diff --git a/src/components/layout/activity-panel.tsx b/src/components/layout/activity-panel.tsx
index 37a9d6d05..a63982398 100644
--- a/src/components/layout/activity-panel.tsx
+++ b/src/components/layout/activity-panel.tsx
@@ -3,7 +3,7 @@ import {
   ChevronUp, ChevronDown, Loader2, CheckCircle2, AlertCircle,
   FileText, Users, Lightbulb, BookOpen, GitMerge, BarChart3, HelpCircle, Layout,
   RotateCcw, X, Clock, TrendingUp, Target, Pause, Play,
-  ArrowUp, ArrowDown,
+  ArrowUp, ArrowDown, Trash2,
 } from "lucide-react"
 import { useTranslation } from "react-i18next"
 import { useAppDialog } from "@/stores/app-dialog-store"
@@ -20,6 +20,10 @@ import {
   cancelTask,
   cancelTasks,
   cancelAllTasks,
+  removeTask,
+  removeTasks,
+  hasActiveRun,
+  retainQueuedSelection,
   movePendingTask,
   pauseProcessing,
   resumeProcessing,
@@ -154,6 +158,26 @@ export function ActivityPanel() {
     })
   }, [project, selectedTaskIds])
 
+  const syncAfterRemoval = useCallback(() => {
+    const remaining = [...getQueue()]
+    setSelectedTaskIds((current) => retainQueuedSelection(current, remaining))
+    setQueueTasks(remaining)
+  }, [])
+
+  const handleRemoveSelected = useCallback(async () => {
+    if (!project) return
+    const removable = queueTasks.filter(
+      (task) => selectedTaskIds.has(task.id) && isRemovable(task),
+    )
+    if (removable.length === 0) return
+    if (!(await appDialog.confirm({
+      message: t("activity.removeSelectedConfirm", { count: removable.length }),
+      variant: "destructive",
+    }))) return
+    await removeTasks(removable.map((task) => task.id))
+    syncAfterRemoval()
+  }, [appDialog, project, queueTasks, selectedTaskIds, syncAfterRemoval, t])
+
   const handleMoveTask = useCallback((taskId: string, direction: "up" | "down") => {
     void movePendingTask(taskId, direction).then(() => setQueueTasks([...getQueue()]))
   }, [])
@@ -172,6 +196,11 @@ export function ActivityPanel() {
     cancelTask(taskId)
   }, [project])
 
+  const handleIngestRemove = useCallback((taskId: string) => {
+    if (!project) return
+    void removeTask(taskId).then(syncAfterRemoval)
+  }, [project, syncAfterRemoval])
+
   const handleCancelAll = useCallback(async () => {
     if (!project) return
     const activeCount = queueSummary.pending + queueSummary.processing
@@ -346,6 +375,12 @@ export function ActivityPanel() {
                   >
                     {t("activity.cancelSelected")}
                   </button>
+                  <button
+                    onClick={handleRemoveSelected}
+                    className="rounded px-1.5 py-0.5 text-destructive hover:bg-destructive/10"
+                  >
+                    {t("common.remove")}
+                  </button>
                 </>
               )}
             </div>
@@ -435,7 +470,7 @@ export function ActivityPanel() {
 
           {/* Queue tasks */}
           {visibleQueueTasks.map((task) => (
-            <QueueRow key={task.id} task={task} selected={selectedTaskIds.has(task.id)} onSelect={toggleTaskSelection} onRetry={handleIngestRetry} onCancel={handleIngestCancel} onMove={handleMoveTask} />
+            <QueueRow key={task.id} task={task} selected={selectedTaskIds.has(task.id)} onSelect={toggleTaskSelection} onRetry={handleIngestRetry} onCancel={handleIngestCancel} onRemove={handleIngestRemove} onMove={handleMoveTask} />
           ))}
           {orderedQueueTasks.length > visibleQueueTasks.length && (
             <div className="border-b border-border/50 px-3 py-2 text-center text-[10px] text-muted-foreground">
@@ -471,12 +506,19 @@ export function ActivityPanel() {
   )
 }
 
-function QueueRow({ task, selected, onSelect, onRetry, onCancel, onMove }: {
