diff --git a/frontend/components/task/TaskBulkActions.vue b/frontend/components/task/TaskBulkActions.vue
new file mode 100644
index 0000000..f88ab80
--- /dev/null
+++ b/frontend/components/task/TaskBulkActions.vue
@@ -0,0 +1,131 @@
+<template>
+    <div class="flex items-center gap-2 rounded-[10px] bg-white px-3 py-2 shadow-sm">
+        <!-- Select all checkbox -->
+        <div
+            class="flex h-4 w-4 shrink-0 cursor-pointer items-center justify-center rounded border-2 transition-colors"
+            :class="allSelected ? 'border-primary-500 bg-primary-500' : someSelected ? 'border-primary-500 bg-primary-500' : 'border-neutral-300 hover:border-primary-400'"
+            @click="emit('toggle-all')"
+        >
+            <Icon v-if="allSelected" name="mdi:check" size="12" class="text-white" />
+            <Icon v-else-if="someSelected" name="mdi:minus" size="12" class="text-white" />
+        </div>
+        <span class="text-xs font-medium text-neutral-500">
+            {{ selectedCount }}/{{ totalCount }}
+        </span>
+
+        <div v-if="selectedCount > 0" class="ml-2 flex items-center gap-1">
+            <!-- Bulk status -->
+            <MalioSelect
+                :model-value="null"
+                :options="statusOptions"
+                label="Status"
+                empty-option-label="Status"
+                min-width="!w-32"
+                text-field="text-xs"
+                text-value="text-xs"
+                @update:model-value="(v: number | null) => v && emit('bulk-update', 'status', v)"
+            />
+            <!-- Bulk user -->
+            <MalioSelect
+                :model-value="null"
+                :options="userOptions"
+                label="User"
+                empty-option-label="User"
+                min-width="!w-32"
+                text-field="text-xs"
+                text-value="text-xs"
+                @update:model-value="(v: number | null) => v && emit('bulk-update', 'assignee', v)"
+            />
+            <!-- Bulk priority -->
+            <MalioSelect
+                :model-value="null"
+                :options="priorityOptions"
+                label="Priorité"
+                empty-option-label="Priorité"
+                min-width="!w-32"
+                text-field="text-xs"
+                text-value="text-xs"
+                @update:model-value="(v: number | null) => v && emit('bulk-update', 'priority', v)"
+            />
+            <!-- Bulk effort -->
+            <MalioSelect
+                :model-value="null"
+                :options="effortOptions"
+                label="Effort"
+                empty-option-label="Effort"
+                min-width="!w-32"
+                text-field="text-xs"
+                text-value="text-xs"
+                @update:model-value="(v: number | null) => v && emit('bulk-update', 'effort', v)"
+            />
+            <!-- Bulk group -->
+            <MalioSelect
+                v-if="groupOptions.length > 0"
+                :model-value="null"
+                :options="groupOptions"
+                label="Groupe"
+                empty-option-label="Groupe"
+                min-width="!w-32"
+                text-field="text-xs"
+                text-value="text-xs"
+                @update:model-value="(v: number | null) => v && emit('bulk-update', 'group', v)"
+            />
+
+            <!-- Delete -->
+            <button
+                class="flex h-9 w-9 shrink-0 items-center justify-center self-end rounded-md text-neutral-500 transition-colors hover:bg-red-50 hover:text-red-500"
+                title="Supprimer"
+                @click="emit('bulk-delete')"
+            >
+                <Icon name="mdi:delete-outline" size="22" />
+            </button>
+        </div>
+    </div>
+</template>
+
+<script setup lang="ts">
+import type { TaskStatus } from '~/services/dto/task-status'
+import type { TaskEffort } from '~/services/dto/task-effort'
