fix: project middleware startLoading

apps/frontend/src/middleware/project.global.ts

@@ -1,6 +1,7 @@
 import { useGeneratedState } from '~/composables/generated'
 import { projectQueryOptions } from '~/composables/queries/project'
 import { useAppQueryClient } from '~/composables/query-client'
+import { createModrinthClient } from '~/helpers/api.ts'
 import { getProjectTypeForUrlShorthand } from '~/helpers/projects.js'
 import { useServerModrinthClient } from '~/server/utils/api-client'
 
@@ -18,9 +19,6 @@ const PROJECT_TYPES = [
 ]
 
 export default defineNuxtRouteMiddleware(async (to) => {
-	// Only run this middleware on the server - it relies on server-only runtime config
-	if (import.meta.client) return
-
 	const routeProjectParam = to.params.project
 	const projectId = Array.isArray(routeProjectParam) ? routeProjectParam[0] : routeProjectParam
 	const routeType = Array.isArray(to.params.type) ? to.params.type[0] : to.params.type
@@ -31,10 +29,11 @@ export default defineNuxtRouteMiddleware(async (to) => {
 	}
 
 	const queryClient = useAppQueryClient()
-	const authToken = useCookie('auth-token')
+	const client = await getProjectMiddlewareClient()
-	const client = useServerModrinthClient({ authToken: authToken.value || undefined })
 	const tags = useGeneratedState()
 
+	if (import.meta.client) startLoading()
+
 	try {
 		// Fetch v2 and v3 in parallel — cache both for the page's useQuery calls
 		const [project, projectV3] = await Promise.all([
@@ -48,9 +47,11 @@ export default defineNuxtRouteMiddleware(async (to) => {
 		// Cache by slug if we looked up by ID (or vice versa)
 		if (projectId !== project.slug) {
 			queryClient.setQueryData(['project', 'v2', project.slug], project)
+			queryClient.setQueryData(['project', 'v3', project.slug], projectV3)
 		}
 		if (projectId !== project.id) {
 			queryClient.setQueryData(['project', 'v2', project.id], project)
+			queryClient.setQueryData(['project', 'v3', project.id], projectV3)
 		}
 
 		const projectType = projectV3.minecraft_server != null ? 'server' : project.project_type
@@ -81,5 +82,23 @@ export default defineNuxtRouteMiddleware(async (to) => {
 		}
 	} catch {
 		// Let the page handle 404s and other errors
+	} finally {
+		if (import.meta.client) stopLoading()
 	}
 })
+
+async function getProjectMiddlewareClient() {
+	if (import.meta.server) {
+		const authToken = useCookie('auth-token')
+		return useServerModrinthClient({ authToken: authToken.value || undefined })
+	}
+
+	const auth = await useAuth()
+	const config = useRuntimeConfig()
+
+	return createModrinthClient(auth, {
+		apiBaseUrl: config.public.apiBaseUrl.replace('/v2/', '/'),
+		archonBaseUrl: config.public.pyroBaseUrl.replace('/v2/', '/'),
+		rateLimitKey: config.rateLimitKey,
+	})
+}

apps/frontend/src/pages/[type]/[project].vue

@@ -421,6 +421,18 @@
 				</template>
 			</NewModal>
 			<CollectionCreateModal ref="modal_collection" :project-ids="[project.id]" />
+			<div
+				v-if="projectInstallContext && !isSettings"
+				ref="stickyInstallHeaderRef"
+				class="sticky top-0 z-20 mx-auto max-w-[80rem] border-0 border-solid border-divider bg-surface-1 px-6 pt-4"
+				:class="[isInstallHeaderStuck ? 'border-t' : '']"
+			>
+				<BrowseInstallHeader :install-context="projectHeaderInstallContext" divider bottom-padding />
+			</div>
+			<SelectedProjectsFloatingBar
+				v-if="projectInstallContext && !isSettings"
+				:install-context="projectInstallContext"
+			/>
 			<div
 				class="new-page sidebar"
 				:class="{
@@ -435,7 +447,10 @@
 						!flags.alwaysShowChecklistAsPopup,
 				}"
 			>
-				<div class="normal-page__header relative my-4">
+				<div
+					class="normal-page__header relative mb-4"
+					:class="projectInstallContext && !isSettings ? 'mt-0' : 'mt-4'"
+				>
 					<div class="mb-6">
 						<ModerationProjectNags
 							v-if="
@@ -721,6 +736,7 @@ import {
 import {
 	Admonition,
 	Avatar,
+	BrowseInstallHeader,
 	ButtonStyled,
 	Checkbox,
 	commonMessages,
@@ -743,12 +759,14 @@ import {
 	ProjectSidebarTags,
 	provideProjectPageContext,
 	ScrollablePanel,
+	SelectedProjectsFloatingBar,
 	ServersPromo,
 	StyledInput,
 	useDebugLogger,
 	useFormatDateTime,
 	useFormatPrice,
 	useRelativeTime,
+	useStickyObserver,
 	useVIntl,
 } from '@modrinth/ui'
 import VersionSummary from '@modrinth/ui/src/components/version/VersionSummary.vue'
@@ -772,6 +790,7 @@ import { getSignInRouteObj } from '~/composables/auth.ts'
 import { saveFeatureFlags } from '~/composables/featureFlags.ts'
 import { STALE_TIME, STALE_TIME_LONG } from '~/composables/queries/project'
 import { versionQueryOptions } from '~/composables/queries/version'
+import { useServerInstallContent } from '~/composables/use-server-install-content'
 import { userCollectProject, userFollowProject } from '~/composables/user.js'
 import {
 	loadChecklistOpenState,
@@ -843,6 +862,11 @@ const versionFilter = ref('')
 