+/** Stopped, and its run has already released the worker slot. */
+function isRemovable(task: IngestTask): boolean {
+  return (task.status === "failed" || task.status === "cancelled") &&
+    !hasActiveRun(task.id)
+}
+
+function QueueRow({ task, selected, onSelect, onRetry, onCancel, onRemove, onMove }: {
   task: IngestTask
   selected: boolean
   onSelect: (id: string) => void
   onRetry: (id: string) => void
   onCancel: (id: string) => void
+  onRemove: (id: string) => void
   onMove: (id: string, direction: "up" | "down") => void
 }) {
   const { t } = useTranslation()
@@ -517,6 +559,15 @@ function QueueRow({ task, selected, onSelect, onRetry, onCancel, onMove }: {
               <RotateCcw className="h-3 w-3" />
             </button>
           )}
+          {isRemovable(task) && (
+            <button
+              onClick={() => onRemove(task.id)}
+              className="p-0.5 rounded hover:bg-destructive/20 text-muted-foreground hover:text-destructive"
+              title={t("common.remove")}
+            >
+              <Trash2 className="h-3 w-3" />
+            </button>
+          )}
           {task.status === "pending" && (
             <>
               <button onClick={() => onMove(task.id, "up")} className="rounded p-0.5 text-muted-foreground hover:bg-accent" title={t("activity.moveUp")}>
diff --git a/src/i18n/en.json b/src/i18n/en.json
index 457594aa0..2a85e4ad9 100644
--- a/src/i18n/en.json
+++ b/src/i18n/en.json
@@ -5,7 +5,7 @@
   },
   "common": {
     "retry": "Retry", "cancel": "Cancel", "ignore": "Ignore", "close": "Close", "ok": "OK", "confirm": "Confirm", "notice": "Notice",
-    "dismiss": "Dismiss", "loading": "Loading...", "optional": "optional"
+    "dismiss": "Dismiss", "remove": "Remove", "loading": "Loading...", "optional": "optional"
   },
   "layout": { "showSidebar": "Show sidebar", "hideSidebar": "Hide sidebar" },
   "errors": { "generic": "Something went wrong" },
@@ -1065,6 +1065,7 @@
     "cancelAll": "Cancel all",
     "cancelAllTitle": "Cancel all queued and in-progress tasks",
     "cancelAllConfirm": "Cancel all {{count}} queued/processing ingest tasks? Partial files from the in-progress task will be removed. Cancelled tasks stay in the queue so you can restart them.",
+    "removeSelectedConfirm": "Permanently remove the selected stopped ingest tasks from the queue? Selected: {{count}}. Removal cannot be undone.",
     "retryFailed": "Restart stopped",
     "retryFailedTitle": "Restart all failed and cancelled ingest tasks",
     "selectAll": "Select all",
diff --git a/src/i18n/it.json b/src/i18n/it.json
index 5711f761c..d932eae6a 100644
--- a/src/i18n/it.json
+++ b/src/i18n/it.json
@@ -5,7 +5,7 @@
   },
   "common": {
     "retry": "Riprova", "cancel": "Annulla", "ignore": "Ignora", "close": "Chiudi", "ok": "OK", "confirm": "Conferma", "notice": "Avviso",
-    "dismiss": "Nascondi", "loading": "Caricamento...", "optional": "opzionale"
+    "dismiss": "Nascondi", "remove": "Rimuovi", "loading": "Caricamento...", "optional": "opzionale"
   },
   "layout": { "showSidebar": "Mostra la barra laterale", "hideSidebar": "Nascondi la barra laterale" },
   "errors": { "generic": "Qualcosa è andato storto" },
@@ -1065,6 +1065,7 @@
     "cancelAll": "Annulla tutto",
     "cancelAllTitle": "Annulla tutte le attività in coda e in corso",
     "cancelAllConfirm": "Annullare tutte le {{count}} attività di elaborazione in coda o in corso? I file parziali dell'attività in corso verranno rimossi. Le attività annullate restano in coda, così puoi riavviarle.",
+    "removeSelectedConfirm": "Rimuovere definitivamente dalla coda le attività di elaborazione interrotte selezionate? Selezione: {{count}}. L\u0027operazione non può essere annullata.",