+import type { TaskPriority } from '~/services/dto/task-priority'
+import type { TaskGroup } from '~/services/dto/task-group'
+import type { UserData } from '~/services/dto/user-data'
+
+const props = defineProps<{
+    selectedCount: number
+    totalCount: number
+    allSelected: boolean
+    someSelected: boolean
+    statuses: TaskStatus[]
+    users: UserData[]
+    priorities: TaskPriority[]
+    efforts: TaskEffort[]
+    groups: TaskGroup[]
+}>()
+
+const emit = defineEmits<{
+    (e: 'toggle-all'): void
+    (e: 'bulk-update', field: string, value: number): void
+    (e: 'bulk-archive'): void
+    (e: 'bulk-delete'): void
+}>()
+
+const statusOptions = computed(() =>
+    props.statuses.map(s => ({ label: s.label, value: s.id }))
+)
+
+const userOptions = computed(() =>
+    props.users.map(u => ({ label: u.username, value: u.id }))
+)
+
+const priorityOptions = computed(() =>
+    props.priorities.map(p => ({ label: p.label, value: p.id }))
+)
+
+const effortOptions = computed(() =>
+    props.efforts.map(e => ({ label: e.label, value: e.id }))
+)
+
+const groupOptions = computed(() =>
+    props.groups.filter(g => !g.archived).map(g => ({ label: g.title, value: g.id }))
+)
+</script>
diff --git a/frontend/components/task/TaskCard.vue b/frontend/components/task/TaskCard.vue
index 528cf2e..7f11c3b 100644
--- a/frontend/components/task/TaskCard.vue
+++ b/frontend/components/task/TaskCard.vue
@@ -9,7 +9,12 @@
         <div class="flex items-start justify-between gap-2">
             <div class="min-w-0">
                 <div class="flex items-center gap-1">
-                    <span v-if="task.project && task.number" class="text-xs font-semibold" :style="{ color: task.project.color }">{{ task.project.code }}{{ task.number }}</span>
+                    <span
+                        v-if="task.project && task.number"
+                        class="text-xs font-semibold"
+                        :class="showProjectColor ? '' : 'text-neutral-400'"
+                        :style="showProjectColor && task.project.color ? { color: task.project.color } : {}"
+                    >{{ task.project.code }}{{ task.number }}</span>
                     <Icon
                         v-if="task.priority?.label === 'Haute'"
                         name="mdi:flag-variant"
@@ -68,9 +73,12 @@
 <script setup lang="ts">
 import type { Task } from '~/services/dto/task'
 
-const props = defineProps<{
+const props = withDefaults(defineProps<{
     task: Task
-}>()
+    showProjectColor?: boolean
+}>(), {
+    showProjectColor: false,
+})
 
 const emit = defineEmits<{
     (e: 'click'): void
diff --git a/frontend/components/task/TaskListItem.vue b/frontend/components/task/TaskListItem.vue
new file mode 100644
index 0000000..95a0e19
--- /dev/null
+++ b/frontend/components/task/TaskListItem.vue
@@ -0,0 +1,108 @@
+<template>
+    <div
+        class="flex cursor-pointer items-stretch gap-3 rounded-[10px] bg-white px-3 py-2.5 transition-colors hover:shadow-sm sm:px-4"
+        :class="selected ? 'ring-2 ring-primary-500' : ''"
+        @click="emit('click')"
+    >
+        <!-- Content -->
+        <div class="min-w-0 flex-1">
+            <!-- Row 1: checkbox + code + flag -->
+            <div class="flex items-center gap-1.5">
+                <div
+                    class="flex h-4 w-4 shrink-0 cursor-pointer items-center justify-center rounded border-2 transition-colors"
+                    :class="selected ? 'border-primary-500 bg-primary-500' : 'border-neutral-300 hover:border-primary-400'"
+                    @click.stop="emit('toggle-select', task.id)"
+                >
+                    <Icon v-if="selected" name="mdi:check" size="12" class="text-white" />
+                </div>
+                <span
+                    v-if="task.project && task.number"
+                    class="text-xs font-semibold"
+                    :class="showProjectColor ? '' : 'text-neutral-400'"
+                    :style="showProjectColor && task.project.color ? { color: task.project.color } : {}"
