckCircleButton
+						:checked="selectedInstanceId === source.id"
+						:disabled="pending || !source.eligible"
+						class="min-h-10"
+						@click="selectedInstanceId = source.id"
+					>
+						<span class="size-5 shrink-0 overflow-hidden rounded-[6px]">
+							<Avatar
+								:src="getInstanceIconUrl(source.icon_path)"
+								:alt="source.name"
+								:tint-by="source.id"
+								size="1.25rem"
+								no-shadow
+							/>
+						</span>
+						<span class="min-w-0 flex-1 truncate">{{ source.name }}</span>
+					</CheckCircleButton>
+				</div>
+			</div>
+		</div>
+		<template #actions>
+			<div class="flex justify-end gap-2 p-2">
+				<Button type="outlined" :disabled="pending" @click="hide">
+					<XIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.cancelButton) }}
+				</Button>
+				<Button
+					type="colored"
+					color="brand"
+					:disabled="!canConfirm"
+					:loading="pending"
+					@click="canConfirm && emit('confirm')"
+				>
+					<RefreshCwIcon :class="{ 'animate-spin': pending }" aria-hidden="true" />
+					{{ formatMessage(messages.sync) }}
+				</Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/SyncedPacksModal.vue

@@ -0,0 +1,81 @@
+<script setup lang="ts">
+import { Button, defineMessages, NewModal, useVIntl } from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, ref } from 'vue'
+
+import {
+	remove_synced_pack,
+	set_synced_pack_enabled,
+	syncedPackKeys,
+	syncedPackQueryOptions,
+	type SyncedPackType,
+} from '@/helpers/synced-packs'
+
+const modal = ref<InstanceType<typeof NewModal>>()
+const type = ref<SyncedPackType>('resourcepack')
+const queryClient = useQueryClient()
+const { formatMessage } = useVIntl()
+const messages = defineMessages({
+	resourcePacks: {
+		id: 'app.settings.synced-packs.resource-packs',
+		defaultMessage: 'Resource packs',
+	},
+	dataPacks: { id: 'app.settings.synced-packs.data-packs', defaultMessage: 'Data packs' },
+	enable: { id: 'app.settings.synced-packs.enable', defaultMessage: 'Enable' },
+	disable: { id: 'app.settings.synced-packs.disable', defaultMessage: 'Disable' },
+	remove: { id: 'app.settings.synced-packs.remove', defaultMessage: 'Remove' },
+	empty: { id: 'app.settings.synced-packs.empty', defaultMessage: 'No synced packs' },
+})
+const query = useQuery(computed(() => syncedPackQueryOptions(type.value)))
+const packs = computed(() => query.value.data.value ?? [])
+const mutation = useMutation({
+	mutationFn: async (request: { id: string; enabled?: boolean; remove?: boolean }) => {
+		if (request.remove) await remove_synced_pack(request.id)
+		else await set_synced_pack_enabled(request.id, request.enabled ?? true)
+	},
+	onSuccess: () => queryClient.invalidateQueries({ queryKey: syncedPackKeys.all }),
+})
+
+async function show(nextType: SyncedPackType) {
+	type.value = nextType
+	modal.value?.show()
+	await queryClient.invalidateQueries({ queryKey: syncedPackKeys.list(nextType) })
+}
+
+function hide() {
+	modal.value?.hide()
+}
+
+defineExpose({ show, hide })
+</script>
+
+<template>
+	<NewModal
+		ref="modal"
+		:header="formatMessage(type === 'resourcepack' ? messages.resourcePacks : messages.dataPacks)"
+		max-width="42rem"
+	>
+		<div v-if="packs.length" class="flex flex-col gap-2">
+			<div
+				v-for="pack in packs"
+				:key="pack.id"
+				class="flex items-center gap-3 border-b border-solid border-surface-4 py-2"
+			>
+				<span class="min-w-0 flex-1 truncate">{{ pack.file_name }}</span>
+				<Button
+					:disabled="mutation.isPending.value"
+					@click="mutation.mutate({ id: pack.id, enabled: !pack.enabled })"
+					>{{ formatMessage(pack.enabled ? messages.disable : messages.enable) }}
+				</Button>
+				<Button
+					type="colored"
+					color="red"
+					:disabled="mutation.isPending.value"
+					@click="mutation.mutate({ id: pack.id, remove: true })"
+					>{{ formatMessage(messages.remove) }}
+				</Button>
+			</div>
+		</div>
+		<p v-else class="m-0 text-[var(--color-text-tertiary)]">{{ formatMessage(messages.empty) }}</p>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/command-history-modal.vue

@@ -0,0 +1,93 @@
+<script setup lang="ts">
+import { SaveIcon, XIcon } from '@modrinth/assets'
+import {
+	Button,
+	commonMessages,
+	defineMessages,
+	injectNotificationManager,
+	NewModal,
+	useVIntl,
+} from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { nextTick, ref } from 'vue'
+
+import StudioEditor from '@/components/instance/studio/StudioEditor.vue'
+import { set_command_history } from '@/helpers/instance'
+import { commandHistoryQueryOptions, syncedOptionsKeys } from '@/helpers/synced-options'
+
+const { formatMessage } = useVIntl()
+const { handleError } = injectNotificationManager()
+const queryClient = useQueryClient()
+const modal = ref<InstanceType<typeof NewModal> | null>(null)
+const commandHistory = ref('')
+const historyQuery = useQuery({ ...commandHistoryQueryOptions(), enabled: false })
+const saveMutation = useMutation({
+	mutationFn: set_command_history,
+	onSuccess: (history) => {
+		queryClient.setQueryData(syncedOptionsKeys.commandHistory, history)
+	},
+	onError: handleError,
+})
+
+const messages = defineMessages({
+	commandHistoryEditorTitle: {
+		id: 'app.settings.synced-options.command-history.editor-title',
+		defaultMessage: 'Edit command history',
+	},
+})
+
+async function show() {
+	const result = await historyQuery.refetch()
+	if (result.isError) {
+		handleError(result.error)
+		return
+	}
+	if (!result.isSuccess) return
+	commandHistory.value = result.data
+	modal.value?.show()
+}
+
+async function saveCommandHistory() {
+	if (saveMutation.isPending.value) return
+	try {
+		await saveMutation.mutateAsync(commandHistory.value)
+		await nextTick()
+		modal.value?.hide()
+	} catch {
+		return
+	}
+}
+
+defineExpose({ show })
+</script>
+
+<template>
+	<NewModal
+		ref="modal"
+		:header="formatMessage(messages.commandHistoryEditorTitle)"
+		:disable-close="saveMutation.isPending.value"
+		no-padding
+		actions-divider
+		max-width="700px"
+		width="700px"
+	>
+		<StudioEditor
+			v-model:content="commandHistory"
+			file-path="command_history.txt"
+			language="plaintext"
+			class="h-[420px] text-sm"
+		/>
+		<template #actions>
+			<div class="flex justify-end gap-2">
+				<Button type="outlined" @click="modal?.hide()">
+					<XIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.cancelButton) }}
+				</Button>
+				<Button type="colored" :loading="saveMutation.isPending.value" @click="saveCommandHistory">
+					<SaveIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.saveButton) }}
+				</Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/servers-modal.vue

