diff --git a/backend/db/schema/tasks.ts b/backend/db/schema/tasks.ts
index f20909a..aa40617 100644
--- a/backend/db/schema/tasks.ts
+++ b/backend/db/schema/tasks.ts
@@ -39,8 +39,6 @@ export const tasks = pgTable("tasks", {
         () => customers.id
     ),
 
-    dependencyIds: jsonb("dependency_ids").notNull().default([]),
-
     profiles: jsonb("profiles").notNull().default([]),
 
     archived: boolean("archived").notNull().default(false),
diff --git a/frontend/pages/tasks/index.vue b/frontend/pages/tasks/index.vue
index 254d5e7..1917219 100644
--- a/frontend/pages/tasks/index.vue
+++ b/frontend/pages/tasks/index.vue
@@ -1,6 +1,5 @@
 <script setup>
 import { setPageLayout } from "#app"
-import { Bar } from "vue-chartjs"
 
 const router = useRouter()
 const route = useRoute()
@@ -17,7 +16,7 @@ const deleting = ref(false)
 const quickCompleteLoadingId = ref(null)
 const tasks = ref([])
 const search = ref("")
-const viewMode = ref("list")
+const viewMode = ref("kanban")
 const draggingTaskId = ref(null)
 const droppingOn = ref("")
 const projects = ref([])
@@ -28,7 +27,6 @@ const canViewAll = computed(() => has("tasks-viewAll"))
 const canCreate = computed(() => has("tasks-create"))
 const currentUserId = computed(() => auth.user?.user_id || auth.user?.id || null)
 const showOnlyMine = ref(!canViewAll.value)
-const expandedTaskIds = ref([])
 
 const isModalOpen = ref(false)
 const modalMode = ref("show")
@@ -74,162 +72,6 @@ const groupedTasks = computed(() => {
   }, {})
 })
 
-const taskMap = computed(() => {
-  return Object.fromEntries(tasks.value.map((task) => [String(task.id), task]))
-})
-
-const taskSuccessorMap = computed(() => {
-  const map = {}
-
-  tasks.value.forEach((task) => {
-    map[String(task.id)] = []
-  })
-
-  tasks.value.forEach((task) => {
-    getDependencyIds(task).forEach((dependencyId) => {
-      const key = String(dependencyId)
-      if (!map[key]) map[key] = []
-      map[key].push(task.id)
-    })
-  })
-
-  return map
-})
-
-const dependencyOptions = computed(() => {
-  const blockedIds = taskForm.value.id ? getDescendantIds(taskForm.value.id) : new Set()
-
-  return tasks.value
-      .filter((task) => String(task.id) !== String(taskForm.value.id) && !blockedIds.has(String(task.id)))
-      .map((task) => ({ value: task.id, label: task.name || `#${task.id}` }))
-      .sort((a, b) => a.label.localeCompare(b.label, "de"))
-})
-
-const waterfallColumns = computed(() => buildWaterfallColumns(filteredTasks.value))
-const waterfallHasCycle = computed(() => waterfallColumns.value.some((column) => column.kind === "cycle"))
-const waterfallRows = computed(() => buildWaterfallRows(filteredTasks.value, waterfallColumns.value))
-const listRootTasks = computed(() => {
-  const childIds = new Set()
-
-  filteredTasks.value.forEach((task) => {
-    getDependencyIds(task).forEach((dependencyId) => {
-      childIds.add(String(dependencyId))
-    })
-  })
-
-  return filteredTasks.value.filter((task) => !childIds.has(String(task.id)))
-})
-const waterfallMaxPosition = computed(() => {
-  return waterfallRows.value.reduce((max, row) => Math.max(max, row.end), 1)
-})
-const waterfallChartHeight = computed(() => Math.max(320, waterfallRows.value.length * 54 + 80))
-const waterfallChartData = computed(() => ({
-  datasets: [
-    {
-      label: "Ablauf",
-      data: waterfallRows.value.map((row) => ({
-        x: [row.start, row.end],
-        y: row.label,
-        taskId: row.task.id,
-        taskName: row.task.name,