+                >
+                    {{ task.project.code }}-{{ task.number }}
+                </span>
+                <Icon
+                    v-if="task.priority?.label === 'Haute'"
+                    name="mdi:flag-variant"
+                    class="h-3.5 w-3.5 text-red-600"
+                />
+            </div>
+            <!-- Row 2: title -->
+            <h4 class="mt-1 text-sm font-semibold text-neutral-900">{{ task.title }}</h4>
+            <!-- Row 3: tags + status -->
+            <div class="mt-2 flex flex-wrap items-center gap-1.5">
+                <span
+                    v-for="tag in task.tags"
+                    :key="tag.id"
+                    class="rounded-full px-2 py-0.5 text-[10px] font-semibold text-white"
+                    :style="{ backgroundColor: tag.color }"
+                >
+                    {{ tag.label }}
+                </span>
+                <span
+                    v-if="task.status"
+                    class="text-xs font-semibold uppercase text-neutral-400"
+                >
+                    {{ task.status.label }}
+                </span>
+                <span v-else class="text-xs font-semibold uppercase text-neutral-300">
+                    Backlog
+                </span>
+            </div>
+        </div>
+
+        <!-- Right: timer top, avatar bottom -->
+        <div class="flex shrink-0 flex-col items-end justify-between self-stretch gap-1">
+            <button
+                class="shrink-0 transition-colors"
+                :class="isTimerOnTask ? 'text-[#F18619] hover:text-[#d97314]' : 'text-neutral-400 hover:text-primary-500'"
+                @click.stop="isTimerOnTask ? timerStore.stop() : timerStore.startFromTask(task)"
+            >
+                <Icon :name="isTimerOnTask ? 'mdi:stop-circle-outline' : 'mdi:play-circle-outline'" size="20" />
+            </button>
+            <UserAvatar
+                v-if="task.assignee"
+                :user="task.assignee"
+                size="xs"
+            />
+            <span
+                v-else
+                class="flex h-5 w-5 items-center justify-center rounded-full bg-neutral-200 text-neutral-400"
+            >
+                <Icon name="mdi:account-outline" size="14" />
+            </span>
+        </div>
+    </div>
+</template>
+
+<script setup lang="ts">
+import type { Task } from '~/services/dto/task'
+
+const props = withDefaults(defineProps<{
+    task: Task
+    showProjectColor?: boolean
+    selected?: boolean
+}>(), {
+    showProjectColor: false,
+    selected: false,
+})
+
+const emit = defineEmits<{
+    (e: 'click'): void
+    (e: 'toggle-select', taskId: number): void
+}>()
+
+const timerStore = useTimerStore()
+
+const isTimerOnTask = computed(() => {
+    const entry = timerStore.activeEntry
+    if (!entry?.task) return false
+    const entryTaskId = typeof entry.task === 'string'
+        ? entry.task
+        : (entry.task['@id'] ?? entry.task.id)
+    const taskId = props.task['@id'] ?? props.task.id
+    return entryTaskId === taskId || entryTaskId === `/api/tasks/${props.task.id}`
+})
+</script>
diff --git a/frontend/pages/my-tasks.vue b/frontend/pages/my-tasks.vue
index 8af5999..d7078c3 100644
--- a/frontend/pages/my-tasks.vue
+++ b/frontend/pages/my-tasks.vue
@@ -51,6 +51,9 @@ const selectedAssigneeId = ref<number | null>(auth.user?.id ?? null)
 // View toggle
 const viewMode = ref<'kanban' | 'list'>('kanban')
 
+// Bulk selection
+const selectedTaskIds = reactive(new Set<number>())
+
 // Modal
 const taskModalOpen = ref(false)
 const selectedTask = ref<Task | null>(null)
@@ -228,6 +231,52 @@ async function onSaved() {
     await loadTasks()
 }
 
+function toggleTaskSelect(taskId: number) {
+    if (selectedTaskIds.has(taskId)) {
+        selectedTaskIds.delete(taskId)
+    } else {
+        selectedTaskIds.add(taskId)
+    }
+}
+
+function toggleSelectAll(taskList: Task[]) {
