feat: 定时任务管理 + 会话只读分享

定时任务：
- 管理员可查看/编辑/删除/触发全部用户的定时任务（新增 /api/scheduled-tasks/admin/* 接口与管理页）
- 卡死任务恢复：单次执行超 30 分钟超时重试（最多 3 次），耗尽后标记 failed；看门狗回收服务重启遗留的「执行中」任务

会话分享：
- 新增「只读链接」分享模式，生成公开免登录的只读对话快照页（/share/:code）
- 公开接口 /api/public/shares/* 提供对话快照与图片附件

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend-web/src/App.tsx

@@ -13,6 +13,7 @@ import { HashRouter, useLocation } from "react-router-dom";
 import LandingPage from "./pages/LandingPage";
 import LoginPage from "./pages/LoginPage";
 import PageRoutes from "./pages/PageRoutes";
+import PublicSharePage from "./pages/PublicSharePage";
 import { NotFoundPage } from "./pages/NotFoundPage";
 
 function AppProviders({ children }: { children: React.ReactNode }) {
@@ -47,6 +48,8 @@ export function App() {
           <Route path="/login" element={<LoginPage />} />
           <Route path="/login/:username" element={<LoginPage />} />
           <Route path="/landing" element={<LandingPage />} />
+          {/* Public read-only conversation viewer — no authentication. */}
+          <Route path="/share/:shareCode" element={<PublicSharePage />} />
           <Route path="/page/*" element={<PageRoutes />} />
           <Route path="*" element={<NotFoundPage />} />
         </Routes>

frontend-web/src/components/workspace/messages/context.ts

@@ -6,6 +6,13 @@ import type { AgentThreadState } from "@/core/threads";
 export interface ThreadContextType {
   thread: BaseStream<AgentThreadState>;
   isMock?: boolean;
+  /**
+   * When set, the conversation is rendered from a public read-only share.
+   * Artifact/image URLs then resolve to the unauthenticated
+   * `/api/public/shares/{code}/files/...` endpoint instead of the
+   * auth-gated thread artifact route.
+   */
+  publicShareCode?: string;
 }
 
 export const ThreadContext = createContext<ThreadContextType | undefined>(

frontend-web/src/components/workspace/messages/message-list-item.tsx

@@ -2,6 +2,8 @@ import type { Message } from "@langchain/langgraph-sdk";
 import { FileIcon, Loader2Icon } from "lucide-react";
 import {
   memo,
+  useCallback,
+  useContext,
   useMemo,
   type AnchorHTMLAttributes,
   type ImgHTMLAttributes,
@@ -23,6 +25,7 @@ import {
 import { Task, TaskTrigger } from "@/components/ai-elements/task";
 import { Badge } from "@/components/ui/badge";
 import { resolveArtifactURL } from "@/core/artifacts/utils";
+import { getBackendBaseURL } from "@/core/config";
 import { useI18n } from "@/core/i18n/hooks";
 import {
   extractContentFromMessage,
@@ -37,9 +40,33 @@ import { cn } from "@/lib/utils";
 
 import { CopyButton } from "../copy-button";
 
+import { ThreadContext } from "./context";
 import { MarkdownContent } from "./markdown-content";
 import { MessageTokenUsage } from "./message-token-usage";
 
+/**
+ * Resolve an in-conversation file path to a fetchable URL.
+ *
+ * On a public read-only share (`ThreadContext.publicShareCode` set) artifact
+ * URLs point at the unauthenticated `/api/public/shares/{code}/files/...`
+ * endpoint; otherwise they use the normal auth-gated thread artifact route.
+ */
+function useArtifactResolver(threadId: string): (path: string) => string {
+  const publicShareCode = useContext(ThreadContext)?.publicShareCode;
+  return useCallback(
+    (path: string) => {
+      if (publicShareCode) {
+        const normalized = path.startsWith("/") ? path : `/${path}`;
+        return `${getBackendBaseURL()}/api/public/shares/${encodeURIComponent(
+          publicShareCode,
+        )}/files${normalized}`;
+      }
+      return resolveArtifactURL(path, threadId);
+    },
+    [publicShareCode, threadId],
+  );
+}
+
 export function MessageListItem({
   className,
   message,
@@ -101,6 +128,7 @@ function MessageImage({
   threadId: string;
   maxWidth?: string;
 }) {
+  const resolveArtifact = useArtifactResolver(threadId);
   if (!src) return null;
 
   const imgClassName = cn("overflow-hidden rounded-lg", `max-w-[${maxWidth}]`);
@@ -109,7 +137,7 @@ function MessageImage({
     return <img className={imgClassName} src={src} alt={alt} {...props} />;
   }
 
-  const url = src.startsWith("/mnt/") ? resolveArtifactURL(src, threadId) : src;
+  const url = src.startsWith("/mnt/") ? resolveArtifact(src) : src;
 
   return (
     <a href={url} target="_blank" rel="noopener noreferrer">
@@ -133,6 +161,7 @@ function MessageContent_({
 }) {
   const rehypePlugins = useRehypeSplitWordsIntoSpans(isLoading);
   const isHuman = message.type === "human";
+  const resolveArtifact = useArtifactResolver(threadId);
   const components = useMemo(
     () => ({
       img: (props: ImgHTMLAttributes<HTMLImageElement>) => (
@@ -140,7 +169,7 @@ function MessageContent_({
       ),
       a: ({ href, ...props }: AnchorHTMLAttributes<HTMLAnchorElement>) => {
         if (href?.startsWith("/mnt/")) {
-          const url = resolveArtifactURL(href, threadId);
+          const url = resolveArtifact(href);
           return (
             <a
               {...props}
@@ -153,7 +182,7 @@ function MessageContent_({
         return <a {...props} href={href} />;
       },
     }),
-    [threadId],
+    [threadId, resolveArtifact],
   );
 
   const rawContent = extractContentFromMessage(message);
@@ -346,6 +375,7 @@ function RichFileCard({
   threadId: string;
 }) {
   const { t } = useI18n();
+  const resolveArtifact = useArtifactResolver(threadId);
   const isUploading = file.status === "uploading";
   const isImage = isImageFile(file.filename);
 
@@ -378,7 +408,7 @@ function RichFileCard({
 
   if (!file.path) return null;
 
-  const fileUrl = resolveArtifactURL(file.path, threadId);
+  const fileUrl = resolveArtifact(file.path);
 
   if (isImage) {
     return (

frontend-web/src/components/workspace/recent-chat-list.tsx

@@ -42,6 +42,7 @@ import {
   SidebarMenuButton,
   SidebarMenuItem,
 } from "@/components/ui/sidebar";
+import { ShareConversationDialog } from "@/components/workspace/thread-share-dialogs";
 import { getAPIClient } from "@/core/api";
 import { useI18n } from "@/core/i18n/hooks";
 import {
@@ -76,6 +77,9 @@ export function RecentChatList() {
   const [renameThreadId, setRenameThreadId] = useState<string | null>(null);
   const [renameValue, setRenameValue] = useState("");
 
+  // Share dialog state — the conversation whose share code is being shown.
+  const [shareThreadId, setShareThreadId] = useState<string | null>(null);
+
   const handleDelete = useCallback(
     (threadId: string) => {
       deleteThread({ threadId });
@@ -115,18 +119,10 @@ export function RecentChatList() {
     }
   }, [renameThread, renameThreadId, renameValue]);
 
-  const handleShare = useCallback(
-    async (thread: AgentThread) => {
-      const shareUrl = `${window.location.origin}${pathOfThread(thread)}`;
-      try {
-        await navigator.clipboard.writeText(shareUrl);
-        toast.success(t.clipboard.linkCopied);
-      } catch {
-        toast.error(t.clipboard.failedToCopyToClipboard);
-      }
-    },
-    [t],
-  );
+  const handleShare = useCallback((thread: AgentThread) => {
+    // Opens the share-code dialog; the recipient imports a copy via that code.
+    setShareThreadId(thread.thread_id);
+  }, []);
 