 const projectV3Loaded = computed(() => !projectV3Pending.value || projectV3.value != null)
 const isServerProject = computed(() => projectV3.value?.minecraft_server != null)
+const stickyInstallHeaderRef = ref(null)
+const { isStuck: isInstallHeaderStuck } = useStickyObserver(
+	stickyInstallHeaderRef,
+	'ProjectInstallHeader',
+)
 
 const projectEnvironmentModal = useTemplateRef('projectEnvironmentModal')
 const modalCollection = useTemplateRef('modal_collection')
@@ -987,6 +1011,10 @@ const messages = defineMessages({
 		id: 'project.navigation.changelog',
 		defaultMessage: 'Changelog',
 	},
+	backToDiscover: {
+		id: 'project.install-context.back-to-discover',
+		defaultMessage: 'Back to discover',
+	},
 	createNewCollection: {
 		id: 'project.collections.create-new',
 		defaultMessage: 'Create new collection',
@@ -1340,6 +1368,60 @@ const project = computed(() => {
 		),
 	}
 })
+const routeProjectType = computed(() =>
+	Array.isArray(route.params.type) ? route.params.type[0] : route.params.type,
+)
+const projectInstallType = computed(() => ({
+	id: project.value?.actualProjectType ?? routeProjectType.value,
+}))
+const serverInstallModalRef = ref(null)
+const serverInstallDebug = useDebugLogger('ProjectServerInstall')
+const { installContext: serverBrowseInstallContext } = useServerInstallContent({
+	projectType: projectInstallType,
+	onboardingModalRef: serverInstallModalRef,
+	debug: serverInstallDebug,
+})
+const projectDiscoverBackUrl = computed(() => {
+	const browsePath = route.query.b
+	if (typeof browsePath === 'string' && browsePath.startsWith('/discover/')) {
+		return browsePath
+	}
+
+	const discoverType =
+		routeProjectType.value === 'project'
+			? (project.value?.actualProjectType ?? project.value?.project_type ?? 'mod')
+			: (routeProjectType.value ?? project.value?.actualProjectType ?? 'mod')
+
+	return `/discover/${discoverType}s${getInstallContextQueryString([
+		'sid',
+		'wid',
+		'from',
+		'shi',
+	])}`
+})
+const projectInstallContext = computed(() => {
+	const context = serverBrowseInstallContext.value
+	if (!context) return null
+	return {
+		...context,
+		backUrl: projectDiscoverBackUrl.value,
+		backLabel: formatMessage(messages.backToDiscover),
+		discardSelectedAndBack: async () => {
+			await (context.clearSelected ?? context.clearQueued)?.()
+			await navigateTo(projectDiscoverBackUrl.value)
+		},
+	}
+})
+const projectHeaderInstallContext = computed(() => {
+	const context = projectInstallContext.value
+	if (!context) return null
+	return {
+		...context,
+		onBack: undefined,
+		selectedProjects: [],
+		isInstallingSelected: false,
+	}
+})
 
 // Use actual project ID for dependent queries (ensures cache consistency)
 const projectId = computed(() => projectRaw.value?.id)
@@ -2493,6 +2575,32 @@ function onVersionNavigate(url) {
 	})
 }
 