@@ -0,0 +1,476 @@
+<script setup lang="ts">
+import {
+	ClipboardCopyIcon,
+	EditIcon,
+	MoreVerticalIcon,
+	NoSignalIcon,
+	RefreshCwIcon,
+	SaveIcon,
+	SearchIcon,
+	SignalIcon,
+	TrashIcon,
+	XIcon,
+} from '@modrinth/assets'
+import {
+	Avatar,
+	Button,
+	type ButtonMenuOption,
+	commonMessages,
+	defineMessages,
+	FilterPills,
+	injectNotificationManager,
+	NewModal,
+	StyledInput,
+	Table,
+	type TableColumn,
+	TeleportOverflowMenu,
+	useVIntl,
+} from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, nextTick, ref } from 'vue'
+
+import { remove_synced_server, type SyncedServer, update_synced_server } from '@/helpers/instance'
+import { syncedOptionsKeys, syncedServersQueryOptions } from '@/helpers/synced-options'
+import { copyToClipboard } from '@/helpers/utils'
+import {
+	refreshServerData,
+	refreshServers,
+	type ServerData,
+	type ServerWorld,
+} from '@/helpers/worlds'
+
+const { handleError } = injectNotificationManager()
+const { formatMessage } = useVIntl()
+const queryClient = useQueryClient()
+const serverEditorModal = ref<InstanceType<typeof NewModal> | null>(null)
+const editServerModal = ref<InstanceType<typeof NewModal> | null>(null)
+const editedServer = ref<SyncedServer | null>(null)
+const serversQuery = useQuery(syncedServersQueryOptions())
+const syncedServers = computed(() => serversQuery.data.value ?? [])
+const serverData = ref<Record<string, ServerData>>({})
+const serverSearch = ref('')
+const selectedServerFilters = ref<string[]>([])
+
+const messages = defineMessages({
+	serverEditorTitle: {
+		id: 'app.settings.synced-options.multiplayer-servers.editor-title',
+		defaultMessage: 'Edit synced servers',
+	},
+	editServerTitle: {
+		id: 'instance.edit-server.title',
+		defaultMessage: 'Edit server',
+	},
+	serverName: {
+		id: 'app.settings.synced-options.multiplayer-servers.name',
+		defaultMessage: 'Server name',
+	},
+	serverAddress: {
+		id: 'app.settings.synced-options.multiplayer-servers.address',
+		defaultMessage: 'Server address',
+	},
+	searchServers: {
+		id: 'app.settings.synced-options.multiplayer-servers.search',
+		defaultMessage:
+			'Search {count, number} {count, plural, one {synced server} other {synced servers}}...',
+	},
+	serverStatus: {
+		id: 'app.settings.synced-options.multiplayer-servers.status',
+		defaultMessage: 'Status',
+	},
+	onlineFilter: {
+		id: 'app.settings.synced-options.multiplayer-servers.filter-online',
+		defaultMessage: 'Online',
+	},
+	offlineFilter: {
+		id: 'app.settings.synced-options.multiplayer-servers.filter-offline',
+		defaultMessage: 'Offline',
+	},
+	playersOnline: {
+		id: 'app.settings.synced-options.multiplayer-servers.players-online',
+		defaultMessage: '{count, number} online',
+	},
+	noMatchingServers: {
+		id: 'app.settings.synced-options.multiplayer-servers.no-results',
+		defaultMessage: 'No synced servers match your search or filters.',
+	},
+	serverCount: {
+		id: 'app.settings.synced-options.multiplayer-servers.count',
+		defaultMessage: '{count, plural, one {# server} other {# servers}}',
+	},
+	moreServerOptions: {
+		id: 'app.settings.synced-options.multiplayer-servers.more-options',
+		defaultMessage: 'More server options',
+	},
+	copyServerAddress: {
+		id: 'app.settings.synced-options.multiplayer-servers.copy-address',
+		defaultMessage: 'Copy address',
+	},
+	noSyncedServers: {
+		id: 'app.settings.synced-options.multiplayer-servers.empty',
+		defaultMessage: 'No user-added servers are currently synced.',
+	},
+})
+
+const serverWorlds = computed<ServerWorld[]>(() =>
+	syncedServers.value.map((server, index) => ({
+		name: server.name,
+		type: 'server',
+		index,
+		server_id: server.id,
+		address: server.address,
+		pack_status:
+			server.accept_textures === true
+				? 'enabled'
+				: server.accept_textures === false
+					? 'disabled'
+					: 'prompt',
+		display_status: 'normal',
+	})),
+)
+
+type SyncedServerTableColumn = 'server' | 'status' | 'version' | 'actions'
+type SyncedServerTableRow = SyncedServer & {
+	server: string
+	status: 'online' | 'offline'
+	version: string
+	actions: null
+}
+
+const syncedServerColumns = computed<TableColumn<SyncedServerTableColumn>[]>(() => [
+	{
+		key: 'server',
+		label: formatMessage(commonMessages.serverLabel),
+		width: '45%',
+		cellClass: '!h-16',
+	},
+	{
+		key: 'status',
+		label: formatMessage(messages.serverStatus),
+		width: '25%',
+		cellClass: '!h-16',
+	},
+	{
+		key: 'version',
+		label: formatMessage(commonMessages.versionLabel),
+		width: '22%',
+		cellClass: '!h-16',
+	},
+	{
+		key: 'actions',
+		label: formatMessage(commonMessages.actionsLabel),
+		align: 'right',
+		width: '6rem',
+		cellClass: '!h-16',
+	},
+])
+
+const syncedServerFilterOptions = computed(() => [
+	{ id: 'online', label: formatMessage(messages.onlineFilter) },
+	{ id: 'offline', label: formatMessage(messages.offlineFilter) },
+])
+
+const syncedServerRows = computed<SyncedServerTableRow[]>(() =>
+	syncedServers.value.map((server) => ({
+		...server,
+		server: server.name,
+		status: serverData.value[server.address]?.status ? 'online' : 'offline',
+		version: serverData.value[server.address]?.status?.version?.name ?? '',
+		actions: null,
+	})),
+)
+
+const statusFilteredSyncedServerRows = computed(() => {
+	if (selectedServerFilters.value.length === 0) return syncedServerRows.value
+	return syncedServerRows.value.filter((server) =>
+		selectedServerFilters.value.includes(server.status),
+	)
+})
+
+const filteredSyncedServerRows = computed(() => {
+	const search = serverSearch.value.trim().toLocaleLowerCase()
+	if (!search) return statusFilteredSyncedServerRows.value
+	return statusFilteredSyncedServerRows.value.filter(
+		(server) =>
+			server.name.toLocaleLowerCase().includes(search) ||
+			server.address.toLocaleLowerCase().includes(search),
+	)
+})
+
+const refreshMutation = useMutation({
+	mutationFn: () => refreshServers(serverWorlds.value, serverData.value, null),
+	onError: handleError,
+})
+const refreshingAllSyncedServers = refreshMutation.isPending
+const saveMutation = useMutation({
+	mutationFn: update_synced_server,
+	onSuccess: async (_, server) => {
+		queryClient.setQueryData<SyncedServer[]>(syncedOptionsKeys.servers, (servers) =>
+			servers?.map((current) => (current.id === server.id ? { ...server } : current)),
+		)
+		await queryClient.invalidateQueries({ queryKey: ['worlds'] })
+		void refreshSyncedServer(server.address).catch(handleError)
+	},
+	onError: handleError,
+})
+const removeMutation = useMutation({
+	mutationFn: remove_synced_server,
+	onSuccess: async (_, serverId) => {
+		queryClient.setQueryData<SyncedServer[]>(syncedOptionsKeys.servers, (servers) =>
+			servers?.filter((server) => server.id !== serverId),
+		)
+		await queryClient.invalidateQueries({ queryKey: ['worlds'] })
+	},
+	onError: handleError,
+})
+
+async function show() {
+	const result = await serversQuery.refetch()
+	if (result.isError) {
+		handleError(result.error)
+		return
+	}
+	serverSearch.value = ''
+	selectedServerFilters.value = []
+	serverData.value = {}
+	serverEditorModal.value?.show()
+	refreshAllSyncedServers()
+}
+
+function openSyncedServerEditor(server: SyncedServer) {
+	editedServer.value = { ...server }
+	editServerModal.value?.show()
+}
+
+async function saveSyncedServer() {
+	if (!editedServer.value || saveMutation.isPending.value) return
+	try {
+		await saveMutation.mutateAsync({ ...editedServer.value })