   const handleExport = useCallback(
     async (thread: AgentThread, format: "markdown" | "json") => {
@@ -173,89 +169,89 @@ export function RecentChatList() {
             <div className="flex w-full flex-col gap-1">
               {visibleThreads.map((thread) => {
                 const isActive = pathOfThread(thread) === pathname;
-                return (
-                  <SidebarMenuItem
-                    key={thread.thread_id}
-                    className="group/side-menu-item"
-                  >
-                    <SidebarMenuButton isActive={isActive} asChild>
-                      <Link
-                        className="text-muted-foreground block w-full whitespace-nowrap group-hover/side-menu-item:overflow-hidden"
-                        href={pathOfThread(thread)}
-                      >
-                        {titleOfThread(thread)}
-                      </Link>
-                    </SidebarMenuButton>
-                    {env.NEXT_PUBLIC_STATIC_WEBSITE_ONLY !== "true" && (
-                      <DropdownMenu>
-                        <DropdownMenuTrigger asChild>
-                          <SidebarMenuAction
-                            showOnHover
-                            className="bg-background/50 hover:bg-background"
-                          >
-                            <MoreHorizontal />
-                            <span className="sr-only">{t.common.more}</span>
-                          </SidebarMenuAction>
-                        </DropdownMenuTrigger>
-                        <DropdownMenuContent
-                          className="w-48 rounded-lg"
-                          side={"right"}
-                          align={"start"}
-                        >
-                          <DropdownMenuItem
-                            onSelect={() =>
-                              handleRenameClick(
-                                thread.thread_id,
-                                titleOfThread(thread),
-                              )
-                            }
-                          >
-                            <Pencil className="text-muted-foreground" />
-                            <span>{t.common.rename}</span>
-                          </DropdownMenuItem>
-                          <DropdownMenuItem
-                            onSelect={() => handleShare(thread)}
-                          >
-                            <Share2 className="text-muted-foreground" />
-                            <span>{t.common.share}</span>
-                          </DropdownMenuItem>
-                          <DropdownMenuSub>
-                            <DropdownMenuSubTrigger>
-                              <Download className="text-muted-foreground" />
-                              <span>{t.common.export}</span>
-                            </DropdownMenuSubTrigger>
-                            <DropdownMenuSubContent>
-                              <DropdownMenuItem
-                                onSelect={() =>
-                                  handleExport(thread, "markdown")
-                                }
-                              >
-                                <FileText className="text-muted-foreground" />
-                                <span>{t.common.exportAsMarkdown}</span>
-                              </DropdownMenuItem>
-                              <DropdownMenuItem
-                                onSelect={() =>
-                                  handleExport(thread, "json")
-                                }
-                              >
-                                <FileJson className="text-muted-foreground" />
-                                <span>{t.common.exportAsJSON}</span>
-                              </DropdownMenuItem>
-                            </DropdownMenuSubContent>
-                          </DropdownMenuSub>
-                          <DropdownMenuSeparator />
-                          <DropdownMenuItem
-                            onSelect={() => handleDelete(thread.thread_id)}
-                          >
-                            <Trash2 className="text-muted-foreground" />
-                            <span>{t.common.delete}</span>
-                          </DropdownMenuItem>
-                        </DropdownMenuContent>
-                      </DropdownMenu>
-                    )}
-                  </SidebarMenuItem>
-                );
-              })}
+                return (
+                  <SidebarMenuItem
+                    key={thread.thread_id}
+                    className="group/side-menu-item"
+                  >
+                    <SidebarMenuButton isActive={isActive} asChild>
+                      <Link
+                        className="text-muted-foreground block w-full whitespace-nowrap group-hover/side-menu-item:overflow-hidden"
+                        href={pathOfThread(thread)}
+                      >
+                        {titleOfThread(thread)}
+                      </Link>
+                    </SidebarMenuButton>
+                    {env.NEXT_PUBLIC_STATIC_WEBSITE_ONLY !== "true" && (
+                      <DropdownMenu>
+                        <DropdownMenuTrigger asChild>
+                          <SidebarMenuAction
+                            showOnHover
+                            className="bg-background/50 hover:bg-background"
+                          >
+                            <MoreHorizontal />
+                            <span className="sr-only">{t.common.more}</span>
+                          </SidebarMenuAction>
+                        </DropdownMenuTrigger>
+                        <DropdownMenuContent
+                          className="w-48 rounded-lg"
+                          side={"right"}
+                          align={"start"}
+                        >
+                          <DropdownMenuItem
+                            onSelect={() =>
+                              handleRenameClick(
+                                thread.thread_id,
+                                titleOfThread(thread),
+                              )
+                            }
+                          >
+                            <Pencil className="text-muted-foreground" />
+                            <span>{t.common.rename}</span>
+                          </DropdownMenuItem>
+                          <DropdownMenuItem
+                            onSelect={() => handleShare(thread)}
+                          >
+                            <Share2 className="text-muted-foreground" />
+                            <span>{t.common.share}</span>
+                          </DropdownMenuItem>
+                          <DropdownMenuSub>
+                            <DropdownMenuSubTrigger>
+                              <Download className="text-muted-foreground" />
+                              <span>{t.common.export}</span>
+                            </DropdownMenuSubTrigger>
+                            <DropdownMenuSubContent>
+                              <DropdownMenuItem
+                                onSelect={() =>
+                                  handleExport(thread, "markdown")
+                                }
+                              >
+                                <FileText className="text-muted-foreground" />
+                                <span>{t.common.exportAsMarkdown}</span>
+                              </DropdownMenuItem>
+                              <DropdownMenuItem
+                                onSelect={() =>
+                                  handleExport(thread, "json")
+                                }
+                              >
+                                <FileJson className="text-muted-foreground" />
+                                <span>{t.common.exportAsJSON}</span>
+                              </DropdownMenuItem>
+                            </DropdownMenuSubContent>
+                          </DropdownMenuSub>
+                          <DropdownMenuSeparator />
+                          <DropdownMenuItem
+                            onSelect={() => handleDelete(thread.thread_id)}
+                          >
+                            <Trash2 className="text-muted-foreground" />
+                            <span>{t.common.delete}</span>
+                          </DropdownMenuItem>
+                        </DropdownMenuContent>
+                      </DropdownMenu>
+                    )}
+                  </SidebarMenuItem>
+                );
+              })}
             </div>
           </SidebarMenu>
         </SidebarGroupContent>
@@ -291,6 +287,15 @@ export function RecentChatList() {
           </DialogFooter>
         </DialogContent>
       </Dialog>
+
+      {/* Share Dialog */}
+      <ShareConversationDialog
+        threadId={shareThreadId}
+        open={shareThreadId !== null}
+        onOpenChange={(o) => {
+          if (!o) setShareThreadId(null);
+        }}
+      />
     </>
   );
 }

frontend-web/src/components/workspace/scheduled-tasks/schedule-builder.tsx

@@ -0,0 +1,220 @@
+"use client";
+
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+
+// ---- 时间配置 ----
+export type ScheduleFreq = "hourly" | "daily" | "weekly" | "monthly";
+
+export interface ScheduleConfig {
+  freq: ScheduleFreq;
+  minute: number;
+  hour: number;
+  weekday: number;
+  date: number;
+}
+
+export const DEFAULT_SCHEDULE_CONFIG: ScheduleConfig = {
+  freq: "daily",
+  minute: 0,
+  hour: 9,
+  weekday: 1,
+  date: 1,
+};
+
+const WEEKDAYS = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"];
+const HOURS = Array.from({ length: 24 }, (_, i) => i);
+const MINUTES = [0, 15, 30, 45];
+const DATES = Array.from({ length: 31 }, (_, i) => i + 1);
+
+export function buildCron(cfg: ScheduleConfig): string {
+  // Keep the minute slot when the user picked one for daily/weekly/monthly too,
+  // so "每天 9:30" doesn't silently truncate to 9:00 on save → reload round trips.
+  const m = Number.isFinite(cfg.minute) ? cfg.minute : 0;
+  switch (cfg.freq) {
+    case "hourly":
+      return `${m} * * * *`;
+    case "daily":
+      return `${m} ${cfg.hour} * * *`;
+    case "weekly":
+      return `${m} ${cfg.hour} * * ${cfg.weekday}`;
+    case "monthly":
+      return `${m} ${cfg.hour} ${cfg.date} * *`;
+  }
+}
+
+// Parse a 5-field cron expression into the form picker state.
+//
+// Bug we keep getting bitten by: the edit dialog used to call
+// `parseCron(task.schedule_text)` and `schedule_text` may be the raw user
+// input (free-text like "每天 9 点") rather than a real cron string. The
+// fallback `DEFAULT_SCHEDULE_CONFIG` then made the picker silently
+// reinterpret the task. Callers should prefer `task.cron_expr` (the canonical
+// schedule produced by `_schedule_to_cron`); this function stays the single
+// source of truth for cron → picker, and also handles the looser step-syntax
+// variants (e.g. "0 */3 * * *") we sometimes generate.
+export function parseCron(cron: string | null | undefined): ScheduleConfig | null {
+  if (!cron) return null;
+  const parts = cron.trim().split(/\s+/);
+  if (parts.length !== 5) return null;
+  const [min, hr, date, , wd] = parts;
+  const minute = parseInt(min ?? "", 10);
+  const hour = parseInt(hr ?? "", 10);
+
+  // Hourly: ``M * * * *`` — match before the daily branch so a minute-only
+  // cron isn't misread as daily.
+  if (hr === "*" && date === "*" && wd === "*") {
+    if (!isNaN(minute)) {
+      return { ...DEFAULT_SCHEDULE_CONFIG, freq: "hourly", minute };
+    }
+  }
+  // ``0 */N * * *`` (every N hours): map to hourly with that minute; the
+  // picker doesn't model "every N hours" yet, so this is the safest fallback
+  // that at least doesn't silently round to 9:00.
+  if ((hr ?? "").startsWith("*/") && date === "*" && wd === "*") {
+    if (!isNaN(minute)) {
+      return { ...DEFAULT_SCHEDULE_CONFIG, freq: "hourly", minute };
+    }
+  }
+  if (date === "*" && wd === "*") {
+    if (!isNaN(hour)) {
+      return {
+        ...DEFAULT_SCHEDULE_CONFIG,
+        freq: "daily",
+        hour,
+        minute: isNaN(minute) ? 0 : minute,
+      };
+    }
+  }
+  if (date === "*" && wd !== "*") {
+    const weekday = parseInt(wd ?? "", 10);
+    if (!isNaN(hour) && !isNaN(weekday)) {
+      return {
+        ...DEFAULT_SCHEDULE_CONFIG,
+        freq: "weekly",
+        hour,
+        weekday,
+        minute: isNaN(minute) ? 0 : minute,
+      };
+    }
+  }
+  if (wd === "*" && date !== "*") {
+    const d = parseInt(date ?? "", 10);
+    if (!isNaN(hour) && !isNaN(d)) {
+      return {
+        ...DEFAULT_SCHEDULE_CONFIG,
+        freq: "monthly",
+        hour,
+        date: d,
+        minute: isNaN(minute) ? 0 : minute,
+      };
+    }
+  }
+  return null;
+}
+
+export function ScheduleBuilder({
+  value,
+  onChange,
+}: {
+  value: ScheduleConfig;
+  onChange: (cfg: ScheduleConfig) => void;
+}) {
+  const set = (patch: Partial<ScheduleConfig>) => onChange({ ...value, ...patch });
+  return (
+    <div className="flex flex-wrap gap-2">
+      <Select value={value.freq} onValueChange={(v) => set({ freq: v as ScheduleFreq })}>
+        <SelectTrigger className="w-28">
+          <SelectValue />
+        </SelectTrigger>
+        <SelectContent>
+          <SelectItem value="hourly">每小时</SelectItem>
+          <SelectItem value="daily">每天</SelectItem>
+          <SelectItem value="weekly">每周</SelectItem>
+          <SelectItem value="monthly">每月</SelectItem>
+        </SelectContent>
+      </Select>
+
+      {value.freq === "hourly" && (
+        <Select value={String(value.minute)} onValueChange={(v) => set({ minute: parseInt(v) })}>
+          <SelectTrigger className="w-24">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {MINUTES.map((m) => (
+              <SelectItem key={m} value={String(m)}>{m} 分</SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      )}
+
+      {value.freq === "weekly" && (
+        <Select value={String(value.weekday)} onValueChange={(v) => set({ weekday: parseInt(v) })}>
+          <SelectTrigger className="w-24">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {WEEKDAYS.map((d, i) => (
+              <SelectItem key={i} value={String(i)}>{d}</SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      )}
+
+      {value.freq === "monthly" && (
+        <Select value={String(value.date)} onValueChange={(v) => set({ date: parseInt(v) })}>
+          <SelectTrigger className="w-24">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {DATES.map((d) => (
+              <SelectItem key={d} value={String(d)}>第 {d} 日</SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      )}
+
+      {value.freq !== "hourly" && (
+        <Select value={String(value.hour)} onValueChange={(v) => set({ hour: parseInt(v) })}>
+          <SelectTrigger className="w-24">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {HOURS.map((h) => (
+              <SelectItem key={h} value={String(h)}>{h} 时</SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      )}
+    </div>
+  );
+}
+
+export function statusLabel(status?: string | null) {
+  switch (status) {
+    case "succeeded":
+      return "成功";
+    case "failed":
+      return "失败";
+    case "running":
+      return "执行中";
+    case "pending":
+      return "等待中";
+    default:
+      return status || "未知";
+  }
+}
+
+export function statusVariant(
+  status?: string | null,
+): "default" | "secondary" | "destructive" | "outline" {
+  if (status === "succeeded") return "default";
+  if (status === "failed") return "destructive";
+  if (status === "running") return "secondary";
+  return "outline";
+}