+    if (selectedTaskIds.size === taskList.length) {
+        selectedTaskIds.clear()
+    } else {
+        taskList.forEach(t => selectedTaskIds.add(t.id))
+    }
+}
+
+async function onBulkUpdate(field: string, value: number) {
+    const ids = [...selectedTaskIds]
+    if (ids.length === 0) return
+    const payload: Record<string, unknown> = {}
+    if (field === 'status') payload.status = `/api/task_statuses/${value}`
+    else if (field === 'assignee') payload.assignee = `/api/users/${value}`
+    else if (field === 'priority') payload.priority = `/api/task_priorities/${value}`
+    else if (field === 'effort') payload.effort = `/api/task_efforts/${value}`
+    else if (field === 'group') payload.group = `/api/task_groups/${value}`
+    await Promise.all(ids.map(id => taskService.update(id, payload)))
+    selectedTaskIds.clear()
+    await loadTasks()
+}
+
+async function onBulkArchive() {
+    const ids = [...selectedTaskIds]
+    if (ids.length === 0) return
+    await Promise.all(ids.map(id => taskService.update(id, { archived: true })))
+    selectedTaskIds.clear()
+    await loadTasks()
+}
+
+async function onBulkDelete() {
+    const ids = [...selectedTaskIds]
+    if (ids.length === 0) return
+    await Promise.all(ids.map(id => taskService.remove(id)))
+    selectedTaskIds.clear()
+    await loadTasks()
+}
+
 onMounted(() => {
     loadAll()
 })
@@ -247,24 +296,16 @@ onMounted(() => {
                         <Icon name="mdi:plus" size="18" />
                         {{ $t('myTasks.createTask') }}
                     </button>
-                    <div class="flex gap-1">
-                        <button
-                            class="flex items-center justify-center rounded-md p-1.5 transition-colors"
-                            :class="viewMode === 'kanban' ? 'bg-primary-500 text-white' : 'text-neutral-400 hover:text-primary-500'"
-                            :title="$t('myTasks.viewKanban')"
-                            @click="viewMode = 'kanban'"
-                        >
-                            <Icon name="mdi:view-column-outline" size="18" />
-                        </button>
-                        <button
-                            class="flex items-center justify-center rounded-md p-1.5 transition-colors"
-                            :class="viewMode === 'list' ? 'bg-primary-500 text-white' : 'text-neutral-400 hover:text-primary-500'"
-                            :title="$t('myTasks.viewList')"
-                            @click="viewMode = 'list'"
-                        >
-                            <Icon name="mdi:view-list-outline" size="18" />
-                        </button>
-                    </div>
+                    <button
+                        class="flex items-center justify-center rounded-md border p-1.5 transition-colors"
+                        :class="viewMode === 'list'
+                            ? 'border-primary-500 bg-primary-500 text-white'
+                            : 'border-primary-500 text-primary-500 hover:bg-primary-50'"
+                        :title="viewMode === 'list' ? $t('myTasks.viewKanban') : $t('myTasks.viewList')"
+                        @click="viewMode = viewMode === 'kanban' ? 'list' : 'kanban'"
+                    >
+                        <Icon name="mdi:format-list-bulleted" size="20" />
+                    </button>
                 </div>
             </div>
 
@@ -351,6 +392,7 @@ onMounted(() => {
                                 v-for="task in tasksByStatus(status.id)"
                                 :key="task.id"
                                 :task="task"
+                                show-project-color
                                 @click="openTaskEdit(task)"
                             />
                             <p
@@ -379,6 +421,7 @@ onMounted(() => {
                         v-for="task in backlogTasks"
                         :key="task.id"
                         :task="task"
+                        show-project-color