+		await nextTick()
+		editServerModal.value?.hide()
+	} catch {
+		return
+	}
+}
+
+async function refreshSyncedServer(address: string) {
+	serverData.value[address] ??= { refreshing: true }
+	await refreshServerData(serverData.value[address], null, address)
+}
+
+function refreshAllSyncedServers() {
+	if (!refreshingAllSyncedServers.value) refreshMutation.mutate()
+}
+
+function syncedServerMenuOptions(server: SyncedServer): ButtonMenuOption[] {
+	return [
+		{
+			id: 'refresh',
+			label: formatMessage(commonMessages.refreshButton),
+			icon: RefreshCwIcon,
+			action: () => refreshSyncedServer(server.address).catch(handleError),
+		},
+		{
+			id: 'copy-address',
+			label: formatMessage(messages.copyServerAddress),
+			icon: ClipboardCopyIcon,
+			action: () => copyToClipboard(server.address),
+		},
+		{
+			id: 'edit',
+			label: formatMessage(commonMessages.editButton),
+			icon: EditIcon,
+			action: () => openSyncedServerEditor(server),
+		},
+		{ type: 'divider' },
+		{
+			id: 'remove',
+			label: formatMessage(commonMessages.removeButton),
+			icon: TrashIcon,
+			tone: 'red',
+			disabled: removeMutation.isPending.value,
+			action: () => removeMutation.mutate(server.id),
+		},
+	]
+}
+
+defineExpose({ show })
+</script>
+
+<template>
+	<NewModal
+		ref="serverEditorModal"
+		:header="formatMessage(messages.serverEditorTitle)"
+		no-padding
+		max-width="min(928px, calc(100vw - 2rem))"
+		width="min(928px, calc(100vw - 2rem))"
+	>
+		<div class="flex max-h-[min(600px,calc(95vh-10rem))] flex-col">
+			<div
+				class="flex shrink-0 flex-col gap-4 border-0 border-b border-solid border-surface-4 px-6 py-4"
+			>
+				<StyledInput
+					v-model="serverSearch"
+					:icon="SearchIcon"
+					type="search"
+					autocomplete="off"
+					:spellcheck="false"
+					:placeholder="formatMessage(messages.searchServers, { count: syncedServers.length })"
+					size="medium"
+					:aria-label="formatMessage(messages.searchServers, { count: syncedServers.length })"
+					:clear-label="formatMessage(commonMessages.clearButton)"
+					clearable
+				/>
+
+				<div class="flex flex-wrap items-center justify-between gap-3">
+					<FilterPills v-model="selectedServerFilters" :options="syncedServerFilterOptions">
+						<template #all>
+							{{ formatMessage(commonMessages.allProjectType) }}
+						</template>
+					</FilterPills>
+					<Button
+						type="quiet"
+						:disabled="refreshingAllSyncedServers || syncedServers.length === 0"
+						interaction="none"
+						@click="refreshAllSyncedServers"
+					>
+						<RefreshCwIcon
+							:class="{ 'animate-spin': refreshingAllSyncedServers }"
+							aria-hidden="true"
+						/>
+						{{ formatMessage(commonMessages.refreshButton) }}
+					</Button>
+				</div>
+			</div>
+
+			<div class="flex min-h-0 flex-1 flex-col overflow-hidden">
+				<div
+					v-if="syncedServers.length === 0"
+					class="flex flex-1 items-center justify-center p-8 text-center text-[var(--color-text-tertiary)]"
+				>
+					{{ formatMessage(messages.noSyncedServers) }}
+				</div>
+				<div
+					v-else-if="filteredSyncedServerRows.length === 0"
+					class="flex flex-1 items-center justify-center p-8 text-center text-[var(--color-text-tertiary)]"
+				>
+					{{ formatMessage(messages.noMatchingServers) }}
+				</div>
+				<div v-else class="min-h-0 flex-1 overflow-y-auto">
+					<Table
+						:columns="syncedServerColumns"
+						:data="filteredSyncedServerRows"
+						row-key="id"
+						table-min-width="44rem"
+						class="!rounded-none !border-0"
+					>
+						<template #cell-server="{ row }">
+							<div class="flex min-w-0 items-center gap-3">
+								<Avatar
+									:src="serverData[row.address]?.status?.favicon"
+									:alt="row.name"
+									:tint-by="row.address"
+									size="32px"
+									no-shadow
+									class="shrink-0 !rounded-lg"
+								/>
+								<div class="flex min-w-0 flex-col">
+									<span class="truncate font-semibold text-[var(--color-text-primary)]">{{
+										row.name
+									}}</span>
+									<span class="truncate text-sm text-[var(--color-text-tertiary)]">{{
+										row.address
+									}}</span>
+								</div>
+							</div>
+						</template>
+						<template #cell-status="{ row }">
+							<span class="inline-flex items-center gap-1.5 font-medium">
+								<RefreshCwIcon
+									v-if="serverData[row.address]?.refreshing"
+									class="size-4 shrink-0 animate-spin"
+									aria-hidden="true"
+								/>
+								<SignalIcon
+									v-else-if="serverData[row.address]?.status"
+									class="size-4 shrink-0 text-green"
+									aria-hidden="true"
+								/>
+								<NoSignalIcon v-else class="size-4 shrink-0" aria-hidden="true" />
+								<template v-if="serverData[row.address]?.refreshing">
+									{{ formatMessage(commonMessages.loadingLabel) }}
+								</template>
+								<template v-else-if="serverData[row.address]?.status">
+									{{
+										formatMessage(messages.playersOnline, {
+											count: serverData[row.address]?.status?.players?.online ?? 0,
+										})
+									}}
+								</template>
+								<template v-else>{{ formatMessage(messages.offlineFilter) }}</template>
+							</span>
+						</template>
+						<template #cell-version="{ row }">
+							<span class="block truncate">{{ row.version || '—' }}</span>
+						</template>
+						<template #cell-actions="{ row }">
+							<div class="flex justify-end">
+								<TeleportOverflowMenu
+									type="quiet"
+									:label="formatMessage(messages.moreServerOptions)"
+									:options="syncedServerMenuOptions(row)"
+								>
+									<MoreVerticalIcon aria-hidden="true" />
+								</TeleportOverflowMenu>
+							</div>
+						</template>
+					</Table>
+				</div>
+			</div>
+
+			<div
+				class="flex shrink-0 items-center border-0 border-t border-solid border-surface-4 px-6 py-4"
+			>
+				<span class="font-medium text-[var(--color-text-default)]">
+					{{ formatMessage(messages.serverCount, { count: syncedServers.length }) }}
+				</span>
+			</div>
+		</div>
+	</NewModal>
+
+	<NewModal
+		ref="editServerModal"
+		:header="formatMessage(messages.editServerTitle)"
+		:disable-close="saveMutation.isPending.value"
+		max-width="500px"
+		width="500px"
+	>
+		<div v-if="editedServer" class="flex flex-col gap-4">
+			<label class="flex flex-col gap-2 font-semibold text-[var(--color-text-primary)]">
+				{{ formatMessage(messages.serverName) }}
+				<StyledInput v-model="editedServer.name" autocomplete="off" wrapper-class="w-full" />
+			</label>
+			<label class="flex flex-col gap-2 font-semibold text-[var(--color-text-primary)]">
+				{{ formatMessage(messages.serverAddress) }}
+				<StyledInput v-model="editedServer.address" autocomplete="off" wrapper-class="w-full" />
+			</label>
+		</div>
+		<template #actions>
+			<div class="flex justify-end gap-2">
+				<Button type="outlined" @click="editServerModal?.hide()">
+					<XIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.cancelButton) }}
+				</Button>
+				<Button
+					type="colored"
+					color="brand"
+					:disabled="!editedServer?.address"
+					:loading="saveMutation.isPending.value"
+					@click="saveSyncedServer"
+				>
+					<SaveIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.saveChangesButton) }}
+				</Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/helpers/game-options.ts