frontend-web/src/components/workspace/skills/skill-detail-dialog.tsx

@@ -1,10 +1,24 @@
 "use client";
 
-import { Loader2, PencilIcon } from "lucide-react";
+import {
+  ChevronDownIcon,
+  FileCode2Icon,
+  FileTextIcon,
+  GlobeIcon,
+  Loader2,
+  PencilIcon,
+  SparklesIcon,
+} from "lucide-react";
 import { useEffect, useMemo, useState } from "react";
 import { toast } from "sonner";
 
+import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
+import {
+  Collapsible,
+  CollapsibleContent,
+  CollapsibleTrigger,
+} from "@/components/ui/collapsible";
 import {
   Dialog,
   DialogContent,
@@ -23,15 +37,18 @@ import {
 } from "@/core/skills/hooks";
 import type { Skill } from "@/core/skills/type";
 import { reasoningPlugins } from "@/core/streamdown";
+import { cn } from "@/lib/utils";
 
 /**
- * Whether the current user may edit a skill's detail text.
+ * Whether the current user may edit a skill's detail text and view its raw
+ * SKILL.md source.
  *
- * Admins can edit any skill; the publisher (owner of a custom skill) can edit
+ * Admins qualify for any skill; the publisher (owner of a custom skill) for
  * their own. Built-in skills have no human owner, so only admins qualify.
- * Mirrors the backend authz in `PUT /api/skills/{name}/detail`.
+ * Mirrors the backend authz in `PUT /api/skills/{name}/detail` and
+ * `GET /api/skills/{name}/content`.
  */
-function canEditSkillDetail(skill: Skill | null | undefined): boolean {
+function canManageSkill(skill: Skill | null | undefined): boolean {
   if (!skill) return false;
   const auth = getStoredAuth();
   if (!auth) return false;
@@ -45,8 +62,9 @@ function canEditSkillDetail(skill: Skill | null | undefined): boolean {
 
 /**
  * Reusable skill detail dialog. Given a skill name it fetches the skill
- * metadata (including the admin/owner-authored `detail`) and the raw SKILL.md
- * source, and lets authorized users edit the detail inline.
+ * metadata (including the admin/owner-authored `detail`) and lets authorized
+ * users edit the detail inline. The raw SKILL.md source is shown only to the
+ * publisher or an admin — everyone else sees just the description and detail.
  */
 export function SkillDetailDialog({
   skillName,
@@ -62,17 +80,22 @@ export function SkillDetailDialog({
   // Only fetch while the dialog is open to avoid background requests.
   const activeName = open ? skillName : null;
   const { data: skill, isLoading: isSkillLoading } = useSkill(activeName);
-  const {
-    data: contentData,
-    isLoading: isContentLoading,
-    error: contentError,
-  } = useSkillContent(activeName);
   const setDetail = useSetSkillDetail();
 
   const [editing, setEditing] = useState(false);
   const [draft, setDraft] = useState("");
   const [showSource, setShowSource] = useState(false);
 
+  const canManage = useMemo(() => canManageSkill(skill), [skill]);
+
+  // The SKILL.md source endpoint is publisher/admin-only — only request it
+  // when the viewer is actually allowed to see it.
+  const {
+    data: contentData,
+    isLoading: isContentLoading,
+    error: contentError,
+  } = useSkillContent(open && canManage ? skillName : null);
+
   // Reset transient UI whenever the dialog closes or switches to another skill.
   useEffect(() => {
     if (!open) {
@@ -81,8 +104,6 @@ export function SkillDetailDialog({
     }
   }, [open, skillName]);
 
-  const canEdit = useMemo(() => canEditSkillDetail(skill), [skill]);
-
   function startEditing() {
     setDraft(skill?.detail ?? "");
     setEditing(true);
@@ -101,22 +122,54 @@ export function SkillDetailDialog({
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="flex max-h-[80vh] flex-col gap-3 sm:max-w-2xl">
-        <DialogHeader>
-          <DialogTitle>{skill?.name ?? skillName ?? ""}</DialogTitle>
-          <DialogDescription>{skill?.description}</DialogDescription>
+      <DialogContent className="flex max-h-[85vh] flex-col gap-0 overflow-hidden p-0 sm:max-w-2xl">
+        {/* Header */}
+        <DialogHeader className="space-y-0 border-b px-6 py-4 text-left">
+          <div className="flex items-start gap-3">
+            <div className="bg-primary/10 text-primary flex size-9 shrink-0 items-center justify-center rounded-lg">
+              <SparklesIcon className="size-5" />
+            </div>
+            <div className="min-w-0 flex-1">
+              <div className="flex flex-wrap items-center gap-2">
+                <DialogTitle className="truncate text-base">
+                  {skill?.name ?? skillName ?? ""}
+                </DialogTitle>
+                {skill?.builtin && (
+                  <Badge variant="secondary" className="text-xs">
+                    {tx.badgeBuiltin}
+                  </Badge>
+                )}
+                {skill?.published && (
+                  <Badge
+                    variant="outline"
+                    className="border-sky-500/30 text-sky-700 dark:text-sky-300 text-xs"
+                  >
+                    <GlobeIcon className="size-3" />
+                    {tx.badgePublished}
+                  </Badge>
+                )}
+              </div>
+              <DialogDescription className="mt-1 text-sm leading-relaxed">
+                {skill?.description || "—"}
+              </DialogDescription>
+            </div>
+          </div>
         </DialogHeader>
 