     "retryFailed": "Riavvia le interrotte",
     "retryFailedTitle": "Riavvia tutte le attività di elaborazione non riuscite e annullate",
     "selectAll": "Seleziona tutto",
diff --git a/src/i18n/ru.json b/src/i18n/ru.json
index 80a591d7c..34d2e3c64 100644
--- a/src/i18n/ru.json
+++ b/src/i18n/ru.json
@@ -5,7 +5,7 @@
   },
   "common": {
     "retry": "Попробовать снова", "cancel": "Отмена", "ignore": "Игнорировать", "close": "Закрыть", "ok": "ОК", "confirm": "Подтверждение", "notice": "Уведомление",
-    "dismiss": "Скрыть", "loading": "Загрузка...", "optional": "необязательно"
+    "dismiss": "Скрыть", "remove": "Удалить", "loading": "Загрузка...", "optional": "необязательно"
   },
   "layout": { "showSidebar": "Показать боковую панель", "hideSidebar": "Скрыть боковую панель" },
   "errors": { "generic": "Что-то пошло не так" },
@@ -1065,6 +1065,7 @@
     "cancelAll": "Отменить все",
     "cancelAllTitle": "Отменить все задачи в очереди и выполняемые",
     "cancelAllConfirm": "Отменить все {{count}} задач(и) обработки в очереди/выполняемые? Частичные файлы из выполняемой задачи будут удалены. Отменённые задачи остаются в очереди, чтобы вы могли запустить их заново.",
+    "removeSelectedConfirm": "Безвозвратно удалить выбранные остановленные задачи обработки из очереди? Выбрано: {{count}}. Отменить это действие нельзя.",
     "retryFailed": "Перезапустить остановленные",
     "retryFailedTitle": "Перезапустить все неудавшиеся и отменённые задачи обработки",
     "selectAll": "Выделить всё",
diff --git a/src/i18n/zh.json b/src/i18n/zh.json
index adc9e3dac..c3b75ce4a 100644
--- a/src/i18n/zh.json
+++ b/src/i18n/zh.json
@@ -5,7 +5,7 @@
   },
   "common": {
     "retry": "重试", "cancel": "取消", "ignore": "忽略", "close": "关闭", "ok": "确定", "confirm": "确认", "notice": "提示",
-    "dismiss": "关闭", "loading": "加载中……", "optional": "可选"
+    "dismiss": "关闭", "remove": "移除", "loading": "加载中……", "optional": "可选"
   },
   "layout": { "showSidebar": "展开侧栏", "hideSidebar": "收起侧栏" },
   "errors": { "generic": "出现错误" },
@@ -1065,6 +1065,7 @@
     "cancelAll": "全部取消",
     "cancelAllTitle": "取消所有排队和正在处理的任务",
     "cancelAllConfirm": "要取消全部 {{count}} 个排队/处理中摄取任务吗？正在处理任务产生的部分文件会被移除；已取消任务会保留在队列中，之后可以重新启动。",
+    "removeSelectedConfirm": "要将选中的已停止摄取任务从队列中永久移除吗？已选择：{{count}}。移除后无法重新启动。",
     "retryFailed": "重启已停止任务",
     "retryFailedTitle": "重新启动所有失败和已取消的摄取任务",
     "selectAll": "全选",
diff --git a/src/lib/ingest-queue.test.ts b/src/lib/ingest-queue.test.ts
index 633c1f124..3859fff6a 100644
--- a/src/lib/ingest-queue.test.ts
+++ b/src/lib/ingest-queue.test.ts
@@ -57,6 +57,10 @@ import {
   retryAllFailedTasks,
   cancelTask,
   cancelTasks,
+  removeTask,
+  removeTasks,
+  hasActiveRun,
+  retainQueuedSelection,
   discardTasksForSources,
   cancelAllTasks,
   movePendingTask,
@@ -578,6 +582,118 @@ describe("ingest-queue — cancel", () => {
     expect(getQueue().find((t) => t.sourcePath === "first.md")).toBeDefined()
   })
 
+  it("removeTask drops a cancelled task but leaves active ones alone", async () => {
+    mockAutoIngest.mockImplementation(() => new Promise(() => {})) // block first task
+
+    await enqueueBatch(TEST_ID, [
+      { sourcePath: "first.md", folderContext: "" },
+      { sourcePath: "second.md", folderContext: "" },
+    ])
+    await flushMicrotasks(2)
+
+    const second = getQueue().find((t) => t.sourcePath === "second.md")!
+    await cancelTask(second.id)
+    expect(await removeTask(second.id)).toBe(true)
+    expect(getQueue().some((t) => t.sourcePath === "second.md")).toBe(false)
+
+    // Processing tasks are not removable — cancel them first.