                         @click="openTaskEdit(task)"
                     />
                 </div>
@@ -392,63 +435,31 @@ onMounted(() => {
         </div>
 
         <!-- List View -->
-        <div v-if="viewMode === 'list'" class="mt-6">
-            <div
+        <div v-if="viewMode === 'list'" class="mt-6 flex flex-col gap-2.5 rounded-[10px] bg-tertiary-500 p-2.5">
+            <TaskBulkActions
+                :selected-count="selectedTaskIds.size"
+                :total-count="tasks.length"
+                :all-selected="tasks.length > 0 && selectedTaskIds.size === tasks.length"
+                :some-selected="selectedTaskIds.size > 0 && selectedTaskIds.size < tasks.length"
+                :statuses="statuses"
+                :users="users"
+                :priorities="priorities"
+                :efforts="efforts"
+                :groups="groups"
+                @toggle-all="toggleSelectAll(tasks)"
+                @bulk-update="onBulkUpdate"
+                @bulk-archive="onBulkArchive"
+                @bulk-delete="onBulkDelete"
+            />
+            <TaskListItem
                 v-for="task in tasks"
                 :key="task.id"
-                class="flex cursor-pointer items-center justify-between gap-2 border-b border-neutral-100 px-2 py-3 transition-colors hover:bg-neutral-50 sm:px-4"
+                :task="task"
+                show-project-color
+                :selected="selectedTaskIds.has(task.id)"
                 @click="openTaskEdit(task)"
-            >
-                <div class="min-w-0 flex-1">
-                    <h4 class="text-sm font-semibold text-neutral-900">{{ task.title }}</h4>
-                    <div class="mt-1 flex flex-wrap items-center gap-1.5">
-                        <span
-                            v-if="task.priority"
-                            class="rounded-full px-2 py-0.5 text-xs font-semibold text-white"
-                            :style="{ backgroundColor: task.priority.color }"
-                        >
-                            {{ task.priority.label }}
-                        </span>
-                        <span
-                            v-for="tag in task.tags"
-                            :key="tag.id"
-                            class="rounded-full px-2 py-0.5 text-xs font-semibold text-white"
-                            :style="{ backgroundColor: tag.color }"
-                        >
-                            {{ tag.label }}
-                        </span>
-                    </div>
-                </div>
-                <div class="flex items-center gap-3">
-                    <button
-                        class="shrink-0 transition-colors"
-                        :class="isTimerOnTask(task) ? 'text-[#F18619] hover:text-[#d97314]' : 'text-neutral-400 hover:text-primary-500'"
-                        @click.stop="isTimerOnTask(task) ? timerStore.stop() : timerStore.startFromTask(task)"
-                    >
-                        <Icon :name="isTimerOnTask(task) ? 'mdi:stop-circle-outline' : 'mdi:play-circle-outline'" size="20" />
-                    </button>
-                    <div class="flex items-center gap-1.5">
-                        <Icon
-                            v-if="task.clientTicket"
-                            name="heroicons:user-circle"
-                            class="h-4 w-4 text-blue-400"
-                            :title="$t('clientTicket.linkedTooltip', { number: 'CT-' + String(task.clientTicket.number).padStart(3, '0') })"
-                        />
-                        <span
-                            v-if="task.project && task.number"
-                            class="text-sm font-semibold"
-                            :style="{ color: task.project.color }"
-                        >
-                            {{ task.project.code }}-{{ task.number }}
-                        </span>
-                        <Icon