-        dependencies: getDependencySummary(row.task),
-        status: normalizeStatus(row.task.categorie),
-        stateLabel: getTaskDependencyStateLabel(row.task),
-        kind: row.kind
-      })),
-      borderRadius: 8,
-      borderSkipped: false,
-      borderWidth: 1.5,
-      borderColor(context) {
-        const raw = context.raw || {}
-        if (raw.kind === "cycle") return "#c2410c"
-        return getTaskDependencyState(taskMap.value[String(raw.taskId)]) === "done" ? "#15803d" : "#1d4ed8"
-      },
-      backgroundColor(context) {
-        const raw = context.raw || {}
-        if (raw.kind === "cycle") return "rgba(249, 115, 22, 0.85)"
-        const state = getTaskDependencyState(taskMap.value[String(raw.taskId)])
-        if (state === "done") return "rgba(34, 197, 94, 0.85)"
-        if (state === "blocked") return "rgba(245, 158, 11, 0.85)"
-        return "rgba(59, 130, 246, 0.82)"
-      },
-      barThickness: 22
-    }
-  ]
-}))
-const waterfallChartOptions = computed(() => ({
-  indexAxis: "y",
-  responsive: true,
-  maintainAspectRatio: false,
-  animation: false,
-  parsing: true,
-  plugins: {
-    legend: {
-      display: false
-    },
-    tooltip: {
-      callbacks: {
-        title(items) {
-          return items[0]?.raw?.taskName || items[0]?.label || ""
-        },
-        label(item) {
-          const raw = item.raw || {}
-          return `Position: ${formatDependencyRange(raw.x)}`
-        },
-        afterLabel(item) {
-          const raw = item.raw || {}
-          return [
-            `Status: ${raw.status || "-"}`,
-            `Freigabe: ${raw.stateLabel || "-"}`,
-            `Unteraufgaben: ${raw.dependencies || "-"}`,
-            `Oberaufgaben: ${getDependentSummary(taskMap.value[String(raw.taskId)])}`
-          ]
-        }
-      }
-    }
-  },
-  scales: {
-    x: {
-      min: 0,
-      max: waterfallMaxPosition.value,
-      grid: {
-        color: "rgba(148, 163, 184, 0.16)"
-      },
-      border: {
-        display: false
-      },
-      ticks: {
-        stepSize: 1,
-        display: false
-      },
-      title: {
-        display: true,
-        text: "Abhaengigkeitsverlauf"
-      }
-    },
-    y: {
-      grid: {
-        display: false
-      },
-      border: {
-        display: false
-      },
-      ticks: {
-        color: "#475569"
-      }
-    }
-  },
-  onClick: (_event, elements, chart) => {
-    const first = elements?.[0]
-    if (!first) return
-    const raw = chart.data.datasets[first.datasetIndex]?.data?.[first.index]
-    if (raw?.taskId) {
-      const task = taskMap.value[String(raw.taskId)]
-      if (task) openTaskViaRoute(task)
-    }
-  }
-}))
-
 const modalTitle = computed(() => {
   if (modalMode.value === "create") return "Neue Aufgabe"
   if (modalMode.value === "edit") return "Aufgabe bearbeiten"
@@ -241,7 +83,6 @@ const listColumns = [
   { key: "actions", label: "" },
   { key: "name", label: "Titel" },
   { key: "categorie", label: "Status" },
-  { key: "dependencies", label: "Unteraufgaben" },
   { key: "assignee", label: "Zuweisung" },
   { key: "project", label: "Projekt" },
   { key: "customer", label: "Kunde" },
@@ -254,7 +95,6 @@ function getEmptyTask() {
     name: "",
     description: "",
     categorie: "Offen",
-    dependencyIds: [],
     userId: currentUserId.value || null,
     project: null,
     customer: null,
@@ -268,15 +108,6 @@ function normalizeStatus(status) {
   return STATUS_COLUMNS.includes(status) ? status : "Offen"
 }
 