@@ -0,0 +1,244 @@
+import { queryOptions } from '@tanstack/vue-query'
+import { invoke } from '@tauri-apps/api/core'
+
+export type GameOptionCanonicalValue =
+	| { type: 'bool'; value: boolean }
+	| { type: 'integer'; value: number }
+	| { type: 'decimal'; value: string }
+	| { type: 'enum'; value: string }
+	| { type: 'text'; value: string }
+	| { type: 'string_list'; value: string[] }
+	| { type: 'key_binding'; value: string }
+	| { type: 'external_raw'; value: string }
+
+export type GameOptionValueState = 'canonical' | 'uniform_local' | 'mixed' | 'unset' | 'invalid'
+
+export type GameOptionCompatibilityStatus =
+	| 'ready'
+	| 'deferred'
+	| 'waiting_for_file'
+	| 'waiting_for_base'
+	| 'not_available'
+	| 'unsupported_value'
+	| 'unmappable'
+	| 'catalog_uncovered'
+	| 'controlled'
+	| 'degraded'
+
+export type GameOptionMappingKind = 'direct' | 'legacy' | 'migrated' | 'lossless' | 'lossy'
+
+export type GameOptionCompatibilityReason =
+	| 'launcher_controlled'
+	| 'catalog_uncovered'
+	| 'inspection_failed'
+	| 'waiting_for_options_file'
+	| 'unsupported_value'
+	| 'migrates_on_write'
+	| 'waiting_for_compatible_base'
+	| 'missing_setting'
+
+export type GameOptionCompatibilityBucket = {
+	instance_count: number
+	write_keys: string[]
+	eventual_keys: string[]
+	game_versions: string[]
+	status: GameOptionCompatibilityStatus
+	mapping?: GameOptionMappingKind | null
+	reason?: GameOptionCompatibilityReason | null
+}
+
+export type GameOptionCompatibilitySummary = {
+	total_participating: number
+	will_receive: number
+	write_now: number
+	left_local: number
+	buckets: GameOptionCompatibilityBucket[]
+}
+
+export type GameOptionEditorChoice = {
+	value: string
+}
+
+export type GameOptionEditor = {
+	type:
+		| 'bool'
+		| 'integer'
+		| 'decimal'
+		| 'enum'
+		| 'text'
+		| 'string_list'
+		| 'key_binding'
+		| 'external_raw'
+	min?: number | null
+	max?: number | null
+	step?: number | null
+	unit?: string | null
+	choices?: GameOptionEditorChoice[]
+}
+
+export type GameSettingCategory = {
+	id: string
+	is_custom?: boolean
+}
+
+export type GameOptionValidationError =
+	'missing_value' | 'no_compatible_instances' | 'invalid_value' | 'changed_since_opened'
+
+export type EditableGameSetting = {
+	option_id: string
+	category_id: string
+	kind: 'vanilla' | 'external'
+	raw_key?: string | null
+	sync_enabled: boolean
+	canonical_value?: GameOptionCanonicalValue | null
+	value_state: GameOptionValueState
+	option_revision: number
+	editor: GameOptionEditor
+	compatibility: GameOptionCompatibilitySummary
+	validation_error?: GameOptionValidationError | null
+	controlled?: boolean
+}
+
+export type GameSettingsEditorState = {
+	summary_revision: string
+	canonical_revision: number
+	catalog_revision: number
+	total_participating: number
+	categories: GameSettingCategory[]
+	settings: EditableGameSetting[]
+}
+
+export type GameSettingChange = {
+	option_id: string
+	base_option_revision: number
+	sync_enabled?: boolean
+	canonical_value?: GameOptionCanonicalValue | null
+}
+
+export type UpdateGameSettingsRequest = {
+	expected_summary_revision: string
+	expected_canonical_revision: number
+	expected_catalog_revision: number
+	changes: GameSettingChange[]
+}
+
+export type GameOptionsSourceCandidate = {
+	source_id: string
+	instance_id: string
+	name: string
+	icon_path?: string | null
+	game_version?: string | null
+	eligible: boolean
+	disabled_reason?: GameOptionsSourceDisabledReason | null
+	recognized_setting_count: number
+	custom_setting_count: number
+}
+
+export type GameOptionsSourceDisabledReason =
+	| 'installing_or_updating'
+	| 'unsupported_version'
+	| 'missing_options_file'
+	| 'no_syncable_settings'
+	| 'unreadable_options_file'
+
+export type SaveGameSettingsResult = {
+	state?: GameSettingsEditorState
+	applied: number
+	migrated: number
+	deferred: number
+	unsupported: number
+	failed: number
+	conflicts?: string[]
+}
+
+export type GameSettingLocaleLabel = {
+	label: string
+	choices: Record<string, string>
+	source?: GameSettingSource | null
+}
+
+export type GameSettingSource = {
+	instance_id: string
+	file_name: string
+	file_path: string
+	project: {
+		id: string
+		title: string
+		icon_url: string | null
+	} | null
+}
+
+export async function get_game_setting_locale_labels(
+	instanceId: string | undefined,
+	locale: string,
+	optionIds: string[],
+	refreshSources = false,
+): Promise<{ settings: Record<string, GameSettingLocaleLabel> }> {
+	return await invoke('plugin:instance|instance_get_game_setting_locale_labels', {
+		instanceId,
+		locale,
+		optionIds,
+		refreshSources,
+	})
+}
+
+export async function list_game_options_sync_sources(): Promise<GameOptionsSourceCandidate[]> {
+	return await invoke('plugin:instance|instance_list_game_options_sync_sources')
+}
+
+export async function get_synced_game_options_config(): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_get_synced_game_options_config')
+}
+
+export const gameSettingsKeys = {
+	synced: ['game-settings', 'synced'] as const,
+	local: (instanceId: string) => ['game-settings', 'local', instanceId] as const,
+}
+
+export function gameSettingsQueryOptions(instanceId?: string) {
+	return queryOptions({
+		queryKey: instanceId ? gameSettingsKeys.local(instanceId) : gameSettingsKeys.synced,
+		queryFn: () =>
+			instanceId ? get_local_game_options_config(instanceId) : get_synced_game_options_config(),
+		staleTime: 30_000,
+		retry: false,
+	})
+}
+
+export async function preview_synced_game_option_changes(
+	request: UpdateGameSettingsRequest,
+): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_preview_synced_game_option_changes', { request })
+}
+
+export async function save_synced_game_option_changes(
+	request: UpdateGameSettingsRequest,
+): Promise<SaveGameSettingsResult> {
+	return await invoke('plugin:instance|instance_save_synced_game_option_changes', { request })
+}
+
+export async function get_local_game_options_config(
+	instanceId: string,
+): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_get_local_game_options_config', { instanceId })
+}
+
+export async function preview_local_game_option_changes(
+	instanceId: string,
+	request: UpdateGameSettingsRequest,
+): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_preview_local_game_option_changes', {
+		instanceId,
+		request,
+	})
+}
+
+export async function save_local_game_option_changes(
+	instanceId: string,
+	request: UpdateGameSettingsRequest,
+): Promise<SaveGameSettingsResult> {
+	return await invoke('plugin:instance|instance_save_local_game_option_changes', {
+		instanceId,
+		request,
+	})
+}