-        <div className="min-h-0 flex-1 space-y-4 overflow-auto pr-1">
+        {/* Body */}
+        <div className="min-h-0 flex-1 space-y-5 overflow-auto px-6 py-5">
           {/* Detail — human-authored long-form introduction */}
           <section className="space-y-2">
             <div className="flex items-center justify-between">
-              <h3 className="text-sm font-medium">{tx.detailSectionTitle}</h3>
-              {canEdit && !editing && (
+              <h3 className="text-foreground/90 flex items-center gap-1.5 text-sm font-semibold">
+                <FileTextIcon className="text-muted-foreground size-4" />
+                {tx.detailSectionTitle}
+              </h3>
+              {canManage && !editing && (
                 <Button
                   size="sm"
                   variant="ghost"
-                  className="h-7"
+                  className="text-muted-foreground hover:text-foreground h-7 px-2"
                   onClick={startEditing}
                 >
                   <PencilIcon className="size-3.5" />
@@ -124,15 +177,17 @@ export function SkillDetailDialog({
                 </Button>
               )}
             </div>
+
             {editing ? (
               <div className="space-y-2">
                 <Textarea
                   value={draft}
                   onChange={(e) => setDraft(e.currentTarget.value)}
                   placeholder={tx.detailPlaceholder}
-                  className="max-h-[320px] min-h-40 resize-y overflow-y-auto text-sm"
+                  className="max-h-[320px] min-h-44 resize-y overflow-y-auto text-sm leading-relaxed"
+                  autoFocus
                 />
-                <div className="flex justify-end gap-2">
+                <div className="flex items-center justify-end gap-2">
                   <Button
                     size="sm"
                     variant="outline"
@@ -154,12 +209,12 @@ export function SkillDetailDialog({
                 </div>
               </div>
             ) : isSkillLoading ? (
-              <div className="text-muted-foreground flex items-center gap-2 text-sm">
+              <div className="text-muted-foreground flex items-center gap-2 rounded-lg border border-dashed px-4 py-8 text-sm">
                 <Loader2 className="size-4 animate-spin" />
                 {t.common.loading}
               </div>
             ) : skill?.detail ? (
-              <div className="bg-muted/40 rounded-md border p-3 text-sm">
+              <div className="bg-muted/30 rounded-lg border p-4 text-sm leading-relaxed">
                 <MarkdownContent
                   content={skill.detail}
                   isLoading={false}
@@ -168,44 +223,55 @@ export function SkillDetailDialog({
                 />
               </div>
             ) : (
-              <p className="text-muted-foreground text-sm">
-                {tx.detailEmpty}
-                {!canEdit ? ` ${tx.detailAdminOnlyHint}` : ""}
-              </p>
-            )}
-          </section>
-
-          {/* SKILL.md source — collapsed by default */}
-          <section className="space-y-2">
-            <button
-              type="button"
-              className="text-muted-foreground hover:text-foreground text-sm font-medium"
-              onClick={() => setShowSource((v) => !v)}
-            >
-              {showSource ? "▾ " : "▸ "}
-              {tx.contentSectionTitle}
-            </button>
-            {showSource && (
-              <div className="bg-muted/40 overflow-auto rounded-md border">
-                {isContentLoading ? (
-                  <div className="text-muted-foreground flex items-center justify-center gap-2 py-10 text-sm">
-                    <Loader2 className="size-4 animate-spin" />
-                    {t.common.loading}
-                  </div>
-                ) : contentError ? (
-                  <div className="text-destructive p-4 text-sm">
-                    {contentError instanceof Error
-                      ? contentError.message
-                      : String(contentError)}
-                  </div>
-                ) : (
-                  <pre className="text-foreground/90 max-h-[320px] overflow-auto whitespace-pre-wrap wrap-break-word p-4 font-mono text-xs leading-relaxed">
-                    {contentData?.content}
-                  </pre>
+              <div className="text-muted-foreground rounded-lg border border-dashed px-4 py-8 text-center">
+                <FileTextIcon className="mx-auto mb-2 size-6 opacity-40" />
+                <p className="text-sm">{tx.detailEmpty}</p>
+                {!canManage && (
+                  <p className="mt-1 text-xs">{tx.detailAdminOnlyHint}</p>
                 )}
               </div>
             )}
           </section>
+
+          {/* SKILL.md source — publisher / admin only, collapsed by default */}
+          {canManage && (
+            <section>
+              <Collapsible open={showSource} onOpenChange={setShowSource}>
+                <CollapsibleTrigger className="bg-muted/30 hover:bg-muted/60 flex w-full items-center justify-between rounded-lg border px-4 py-2.5 text-sm font-semibold transition-colors">
+                  <span className="flex items-center gap-1.5">
+                    <FileCode2Icon className="text-muted-foreground size-4" />
+                    {tx.contentSectionTitle}
+                  </span>
+                  <ChevronDownIcon
+                    className={cn(
+                      "text-muted-foreground size-4 transition-transform",
+                      showSource && "rotate-180",
+                    )}
+                  />
+                </CollapsibleTrigger>
+                <CollapsibleContent className="pt-2">
+                  <div className="bg-muted/50 max-h-[340px] overflow-auto rounded-lg border">
+                    {isContentLoading ? (
+                      <div className="text-muted-foreground flex items-center justify-center gap-2 py-12 text-sm">
+                        <Loader2 className="size-4 animate-spin" />
+                        {t.common.loading}
+                      </div>
+                    ) : contentError ? (
+                      <div className="text-destructive p-4 text-sm">
+                        {contentError instanceof Error
+                          ? contentError.message
+                          : String(contentError)}
+                      </div>
+                    ) : (
+                      <pre className="text-foreground/80 p-4 font-mono text-xs leading-relaxed break-words whitespace-pre-wrap">
+                        {contentData?.content}
+                      </pre>
+                    )}
+                  </div>
+                </CollapsibleContent>
+              </Collapsible>
+            </section>
+          )}
         </div>
       </DialogContent>
     </Dialog>

frontend-web/src/components/workspace/thread-share-dialogs.tsx

@@ -0,0 +1,328 @@
+"use client";
+
+import {
+  CheckIcon,
+  CopyIcon,
+  DownloadIcon,
+  ExternalLinkIcon,
+  Loader2,
+  Trash2Icon,
+} from "lucide-react";
+import { useEffect, useState } from "react";
+import { toast } from "sonner";
+
+import { Button } from "@/components/ui/button";
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { useI18n } from "@/core/i18n/hooks";
+import type {
+  SharePreview,
+  ThreadShare,
+  ThreadShareMode,
+} from "@/core/thread-shares/api";
+import { buildPublicShareUrl, extractShareCode } from "@/core/thread-shares/api";
+import {
+  useCreateShare,
+  useImportShare,
+  usePreviewShare,
+  useRevokeShare,
+} from "@/core/thread-shares/hooks";
+import { cn } from "@/lib/utils";
+
+function errorMessage(err: unknown): string {
+  return err instanceof Error ? err.message : String(err);
+}
+
+/**
+ * Dialog that produces a share link for a single conversation. Two modes:
+ *
+ * - `import` — mints a short code; a recipient enters it in the import dialog
+ *   to copy the conversation into their own account.
+ * - `view` — mints a public, read-only link that anyone can open without
+ *   logging in (a static page; viewers cannot send new messages).
+ */
+export function ShareConversationDialog({
+  threadId,
+  open,
+  onOpenChange,
+}: {
+  threadId: string | null;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}) {
+  const { t } = useI18n();
+  const tx = t.threadShare;
+  const createShare = useCreateShare();
+  const revokeShare = useRevokeShare();
+  const [mode, setMode] = useState<ThreadShareMode>("view");
+  const [share, setShare] = useState<ThreadShare | null>(null);
+  const [copied, setCopied] = useState(false);
+
+  // Reset to the default mode (read-only link) every time the dialog opens.
+  useEffect(() => {
+    if (open) setMode("view");
+  }, [open, threadId]);
+
+  // Mint / reuse the link whenever the dialog opens or the mode changes.
+  useEffect(() => {
+    if (!open || !threadId) return;
+    setShare(null);
+    setCopied(false);
+    createShare
+      .mutateAsync({ threadId, mode })
+      .then(setShare)
+      .catch((err) => toast.error(errorMessage(err)));
+    // createShare is stable enough; re-running only on open/threadId/mode is intended.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [open, threadId, mode]);
+
+  const isView = mode === "view";
+  const publicUrl =
+    isView && share ? buildPublicShareUrl(share.share_code) : "";
+
+  async function handleCopy() {
+    if (!share) return;
+    const text = isView ? publicUrl : share.share_code;
+    try {
+      await navigator.clipboard.writeText(text);
+      setCopied(true);
+      toast.success(isView ? "链接已复制" : tx.codeCopied);
+      setTimeout(() => setCopied(false), 1500);
+    } catch {
+      toast.error(t.clipboard.failedToCopyToClipboard);
+    }
+  }
+
+  async function handleRevoke() {
+    if (!share || !window.confirm(tx.revokeConfirm)) return;
+    try {
+      await revokeShare.mutateAsync(share.share_code);
+      toast.success(tx.revokeSuccess);
+      onOpenChange(false);
+    } catch (err) {
+      toast.error(errorMessage(err));
+    }
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-md">
+        <DialogHeader>
+          <DialogTitle>{tx.shareTitle}</DialogTitle>
+          <DialogDescription>
+            {isView
+              ? "生成一个只读链接，任何人无需登录都能查看这个对话，但不能继续提问。"
+              : tx.shareDescription}
+          </DialogDescription>
+        </DialogHeader>
+
+        {/* Mode selector */}
+        <div className="bg-muted flex gap-1 rounded-lg p-1">
+          {(
+            [
+              { value: "view" as const, label: "只读链接" },
+              { value: "import" as const, label: "导入副本" },
+            ]
+          ).map((option) => (
+            <button
+              key={option.value}
+              type="button"
+              onClick={() => setMode(option.value)}
+              className={cn(
+                "flex-1 rounded-md px-3 py-1.5 text-sm transition-colors",
+                mode === option.value
+                  ? "bg-background text-foreground shadow-sm"
+                  : "text-muted-foreground hover:text-foreground",
+              )}
+            >
+              {option.label}
+            </button>
+          ))}
+        </div>
+
+        {!share ? (
+          <div className="text-muted-foreground flex items-center gap-2 py-8 text-sm">
+            <Loader2 className="size-4 animate-spin" />
+            {tx.generating}
+          </div>
+        ) : (
+          <div className="space-y-3">
+            <div>
+              <p className="text-muted-foreground mb-1 text-xs">
+                {isView ? "只读链接" : tx.shareCodeLabel}
+              </p>
+              <div className="flex items-center gap-2">
+                {isView ? (
+                  <Input
+                    readOnly
+                    value={publicUrl}
+                    onFocus={(e) => e.currentTarget.select()}
+                    className="flex-1 font-mono text-xs"
+                  />
+                ) : (
+                  <code className="bg-muted flex-1 rounded-md px-3 py-2 text-center font-mono text-lg tracking-[0.3em]">
+                    {share.share_code}
+                  </code>
+                )}
+                <Button variant="outline" onClick={() => void handleCopy()}>
+                  {copied ? (
+                    <CheckIcon className="size-4" />
+                  ) : (
+                    <CopyIcon className="size-4" />
+                  )}
+                  {isView ? "复制链接" : tx.copyCode}
+                </Button>
+              </div>
+            </div>
+            {isView ? (
+              <div className="space-y-3">
+                <p className="text-muted-foreground text-xs">
+                  拿到链接的人都能查看这个对话的全部内容（只读），无法继续发送问题。撤销后链接立即失效。
+                </p>
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={() => window.open(publicUrl, "_blank", "noopener")}
+                >
+                  <ExternalLinkIcon className="size-3.5" />
+                  在新标签页打开
+                </Button>
+              </div>
+            ) : (
+              <p className="text-muted-foreground text-xs">{tx.shareHint}</p>
+            )}
+            <Button
+              variant="ghost"
+              size="sm"
+              className="text-destructive hover:text-destructive"
+              disabled={revokeShare.isPending}
+              onClick={() => void handleRevoke()}
+            >
+              <Trash2Icon className="size-3.5" />
+              {tx.revoke}
+            </Button>
+          </div>
+        )}
+      </DialogContent>
+    </Dialog>
+  );
+}
+
+/** Dialog where a user pastes a share code to import someone's conversation. */
+export function ImportConversationsDialog({
+  open,
+  onOpenChange,
+}: {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}) {
+  const { t } = useI18n();
+  const tx = t.threadShare;
+  const [input, setInput] = useState("");
+  const [preview, setPreview] = useState<SharePreview | null>(null);
+  const previewShare = usePreviewShare();
+  const importShare = useImportShare();
+
+  // Reset state whenever the dialog closes.
+  useEffect(() => {
+    if (!open) {
+      setInput("");
+      setPreview(null);
+    }
+  }, [open]);
+
+  async function handlePreview() {
+    const code = extractShareCode(input);
+    if (!code) {
+      toast.error(tx.emptyCode);
+      return;
+    }
+    try {
+      setPreview(await previewShare.mutateAsync(code));
+    } catch (err) {
+      setPreview(null);
+      toast.error(errorMessage(err));
+    }
+  }
+
+  async function handleImport() {
+    const code = preview?.share_code ?? extractShareCode(input);
+    if (!code) {
+      toast.error(tx.emptyCode);
+      return;
+    }
+    try {
+      const result = await importShare.mutateAsync(code);
+      if (result.imported > 0) {
+        toast.success(tx.importSuccess);
+      } else {
+        toast.info(tx.alreadyImported);
+      }
+      onOpenChange(false);
+    } catch (err) {
+      toast.error(errorMessage(err));
+    }
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-md">
+        <DialogHeader>
+          <DialogTitle>{tx.importTitle}</DialogTitle>
+          <DialogDescription>{tx.importDescription}</DialogDescription>
+        </DialogHeader>
+
+        <div className="flex gap-2">
+          <Input
+            value={input}
+            onChange={(e) => {
+              setInput(e.target.value);
+              setPreview(null);
+            }}
+            placeholder={tx.codeInputPlaceholder}
+            className="font-mono"
+          />
+          <Button
+            variant="outline"
+            onClick={() => void handlePreview()}
+            disabled={previewShare.isPending || !input.trim()}
+          >
+            {previewShare.isPending && (
+              <Loader2 className="size-4 animate-spin" />
+            )}
+            {tx.preview}
+          </Button>
+        </div>
+
+        {preview && (
+          <div className="space-y-2 rounded-lg border p-3 text-sm">
+            <p className="font-medium">
+              {tx.previewConversation.replace("{title}", preview.title)}
+            </p>
+            <p className="text-muted-foreground text-xs">
+              {tx.previewFrom.replace("{user}", preview.shared_by)}
+            </p>
+            <Button
+              className="w-full"
+              onClick={() => void handleImport()}
+              disabled={importShare.isPending}
+            >
+              {importShare.isPending ? (
+                <Loader2 className="size-4 animate-spin" />
+              ) : (
+                <DownloadIcon className="size-4" />
+              )}
+              {importShare.isPending ? tx.importing : tx.doImport}
+            </Button>
+          </div>
+        )}
+      </DialogContent>
+    </Dialog>
+  );
+}