-function normalizeDependencyIds(value, taskId = null) {
-  const ownId = taskId === null || taskId === undefined ? null : String(taskId)
-
-  return [...new Set((Array.isArray(value) ? value : [])
-      .map((entry) => Number(entry))
-      .filter((entry) => Number.isFinite(entry))
-      .filter((entry) => String(entry) !== ownId))]
-}
-
 function getTaskAssigneeId(task) {
   return task.userId || task.user_id || task.profile || null
 }
@@ -293,7 +124,6 @@ function mapTaskToForm(task) {
     name: task.name || "",
     description: task.description || "",
     categorie: normalizeStatus(task.categorie),
-    dependencyIds: getDependencyIds(task),
     userId: getTaskAssigneeId(task),
     project: toNullableNumber(task.project?.id ?? task.project),
     customer: toNullableNumber(task.customer?.id ?? task.customer),
@@ -301,323 +131,6 @@ function mapTaskToForm(task) {
   }
 }
 
-function normalizeTask(task) {
-  return {
-    ...task,
-    categorie: normalizeStatus(task.categorie),
-    dependencyIds: getDependencyIds(task)
-  }
-}
-
-function getDependencyIds(task) {
-  return normalizeDependencyIds(task?.dependencyIds ?? task?.dependency_ids ?? [], task?.id)
-}
-
-function getTaskLabel(taskId) {
-  const task = taskMap.value[String(taskId)]
-  return task?.name || `Aufgabe #${taskId}`
-}
-
-function getDescendantIds(taskId) {
-  const seen = new Set()
-  const stack = [...(taskSuccessorMap.value[String(taskId)] || [])]
-
-  while (stack.length) {
-    const current = stack.pop()
-    const key = String(current)
-    if (seen.has(key)) continue
-    seen.add(key)
-    stack.push(...(taskSuccessorMap.value[key] || []))
-  }
-
-  return seen
-}
-
-function wouldCreateDependencyCycle(taskId, dependencyIds) {
-  if (!taskId) return false
-
-  const targetKey = String(taskId)
-  const dependencyKeys = normalizeDependencyIds(dependencyIds, taskId).map((id) => String(id))
-
-  const hasPathToTask = (startKey) => {
-    const visited = new Set()
-    const stack = [startKey]
-
-    while (stack.length) {
-      const currentKey = stack.pop()
-      if (currentKey === targetKey) return true
-      if (visited.has(currentKey)) continue
-      visited.add(currentKey)
-      const currentTask = taskMap.value[currentKey]
-      if (!currentTask) continue
-      getDependencyIds(currentTask).forEach((nextId) => {
-        stack.push(String(nextId))
-      })
-    }
-
-    return false
-  }
-
-  return dependencyKeys.some((dependencyKey) => hasPathToTask(dependencyKey))
-}
-
-function getTaskDependencyState(task) {
-  const dependencies = getDependencyIds(task)
-  if (normalizeStatus(task.categorie) === "Abgeschlossen") return "done"
-  if (!dependencies.length) return "ready"
-
-  const openDependencies = dependencies.filter((dependencyId) => {
-    const dependencyTask = taskMap.value[String(dependencyId)]
-    return dependencyTask && normalizeStatus(dependencyTask.categorie) !== "Abgeschlossen"
-  })
-
-  return openDependencies.length ? "blocked" : "ready"
-}
-
-function getTaskDependencyStateLabel(task) {
-  const state = getTaskDependencyState(task)
-  if (state === "done") return "Abgeschlossen"
-  if (state === "blocked") return "Blockiert"
-  return "Bereit"
-}
-
-function getDependencySummary(task) {
-  const dependencies = getDependencyIds(task)
-  if (!dependencies.length) return "-"
-  return dependencies.map((dependencyId) => getTaskLabel(dependencyId)).join(", ")
-}
-
-function getDependencyPreview(task, limit = 2) {
-  const dependencies = getDependencyIds(task)
-  if (!dependencies.length) return []
-  return dependencies.slice(0, limit).map((dependencyId) => getTaskLabel(dependencyId))
-}
-
-function getRemainingDependencyCount(task, shownCount = 2) {
-  const dependencies = getDependencyIds(task)
-  return Math.max(0, dependencies.length - shownCount)
-}
-
-function getDependencyTasks(task, limit = null) {
-  const dependencies = getDependencyIds(task)
-      .map((dependencyId) => taskMap.value[String(dependencyId)])
-      .filter(Boolean)
-
-  return limit === null ? dependencies : dependencies.slice(0, limit)
-}
-
-function getSubtaskProgress(task) {
-  const subtasks = getDependencyTasks(task)
-  const total = subtasks.length
-  const done = subtasks.filter((subtask) => normalizeStatus(subtask.categorie) === "Abgeschlossen").length
-  return { done, total }
-}
-
-function hasSubtasks(task) {
-  return getDependencyIds(task).length > 0
-}
-
-function hasOpenSubtasks(task) {
-  const { done, total } = getSubtaskProgress(task)
-  return total > 0 && done < total
-}
-
-function isExpanded(taskId) {
-  return expandedTaskIds.value.includes(String(taskId))
-}
-
-function toggleExpanded(taskId) {
-  const key = String(taskId)
-  if (isExpanded(key)) {
-    expandedTaskIds.value = expandedTaskIds.value.filter((id) => id !== key)
-    return
-  }
-  expandedTaskIds.value = [...expandedTaskIds.value, key]
-}
-
-function buildWaterfallColumns(taskList) {
-  const filteredIds = new Set(taskList.map((task) => String(task.id)))
-  const remaining = new Map(
-      taskList.map((task) => [
-        String(task.id),
-        {
-          ...task,
-          internalDependencies: getDependencyIds(task).filter((dependencyId) => filteredIds.has(String(dependencyId)))
-        }
-      ])
-  )
-  const columns = []
-  let level = 1
-
-  while (remaining.size) {
-    const ready = [...remaining.values()]
-        .filter((task) => task.internalDependencies.every((dependencyId) => !remaining.has(String(dependencyId))))
-        .sort((a, b) => a.name.localeCompare(b.name, "de"))
-
-    if (!ready.length) {
-      columns.push({
-        id: `cycle-${level}`,
-        kind: "cycle",
-        title: "Zyklische Abhängigkeit",
-        tasks: [...remaining.values()].sort((a, b) => a.name.localeCompare(b.name, "de"))
-      })
-      break
-    }