apps/app-frontend/src/helpers/instance.ts

@@ -108,6 +108,104 @@ export async function get_many(instanceIds: string[]): Promise<GameInstance[]> {
 	return await invoke('plugin:instance|instance_get_many', { instanceIds })
 }
 
+export function adaptContentItems(items: ContentItem[]): ContentItem[] {
+	return items.map((item) => {
+		const embeddedMetadata = item.embedded_metadata
+		if (!embeddedMetadata?.icon_path) return item
+		return {
+			...item,
+			embedded_metadata: {
+				...embeddedMetadata,
+				icon_url: convertFileSrc(embeddedMetadata.icon_path),
+			},
+		}
+	})
+}
+
+export type SyncedOption =
+	| 'game_options'
+	| 'command_history'
+	| 'multiplayer_servers'
+	| 'creative_hotbars'
+	| 'screenshots'
+	| 'resource_packs'
+	| 'data_packs'
+export type GlobalSyncedOptions = Record<SyncedOption, boolean>
+export type SyncedOptionCapability = {
+	option: SyncedOption
+	supported: boolean
+	disabled_reason: string | null
+}
+export type SyncedOptionJoinPreview = { action: string }
+export type SyncedOptionsOverview = {
+	global_options: GlobalSyncedOptions
+	capabilities: SyncedOptionCapability[]
+}
+export async function get_global_synced_options(): Promise<GlobalSyncedOptions> {
+	return await invoke('plugin:instance|instance_get_synced_options')
+}
+export async function get_initialized_synced_options(): Promise<GlobalSyncedOptions> {
+	return await invoke('plugin:instance|instance_get_initialized_synced_options')
+}
+/**
+ * Every synced option is currently available on every instance. The parameter
+ * stays so callers keep passing the option they are asking about, which is what
+ * a real implementation will need.
+ */
+export function isSyncedOptionAvailable(_option: SyncedOption): boolean {
+	return true
+}
+export async function set_global_synced_option(
+	option: SyncedOption,
+	enabled: boolean,
+	baseInstanceId?: string | null,
+): Promise<GlobalSyncedOptions> {
+	return await invoke('plugin:instance|instance_set_synced_option', {
+		option,
+		enabled,
+		baseInstanceId,
+	})
+}
+export async function set_instance_synced_option(
+	instanceId: string,
+	option: SyncedOption,
+	enabled: boolean,
+	resolution?: string | null,
+): Promise<GameInstance> {
+	return await invoke('plugin:instance|instance_set_instance_synced_option', {
+		instanceId,
+		option,
+		enabled,
+		resolution,
+	})
+}
+export async function get_synced_options_overview(
+	instanceId: string,
+): Promise<SyncedOptionsOverview> {
+	return await invoke('plugin:instance|instance_get_synced_options_overview', { instanceId })
+}
+export async function get_command_history(): Promise<string> {
+	return await invoke('plugin:instance|instance_get_synced_command_history')
+}
+export async function set_command_history(contents: string): Promise<string> {
+	return await invoke('plugin:instance|instance_set_synced_command_history', { contents })
+}
+export type SyncedServer = {
+	id: string
+	name: string
+	address: string
+	accept_textures: boolean | null
+}
+export async function list_synced_servers(): Promise<SyncedServer[]> {
+	return await invoke('plugin:instance|instance_list_synced_servers')
+}
+export async function update_synced_server(server: SyncedServer): Promise<void> {
+	await invoke('plugin:instance|instance_update_synced_server', { server })
+}
+export async function remove_synced_server(id: string): Promise<void> {
+	await invoke('plugin:instance|instance_remove_synced_server', { id })
+}
+
 export async function get_projects(
 	instanceId: string,
 	cacheBehaviour?: CacheBehaviour,

apps/app-frontend/src/helpers/synced-options.ts

@@ -0,0 +1,61 @@
+import { queryOptions } from '@tanstack/vue-query'
+
+import { list_game_options_sync_sources } from './game-options'
+import {
+	get_command_history,
+	get_global_synced_options,
+	get_initialized_synced_options,
+	list_synced_servers,
+} from './instance'
+import type { GameInstance } from './types'
+
+export const syncedOptionsKeys = {
+	global: ['global-synced-options'] as const,
+	initialized: ['initialized-synced-options'] as const,
+	gameSources: ['game-options-sync-sources'] as const,
+	set: ['global-synced-options', 'set'] as const,
+	servers: ['synced-servers', 'list'] as const,
+	commandHistory: ['synced-options', 'command-history'] as const,
+}
+
+export function globalSyncedOptionsQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.global,
+		queryFn: get_global_synced_options,
+	})
+}
+
+export function initializedSyncedOptionsQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.initialized,
+		queryFn: get_initialized_synced_options,
+	})
+}
+
+export function gameOptionsSyncSourcesQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.gameSources,
+		queryFn: list_game_options_sync_sources,
+		staleTime: 0,
+	})
+}
+
+export function syncedServersQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.servers,
+		queryFn: list_synced_servers,
+	})
+}
+
+export function commandHistoryQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.commandHistory,
+		queryFn: get_command_history,
+	})
+}
+
+export function canSourceMultiplayerServers(instance: GameInstance): boolean {
+	return !['server_project', 'server_project_modpack', 'modrinth_hosting'].includes(
+		instance.link?.type ?? '',
+	)
+}

