diff --git a/app/src/api.js b/app/src/api.js
index 9563dad..9bcbb72 100644
--- a/app/src/api.js
+++ b/app/src/api.js
@@ -32,6 +32,10 @@ export const api = {
   patchProject: (pid, body) => http('PATCH', `/api/projects/${pid}`, body),
   createProject: (body) => http('POST', '/api/projects', body),
   takeover: (taskId) => http('POST', `/api/tasks/${taskId}/takeover`),
+  patchTask: (taskId, body) => http('PATCH', `/api/tasks/${taskId}`, body),
+  cancelTask: (taskId) => http('POST', `/api/tasks/${taskId}/cancel`),
+  requeueTask: (taskId) => http('POST', `/api/tasks/${taskId}/requeue`),
+  deleteTask: (taskId) => http('DELETE', `/api/tasks/${taskId}`),
   // 附件上传走 multipart（不能用 JSON helper，content-type 由浏览器带 boundary）
   uploadAttachments: async (taskId, files) => {
     const fd = new FormData();
diff --git a/app/src/app.jsx b/app/src/app.jsx
index d1a912b..874fef5 100644
--- a/app/src/app.jsx
+++ b/app/src/app.jsx
@@ -311,6 +311,25 @@ export function App() {
       setTakeoverInfo({ ...info, title: task.title });
     } catch (e) { toast('warn', '接管失败：' + e.message); }
   };
+  // 任务生命周期操作（编辑落库 / 取消 / 重投 / 删除），统一带刷新
+  const taskOps = {
+    patch: async (taskId, body) => {
+      try { await api.patchTask(taskId, body); toast('ok', '已更新'); loadProject(currentId); }
+      catch (e) { toast('warn', '更新失败：' + e.message); }
+    },
+    cancel: async (taskId) => {
+      try { await api.cancelTask(taskId); toast('warn', '已取消'); loadProject(currentId); loadGlobal(); }
+      catch (e) { toast('warn', '取消失败：' + e.message); }
+    },
+    requeue: async (taskId) => {
+      try { await api.requeueTask(taskId); toast('ok', '已重投'); loadProject(currentId); loadGlobal(); }
+      catch (e) { toast('warn', '重投失败：' + e.message); }
+    },
+    del: async (taskId) => {
+      try { await api.deleteTask(taskId); toast('warn', '已删除'); loadProject(currentId); loadGlobal(); }
+      catch (e) { toast('warn', '删除失败：' + e.message); }
+    },
+  };
   const [showNewProject, setShowNewProject] = React.useState(false);
   const createProject = async (body) => {
     try {
@@ -342,7 +361,7 @@ export function App() {
         <window.MaestroKitAgentSection agents={agents} quota={quota} t={t} onOpenStream={setStreamAgent} />
         <window.MaestroKitGateSection approvals={gates} onDecide={decide} t={t} />
         {tasks.length ? (
-          <window.MaestroKitTaskSection tasks={tasks} onToast={toast} onCreate={createTask} onTakeover={takeover} t={t} />
+          <window.MaestroKitTaskSection tasks={tasks} onToast={toast} onCreate={createTask} onTakeover={takeover} taskOps={taskOps} t={t} />
         ) : (
           <div style={{ padding: '46px 0', textAlign: 'center', color: 'var(--faint)', border: '1px dashed var(--line)', borderRadius: 6, marginTop: 18 }}>
             <b style={{ display: 'block', fontSize: 15, color: 'var(--muted)', marginBottom: 6, letterSpacing: '.2em' }}>{t.empty}</b>
diff --git a/design/ui_kits/console/TaskTree.jsx b/design/ui_kits/console/TaskTree.jsx
index 8434fd3..f69de56 100644
--- a/design/ui_kits/console/TaskTree.jsx
+++ b/design/ui_kits/console/TaskTree.jsx
@@ -100,7 +100,7 @@ function FilterBar({ t, kw, setKw, cplxSet, toggleCplx, statusSet, toggleGroup,
   );
 }
 
-function TaskRow({ task, depth, ctx, expandedId, setExpandedId, openIds, toggleOpen, t, byId, cplxOf, onChangeCplx, flashId, onJump, visibleSet, onTakeover }) {
+function TaskRow({ task, depth, ctx, expandedId, setExpandedId, openIds, toggleOpen, t, byId, cplxOf, onChangeCplx, flashId, onJump, visibleSet, onTakeover, taskOps }) {
   const { StatusChip } = window.MaestroDesignSystem_a6a290;
   const kids = (task.children || []).filter((k) => !visibleSet || visibleSet.has(k.id));
   const open = openIds.has(task.id) || !!visibleSet; // 筛选时自动展开可见节点
@@ -140,13 +140,13 @@ function TaskRow({ task, depth, ctx, expandedId, setExpandedId, openIds, toggleO
         <CplxPicker task={task} cplx={cplxOf(task)} onChange={onChangeCplx} />
         <StatusChip status={task.status} label={t.status[task.status]} />
       </div>