-
-    columns.push({
-      id: `level-${level}`,
-      kind: "level",
-      title: `Schritt ${level}`,
-      tasks: ready
-    })
-
-    ready.forEach((task) => {
-      remaining.delete(String(task.id))
-    })
-
-    level += 1
-  }
-
-  return columns
-}
-
-function buildWaterfallRows(taskList, columns) {
-  const filteredIds = new Set(taskList.map((task) => String(task.id)))
-  const columnTaskMeta = new Map()
-
-  columns.forEach((column, index) => {
-    column.tasks.forEach((task) => {
-      columnTaskMeta.set(String(task.id), {
-        columnId: column.id,
-        start: index,
-        end: index + 1,
-        kind: column.kind
-      })
-    })
-  })
-
-  const getInternalDependencyIds = (task) =>
-      getDependencyIds(task).filter((dependencyId) => filteredIds.has(String(dependencyId)))
-
-  const getTaskDepth = (taskId) => {
-    const meta = columnTaskMeta.get(String(taskId))
-    return meta?.end || 0
-  }
-
-  const rows = []
-  const childrenByParent = new Map()
-  const taskById = Object.fromEntries(taskList.map((task) => [String(task.id), task]))
-  const allChildIds = new Set()
-
-  taskList.forEach((task) => {
-    const meta = columnTaskMeta.get(String(task.id))
-    if (!meta || meta.kind === "cycle") return
-
-    const internalDependencies = getInternalDependencyIds(task)
-    if (!internalDependencies.length) return
-
-    childrenByParent.set(
-        String(task.id),
-        internalDependencies
-            .map((dependencyId) => taskById[String(dependencyId)])
-            .filter(Boolean)
-    )
-
-    internalDependencies.forEach((dependencyId) => {
-      allChildIds.add(String(dependencyId))
-    })
-  })
-
-  childrenByParent.forEach((children) => {
-    children.sort((a, b) => {
-      const depthDiff = getTaskDepth(a.id) - getTaskDepth(b.id)
-      if (depthDiff !== 0) return depthDiff
-      return (a.name || "").localeCompare(b.name || "", "de")
-    })
-  })
-
-  const appendTaskAndChildren = (task) => {
-    const meta = columnTaskMeta.get(String(task.id))
-    if (!meta) return
-
-    rows.push({
-      id: `${meta.columnId}-${task.id}`,
-      task,
-      label: task.name || `Aufgabe #${task.id}`,
-      start: meta.start,
-      end: meta.end,
-      kind: meta.kind
-    })
-
-    ;(childrenByParent.get(String(task.id)) || []).forEach((child) => {
-      appendTaskAndChildren(child)
-    })
-  }
-
-  const rootTasks = taskList
-      .filter((task) => {
-        const meta = columnTaskMeta.get(String(task.id))
-        return meta && meta.kind !== "cycle" && !allChildIds.has(String(task.id))
-      })
-      .sort((a, b) => {
-        const depthDiff = getTaskDepth(a.id) - getTaskDepth(b.id)
-        if (depthDiff !== 0) return depthDiff
-        return (a.name || "").localeCompare(b.name || "", "de")
-      })
-
-  rootTasks.forEach((task) => {
-    appendTaskAndChildren(task)
-  })
-
-  taskList
-      .filter((task) => columnTaskMeta.get(String(task.id))?.kind === "cycle")
-      .sort((a, b) => (a.name || "").localeCompare(b.name || "", "de"))
-      .forEach((task) => {
-        if (rows.some((row) => String(row.task.id) === String(task.id))) return
-        const meta = columnTaskMeta.get(String(task.id))
-        rows.push({
-          id: `${meta.columnId}-${task.id}`,
-          task,
-          label: task.name || `Aufgabe #${task.id}`,
-          start: meta.start,
-          end: meta.end,
-          kind: meta.kind
-        })
-      })
-
-  Object.keys(taskById).forEach((taskId) => {
-    if (rows.some((row) => String(row.task.id) === taskId)) return
-    const task = taskById[taskId]
-    const meta = columnTaskMeta.get(taskId)
-    if (!task || !meta) return
-    rows.push({
-      id: `${meta.columnId}-${task.id}`,
-      task,
-      label: task.name || `Aufgabe #${task.id}`,
-      start: meta.start,
-      end: meta.end,
-      kind: meta.kind
-    })
-  })
-
-  return rows
-}
-
-function formatDependencyRange(range) {
-  if (!Array.isArray(range) || range.length < 2) return "-"
-  const start = Number(range[0]) + 1
-  const end = Number(range[1])
-  if (!Number.isFinite(start) || !Number.isFinite(end)) return "-"
-  return start === end ? `${end}` : `${start} bis ${end}`
-}
-
-function getDependentSummary(task) {
-  if (!task?.id) return "-"
-  const dependentIds = taskSuccessorMap.value[String(task.id)] || []
-  if (!dependentIds.length) return "-"
-  return dependentIds.map((taskId) => getTaskLabel(taskId)).join(", ")
-}
-
 function getEntityLabel(options, id) {
   if (!id) return null
   const hit = options.find((item) => Number(item.value) === Number(id))
@@ -633,7 +146,7 @@ async function loadTasks() {
   loading.value = true
   try {
     const rows = await useEntities("tasks").select()
-    tasks.value = rows.map((task) => normalizeTask(task))
+    tasks.value = rows.map((task) => ({ ...task, categorie: normalizeStatus(task.categorie) }))
   } finally {
     loading.value = false
   }
@@ -658,7 +171,6 @@ function openCreateTask(initialData = {}) {
     ...getEmptyTask(),
     ...initialData,
     categorie: normalizeStatus(initialData.categorie || "Offen"),
-    dependencyIds: normalizeDependencyIds(initialData.dependencyIds || initialData.dependency_ids || []),
     userId: initialData.userId || initialData.user_id || currentUserId.value || null
   }
   isModalOpen.value = true
@@ -692,22 +204,12 @@ async function saveTask() {
     name,
     description: taskForm.value.description || null,
     categorie: normalizeStatus(taskForm.value.categorie),
-    dependencyIds: normalizeDependencyIds(taskForm.value.dependencyIds, taskForm.value.id),
     userId: taskForm.value.userId || null,
     project: toNullableNumber(taskForm.value.project),
     customer: toNullableNumber(taskForm.value.customer),
     plant: toNullableNumber(taskForm.value.plant)
   }
 