apps/app-frontend/src/helpers/synced-packs.ts

@@ -0,0 +1,83 @@
+import type { ContentItem } from '@modrinth/ui'
+import { queryOptions } from '@tanstack/vue-query'
+import { invoke } from '@tauri-apps/api/core'
+
+import { adaptContentItems, isSyncedOptionAvailable } from './instance'
+
+export type SyncedPackType = 'resourcepack' | 'datapack'
+export type SyncedPackAction = 'enable' | 'disable'
+
+export type DesyncServerMode = 'keep_in_other_instances' | 'remove_from_other_instances'
+
+export function isSyncedPackTypeAvailable(projectType: ContentItem['project_type']): boolean {
+	return (
+		['resourcepack', 'datapack'].includes(projectType) &&
+		isSyncedOptionAvailable(projectType === 'resourcepack' ? 'resource_packs' : 'data_packs')
+	)
+}
+
+export interface PackSyncPreview {
+	pack: ContentItem
+	instances: {
+		instance_id: string
+		name: string
+		game_version: string
+		compatible: boolean
+		participating: boolean
+	}[]
+}
+
+export const syncedPackKeys = {
+	all: ['synced-packs'] as const,
+	list: (type: SyncedPackType) => ['synced-packs', 'list', type] as const,
+}
+
+export function syncedPackQueryOptions(type: SyncedPackType) {
+	return queryOptions({
+		queryKey: syncedPackKeys.list(type),
+		queryFn: () => list_synced_packs(type),
+		enabled: isSyncedPackTypeAvailable(type),
+	})
+}
+
+export async function list_synced_packs(projectType: SyncedPackType): Promise<ContentItem[]> {
+	const items = await invoke<ContentItem[]>('plugin:instance|instance_list_synced_packs', {
+		projectType,
+	})
+	return adaptContentItems(items).map((item) => ({ ...item, external: !item.project }))
+}
+
+export function get_pack_sync_preview(
+	instanceId: string,
+	projectPath: string,
+): Promise<PackSyncPreview> {
+	return invoke('plugin:instance|instance_get_pack_sync_preview', { instanceId, projectPath })
+}
+
+export function sync_pack(instanceId: string, projectPath: string): Promise<void> {
+	return invoke('plugin:instance|instance_sync_pack', { instanceId, projectPath })
+}
+
+export function desync_pack(
+	instanceId: string,
+	packId: string,
+	mode: DesyncServerMode,
+): Promise<void> {
+	return invoke('plugin:instance|instance_desync_pack', { instanceId, packId, mode })
+}
+
+export function upload_synced_pack(
+	path: string,
+	projectType: SyncedPackType,
+	gameVersions: string[],
+): Promise<void> {
+	return invoke('plugin:instance|instance_upload_synced_pack', { path, projectType, gameVersions })
+}
+
+export function set_synced_pack_enabled(packId: string, enabled: boolean): Promise<void> {
+	return invoke('plugin:instance|instance_set_synced_pack_enabled', { packId, enabled })
+}
+
+export function remove_synced_pack(packId: string): Promise<void> {
+	return invoke('plugin:instance|instance_remove_synced_pack', { packId })
+}