frontend-web/src/components/workspace/workspace-nav-chat-list.tsx

@@ -13,7 +13,7 @@ import {
 } from "@/components/ui/sidebar";
 import { getStoredAuth } from "@/core/auth";
 import { useI18n } from "@/core/i18n/hooks";
-import { BotIcon, ListChecks, MessageSquarePlus, MessagesSquare, SparklesIcon, UsersIcon } from "lucide-react";
+import { BotIcon, CalendarClock, ListChecks, MessageSquarePlus, MessagesSquare, SparklesIcon, UsersIcon } from "lucide-react";
 
 export function WorkspaceNavChatList() {
   const { t } = useI18n();
@@ -77,7 +77,7 @@ export function WorkspaceNavChatList() {
         {isAdmin && (
           <SidebarMenuItem>
             <SidebarMenuButton
-              isActive={pathname.startsWith("/page/workspace/admin")}
+              isActive={pathname === "/page/workspace/admin/users"}
               asChild
             >
               <Link className="text-sidebar-foreground" href="/page/workspace/admin/users">
@@ -87,6 +87,22 @@ export function WorkspaceNavChatList() {
             </SidebarMenuButton>
           </SidebarMenuItem>
         )}
+        {isAdmin && (
+          <SidebarMenuItem>
+            <SidebarMenuButton
+              isActive={pathname === "/page/workspace/admin/scheduled-tasks"}
+              asChild
+            >
+              <Link
+                className="text-sidebar-foreground"
+                href="/page/workspace/admin/scheduled-tasks"
+              >
+                <CalendarClock />
+                <span>定时任务管理</span>
+              </Link>
+            </SidebarMenuButton>
+          </SidebarMenuItem>
+        )}
       </SidebarMenu>
     </SidebarGroup>
   );

frontend-web/src/core/i18n/locales/en-US.ts

@@ -250,6 +250,35 @@ export const enUS: Translations = {
     searchChats: "Search chats",
   },
 
+  // Conversation sharing
+  threadShare: {
+    importChats: "Import chat",
+    shareTitle: "Share conversation",
+    shareDescription:
+      'Share this conversation with others. They enter the code under "Import chat" to copy it into their own account and keep chatting.',
+    generating: "Generating code...",
+    shareCodeLabel: "Share code",
+    copyCode: "Copy",
+    codeCopied: "Share code copied",
+    shareHint:
+      "Anyone who has the code can copy this conversation — share it carefully.",
+    revoke: "Revoke share",
+    revokeConfirm: "Revoking makes the code unusable immediately. Continue?",
+    revokeSuccess: "Share revoked",
+    importTitle: "Import a conversation",
+    importDescription:
+      "Enter a share code to copy the shared conversation into your account.",
+    codeInputPlaceholder: "Paste a share code",
+    preview: "Preview",
+    previewConversation: "Conversation: {title}",
+    previewFrom: "From user {user}",
+    doImport: "Import",
+    importing: "Importing...",
+    importSuccess: "Conversation imported",
+    alreadyImported: "You have already imported this conversation",
+    emptyCode: "Enter a share code first",
+  },
+
   // Page titles (document title)
   pages: {
     appName: "CM Assistant",

frontend-web/src/core/i18n/locales/types.ts

@@ -194,6 +194,32 @@ export interface Translations {
     searchChats: string;
   };
 
+  // Conversation sharing
+  threadShare: {
+    importChats: string;
+    shareTitle: string;
+    shareDescription: string;
+    generating: string;
+    shareCodeLabel: string;
+    copyCode: string;
+    codeCopied: string;
+    shareHint: string;
+    revoke: string;
+    revokeConfirm: string;
+    revokeSuccess: string;
+    importTitle: string;
+    importDescription: string;
+    codeInputPlaceholder: string;
+    preview: string;
+    previewConversation: string;
+    previewFrom: string;
+    doImport: string;
+    importing: string;
+    importSuccess: string;
+    alreadyImported: string;
+    emptyCode: string;
+  };
+
   // Page titles (document title)
   pages: {
     appName: string;

frontend-web/src/core/i18n/locales/zh-CN.ts

@@ -238,6 +238,33 @@ export const zhCN: Translations = {
     searchChats: "搜索对话",
   },
 
+  // Conversation sharing
+  threadShare: {
+    importChats: "导入对话",
+    shareTitle: "分享对话",
+    shareDescription:
+      "把这个对话分享给他人。对方在「导入对话」里填入分享码,即可把它复制一份到自己账号并继续聊天。",
+    generating: "生成分享码中...",
+    shareCodeLabel: "分享码",
+    copyCode: "复制",
+    codeCopied: "分享码已复制",
+    shareHint: "知道分享码的人都能复制这个对话,请谨慎分享。",
+    revoke: "撤销分享",
+    revokeConfirm: "撤销后该分享码立即失效,确定撤销?",
+    revokeSuccess: "已撤销分享",
+    importTitle: "导入对话",
+    importDescription: "填入对方给你的分享码,把 TA 分享的那个对话复制到你的账号。",
+    codeInputPlaceholder: "粘贴分享码",
+    preview: "预览",
+    previewConversation: "对话:{title}",
+    previewFrom: "来自用户 {user}",
+    doImport: "导入",
+    importing: "导入中...",
+    importSuccess: "对话已导入",
+    alreadyImported: "你已经导入过这个对话了",
+    emptyCode: "请先填入分享码",
+  },
+
   // Page titles (document title)
   pages: {
     appName: "CM 助手",