-      {expanded ? <TaskDetail task={task} t={t} byId={byId} onJump={onJump} onTakeover={onTakeover} /> : null}
+      {expanded ? <TaskDetail task={task} t={t} byId={byId} onJump={onJump} onTakeover={onTakeover} taskOps={taskOps} /> : null}
       {kids.length && open ? (
         <div style={{ marginLeft: 22 }}>
           {kids.map((k) => (
             <TaskRow key={k.id} task={k} depth={depth + 1} ctx={visibleSet ? visibleSet.ctx.has(k.id) : false}
               expandedId={expandedId} setExpandedId={setExpandedId} openIds={openIds} toggleOpen={toggleOpen} t={t}
-              byId={byId} cplxOf={cplxOf} onChangeCplx={onChangeCplx} flashId={flashId} onJump={onJump} visibleSet={visibleSet} onTakeover={onTakeover} />
+              byId={byId} cplxOf={cplxOf} onChangeCplx={onChangeCplx} flashId={flashId} onJump={onJump} visibleSet={visibleSet} onTakeover={onTakeover} taskOps={taskOps} />
           ))}
         </div>
       ) : null}
@@ -154,23 +154,66 @@ function TaskRow({ task, depth, ctx, expandedId, setExpandedId, openIds, toggleO
   );
 }
 
-function TaskDetail({ task, t, byId, onJump, onTakeover }) {
+function TaskDetail({ task, t, byId, onJump, onTakeover, taskOps }) {
+  const { Button, Input, Select } = window.MaestroDesignSystem_a6a290;
   const label = task.doc ? t.specLabel : task.ops ? t.opsLabel : null;
   const text = task.doc || task.ops;
   const attachments = (task._raw && task._raw.attachments) || [];
+  const ops = taskOps || {};
+  const st = task.status;
+  const canCancel = !['done', 'cancelled'].includes(st);
+  const canRequeue = ['failed', 'needs_attention', 'blocked', 'cancelled'].includes(st);
+
+  const [editing, setEditing] = React.useState(false);
+  const [eTitle, setETitle] = React.useState(task.title);
+  const [ePrio, setEPrio] = React.useState(String((task.prio || 'P1').replace('P', '')));
+  const [eDeps, setEDeps] = React.useState(task.deps || []);
+  const btn = (color) => ({ fontFamily: 'var(--mono)', fontSize: 12, cursor: 'pointer', background: 'transparent', color: `var(--${color})`, border: `1px solid var(--${color}-dim)`, borderRadius: 'var(--radius-sm,4px)', padding: '3px 10px' });
+  const candidates = [...byId.values()].filter((x) => x.id !== task.id);
+  const toggleDep = (id) => setEDeps((d) => (d.includes(id) ? d.filter((x) => x !== id) : [...d, id]));
+  const saveEdit = () => {
+    if (ops.patch) ops.patch(task.id, { title: eTitle.trim(), priority: Number(ePrio), deps: eDeps });
+    setEditing(false);
+  };
+
   return (
     <div style={{ background: 'var(--panel)', borderBottom: '1px solid var(--line)', borderLeft: '2px solid var(--green-dim)', padding: '14px 16px', animation: 'maestro-rise .2s ease both', display: 'grid', gap: 14 }}>
-      {onTakeover || attachments.length ? (
-        <div style={{ display: 'flex', alignItems: 'center', gap: 10, flexWrap: 'wrap' }}>
-          {onTakeover ? (
-            <button onClick={(e) => { e.stopPropagation(); onTakeover(task); }}
-              style={{ fontFamily: 'var(--mono)', fontSize: 12, cursor: 'pointer', background: 'transparent', color: 'var(--cyan)', border: '1px solid var(--cyan-dim)', borderRadius: 'var(--radius-sm,4px)', padding: '3px 10px' }}>
-              ⌨ 人工接管
-            </button>
-          ) : null}
-          {attachments.length ? (
-            <span style={{ fontSize: 11, color: 'var(--faint)' }}>📎 {attachments.map((a) => a.name).join(' · ')}</span>
+      {/* 操作工具条：编辑 / 接管 / 重投 / 取消 / 删除 */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 8, flexWrap: 'wrap' }} onClick={(e) => e.stopPropagation()}>
+        {ops.patch ? <button onClick={() => setEditing(!editing)} style={btn(editing ? 'green' : 'muted')}>✎ 编辑</button> : null}
+        {onTakeover ? <button onClick={() => onTakeover(task)} style={btn('cyan')}>⌨ 人工接管</button> : null}
+        {ops.requeue && canRequeue ? <button onClick={() => ops.requeue(task.id)} style={btn('green')}>↻ 重投</button> : null}
+        {ops.cancel && canCancel ? <button onClick={() => ops.cancel(task.id)} style={btn('amber')}>⊘ 取消</button> : null}