-  if (wouldCreateDependencyCycle(taskForm.value.id, payload.dependencyIds)) {
-    toast.add({
-      title: "Abhängigkeit nicht möglich",
-      description: "Diese Auswahl würde einen Zyklus in den Aufgaben-Abhängigkeiten erzeugen.",
-      color: "red"
-    })
-    return
-  }
-
   saving.value = true
   try {
     let targetId = taskForm.value.id
@@ -746,27 +248,20 @@ async function archiveTask() {
   }
 }
 
-async function setTaskCompleted(task, completed) {
+async function completeTaskQuick(task) {
   if (!canCreate.value) return
-  if (!task?.id) return
-  if (completed && hasOpenSubtasks(task)) return
-
-  const nextStatus = completed ? "Abgeschlossen" : "Offen"
-  if (normalizeStatus(task.categorie) === nextStatus) return
+  if (!task?.id || normalizeStatus(task.categorie) === "Abgeschlossen") return
 
   const previousStatus = task.categorie
   quickCompleteLoadingId.value = task.id
-  task.categorie = nextStatus
+  task.categorie = "Abgeschlossen"
 
   try {
-    await useEntities("tasks").update(task.id, { categorie: nextStatus }, true)
-    toast.add({
-      title: completed ? "Aufgabe abgeschlossen" : "Aufgabe wieder geöffnet",
-      color: completed ? "green" : "blue"
-    })
+    await useEntities("tasks").update(task.id, { categorie: "Abgeschlossen" }, true)
+    toast.add({ title: "Aufgabe abgeschlossen", color: "green" })
   } catch (error) {
     task.categorie = previousStatus
-    toast.add({ title: "Aufgabe konnte nicht aktualisiert werden", color: "red" })
+    toast.add({ title: "Aufgabe konnte nicht abgeschlossen werden", color: "red" })
   } finally {
     quickCompleteLoadingId.value = null
   }
@@ -821,7 +316,7 @@ async function handleRouteIntent() {
   if (!task) {
     const loadedTask = await useEntities("tasks").selectSingle(id, "*", true)
     if (loadedTask) {
-      task = normalizeTask(loadedTask)
+      task = { ...loadedTask, categorie: normalizeStatus(loadedTask.categorie) }
       const idx = tasks.value.findIndex((item) => String(item.id) === id)
       if (idx === -1) tasks.value.push(task)
     }
@@ -916,29 +411,30 @@ onMounted(async () => {
 
   <UDashboardPanelContent>
     <div v-if="viewMode === 'kanban'" class="kanban-grid">
-      <template v-for="(status, index) in STATUS_COLUMNS" :key="status">
-        <section
-            class="kanban-column"
-            @dragover.prevent="droppingOn = status"
-            @dragleave="droppingOn = ''"
-            @drop.prevent="onDrop(status)"
-        >
-          <header class="kanban-column-header">
-            <h3>{{ status }}</h3>
-            <UBadge variant="subtle">{{ groupedTasks[status]?.length || 0 }}</UBadge>
-          </header>
+      <section
+          v-for="status in STATUS_COLUMNS"
+          :key="status"
+          class="kanban-column"
+          @dragover.prevent="droppingOn = status"
+          @dragleave="droppingOn = ''"
+          @drop.prevent="onDrop(status)"
+      >
+        <header class="kanban-column-header">
+          <h3>{{ status }}</h3>
+          <UBadge variant="subtle">{{ groupedTasks[status]?.length || 0 }}</UBadge>
+        </header>
 
-          <div :class="['kanban-dropzone', droppingOn === status ? 'kanban-dropzone-active' : '']">
-            <article
-                v-for="task in groupedTasks[status]"
-                :key="task.id"
-                class="kanban-card"
-                draggable="true"
-                @dragstart="onDragStart(task)"
-                @click="openTaskViaRoute(task)"
-            >
-              <div class="kanban-card-title">{{ task.name }}</div>
-              <p v-if="task.description" class="kanban-card-description">{{ task.description }}</p>
+        <div :class="['kanban-dropzone', droppingOn === status ? 'kanban-dropzone-active' : '']">
+          <article
+              v-for="task in groupedTasks[status]"
+              :key="task.id"
+              class="kanban-card"
+              draggable="true"
+              @dragstart="onDragStart(task)"
+              @click="openTaskViaRoute(task)"
+          >
+            <div class="kanban-card-title">{{ task.name }}</div>
+            <p v-if="task.description" class="kanban-card-description">{{ task.description }}</p>
 
             <div class="kanban-card-meta">
               <UBadge v-if="getEntityLabel(projectOptions, task.project?.id || task.project)" variant="soft">
@@ -951,138 +447,48 @@ onMounted(async () => {
                 {{ getEntityLabel(plantOptions, task.plant?.id || task.plant) }}
               </UBadge>
             </div>
-
-            <div v-if="getDependencyIds(task).length" class="kanban-card-dependencies">
-              <span class="kanban-card-dependencies-label">Unteraufgaben</span>
-              <div class="kanban-card-subtasks">
-                <button
-                    v-for="dependencyTask in getDependencyTasks(task, 3)"
-                    :key="dependencyTask.id"
-                    type="button"
-                    class="kanban-subtask-card"
-                    @click.stop="openTaskViaRoute(dependencyTask)"
-                >
-                  <div class="kanban-subtask-card-head">
-                    <span class="kanban-subtask-card-title">{{ dependencyTask.name }}</span>
-                    <UBadge size="xs" variant="soft">{{ normalizeStatus(dependencyTask.categorie) }}</UBadge>
-                  </div>
-                  <p v-if="dependencyTask.description" class="kanban-subtask-card-description">
-                    {{ dependencyTask.description }}
-                  </p>
-                </button>
-                <div
-                    v-if="getRemainingDependencyCount(task, 3) > 0"
-                    class="kanban-subtask-more"
-                >
-                  +{{ getRemainingDependencyCount(task, 3) }} weitere Unteraufgaben
-                </div>
-              </div>
-            </div>
           </article>
 