frontend-web/src/core/scheduled-tasks/api.ts

@@ -296,3 +296,61 @@ export async function unsubscribeScheduledTask(taskId: string) {
     }),
   );
 }
+
+// --- Admin (cross-user management) ---
+
+/** List every scheduled task across all users. Admin-only endpoint. */
+export async function listAllScheduledTasks(search?: string) {
+  const qs = new URLSearchParams();
+  if (search) qs.set("search", search);
+  const query = qs.toString();
+  return parseResponse<ScheduledTask[]>(
+    await apiFetch(`${baseUrl()}/admin/all${query ? `?${query}` : ""}`),
+  );
+}
+
+/** List runs for any task regardless of owner. Admin-only endpoint. */
+export async function adminListScheduledTaskRuns(taskId: string) {
+  return parseResponse<ScheduledTaskRun[]>(
+    await apiFetch(`${baseUrl()}/admin/${encodeURIComponent(taskId)}/runs`),
+  );
+}
+
+/** Update any task regardless of owner. Admin-only endpoint. */
+export async function adminUpdateScheduledTask(
+  taskId: string,
+  data: Partial<{
+    name: string;
+    prompt: string;
+    schedule: string;
+    timezone: string;
+    enabled: boolean;
+    execution_agent_name: string | null;
+  }>,
+) {
+  return parseResponse<ScheduledTask>(
+    await apiFetch(`${baseUrl()}/admin/${encodeURIComponent(taskId)}`, {
+      method: "PATCH",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(data),
+    }),
+  );
+}
+
+/** Delete any task regardless of owner. Admin-only endpoint. */
+export async function adminDeleteScheduledTask(taskId: string) {
+  return parseResponse<{ success: boolean }>(
+    await apiFetch(`${baseUrl()}/admin/${encodeURIComponent(taskId)}`, {
+      method: "DELETE",
+    }),
+  );
+}
+
+/** Trigger an immediate run of any task regardless of owner. Admin-only. */
+export async function adminTriggerScheduledTask(taskId: string) {
+  return parseResponse<{ success: boolean; task: ScheduledTask }>(
+    await apiFetch(`${baseUrl()}/admin/${encodeURIComponent(taskId)}/trigger`, {
+      method: "POST",
+    }),
+  );
+}

frontend-web/src/core/scheduled-tasks/hooks.ts

@@ -6,12 +6,17 @@ import {
 } from "@tanstack/react-query";
 
 import {
+  adminDeleteScheduledTask,
+  adminListScheduledTaskRuns,
+  adminTriggerScheduledTask,
+  adminUpdateScheduledTask,
   createScheduledTask,
   deleteScheduledTask,
   deleteScheduledTaskRun,
   getSchedulerThread,
   getScheduledTaskDeliveryProfile,
   getScheduledTaskRun,
+  listAllScheduledTasks,
   listPublishedScheduledTasks,
   listScheduledTaskRuns,
   listScheduledTasks,
@@ -74,6 +79,58 @@ export function useScheduledTaskDeliveryProfile() {
   });
 }
 
+/** Admin: every scheduled task across all users. */
+export function useAllScheduledTasks(
+  params: { search?: string; enabled?: boolean } = {},
+) {
+  const search = params.search ?? "";
+  return useQuery({
+    queryKey: ["scheduled-tasks", "admin", "list", search],
+    queryFn: () => listAllScheduledTasks(search),
+    enabled: params.enabled ?? true,
+    refetchOnWindowFocus: false,
+    placeholderData: keepPreviousData,
+  });
+}
+
+/** Admin: runs for any task regardless of owner. */
+export function useAdminScheduledTaskRuns(taskId?: string | null) {
+  return useQuery({
+    queryKey: ["scheduled-tasks", "admin", taskId, "runs"],
+    queryFn: () => adminListScheduledTaskRuns(taskId!),
+    enabled: !!taskId,
+    refetchOnWindowFocus: false,
+  });
+}
+
+/** Admin mutations: edit / delete / trigger any task. */
+export function useAdminScheduledTaskActions() {
+  const queryClient = useQueryClient();
+  const invalidate = () =>
+    queryClient.invalidateQueries({ queryKey: ["scheduled-tasks"] });
+
+  return {
+    update: useMutation({
+      mutationFn: ({
+        taskId,
+        data,
+      }: {
+        taskId: string;
+        data: Parameters<typeof adminUpdateScheduledTask>[1];
+      }) => adminUpdateScheduledTask(taskId, data),
+      onSuccess: invalidate,
+    }),
+    remove: useMutation({
+      mutationFn: adminDeleteScheduledTask,
+      onSuccess: invalidate,
+    }),
+    trigger: useMutation({
+      mutationFn: adminTriggerScheduledTask,
+      onSuccess: invalidate,
+    }),
+  };
+}
+
 export function usePublishedScheduledTasks(enabled: boolean = true) {
   return useQuery({
     queryKey: ["scheduled-tasks", "published"],

frontend-web/src/core/scheduled-tasks/types.ts

@@ -94,6 +94,7 @@ export type ScheduledTaskRun = {
   status: "pending" | "running" | "succeeded" | "failed" | string;
   error?: string | null;
   result?: ScheduledTaskRunResult | null;
+  retry_count?: number | null;
   created_at?: string | null;
   updated_at?: string | null;
   can_edit?: boolean;

frontend-web/src/core/thread-shares/api.ts

@@ -0,0 +1,137 @@
+import type { Message } from "@langchain/langgraph-sdk";
+
+import { apiFetch } from "@/core/api";
+import { getBackendBaseURL } from "@/core/config";
+
+/**
+ * Share modes:
+ * - `import` — recipient (a logged-in user) copies the conversation into
+ *   their own account and can keep chatting in the copy.
+ * - `view` — a public, read-only static page anyone can open without
+ *   logging in; viewers cannot send new messages.
+ */
+export type ThreadShareMode = "import" | "view";
+
+export interface ThreadShare {
+  share_code: string;
+  owner_user_id: string;
+  thread_id: string;
+  revoked: boolean;
+  mode: ThreadShareMode;
+  created_at: string | null;
+}
+
+/** Read-only conversation snapshot returned by the public view-share endpoint. */
+export interface PublicShareSnapshot {
+  share_code: string;
+  title: string;
+  mode: string;
+  messages: Message[];
+  artifacts: string[];
+  created_at: string | null;
+}
+
+export interface SharePreview {
+  share_code: string;
+  shared_by: string;
+  title: string;
+}
+
+export interface ImportResult {
+  imported: number;
+  skipped: number;
+}
+
+const baseUrl = () => `${getBackendBaseURL()}/api/thread-shares`;
+
+async function parseError(response: Response, fallback: string): Promise<Error> {
+  const data = (await response.json().catch(() => ({}))) as { detail?: unknown };
+  const detail = data.detail;
+  const message =
+    typeof detail === "string" && detail
+      ? detail
+      : `${fallback} (HTTP ${response.status})`;
+  return new Error(message);
+}
+
+/** Create (or reuse) a share code for one conversation in the given mode. */
+export async function createShare(
+  threadId: string,
+  mode: ThreadShareMode = "import",
+): Promise<ThreadShare> {
+  const response = await apiFetch(baseUrl(), {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ thread_id: threadId, mode }),
+  });
+  if (!response.ok) throw await parseError(response, "创建分享失败");
+  return response.json() as Promise<ThreadShare>;
+}
+
+/** List the current user's own share links. */
+export async function listShares(): Promise<ThreadShare[]> {
+  const response = await apiFetch(baseUrl());
+  if (!response.ok) throw await parseError(response, "加载分享列表失败");
+  const json = (await response.json()) as { shares: ThreadShare[] };
+  return json.shares;
+}
+
+/** Revoke a share link so it can no longer be previewed or imported. */
+export async function revokeShare(shareCode: string): Promise<void> {
+  const response = await apiFetch(`${baseUrl()}/${encodeURIComponent(shareCode)}`, {
+    method: "DELETE",
+  });
+  if (!response.ok) throw await parseError(response, "撤销分享失败");
+}
+
+/** Preview a share link before importing it. */
+export async function previewShare(shareCode: string): Promise<SharePreview> {
+  const response = await apiFetch(
+    `${baseUrl()}/${encodeURIComponent(shareCode)}/preview`,
+  );
+  if (!response.ok) throw await parseError(response, "无法读取该分享");
+  return response.json() as Promise<SharePreview>;
+}
+
+/** Import every conversation behind a share link into the current account. */
+export async function importShare(shareCode: string): Promise<ImportResult> {
+  const response = await apiFetch(
+    `${baseUrl()}/${encodeURIComponent(shareCode)}/import`,
+    { method: "POST" },
+  );
+  if (!response.ok) throw await parseError(response, "导入失败");
+  return response.json() as Promise<ImportResult>;
+}
+
+/**
+ * Fetch the public read-only snapshot of a `view`-mode share.
+ *
+ * Uses a plain `fetch` (no auth header) — the `/api/public/` endpoint is
+ * intentionally world-readable so anyone with the link can open it.
+ */
+export async function getPublicShareSnapshot(
+  shareCode: string,
+): Promise<PublicShareSnapshot> {
+  const response = await fetch(
+    `${getBackendBaseURL()}/api/public/shares/${encodeURIComponent(shareCode)}`,
+  );
+  if (!response.ok) throw await parseError(response, "无法打开该分享");
+  return response.json() as Promise<PublicShareSnapshot>;
+}
+
+/** Build the shareable public URL for a `view`-mode share code. */
+export function buildPublicShareUrl(shareCode: string): string {
+  // The app uses HashRouter, so the public viewer lives at `#/share/<code>`.
+  return `${window.location.origin}${window.location.pathname}#/share/${shareCode}`;
+}
+
+/**
+ * Extract a share code from arbitrary pasted text — accepts either a raw code
+ * or a URL/link that contains one. Share codes are 6-12 chars from the
+ * unambiguous alphabet (no 0/1/O/I/L).
+ */
+export function extractShareCode(input: string): string {
+  const trimmed = input.trim();
+  const matches = trimmed.toUpperCase().match(/[A-HJ-NP-Z2-9]{6,12}/g);
+  return matches && matches.length > 0 ? matches[matches.length - 1] : trimmed;
+}