apps/app-frontend/src/locales/en-US/index.json

@@ -10165,5 +10165,191 @@
   },
   "settings.backups.repository.usage-description": {
     "message": "{stored} stored for {logical} of backup data across {count, plural, one {# snapshot} other {# snapshots}}."
+  },
+  "app.settings.synced-options.choose-sync-source.command-history-description": {
+    "message": "Choose which instance to copy your command history from. This history is only used for the initial sync, and you can edit it from any instance afterward."
+  },
+  "app.settings.synced-options.choose-sync-source.command-history-title": {
+    "message": "Choose command history source"
+  },
+  "app.settings.synced-options.choose-sync-source.creative-hotbars-description": {
+    "message": "Choose which instance to copy your saved creative hotbars from. These hotbars are only used for the initial sync, and you can edit them from any instance afterward."
+  },
+  "app.settings.synced-options.choose-sync-source.creative-hotbars-title": {
+    "message": "Choose creative hotbars source"
+  },
+  "app.settings.synced-options.choose-sync-source.data-packs-title": {
+    "message": "Choose data packs source"
+  },
+  "app.settings.synced-options.choose-sync-source.game-settings-description": {
+    "message": "Choose which instance to copy your game settings from. These settings are only used for the initial sync, and you can edit them from any instance afterward."
+  },
+  "app.settings.synced-options.choose-sync-source.game-settings-title": {
+    "message": "Choose game settings source"
+  },
+  "app.settings.synced-options.choose-sync-source.ineligible": {
+    "message": "You cannot choose this instance as a sync source"
+  },
+  "app.settings.synced-options.choose-sync-source.load-error": {
+    "message": "Could not load sync sources. Please try again."
+  },
+  "app.settings.synced-options.choose-sync-source.multiplayer-servers-description": {
+    "message": "Choose which instance to copy your multiplayer servers from. These servers are only used for the initial sync, and you can edit them from any instance afterward."
+  },
+  "app.settings.synced-options.choose-sync-source.multiplayer-servers-title": {
+    "message": "Choose multiplayer servers source"
+  },
+  "app.settings.synced-options.choose-sync-source.no-instances-found": {
+    "message": "No instances found"
+  },
+  "app.settings.synced-options.choose-sync-source.resource-packs-title": {
+    "message": "Choose resource packs source"
+  },
+  "app.settings.synced-options.choose-sync-source.retry": {
+    "message": "Try again"
+  },
+  "app.settings.synced-options.choose-sync-source.search-placeholder": {
+    "message": "Search instance"
+  },
+  "app.settings.synced-options.choose-sync-source.sync": {
+    "message": "Sync"
+  },
+  "app.settings.synced-options.command-history": {
+    "message": "Sync command history"
+  },
+  "app.settings.synced-options.command-history.description": {
+    "message": "Use the same command history across your instances."
+  },
+  "app.settings.synced-options.command-history.editor-title": {
+    "message": "Edit command history"
+  },
+  "app.settings.synced-options.creative-hotbars": {
+    "message": "Sync saved creative hotbars"
+  },
+  "app.settings.synced-options.creative-hotbars.description": {
+    "message": "Use the same saved creative hotbars across your instances."
+  },
+  "app.settings.synced-options.data-packs": {
+    "message": "Sync data packs"
+  },
+  "app.settings.synced-options.data-packs.description": {
+    "message": "Use the same datapacks across your instances"
+  },
+  "app.settings.synced-options.data-packs.none-synced-yet": {
+    "message": "You haven't synced any data packs yet"
+  },
+  "app.settings.synced-options.edit.no-instances": {
+    "message": "Add an instance before editing synced data."
+  },
+  "app.settings.synced-options.edit.no-synced-data": {
+    "message": "Choose a sync source before editing this setting."
+  },
+  "app.settings.synced-options.game-settings": {
+    "message": "Sync game options"
+  },
+  "app.settings.synced-options.game-settings.button": {
+    "message": "Edit game settings"
+  },
+  "app.settings.synced-options.game-settings.description": {
+    "message": "Use the same game options across your instances."
+  },
+  "app.settings.synced-options.game-settings.disabled-tooltip": {
+    "message": "Enable game settings sync before choosing individual settings."
+  },
+  "app.settings.synced-options.game-settings.no-options-to-edit": {
+    "message": "You haven't got any options yet to edit"
+  },
+  "app.settings.synced-options.multiplayer-servers": {
+    "message": "Sync multiplayer servers"
+  },
+  "app.settings.synced-options.multiplayer-servers.address": {
+    "message": "Server address"
+  },
+  "app.settings.synced-options.multiplayer-servers.copy-address": {
+    "message": "Copy address"
+  },
+  "app.settings.synced-options.multiplayer-servers.count": {
+    "message": "{count, plural, one {# server} other {# servers}}"
+  },
+  "app.settings.synced-options.multiplayer-servers.description": {
+    "message": "Use the same multiplayer servers across your instances."
+  },
+  "app.settings.synced-options.multiplayer-servers.editor-title": {
+    "message": "Edit synced servers"
+  },
+  "app.settings.synced-options.multiplayer-servers.empty": {
+    "message": "No user-added servers are currently synced."
+  },
+  "app.settings.synced-options.multiplayer-servers.filter-offline": {
+    "message": "Offline"
+  },
+  "app.settings.synced-options.multiplayer-servers.filter-online": {
+    "message": "Online"
+  },
+  "app.settings.synced-options.multiplayer-servers.more-options": {
+    "message": "More server options"
+  },
+  "app.settings.synced-options.multiplayer-servers.name": {
+    "message": "Server name"
+  },
+  "app.settings.synced-options.multiplayer-servers.no-results": {
+    "message": "No synced servers match your search or filters."
+  },
+  "app.settings.synced-options.multiplayer-servers.none-synced-yet": {
+    "message": "You haven't synced any servers yet"
+  },
+  "app.settings.synced-options.multiplayer-servers.players-online": {
+    "message": "{count, number} online"
+  },
+  "app.settings.synced-options.multiplayer-servers.search": {
+    "message": "Search {count, number} {count, plural, one {synced server} other {synced servers}}..."
+  },
+  "app.settings.synced-options.multiplayer-servers.status": {
+    "message": "Status"
+  },
+  "app.settings.synced-options.packs.disabled": {
+    "message": "Enable syncing before editing shared packs."
+  },
+  "app.settings.synced-options.resource-packs": {
+    "message": "Sync resource packs"
+  },
+  "app.settings.synced-options.resource-packs.description": {
+    "message": "Use the same resource packs across your instances."
+  },
+  "app.settings.synced-options.resource-packs.none-synced-yet": {
+    "message": "You haven't synced any resource packs yet"
+  },
+  "app.settings.synced-options.title": {
+    "message": "Options synced across all instances"
+  },
+  "app.settings.synced-packs.data-packs": {
+    "message": "Data packs"
+  },
+  "app.settings.synced-packs.disable": {
+    "message": "Disable"
+  },
+  "app.settings.synced-packs.empty": {
+    "message": "No synced packs"
+  },
+  "app.settings.synced-packs.enable": {
+    "message": "Enable"
+  },
+  "app.settings.synced-packs.remove": {
+    "message": "Remove"
+  },
+  "app.settings.synced-packs.resource-packs": {
+    "message": "Resource packs"
+  },
+  "app.sync-instances-update.choose-source.data-packs": {
+    "message": "Choose which instance to copy your data packs from. These packs are only used for the initial sync, and you can edit them from any instance afterward."
+  },
+  "app.sync-instances-update.choose-source.resource-packs": {
+    "message": "Choose which instance to copy your resource packs from. These packs are only used for the initial sync, and you can edit them from any instance afterward."
+  },
+  "instance.settings.tabs.backups": {
+    "message": "Backups"
+  },
+  "instance.settings.tabs.sync": {
+    "message": "Synchronization"
   }
 }