-                            v-if="task.priority?.label === 'Haute'"
-                            name="mdi:flag-variant"
-                            class="h-4 w-4 text-red-600"
-                        />
-                    </div>
-                </div>
-            </div>
+                @toggle-select="toggleTaskSelect"
+            />
             <p
                 v-if="tasks.length === 0 && !isLoading"
                 class="py-8 text-center text-sm text-neutral-400"
diff --git a/frontend/pages/projects/[id]/index.vue b/frontend/pages/projects/[id]/index.vue
index d17edd0..8fa3fb4 100644
--- a/frontend/pages/projects/[id]/index.vue
+++ b/frontend/pages/projects/[id]/index.vue
@@ -11,6 +11,16 @@
                         <span class="hidden sm:inline">+ Ajouter un ticket</span>
                         <span class="sm:hidden">+ Ticket</span>
                     </button>
+                    <button
+                        class="flex items-center justify-center rounded-md border p-1.5 transition-colors"
+                        :class="viewMode === 'list'
+                            ? 'border-primary-500 bg-primary-500 text-white'
+                            : 'border-primary-500 text-primary-500 hover:bg-primary-50'"
+                        title="Vue liste"
+                        @click="viewMode = viewMode === 'kanban' ? 'list' : 'kanban'"
+                    >
+                        <Icon name="mdi:format-list-bulleted" size="20" />
+                    </button>
                     <button
                         class="flex shrink-0 items-center rounded-md bg-neutral-200 px-3 py-2 text-neutral-600 hover:bg-neutral-300 sm:px-4"
                         title="Paramètres du projet"
@@ -58,11 +68,29 @@
                     text-field="text-sm"
                     text-value="text-sm"
                 />
+                <MalioSelect
+                    v-model="selectedPriorityId"
+                    :options="priorityFilterOptions"
+                    label="Priorité"
+                    empty-option-label="Toutes"
+                    min-width="!w-40"
+                    text-field="text-sm"
+                    text-value="text-sm"
+                />
+                <MalioSelect
+                    v-model="selectedEffortId"
+                    :options="effortFilterOptions"
+                    label="Effort"
+                    empty-option-label="Tous"
+                    min-width="!w-40"
+                    text-field="text-sm"
+                    text-value="text-sm"
+                />
             </div>
         </div>
 
         <!-- Kanban -->
-        <div class="mt-6 flex h-[calc(100vh-200px)] gap-3 overflow-x-auto pb-4">
+        <div v-if="viewMode === 'kanban'" class="mt-6 flex h-[calc(100vh-200px)] gap-3 overflow-x-auto pb-4">
             <div
                 v-for="status in statuses"
                 :key="status.id"
@@ -100,6 +128,7 @@
 
         <!-- Backlog -->
         <div
+            v-if="viewMode === 'kanban'"
             class="mt-8 rounded-lg p-4 transition-colors"
             :class="dragOverStatusId === 0 ? 'bg-tertiary-600' : 'bg-tertiary-500'"
             @dragover.prevent
@@ -118,6 +147,39 @@
             </div>
         </div>
 
+        <!-- List View -->
+        <div v-if="viewMode === 'list'" class="mt-6 flex flex-col gap-2.5 rounded-[10px] bg-tertiary-500 p-2.5">
+            <TaskBulkActions
+                :selected-count="selectedTaskIds.size"
+                :total-count="filteredTasks.length"
+                :all-selected="filteredTasks.length > 0 && selectedTaskIds.size === filteredTasks.length"
+                :some-selected="selectedTaskIds.size > 0 && selectedTaskIds.size < filteredTasks.length"
+                :statuses="statuses"
+                :users="users"
+                :priorities="priorities"
+                :efforts="efforts"
+                :groups="groups"
+                @toggle-all="toggleSelectAll(filteredTasks)"