frontend-web/src/core/thread-shares/hooks.ts

@@ -0,0 +1,61 @@
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+
+import {
+  createShare,
+  importShare,
+  listShares,
+  previewShare,
+  revokeShare,
+  type ThreadShareMode,
+} from "./api";
+
+export function useShares(enabled = true) {
+  return useQuery({
+    queryKey: ["thread-shares"],
+    queryFn: listShares,
+    enabled,
+  });
+}
+
+export function useCreateShare() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({
+      threadId,
+      mode = "import",
+    }: {
+      threadId: string;
+      mode?: ThreadShareMode;
+    }) => createShare(threadId, mode),
+    onSuccess: () => {
+      void queryClient.invalidateQueries({ queryKey: ["thread-shares"] });
+    },
+  });
+}
+
+export function useRevokeShare() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (shareCode: string) => revokeShare(shareCode),
+    onSuccess: () => {
+      void queryClient.invalidateQueries({ queryKey: ["thread-shares"] });
+    },
+  });
+}
+
+export function usePreviewShare() {
+  return useMutation({
+    mutationFn: (shareCode: string) => previewShare(shareCode),
+  });
+}
+
+export function useImportShare() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (shareCode: string) => importShare(shareCode),
+    onSuccess: () => {
+      // Imported conversations show up in the user's own thread list.
+      void queryClient.invalidateQueries({ queryKey: ["threads"] });
+    },
+  });
+}

frontend-web/src/pages/AdminScheduledTasksPage.tsx

@@ -0,0 +1,440 @@
+"use client";
+
+import { useEffect, useMemo, useState } from "react";
+import {
+  Edit3,
+  Eye,
+  Pause,
+  Play,
+  RefreshCw,
+  Search,
+  Trash2,
+} from "lucide-react";
+import { useRouteNavigate as useNavigate } from "@/core/route-base";
+import { toast } from "sonner";
+
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import {
+  Dialog,
+  DialogContent,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { ScrollArea } from "@/components/ui/scroll-area";
+import { Textarea } from "@/components/ui/textarea";
+import {
+  WorkspaceBody,
+  WorkspaceContainer,
+  WorkspaceHeader,
+} from "@/components/workspace/workspace-container";
+import {
+  buildCron,
+  DEFAULT_SCHEDULE_CONFIG,
+  parseCron,
+  ScheduleBuilder,
+  type ScheduleConfig,
+  statusLabel,
+  statusVariant,
+} from "@/components/workspace/scheduled-tasks/schedule-builder";
+import {
+  type ScheduledTask,
+  useAdminScheduledTaskActions,
+  useAdminScheduledTaskRuns,
+  useAllScheduledTasks,
+} from "@/core/scheduled-tasks";
+import { cn } from "@/lib/utils";
+
+function formatDate(value?: string | null) {
+  return value ? new Date(value).toLocaleString() : "暂无";
+}
+
+/** Render a creator-like identifier without the email domain part. */
+function displayUsername(value?: string | null): string {
+  const raw = (value ?? "").trim();
+  if (!raw) return "";
+  const at = raw.indexOf("@");
+  return at === -1 ? raw : raw.slice(0, at);
+}
+
+const emptyForm = {
+  name: "",
+  timezone: "Asia/Shanghai",
+  prompt: "",
+};
+
+export default function AdminScheduledTasksPage() {
+  const navigate = useNavigate();
+  const [searchInput, setSearchInput] = useState("");
+  const [search, setSearch] = useState("");
+  const { data: tasks = [], isLoading } = useAllScheduledTasks({ search });
+  const actions = useAdminScheduledTaskActions();
+
+  const [selectedTaskId, setSelectedTaskId] = useState<string | null>(null);
+  const [editing, setEditing] = useState<ScheduledTask | null>(null);
+  const [form, setForm] = useState(emptyForm);
+  const [scheduleConfig, setScheduleConfig] = useState<ScheduleConfig>(
+    DEFAULT_SCHEDULE_CONFIG,
+  );
+
+  const sortedTasks = useMemo(
+    () =>
+      [...tasks].sort((a, b) =>
+        String(a.next_run_at ?? "").localeCompare(String(b.next_run_at ?? "")),
+      ),
+    [tasks],
+  );
+  const selectedTask =
+    sortedTasks.find((task) => task.task_id === selectedTaskId) ?? null;
+  const { data: runs = [], isLoading: runsLoading } =
+    useAdminScheduledTaskRuns(selectedTaskId);
+
+  useEffect(() => {
+    if (!selectedTaskId && sortedTasks[0]) {
+      setSelectedTaskId(sortedTasks[0].task_id);
+    }
+    if (
+      selectedTaskId &&
+      !sortedTasks.some((task) => task.task_id === selectedTaskId)
+    ) {
+      setSelectedTaskId(sortedTasks[0]?.task_id ?? null);
+    }
+  }, [selectedTaskId, sortedTasks]);
+
+  const openEdit = (task: ScheduledTask) => {
+    setEditing(task);
+    setForm({
+      name: task.name,
+      timezone: task.timezone,
+      prompt: task.prompt,
+    });
+    setScheduleConfig(
+      parseCron(task.cron_expr) ??
+        parseCron(task.schedule_text) ??
+        DEFAULT_SCHEDULE_CONFIG,
+    );
+  };
+
+  const closeDialog = () => {
+    setEditing(null);
+    setForm(emptyForm);
+    setScheduleConfig(DEFAULT_SCHEDULE_CONFIG);
+  };
+
+  const saveTask = async () => {
+    if (!editing) return;
+    try {
+      await actions.update.mutateAsync({
+        taskId: editing.task_id,
+        data: {
+          name: form.name,
+          schedule: buildCron(scheduleConfig),
+          timezone: form.timezone,
+          prompt: form.prompt,
+        },
+      });
+      toast.success("任务已更新");
+      closeDialog();
+    } catch (error) {
+      toast.error(error instanceof Error ? error.message : "保存失败");
+    }
+  };
+
+  const toggleEnabled = async (task: ScheduledTask) => {
+    try {
+      await actions.update.mutateAsync({
+        taskId: task.task_id,
+        data: { enabled: !task.enabled },
+      });
+      toast.success(task.enabled ? "任务已暂停" : "任务已启用");
+    } catch (error) {
+      toast.error(error instanceof Error ? error.message : "操作失败");
+    }
+  };
+
+  const removeTask = async (task: ScheduledTask) => {
+    if (!window.confirm(`确认删除任务「${task.name}」？该操作不可撤销。`)) return;
+    try {
+      await actions.remove.mutateAsync(task.task_id);
+      toast.success("任务已删除");
+    } catch (error) {
+      toast.error(error instanceof Error ? error.message : "删除失败");
+    }
+  };
+
+  const triggerTask = async (task: ScheduledTask) => {
+    try {
+      await actions.trigger.mutateAsync(task.task_id);
+      toast.success("已触发执行");
+    } catch (error) {
+      toast.error(error instanceof Error ? error.message : "触发失败");
+    }
+  };
+
+  return (
+    <WorkspaceContainer>
+      <WorkspaceHeader />
+      <WorkspaceBody>
+        <div className="grid size-full min-h-0 grid-cols-1 gap-4 p-4 xl:grid-cols-[460px_minmax(0,1fr)]">
+          <Card className="flex min-h-0 flex-col">
+            <CardHeader className="gap-3">
+              <div>
+                <CardTitle>定时任务管理</CardTitle>
+                <p className="text-muted-foreground mt-1 text-sm">
+                  管理员视图：查看、编辑、删除全部用户的定时任务
+                </p>
+              </div>
+              <form
+                className="flex gap-2"
+                onSubmit={(event) => {
+                  event.preventDefault();
+                  setSearch(searchInput.trim());
+                }}
+              >
+                <Input
+                  value={searchInput}
+                  onChange={(event) => setSearchInput(event.target.value)}
+                  placeholder="按任务名称搜索"
+                />
+                <Button type="submit" variant="outline">
+                  <Search className="size-4" />
+                  搜索
+                </Button>
+              </form>
+            </CardHeader>
+            <CardContent className="min-h-0 flex-1 p-0">
+              <ScrollArea className="size-full">
+                <div className="flex flex-col gap-3 p-4 pt-0">
+                  {isLoading && (
+                    <div className="text-muted-foreground text-sm">
+                      正在加载任务...
+                    </div>
+                  )}
+                  {!isLoading && sortedTasks.length === 0 && (
+                    <div className="text-muted-foreground rounded-md border p-4 text-sm">
+                      没有匹配的定时任务。
+                    </div>
+                  )}
+                  {sortedTasks.map((task) => (
+                    <button
+                      key={task.task_id}
+                      className={cn(
+                        "bg-card text-card-foreground rounded-md border p-4 text-left transition-colors hover:bg-accent/60",
+                        selectedTaskId === task.task_id &&
+                          "border-primary bg-accent",
+                      )}
+                      onClick={() => setSelectedTaskId(task.task_id)}
+                    >
+                      <div className="flex items-start justify-between gap-3">
+                        <div className="min-w-0">
+                          <div className="truncate font-medium">
+                            {task.name}
+                          </div>
+                          <div className="text-muted-foreground mt-1 truncate text-xs">
+                            {task.schedule_text} · {task.timezone}
+                          </div>
+                        </div>
+                        <Badge variant={task.enabled ? "default" : "secondary"}>
+                          {task.enabled ? "启用" : "暂停"}
+                        </Badge>
+                      </div>
+                      <div className="text-muted-foreground mt-3 grid gap-1 text-xs">
+                        <div>
+                          创建者：
+                          {displayUsername(task.creator_email) ||
+                            task.creator_user_id ||
+                            "未知"}
+                        </div>
+                        <div>下次执行：{formatDate(task.next_run_at)}</div>
+                        <div>上次执行：{formatDate(task.last_run_at)}</div>
+                        <div>最近状态：{statusLabel(task.last_status)}</div>
+                      </div>
+                      <div className="mt-3 flex flex-wrap gap-2">
+                        <Button
+                          size="icon"
+                          variant="outline"
+                          title="编辑"
+                          onClick={(event) => {
+                            event.stopPropagation();
+                            openEdit(task);
+                          }}
+                        >
+                          <Edit3 className="size-4" />
+                        </Button>
+                        <Button
+                          size="icon"
+                          variant="outline"
+                          title={task.enabled ? "暂停" : "启用"}
+                          onClick={(event) => {
+                            event.stopPropagation();
+                            void toggleEnabled(task);
+                          }}
+                        >
+                          {task.enabled ? (
+                            <Pause className="size-4" />
+                          ) : (
+                            <Play className="size-4" />
+                          )}
+                        </Button>
+                        <Button
+                          size="icon"
+                          variant="outline"
+                          title="立即执行"
+                          onClick={(event) => {
+                            event.stopPropagation();
+                            void triggerTask(task);
+                          }}
+                        >
+                          <RefreshCw className="size-4" />
+                        </Button>
+                        <Button
+                          size="icon"
+                          variant="destructive"
+                          title="删除"
+                          onClick={(event) => {
+                            event.stopPropagation();
+                            void removeTask(task);
+                          }}
+                        >
+                          <Trash2 className="size-4" />
+                        </Button>
+                      </div>
+                    </button>
+                  ))}
+                </div>
+              </ScrollArea>
+            </CardContent>
+          </Card>
+
+          <Card className="flex min-h-0 flex-col">
+            <CardHeader className="gap-2">
+              <CardTitle>执行记录</CardTitle>
+              <p className="text-muted-foreground text-sm">
+                {selectedTask ? selectedTask.name : "请选择左侧任务"}
+              </p>
+            </CardHeader>
+            <CardContent className="min-h-0 flex-1 p-0">
+              <ScrollArea className="size-full">
+                <div className="flex flex-col gap-3 p-4 pt-0">
+                  {runsLoading && (
+                    <div className="text-muted-foreground text-sm">
+                      正在加载执行记录...
+                    </div>
+                  )}
+                  {!selectedTask && (
+                    <div className="text-muted-foreground rounded-md border p-4 text-sm">
+                      请先选择一个定时任务。
+                    </div>
+                  )}
+                  {!runsLoading && selectedTask && runs.length === 0 && (
+                    <div className="text-muted-foreground rounded-md border p-4 text-sm">
+                      这个任务还没有执行记录。
+                    </div>
+                  )}
+                  {runs.map((run) => (
+                    <div
+                      key={run.id}
+                      className="rounded-md border p-4 transition-colors hover:bg-accent/40"
+                    >
+                      <div className="flex flex-wrap items-start justify-between gap-3">
+                        <div className="min-w-0">
+                          <div className="truncate font-medium">
+                            {run.result?.title || formatDate(run.scheduled_for)}
+                          </div>
+                          <div className="text-muted-foreground mt-1 text-xs">
+                            计划：{formatDate(run.scheduled_for)} · 开始：
+                            {formatDate(run.started_at)}
+                          </div>
+                        </div>
+                        <div className="flex shrink-0 items-center gap-2">
+                          {(run.retry_count ?? 0) > 0 && (
+                            <Badge variant="outline" className="text-xs">
+                              已重试 {run.retry_count}
+                            </Badge>
+                          )}
+                          <Badge variant={statusVariant(run.status)}>
+                            {statusLabel(run.status)}
+                          </Badge>
+                        </div>
+                      </div>
+                      {run.error && (
+                        <div className="text-destructive mt-3 line-clamp-2 text-sm">
+                          {run.error}
+                        </div>
+                      )}
+                      <div className="mt-4 flex flex-wrap gap-2">
+                        <Button
+                          size="sm"
+                          variant="outline"
+                          onClick={() =>
+                            navigate(
+                              `/page/workspace/scheduled/runs/${run.id}`,
+                            )
+                          }
+                        >
+                          <Eye className="size-4" />
+                          查看结果
+                        </Button>
+                      </div>
+                    </div>
+                  ))}
+                </div>
+              </ScrollArea>
+            </CardContent>
+          </Card>
+        </div>
+      </WorkspaceBody>
+
+      <Dialog open={!!editing} onOpenChange={(open) => !open && closeDialog()}>
+        <DialogContent className="max-w-2xl">
+          <DialogHeader>
+            <DialogTitle>编辑定时任务</DialogTitle>
+          </DialogHeader>
+          <div className="flex flex-col gap-3">
+            <Input
+              value={form.name}
+              onChange={(event) =>
+                setForm((value) => ({ ...value, name: event.target.value }))
+              }
+              placeholder="任务名称"
+            />
+            <div className="flex flex-col gap-1">
+              <p className="text-muted-foreground text-xs">执行频率</p>
+              <ScheduleBuilder
+                value={scheduleConfig}
+                onChange={setScheduleConfig}
+              />
+            </div>
+            <Input
+              value={form.timezone}
+              onChange={(event) =>
+                setForm((value) => ({
+                  ...value,
+                  timezone: event.target.value,
+                }))
+              }
+              placeholder="时区，例如：Asia/Shanghai"
+            />
+            <Textarea
+              className="min-h-40"
+              value={form.prompt}
+              onChange={(event) =>
+                setForm((value) => ({ ...value, prompt: event.target.value }))
+              }
+              placeholder="任务 Prompt"
+            />
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={closeDialog}>
+              取消
+            </Button>
+            <Button onClick={saveTask}>保存</Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+    </WorkspaceContainer>
+  );
+}