+    const first = getQueue().find((t) => t.sourcePath === "first.md")!
+    expect(await removeTask(first.id)).toBe(false)
+    expect(getQueue().some((t) => t.sourcePath === "first.md")).toBe(true)
+  })
+
+  it("removeTask drops a failed task and persists the removal", async () => {
+    mockReadFile.mockResolvedValue(JSON.stringify([
+      { id: "ingest-failed-a", sourcePath: "a.md", folderContext: "", status: "failed", addedAt: 1, error: "boom", retryCount: 3 },
+      { id: "ingest-failed-b", sourcePath: "b.md", folderContext: "", status: "failed", addedAt: 2, error: "boom", retryCount: 3 },
+    ]))
+    await restoreQueue(TEST_ID, TEST_PATH)
+    mockWriteFile.mockClear()
+
+    expect(await removeTask("ingest-failed-a")).toBe(true)
+    expect(getQueue().map((t) => t.id)).toEqual(["ingest-failed-b"])
+    const calls = mockWriteFile.mock.calls
+    const [path, snapshot] = calls[calls.length - 1]
+    expect(path).toBe(`${TEST_PATH}/.llm-wiki/ingest-queue.json`)
+    // Not just "the removed ID is gone" — a snapshot of `[]` would satisfy that
+    // while silently losing the survivor on the next restore.
+    expect(JSON.parse(snapshot).map((t: { id: string }) => t.id))
+      .toEqual(["ingest-failed-b"])
+  })
+
+  it("removeTask refuses a cancelled task whose run has not exited yet", async () => {
+    // autoIngest never settles, so the run keeps its slot in activeRuns even
+    // after the abort. Status is "cancelled" but the worker is still alive.
+    mockAutoIngest.mockImplementation(() => new Promise(() => {}))
+
+    await enqueueBatch(TEST_ID, [{ sourcePath: "in-flight.md", folderContext: "" }])
+    await flushMicrotasks(2)
+
+    const task = getQueue().find((t) => t.sourcePath === "in-flight.md")!
+    expect(task.status).toBe("processing")
+    await cancelTask(task.id)
+    expect(getQueue().find((t) => t.id === task.id)!.status).toBe("cancelled")
+
+    // Removing now would free the sourcePath for a re-import, and the new task
+    // would get a fresh ID that processNext's activeRuns guard cannot match.
+    expect(await removeTask(task.id)).toBe(false)
+    expect(await removeTasks([task.id])).toBe(0)
+    expect(getQueue().some((t) => t.id === task.id)).toBe(true)
+  })
+
+  it("removeTasks drops only the stopped tasks in the selection", async () => {
+    mockAutoIngest.mockImplementation(() => new Promise(() => {})) // block first task
+
+    await enqueueBatch(TEST_ID, [
+      { sourcePath: "processing.md", folderContext: "" },
+      { sourcePath: "cancelled.md", folderContext: "" },
+      { sourcePath: "pending.md", folderContext: "" },
+    ])
+    await flushMicrotasks(2)
+
+    const cancelled = getQueue().find((t) => t.sourcePath === "cancelled.md")!
+    await cancelTask(cancelled.id)
+
+    const removed = await removeTasks(getQueue().map((t) => t.id))
+    expect(removed).toBe(1)
+    expect(getQueue().map((t) => t.sourcePath)).toEqual(["processing.md", "pending.md"])
+
+    // Unknown IDs and an empty selection are no-ops, not throws.
+    expect(await removeTasks(["ingest-does-not-exist"])).toBe(0)
+    expect(await removeTasks([])).toBe(0)
+  })
+
+  it("retainQueuedSelection keeps rows the core refused to remove", async () => {
+    mockAutoIngest.mockImplementation(() => new Promise(() => {})) // block first task
+
+    await enqueueBatch(TEST_ID, [
+      { sourcePath: "stuck.md", folderContext: "" },
+      { sourcePath: "gone.md", folderContext: "" },
+      { sourcePath: "kept.md", folderContext: "" },
+    ])
+    await flushMicrotasks(2)
+
+    const stuck = getQueue().find((t) => t.sourcePath === "stuck.md")!
+    const gone = getQueue().find((t) => t.sourcePath === "gone.md")!
+    const kept = getQueue().find((t) => t.sourcePath === "kept.md")!