+                @bulk-update="onBulkUpdate"
+                @bulk-archive="onBulkArchive"
+                @bulk-delete="onBulkDelete"
+            />
+            <TaskListItem
+                v-for="task in filteredTasks"
+                :key="task.id"
+                :task="task"
+                :selected="selectedTaskIds.has(task.id)"
+                @click="openTaskEdit(task)"
+                @toggle-select="toggleTaskSelect"
+            />
+            <p
+                v-if="filteredTasks.length === 0"
+                class="py-8 text-center text-sm text-neutral-400"
+            >
+                Aucun ticket
+            </p>
+        </div>
+
         <TaskModal
             v-model="taskDrawerOpen"
             :task="selectedTask"
@@ -191,6 +253,10 @@ const selectedGroupId = ref<number | null>(null)
 const selectedTagId = ref<number | null>(null)
 const selectedAssigneeId = ref<number | null>(null)
 const selectedStatusId = ref<number | null>(null)
+const selectedPriorityId = ref<number | null>(null)
+const selectedEffortId = ref<number | null>(null)
+const viewMode = ref<'kanban' | 'list'>('kanban')
+const selectedTaskIds = reactive(new Set<number>())
 const dragOverStatusId = ref<number | null>(null)
 const dragCounter = ref(0)
 const taskDrawerOpen = ref(false)
@@ -213,6 +279,14 @@ const statusFilterOptions = computed(() =>
     statuses.value.map(s => ({ label: s.label, value: s.id }))
 )
 
+const priorityFilterOptions = computed(() =>
+    priorities.value.map(p => ({ label: p.label, value: p.id }))
+)
+
+const effortFilterOptions = computed(() =>
+    efforts.value.map(e => ({ label: e.label, value: e.id }))
+)
+
 const filteredTasks = computed(() => {
     let result = tasks.value.filter(t => !t.archived)
     if (selectedGroupId.value) {
@@ -227,6 +301,12 @@ const filteredTasks = computed(() => {
     if (selectedStatusId.value) {
         result = result.filter(t => t.status?.id === selectedStatusId.value)
     }
+    if (selectedPriorityId.value) {
+        result = result.filter(t => t.priority?.id === selectedPriorityId.value)
+    }
+    if (selectedEffortId.value) {
+        result = result.filter(t => t.effort?.id === selectedEffortId.value)
+    }
     return result
 })
 
@@ -311,6 +391,52 @@ async function onDropBacklog(event: DragEvent) {
     await taskService.update(taskId, { status: null })
 }
 
+function toggleTaskSelect(taskId: number) {
+    if (selectedTaskIds.has(taskId)) {
+        selectedTaskIds.delete(taskId)
+    } else {
+        selectedTaskIds.add(taskId)
+    }
+}
+
+function toggleSelectAll(taskList: Task[]) {
+    if (selectedTaskIds.size === taskList.length) {
+        selectedTaskIds.clear()
+    } else {
+        taskList.forEach(t => selectedTaskIds.add(t.id))
+    }
+}
+
+async function onBulkUpdate(field: string, value: number) {
+    const ids = [...selectedTaskIds]
+    if (ids.length === 0) return
+    const payload: Record<string, unknown> = {}
+    if (field === 'status') payload.status = `/api/task_statuses/${value}`
+    else if (field === 'assignee') payload.assignee = `/api/users/${value}`
+    else if (field === 'priority') payload.priority = `/api/task_priorities/${value}`
+    else if (field === 'effort') payload.effort = `/api/task_efforts/${value}`
+    else if (field === 'group') payload.group = `/api/task_groups/${value}`
+    await Promise.all(ids.map(id => taskService.update(id, payload)))
+    selectedTaskIds.clear()
+    await loadData()
+}
+
+async function onBulkArchive() {
+    const ids = [...selectedTaskIds]
+    if (ids.length === 0) return
+    await Promise.all(ids.map(id => taskService.update(id, { archived: true })))
+    selectedTaskIds.clear()
+    await loadData()
+}
+
+async function onBulkDelete() {
+    const ids = [...selectedTaskIds]
+    if (ids.length === 0) return
+    await Promise.all(ids.map(id => taskService.remove(id)))
+    selectedTaskIds.clear()
+    await loadData()
+}
+
 async function onSaved() {
     await loadData()
 }