-            <div v-if="!groupedTasks[status]?.length" class="kanban-empty">
-              Keine Aufgaben
-            </div>
+          <div v-if="!groupedTasks[status]?.length" class="kanban-empty">
+            Keine Aufgaben
           </div>
-        </section>
-
-        <div
-            v-if="index < STATUS_COLUMNS.length - 1"
-            class="kanban-divider"
-            aria-hidden="true"
-        />
+        </div>
+      </section>
+    </div>
+    <UTable
+        v-else-if="filteredTasks.length"
+        :rows="filteredTasks"
+        :columns="listColumns"
+        @select="(task) => openTaskViaRoute(task)"
+    >
+      <template #actions-data="{ row }">
+        <UButton
+            v-if="normalizeStatus(row.categorie) !== 'Abgeschlossen' && canCreate"
+            size="xs"
+            variant="soft"
+            icon="i-heroicons-check"
+            :loading="quickCompleteLoadingId === row.id"
+            @click.stop="completeTaskQuick(row)"
+        >
+          Erledigt
+        </UButton>
       </template>
-    </div>
-    <div v-else-if="viewMode === 'list' && listRootTasks.length" class="task-list">
-      <article
-          v-for="task in listRootTasks"
-          :key="task.id"
-          class="task-list-item"
-      >
-        <div class="task-list-row">
-          <button
-              v-if="hasSubtasks(task)"
-              type="button"
-              class="task-list-toggle"
-              @click="toggleExpanded(task.id)"
-          >
-            <UIcon
-                :name="isExpanded(task.id) ? 'i-heroicons-chevron-down' : 'i-heroicons-chevron-right'"
-                class="h-4 w-4"
-            />
-          </button>
-          <div v-else class="task-list-toggle-placeholder" />
-
-          <button
-              type="button"
-              class="task-list-main"
-              @click="openTaskViaRoute(task)"
-          >
-            <div class="task-list-main-top">
-              <div>
-                <div class="task-list-title">{{ task.name }}</div>
-                <p v-if="task.description" class="task-list-description">{{ task.description }}</p>
-              </div>
-              <div class="task-list-badges">
-                <UBadge variant="soft">{{ normalizeStatus(task.categorie) }}</UBadge>
-                <UBadge v-if="hasSubtasks(task)" variant="outline">
-                  {{ getSubtaskProgress(task).done }} von {{ getSubtaskProgress(task).total }} abgehakt
-                </UBadge>
-              </div>
-            </div>
-
-            <div class="task-list-meta">
-              <span>{{ getAssigneeLabel(task) }}</span>
-              <span v-if="getEntityLabel(projectOptions, task.project?.id || task.project)">
-                {{ getEntityLabel(projectOptions, task.project?.id || task.project) }}
-              </span>
-              <span v-if="getEntityLabel(customerOptions, task.customer?.id || task.customer)">
-                {{ getEntityLabel(customerOptions, task.customer?.id || task.customer) }}
-              </span>
-              <span v-if="getEntityLabel(plantOptions, task.plant?.id || task.plant)">
-                {{ getEntityLabel(plantOptions, task.plant?.id || task.plant) }}
-              </span>
-            </div>
-          </button>
-
-          <UCheckbox
-              v-if="canCreate"
-              :model-value="normalizeStatus(task.categorie) === 'Abgeschlossen'"
-              :disabled="quickCompleteLoadingId === task.id || hasOpenSubtasks(task)"
-              :title="hasOpenSubtasks(task) ? 'Erst alle Unteraufgaben erledigen' : undefined"
-              @update:model-value="(value) => setTaskCompleted(task, value)"
-          />
-        </div>
-
-        <div v-if="hasSubtasks(task) && isExpanded(task.id)" class="task-list-children">
-          <div
-              v-for="subtask in getDependencyTasks(task)"
-              :key="subtask.id"
-              class="task-list-child"
-          >
-            <div class="task-list-child-row">
-              <UCheckbox
-                  v-if="canCreate"
-                  :model-value="normalizeStatus(subtask.categorie) === 'Abgeschlossen'"
-                  :disabled="quickCompleteLoadingId === subtask.id"
-                  @update:model-value="(value) => setTaskCompleted(subtask, value)"
-              />
-              <button
-                  type="button"
-                  class="task-list-child-main"
-                  @click="openTaskViaRoute(subtask)"
-              >
-                <div class="task-list-child-head">
-                  <span class="task-list-child-title">{{ subtask.name }}</span>
-                  <UBadge size="xs" variant="soft">{{ normalizeStatus(subtask.categorie) }}</UBadge>
-                </div>
-                <p v-if="subtask.description" class="task-list-child-description">{{ subtask.description }}</p>
-              </button>
-            </div>
-          </div>
-        </div>
-      </article>
-    </div>
+      <template #categorie-data="{ row }">
+        <UBadge variant="soft">{{ normalizeStatus(row.categorie) }}</UBadge>
+      </template>
+      <template #assignee-data="{ row }">
+        {{ getAssigneeLabel(row) }}
+      </template>
+      <template #project-data="{ row }">
+        {{ getEntityLabel(projectOptions, row.project?.id || row.project) || "-" }}
+      </template>
+      <template #customer-data="{ row }">
+        {{ getEntityLabel(customerOptions, row.customer?.id || row.customer) || "-" }}
+      </template>
+      <template #plant-data="{ row }">
+        {{ getEntityLabel(plantOptions, row.plant?.id || row.plant) || "-" }}
+      </template>
+    </UTable>
     <UAlert
         v-else
         icon="i-heroicons-circle-stack-20-solid"
@@ -1110,28 +516,6 @@ onMounted(async () => {
           <UTextarea v-model="taskForm.description" :disabled="isFormReadonly || !canCreate" />
         </div>
 