+const INSTALL_CONTEXT_QUERY_KEYS = ['sid', 'wid', 'from', 'shi', 'b']
+
+function getInstallContextQueryString(keys = INSTALL_CONTEXT_QUERY_KEYS) {
+	const params = new URLSearchParams()
+
+	for (const key of keys) {
+		const value = route.query[key]
+		if (Array.isArray(value)) {
+			for (const item of value) {
+				if (item != null) {
+					params.append(key, item)
+				}
+			}
+		} else if (value != null) {
+			params.append(key, value)
+		}
+	}
+
+	const queryString = params.toString()
+	return queryString ? `?${queryString}` : ''
+}
+
+function withInstallContextQuery(path) {
+	return `${path}${getInstallContextQueryString()}`
+}
+
 async function deleteVersion(id) {
 	if (!id) return
 
@@ -2517,16 +2625,16 @@ const navLinks = computed(() => {
 	return [
 		{
 			label: formatMessage(messages.descriptionTab),
-			href: projectUrl,
+			href: withInstallContextQuery(projectUrl),
 		},
 		{
 			label: formatMessage(messages.galleryTab),
-			href: `${projectUrl}/gallery`,
+			href: withInstallContextQuery(`${projectUrl}/gallery`),
 			shown: galleryCount > 0 || !!currentMember.value,
 		},
 		{
 			label: formatMessage(messages.changelogTab),
-			href: `${projectUrl}/changelog`,
+			href: withInstallContextQuery(`${projectUrl}/changelog`),
 			shown:
 				hasVersions.value &&
 				projectV3Loaded.value &&
@@ -2535,7 +2643,7 @@ const navLinks = computed(() => {
 		},
 		{
 			label: formatMessage(messages.versionsTab),
-			href: `${projectUrl}/versions`,
+			href: withInstallContextQuery(`${projectUrl}/versions`),
 			shown:
 				(hasVersions.value || !!currentMember.value) &&
 				projectV3Loaded.value &&
@@ -2545,7 +2653,7 @@ const navLinks = computed(() => {
 		},
 		{
 			label: formatMessage(messages.moderationTab),
-			href: `${projectUrl}/moderation`,
+			href: withInstallContextQuery(`${projectUrl}/moderation`),
 			shown: !!currentMember.value,
 		},
 	]

apps/frontend/src/pages/discover/[type]/index.vue

@@ -33,6 +33,7 @@ import { cycleValue } from '@modrinth/utils'
 import { useQueryClient } from '@tanstack/vue-query'
 import { useTimeoutFn } from '@vueuse/core'
 import { computed, ref, watch } from 'vue'
+import type { LocationQueryRaw } from 'vue-router'
 
 import LogoAnimated from '~/components/brand/LogoAnimated.vue'
 import AdPlaceholder from '~/components/ui/AdPlaceholder.vue'
@@ -219,6 +220,28 @@ function mapV3ProjectHit(hit: Labrinth.Search.v3.ResultSearchProject): DiscoverP
 	}
 }
 
+const hostingContextQuery = computed(() => {
+	const query: LocationQueryRaw = {}
+	const hasHostingContext = route.query.sid != null
+
+	for (const key of ['sid', 'wid', 'from', 'shi']) {
+		const value = route.query[key]
+		if (value != null) {
+			query[key] = value
+		}
+	}
+
+	if (hasHostingContext) {
+		query.b = route.fullPath
+	}
+
+	return Object.keys(query).length > 0 ? query : undefined
+})
+
+function withHostingContext(path: string) {
+	return hostingContextQuery.value ? { path, query: hostingContextQuery.value } : path
+}
+
 async function fetchSearch(requestParams: string) {
 	debug('search() called', {
 		requestParams: requestParams.substring(0, 100),
@@ -468,9 +491,11 @@ provideBrowseManager({
 	projectType: projectTypeId,
 	...searchState,
 	getProjectLink: (result: Labrinth.Search.v2.ResultSearchProject) =>
-		`/${projectType.value?.id ?? 'project'}/${result.slug ? result.slug : result.project_id}`,
+		withHostingContext(
+			`/${projectType.value?.id ?? 'project'}/${result.slug ? result.slug : result.project_id}`,
+		),
 	getServerProjectLink: (result: Labrinth.Search.v3.ResultSearchProject) =>
-		`/server/${result.slug ?? result.project_id}`,
+		withHostingContext(`/server/${result.slug ?? result.project_id}`),
 	selectableProjectTypes: computed(() => []),
 	showProjectTypeTabs: computed(() => false),
 	variant: 'web',