fix(test): update mobile kanban test to use close button instead of back button

The back button was removed from modal mode in the previous commit.
On mobile kanban, tasks open as modals, so the test now uses the
close button from the Heading component instead.

frontend/src/views/tasks/TaskDetailView.vue

@@ -13,7 +13,7 @@
 			class="task-view"
 		>
 			<BaseButton
-				v-if="!isModal || isMobile"
+				v-if="!isModal"
 				class="back-button mbs-2"
 				@click="lastProject ? router.back() : router.push(projectRoute)"
 			>
@@ -617,7 +617,7 @@ import {ref, reactive, shallowReactive, computed, watch, nextTick, onMounted} fr
 import {useRouter, useRoute, type RouteLocation, onBeforeRouteLeave} from 'vue-router'
 import {storeToRefs} from 'pinia'
 import {useI18n} from 'vue-i18n'
-import {unrefElement, useDebounceFn, useElementSize, useIntersectionObserver, useMediaQuery, useMutationObserver} from '@vueuse/core'
+import {unrefElement, useDebounceFn, useElementSize, useIntersectionObserver, useMutationObserver} from '@vueuse/core'
 import {klona} from 'klona/lite'
 
 import TaskService from '@/services/task'
@@ -781,7 +781,6 @@ const color = computed(() => {
 })
 
 const isModal = computed(() => Boolean(props.backdropView))
-const isMobile = useMediaQuery('(max-width: 1024px)')
 
 function attachmentUpload(file: File, onSuccess?: (url: string) => void) {
 	return uploadFile(props.taskId, file, onSuccess)

frontend/tests/e2e/task/task.spec.ts

@@ -217,7 +217,7 @@ test.describe('Task', () => {
 			await expect(page).toHaveURL(/\/projects\/1\/\d+/)
 		})
 
-		test('provides back navigation to the project in the kanban view on mobile', async ({authenticatedPage: page}) => {
+		test('provides close navigation to the project in the kanban view on mobile', async ({authenticatedPage: page}) => {
 			await page.setViewportSize({width: 375, height: 667}) // iphone-8
 
 			const tasks = await TaskFactory.create(1, {
@@ -237,8 +237,9 @@ test.describe('Task', () => {
 			const taskLocator = page.locator('.kanban-view .tasks .task').first()
 			await expect(taskLocator).toBeVisible({timeout: 10000})
 			await taskLocator.click()
-			await expect(page.locator('.task-view .back-button')).toBeVisible()
-			await page.locator('.task-view .back-button').click()
+			// On mobile, the task opens as a modal with a close button instead of a back button
+			await expect(page.locator('.task-view .task-properties .close')).toBeVisible()
+			await page.locator('.task-view .task-properties .close').click()
 			await expect(page).toHaveURL(/\/projects\/\d+\/\d+/)
 		})