-        <div>
-          <label class="form-label">Unteraufgaben</label>
-          <USelectMenu
-              v-model="taskForm.dependencyIds"
-              :options="dependencyOptions"
-              value-attribute="value"
-              option-attribute="label"
-              :disabled="isFormReadonly || !canCreate"
-              multiple
-              searchable
-              clear-search-on-close
-          >
-            <template #label>
-              {{
-                taskForm.dependencyIds?.length
-                    ? `${taskForm.dependencyIds.length} Unteraufgabe${taskForm.dependencyIds.length === 1 ? "" : "n"}`
-                    : "Keine Unteraufgaben"
-              }}
-            </template>
-          </USelectMenu>
-        </div>
-
         <USelectMenu
             v-model="taskForm.categorie"
             :options="STATUS_COLUMNS.map((status) => ({ label: status, value: status }))"
@@ -1246,8 +630,7 @@ onMounted(async () => {
 
 @media (min-width: 1024px) {
   .kanban-grid {
-    grid-template-columns: minmax(0, 1fr) 1px minmax(0, 1fr) 1px minmax(0, 1fr);
-    gap: 0.9rem;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
   }
 }
 
@@ -1263,25 +646,17 @@ onMounted(async () => {
   box-shadow: 0 1px 2px color-mix(in oklab, var(--ui-text) 10%, transparent);
 }
 
-.kanban-divider {
-  display: none;
-}
-
 @media (min-width: 1024px) {
-  .kanban-divider {
-    display: block;
-    align-self: stretch;
+  .kanban-column:not(:first-child)::before {
+    content: "";
+    position: absolute;
+    left: -0.7rem;
+    top: 0.75rem;
+    bottom: 0.75rem;
     width: 1px;
-    border-radius: 999px;
-    background:
-        linear-gradient(
-            to bottom,
-            transparent,
-            color-mix(in oklab, var(--ui-border) 78%, var(--ui-bg-elevated)) 10%,
-            color-mix(in oklab, var(--ui-border) 78%, var(--ui-bg-elevated)) 90%,
-            transparent
-        );
-    opacity: 0.95;
+    background: var(--ui-border);
+    opacity: 0.9;
+    pointer-events: none;
   }
 }
 
@@ -1334,77 +709,6 @@ onMounted(async () => {
   margin-top: 0.6rem;
 }
 
-.kanban-card-dependencies {
-  margin-top: 0.7rem;
-  padding-top: 0.65rem;
-  border-top: 1px dashed color-mix(in oklab, var(--ui-border) 82%, transparent);
-}
-
-.kanban-card-dependencies-label {
-  display: block;
-  margin-bottom: 0.35rem;
-  font-size: 0.72rem;
-  font-weight: 600;
-  letter-spacing: 0.01em;
-  text-transform: uppercase;
-  color: var(--ui-text-dimmed);
-}
-
-.kanban-card-dependency-list {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 0.35rem;
-}
-
-.kanban-card-subtasks {
-  display: flex;
-  flex-direction: column;
-  gap: 0.45rem;
-}
-
-.kanban-subtask-card {
-  width: 100%;
-  text-align: left;
-  border: 1px solid color-mix(in oklab, var(--ui-border) 88%, transparent);
-  background: color-mix(in oklab, var(--ui-bg-elevated) 78%, white 22%);
-  border-radius: 0.55rem;
-  padding: 0.55rem 0.6rem;
-  transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
-}
-
-.kanban-subtask-card:hover {
-  border-color: color-mix(in oklab, var(--ui-primary) 40%, var(--ui-border));
-  background: color-mix(in oklab, var(--ui-bg-elevated) 88%, white 12%);
-  transform: translateY(-1px);
-}
-
-.kanban-subtask-card-head {
-  display: flex;
-  justify-content: space-between;
-  align-items: flex-start;
-  gap: 0.5rem;
-}
-
-.kanban-subtask-card-title {
-  font-size: 0.83rem;
-  font-weight: 600;
-  line-height: 1.15rem;
-  color: var(--ui-text);
-}
-
-.kanban-subtask-card-description {
-  margin-top: 0.3rem;
-  font-size: 0.8rem;
-  line-height: 1.1rem;
-  color: var(--ui-text-dimmed);
-}
-
-.kanban-subtask-more {
-  font-size: 0.78rem;
-  color: var(--ui-text-dimmed);
-  padding: 0.1rem 0.15rem 0;
-}
-
 .kanban-empty {
   border: 1px dashed var(--ui-border);
   color: var(--ui-text-dimmed);
@@ -1413,162 +717,6 @@ onMounted(async () => {
   font-size: 0.875rem;
 }
 