+        {ops.del ? <button onClick={() => { if (confirm('删除任务「' + task.title + '」?子任务一并删除,不可恢复。')) ops.del(task.id); }} style={btn('red')}>🗑 删除</button> : null}
+        {attachments.length ? <span style={{ marginLeft: 'auto', fontSize: 11, color: 'var(--faint)' }}>📎 {attachments.map((a) => a.name).join(' · ')}</span> : null}
+      </div>
+      {/* 编辑表单 */}
+      {editing ? (
+        <div style={{ display: 'grid', gap: 12, padding: 12, border: '1px solid var(--line)', borderRadius: 6, background: 'var(--bg-deep)' }} onClick={(e) => e.stopPropagation()}>
+          <Input label="标题" value={eTitle} onChange={setETitle} style={{ width: '100%' }} />
+          <div style={{ display: 'flex', gap: 12, alignItems: 'flex-end', flexWrap: 'wrap' }}>
+            <Select label={t.priority} value={ePrio} onChange={setEPrio} options={[{ value: '0', label: t.p0 }, { value: '1', label: t.p1 }, { value: '2', label: t.p2 }]} />
+          </div>
+          {candidates.length ? (
+            <div>
+              <div style={{ fontSize: 10.5, color: 'var(--muted)', letterSpacing: '.12em', marginBottom: 6 }}>依赖（点选其他任务）</div>
+              <div style={{ display: 'flex', flexWrap: 'wrap', gap: 6, maxHeight: 120, overflowY: 'auto' }}>
+                {candidates.map((c) => {
+                  const on = eDeps.includes(c.id);
+                  return (
+                    <button key={c.id} onClick={() => toggleDep(c.id)}
+                      style={{ fontFamily: 'var(--mono)', fontSize: 11, cursor: 'pointer', padding: '2px 8px', borderRadius: 3, border: '1px solid ' + (on ? 'var(--green-dim)' : 'var(--line)'), background: on ? 'var(--green-dim)' : 'transparent', color: on ? '#fff' : 'var(--muted)', maxWidth: 220, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+                      {on ? '✓ ' : ''}{c.title}
+                    </button>
+                  );
+                })}
+              </div>
+            </div>
           ) : null}
+          <div style={{ display: 'flex', gap: 10, justifyContent: 'flex-end' }}>
+            <Button onClick={() => setEditing(false)}>{t.cancel}</Button>
+            <Button variant="solid" disabled={!eTitle.trim()} onClick={saveEdit}>{t.save}</Button>
+          </div>
         </div>
       ) : null}
       {label ? (
@@ -267,7 +310,7 @@ function NewTaskPanel({ tasks, onCancel, onCreate, t }) {
   );
 }
 
-function TaskSection({ tasks, onToast, onCreate, onTakeover, t }) {
+function TaskSection({ tasks, onToast, onCreate, onTakeover, taskOps, t }) {
   const { Button, SectionHead } = window.MaestroDesignSystem_a6a290;
   const [expandedId, setExpandedId] = React.useState(null);
   const [openIds, setOpenIds] = React.useState(() => new Set(['t1']));
@@ -279,7 +322,10 @@ function TaskSection({ tasks, onToast, onCreate, onTakeover, t }) {
   const [flashId, setFlashId] = React.useState(null);
   const byId = React.useMemo(() => kitFlatten(tasks), [tasks]);
   const cplxOf = (task) => cplxOverride[task.id] || task.cplx;
-  const onChangeCplx = (id, v) => setCplxOverride((m) => ({ ...m, [id]: v }));
+  const onChangeCplx = (id, v) => {
+    setCplxOverride((m) => ({ ...m, [id]: v }));   // 乐观显示
+    if (taskOps && taskOps.patch) taskOps.patch(id, { complexity: v });  // 落库
+  };
   const toggleOpen = (id) => setOpenIds((prev) => {
     const next = new Set(prev); next.has(id) ? next.delete(id) : next.add(id); return next;
   });
@@ -347,7 +393,7 @@ function TaskSection({ tasks, onToast, onCreate, onTakeover, t }) {
         {roots.map((tk) => (
           <TaskRow key={tk.id} task={tk} depth={0} ctx={visibleSet ? visibleSet.ctx.has(tk.id) : false}
             expandedId={expandedId} setExpandedId={setExpandedId} openIds={openIds} toggleOpen={toggleOpen} t={t}
-            byId={byId} cplxOf={cplxOf} onChangeCplx={onChangeCplx} flashId={flashId} onJump={onJump} visibleSet={visibleSet} onTakeover={onTakeover} />
+            byId={byId} cplxOf={cplxOf} onChangeCplx={onChangeCplx} flashId={flashId} onJump={onJump} visibleSet={visibleSet} onTakeover={onTakeover} taskOps={taskOps} />
         ))}
       </div>
     </section>