apps/app-frontend/src/locales/zh-CN/index.json

@@ -10929,5 +10929,67 @@
   },
   "settings.backups.repository.usage-description": {
     "message": "实际存储 {stored}，对应 {logical} 的备份数据，共 {count, plural, other {# 个快照}}。"
-  }
+  },
+	"app.settings.synced-options.choose-sync-source.command-history-description": { "message": "选择要从哪个实例复制命令历史记录。这些记录仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.command-history-title": { "message": "选择命令历史记录来源" },
+	"app.settings.synced-options.choose-sync-source.creative-hotbars-description": { "message": "选择要从哪个实例复制保存的创造模式快捷栏。这些快捷栏仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.creative-hotbars-title": { "message": "选择创造模式快捷栏来源" },
+	"app.settings.synced-options.choose-sync-source.data-packs-title": { "message": "选择数据包来源" },
+	"app.settings.synced-options.choose-sync-source.game-settings-description": { "message": "选择要从哪个实例复制游戏设置。这些设置仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.game-settings-title": { "message": "选择游戏设置来源" },
+	"app.settings.synced-options.choose-sync-source.ineligible": { "message": "无法选择此实例作为同步来源" },
+	"app.settings.synced-options.choose-sync-source.load-error": { "message": "无法加载同步来源，请重试。" },
+	"app.settings.synced-options.choose-sync-source.multiplayer-servers-description": { "message": "选择要从哪个实例复制多人服务器列表。这些服务器仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.multiplayer-servers-title": { "message": "选择多人服务器来源" },
+	"app.settings.synced-options.choose-sync-source.no-instances-found": { "message": "没有找到实例" },
+	"app.settings.synced-options.choose-sync-source.resource-packs-title": { "message": "选择资源包来源" },
+	"app.settings.synced-options.choose-sync-source.retry": { "message": "重试" },
+	"app.settings.synced-options.choose-sync-source.search-placeholder": { "message": "搜索实例" },
+	"app.settings.synced-options.choose-sync-source.sync": { "message": "同步" },
+	"app.settings.synced-options.command-history": { "message": "同步命令记录" },
+	"app.settings.synced-options.command-history.description": { "message": "在不同的实例之间同步命令记录。" },
+	"app.settings.synced-options.command-history.editor-title": { "message": "编辑指令历史记录" },
+	"app.settings.synced-options.creative-hotbars": { "message": "同步保存的创造模式物品栏" },
+	"app.settings.synced-options.creative-hotbars.description": { "message": "在不同的实例之间同步创造模式物品栏。" },
+	"app.settings.synced-options.data-packs": { "message": "同步数据包" },
+	"app.settings.synced-options.data-packs.description": { "message": "在所有实例间使用相同的数据包" },
+	"app.settings.synced-options.data-packs.none-synced-yet": { "message": "尚未同步任何数据包" },
+	"app.settings.synced-options.edit.no-instances": { "message": "请先添加实例，再编辑同步数据。" },
+	"app.settings.synced-options.edit.no-synced-data": { "message": "请先选择同步来源，再编辑此设置。" },
+	"app.settings.synced-options.game-settings": { "message": "同步游戏设置" },
+	"app.settings.synced-options.game-settings.button": { "message": "编辑游戏设置" },
+	"app.settings.synced-options.game-settings.description": { "message": "在所有实例间使用相同的游戏设置。" },
+	"app.settings.synced-options.game-settings.disabled-tooltip": { "message": "请先启用游戏设置同步，再选择单个设置。" },
+	"app.settings.synced-options.game-settings.no-options-to-edit": { "message": "目前没有可编辑的设置" },
+	"app.settings.synced-options.multiplayer-servers": { "message": "同步多人模式服务器列表" },
+	"app.settings.synced-options.multiplayer-servers.address": { "message": "服务器地址" },
+	"app.settings.synced-options.multiplayer-servers.copy-address": { "message": "复制地址" },
+	"app.settings.synced-options.multiplayer-servers.count": { "message": "{count, number} 个服务器" },
+	"app.settings.synced-options.multiplayer-servers.description": { "message": "在不同的实例直接同步多人模式服务器列表。" },
+	"app.settings.synced-options.multiplayer-servers.editor-title": { "message": "编辑同步的服务器" },
+	"app.settings.synced-options.multiplayer-servers.empty": { "message": "当前未同步任何用户添加的服务器。" },
+	"app.settings.synced-options.multiplayer-servers.filter-offline": { "message": "离线" },
+	"app.settings.synced-options.multiplayer-servers.filter-online": { "message": "在线" },
+	"app.settings.synced-options.multiplayer-servers.more-options": { "message": "更多服务器选项" },
+	"app.settings.synced-options.multiplayer-servers.name": { "message": "服务器名称" },
+	"app.settings.synced-options.multiplayer-servers.no-results": { "message": "没有匹配搜索或筛选条件的已同步服务器。" },
+	"app.settings.synced-options.multiplayer-servers.none-synced-yet": { "message": "暂无已同步的服务器" },
+	"app.settings.synced-options.multiplayer-servers.players-online": { "message": "{count, number} 人在线" },
+	"app.settings.synced-options.multiplayer-servers.search": { "message": "搜索 {count, number} 个已同步服务器……" },
+	"app.settings.synced-options.multiplayer-servers.status": { "message": "状态" },
+	"app.settings.synced-options.packs.disabled": { "message": "请先启用同步，再编辑共享包。" },
+	"app.settings.synced-options.resource-packs": { "message": "同步资源包" },
+	"app.settings.synced-options.resource-packs.description": { "message": "在所有实例间使用相同的资源包" },
+	"app.settings.synced-options.resource-packs.none-synced-yet": { "message": "尚未同步任何资源包" },
+	"app.settings.synced-options.title": { "message": "跨所有实例同步的选项" },
+	"app.settings.synced-packs.data-packs": { "message": "数据包" },
+	"app.settings.synced-packs.disable": { "message": "禁用" },
+	"app.settings.synced-packs.empty": { "message": "没有已同步的包" },
+	"app.settings.synced-packs.enable": { "message": "启用" },
+	"app.settings.synced-packs.remove": { "message": "移除" },
+	"app.settings.synced-packs.resource-packs": { "message": "资源包" },
+	"app.sync-instances-update.choose-source.data-packs": { "message": "选择要从哪个实例复制数据包。这些包仅用于初始化同步，之后可从任意实例进行编辑。" },
+	"app.sync-instances-update.choose-source.resource-packs": { "message": "选择要从哪个实例复制资源包。这些包仅用于初始化同步，之后可从任意实例进行编辑。" },
+	"instance.settings.tabs.backups": { "message": "备份" },
+	"instance.settings.tabs.sync": { "message": "同步" }
 }

packages/ui/src/components/base/buttons/CheckCircleButton.vue

@@ -0,0 +1,53 @@
+<script setup lang="ts">
+import { CheckIcon } from '@modrinth/assets'
+import { computed, ref } from 'vue'
+
+import ButtonFrame from './ButtonFrame.vue'
+import type { ButtonNativeType } from './types'
+
+withDefaults(
+	defineProps<{
+		checked: boolean
+		disabled?: boolean
+		nativeType?: ButtonNativeType
+	}>(),
+	{
+		disabled: false,
+		nativeType: 'button',
+	},
+)
+
+const frame = ref<InstanceType<typeof ButtonFrame> | null>(null)
+const element = computed(() => frame.value?.element ?? null)
+
+defineExpose({ element })
+</script>
+
+<template>
+	<ButtonFrame
+		ref="frame"
+		as="button"
+		type="quiet"
+		size="lg"
+		interaction="none"
+		:disabled="disabled"
+		:native-type="nativeType"
+		role="radio"
+		:aria-checked="checked"
+		class="w-full !justify-between !gap-4 !whitespace-normal !border !border-solid !px-2 !text-left !transition-colors"
+		:class="
+			checked
+				? '!border-brand !bg-brand-highlight !text-[var(--color-text-primary)]'
+				: '!border-transparent !bg-transparent !text-[var(--color-text-primary)] enabled:hover:!bg-surface-3'
+		"
+	>
+		<span class="flex min-w-0 flex-1 items-center gap-2"><slot /></span>
+		<span
+			v-if="checked"
+			class="flex size-6 shrink-0 items-center justify-center rounded-full bg-brand text-brand-inverted"
+		>
+			<CheckIcon class="size-4" aria-hidden="true" />
+		</span>
+		<span v-else class="size-6 shrink-0 rounded-full border border-solid border-surface-5" />
+	</ButtonFrame>
+</template>

packages/ui/src/components/base/index.ts

@@ -11,6 +11,7 @@ export { default as BulletDivider } from './BulletDivider.vue'
 export { default as Button } from './Button.vue'
 export { default as NewButton } from './buttons/Button.vue'
 export { default as IconButton } from './buttons/IconButton.vue'
+export { default as CheckCircleButton } from './buttons/CheckCircleButton.vue'
 export type {
 	ButtonColor,
 	ButtonElementHandle,
@@ -78,6 +79,7 @@ export { default as NavTabs } from './NavTabs.vue'
 export { default as OptionGroup } from './OptionGroup.vue'
 export type { Option as OverflowMenuOption } from './OverflowMenu.vue'
 export { default as OverflowMenu } from './OverflowMenu.vue'
+export { default as TeleportOverflowMenu } from './TeleportOverflowMenu.vue'
 export { default as Page } from './Page.vue'
 export { default as Pagination } from './Pagination.vue'
 export { default as PopoutMenu } from './PopoutMenu.vue'