-.waterfall-shell {
-  display: flex;
-  flex-direction: column;
-  gap: 1rem;
-}
-
-.waterfall-card-shell {
-  border: 1px solid var(--ui-border);
-  border-radius: 0.85rem;
-  background: var(--ui-bg);
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
-  box-shadow: 0 1px 2px color-mix(in oklab, var(--ui-text) 10%, transparent);
-  padding: 1rem;
-  gap: 1rem;
-}
-
-.waterfall-chart-wrap {
-  position: relative;
-  min-height: 20rem;
-}
-
-.waterfall-hint {
-  font-size: 0.875rem;
-  color: var(--ui-text-dimmed);
-}
-
-.task-list {
-  display: flex;
-  flex-direction: column;
-  gap: 0.85rem;
-}
-
-.task-list-item {
-  border: 1px solid var(--ui-border);
-  border-radius: 0.85rem;
-  background: var(--ui-bg);
-  overflow: hidden;
-  box-shadow: 0 1px 2px color-mix(in oklab, var(--ui-text) 10%, transparent);
-}
-
-.task-list-row {
-  display: flex;
-  align-items: stretch;
-  gap: 0.75rem;
-  padding: 0.85rem 1rem;
-}
-
-.task-list-toggle,
-.task-list-toggle-placeholder {
-  width: 2rem;
-  flex: 0 0 2rem;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-}
-
-.task-list-toggle {
-  border-radius: 0.55rem;
-  color: var(--ui-text-dimmed);
-  transition: background-color 0.2s ease, color 0.2s ease;
-}
-
-.task-list-toggle:hover {
-  background: var(--ui-bg-muted);
-  color: var(--ui-text);
-}
-
-.task-list-main {
-  flex: 1;
-  text-align: left;
-}
-
-.task-list-main-top {
-  display: flex;
-  justify-content: space-between;
-  align-items: flex-start;
-  gap: 0.8rem;
-}
-
-.task-list-title {
-  font-weight: 600;
-  line-height: 1.25rem;
-  color: var(--ui-text);
-}
-
-.task-list-description {
-  margin-top: 0.3rem;
-  font-size: 0.875rem;
-  line-height: 1.2rem;
-  color: var(--ui-text-dimmed);
-}
-
-.task-list-badges {
-  display: flex;
-  flex-wrap: wrap;
-  justify-content: flex-end;
-  gap: 0.4rem;
-}
-
-.task-list-meta {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 0.75rem;
-  margin-top: 0.6rem;
-  font-size: 0.85rem;
-  color: var(--ui-text-dimmed);
-}
-
-.task-list-children {
-  display: flex;
-  flex-direction: column;
-  gap: 0.55rem;
-  padding: 0 1rem 1rem 3.75rem;
-}
-
-.task-list-child {
-  border: 1px solid color-mix(in oklab, var(--ui-border) 88%, transparent);
-  background: var(--ui-bg-elevated);
-  border-radius: 0.65rem;
-  padding: 0.7rem 0.8rem;
-}
-
-.task-list-child-row {
-  display: flex;
-  align-items: flex-start;
-  gap: 0.7rem;
-}
-
-.task-list-child-main {
-  flex: 1;
-  text-align: left;
-}
-
-.task-list-child-head {
-  display: flex;
-  justify-content: space-between;
-  align-items: flex-start;
-  gap: 0.75rem;
-}
-
-.task-list-child-title {
-  font-size: 0.9rem;
-  font-weight: 600;
-  line-height: 1.2rem;
-  color: var(--ui-text);
-}
-
-.task-list-child-description {
-  margin-top: 0.3rem;
-  font-size: 0.82rem;
-  line-height: 1.15rem;
-  color: var(--ui-text-dimmed);
-}
-
 .form-label {
   display: block;
   font-size: 0.875rem;
diff --git a/frontend/plugins/chartjs.ts b/frontend/plugins/chartjs.ts
index 4d77e70..328257c 100644
--- a/frontend/plugins/chartjs.ts
+++ b/frontend/plugins/chartjs.ts
@@ -1,4 +1,4 @@
-import { Chart, Title, Tooltip, Legend, LineElement, CategoryScale, LinearScale, PointElement, BarElement } from 'chart.js'
+import { Chart, Title, Tooltip, Legend, LineElement, CategoryScale, LinearScale, PointElement } from 'chart.js'
 export default defineNuxtPlugin(() => {
-    Chart.register(CategoryScale, LinearScale, LineElement, Title, Tooltip, Legend, PointElement, BarElement)
-})
+    Chart.register(CategoryScale, LinearScale, LineElement, Title, Tooltip, Legend, PointElement)
+})
\ No newline at end of file