+
+    await cancelTask(stuck.id) // cancelled, but its run never settles
+    await cancelTask(gone.id)
+    expect(await removeTask(gone.id)).toBe(true)
+
+    const next = retainQueuedSelection(new Set([stuck.id, gone.id, kept.id]), getQueue())
+    expect(next.has(gone.id)).toBe(false) // actually removed
+    expect(next.has(stuck.id)).toBe(true) // guard refused it — must stay selected
+    expect(next.has(kept.id)).toBe(true) // untouched
+    // ...and the panel hides its remove button rather than offering a no-op.
+    expect(hasActiveRun(stuck.id)).toBe(true)
+    expect(hasActiveRun(kept.id)).toBe(false)
+
+    // Unchanged membership returns the same Set so React can skip the update.
+    const unchanged = new Set([stuck.id, kept.id])
+    expect(retainQueuedSelection(unchanged, getQueue())).toBe(unchanged)
+  })
+
   it("batch-cancelled tasks can be batch-restarted", async () => {
     mockAutoIngest.mockImplementation(() => new Promise(() => {}))
     await enqueueBatch(TEST_ID, [
diff --git a/src/lib/ingest-queue.ts b/src/lib/ingest-queue.ts
index 7778767e4..232aaab3c 100644
--- a/src/lib/ingest-queue.ts
+++ b/src/lib/ingest-queue.ts
@@ -581,6 +581,69 @@ export async function cancelTasks(taskIds: readonly string[]): Promise<number> {
   return targets.length
 }
 
+/**
+ * Drop stopped (failed/cancelled) tasks from the queue for good. Restartable
+ * entries are retained until the user explicitly removes them here; pending
+ * and processing tasks must be cancelled first and are skipped.
+ *
+ * A `cancelled` status only records that cancellation was *requested* — the
+ * run keeps its worker slot until it observes the AbortSignal, and a commit
+ * already past the interruptible point still runs to completion. Removing the
+ * entry while that run is alive would drop the sourcePath that enqueueBatch
+ * dedupes against, so re-importing the same source would mint a fresh task ID
+ * that the `!activeRuns.has(task.id)` guard in processNext no longer covers.
+ * The two runs cannot interleave their writes — autoIngest holds a per-source
+ * project lock — but the newcomer would take a worker slot and sit in the
+ * Activity Panel as "processing" while it blocks on that lock. Skip tasks with
+ * a live run; they become removable once it exits.
+ */
+export async function removeTasks(taskIds: readonly string[]): Promise<number> {
+  const selected = new Set(taskIds)
+  const targets = queue.filter(
+    (task) =>
+      task.projectId === currentProjectId &&
+      selected.has(task.id) &&
+      (task.status === "failed" || task.status === "cancelled") &&
+      !activeRuns.has(task.id),
+  )
+  if (targets.length === 0) return 0
+  const doomed = new Set(targets.map((task) => task.id))
+  queue = queue.filter((task) => !doomed.has(task.id))
+  await saveQueue(currentProjectPath)
+  return targets.length
+}
+
+/**
+ * True while a run still owns this task's worker slot. Callers use it to hide
+ * the remove affordance instead of offering a click that {@link removeTasks}
+ * would refuse: cancellation is only *requested* synchronously, so a task can
+ * read as `cancelled` for a beat while its run is still winding down.
+ */
+export function hasActiveRun(taskId: string): boolean {
+  return activeRuns.has(taskId)
+}
+
+/**
+ * Narrow a selection to the tasks the queue still holds, preserving the
+ * original Set when nothing was dropped so React state keeps its identity.
+ * Used after a removal rather than clearing the selection outright, because
+ * {@link removeTasks} skips tasks with a live run and those rows must stay
+ * selected instead of appearing to have been removed.
+ */
+export function retainQueuedSelection(
+  selected: Set<string>,
+  tasks: readonly IngestTask[],
+): Set<string> {
+  const live = new Set(tasks.map((task) => task.id))
+  const next = new Set([...selected].filter((id) => live.has(id)))
+  return next.size === selected.size ? selected : next
+}
+
+/** Single-task convenience wrapper around {@link removeTasks}. */
+export async function removeTask(taskId: string): Promise<boolean> {
+  return (await removeTasks([taskId])) === 1
+}
+
 /**
  * Permanently discard active-project tasks for sources that no longer exist.
  * Unlike cancelTasks, this does not retain restartable queue entries because