frontend-web/src/pages/ChatsPage.tsx

@@ -1,10 +1,13 @@
 "use client";
 
+import { DownloadIcon } from "lucide-react";
 import Link from "next/link";
 import { useEffect, useMemo, useState } from "react";
 
+import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { ScrollArea } from "@/components/ui/scroll-area";
+import { ImportConversationsDialog } from "@/components/workspace/thread-share-dialogs";
 import {
   WorkspaceBody,
   WorkspaceContainer,
@@ -20,6 +23,7 @@ export default function ChatsPage() {
   const { t } = useI18n();
   const { data: threads } = useThreads();
   const [search, setSearch] = useState("");
+  const [importOpen, setImportOpen] = useState(false);
 
   useEffect(() => {
     document.title = `${t.pages.chats} - ${t.pages.appName}`;
@@ -38,7 +42,17 @@ export default function ChatsPage() {
       <WorkspaceHeader></WorkspaceHeader>
       <WorkspaceBody>
         <div className="flex size-full flex-col">
-          <header className="flex shrink-0 items-center justify-center pt-8">
+          <header className="flex shrink-0 flex-col items-center gap-3 pt-8">
+            <div className="flex w-full max-w-(--container-width-md) items-center justify-end">
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() => setImportOpen(true)}
+              >
+                <DownloadIcon className="size-4" />
+                {t.threadShare.importChats}
+              </Button>
+            </div>
             <Input
               type="search"
               className="h-12 w-full max-w-(--container-width-md) text-xl"
@@ -70,6 +84,10 @@ export default function ChatsPage() {
           </main>
         </div>
       </WorkspaceBody>
+      <ImportConversationsDialog
+        open={importOpen}
+        onOpenChange={setImportOpen}
+      />
     </WorkspaceContainer>
   );
 }

frontend-web/src/pages/PublicSharePage.tsx

@@ -0,0 +1,105 @@
+"use client";
+
+import type { BaseStream } from "@langchain/langgraph-sdk/react";
+import { useQuery } from "@tanstack/react-query";
+import { Loader2 } from "lucide-react";
+import { useMemo } from "react";
+import { useParams } from "react-router-dom";
+
+import { ArtifactsProvider } from "@/components/workspace/artifacts";
+import { MessageList } from "@/components/workspace/messages";
+import { ThreadContext } from "@/components/workspace/messages/context";
+import { SubtasksProvider } from "@/core/tasks/context";
+import { getPublicShareSnapshot } from "@/core/thread-shares/api";
+import type { AgentThreadState } from "@/core/threads";
+
+/**
+ * Public, read-only conversation viewer.
+ *
+ * Reachable at `#/share/<code>` with NO authentication — anyone with the link
+ * can open it. It renders a frozen snapshot of a `view`-mode shared
+ * conversation; there is no input box, so viewers cannot send new messages.
+ */
+export default function PublicSharePage() {
+  const { shareCode } = useParams<{ shareCode: string }>();
+
+  const { data, isLoading, isError } = useQuery({
+    queryKey: ["public-share", shareCode],
+    queryFn: () => getPublicShareSnapshot(shareCode!),
+    enabled: !!shareCode,
+    retry: false,
+    refetchOnWindowFocus: false,
+  });
+
+  // A minimal static stand-in for the live LangGraph stream. MessageList only
+  // reads `messages`, `values.artifacts`, `isLoading` and `isThreadLoading`.
+  const thread = useMemo(() => {
+    const messages = data?.messages ?? [];
+    return {
+      messages,
+      values: {
+        title: data?.title ?? "",
+        messages,
+        artifacts: data?.artifacts ?? [],
+        todos: [],
+      },
+      isLoading: false,
+      isThreadLoading: false,
+      error: undefined,
+      interrupt: undefined,
+    } as unknown as BaseStream<AgentThreadState>;
+  }, [data]);
+
+  if (isLoading) {
+    return (
+      <div className="bg-background text-muted-foreground flex h-screen items-center justify-center gap-2 text-sm">
+        <Loader2 className="size-4 animate-spin" />
+        正在加载分享内容…
+      </div>
+    );
+  }
+
+  if (isError || !data) {
+    return (
+      <div className="bg-background flex h-screen flex-col items-center justify-center gap-2 px-6 text-center">
+        <p className="text-lg font-medium">分享不可用</p>
+        <p className="text-muted-foreground text-sm">
+          该分享链接不存在、已被撤销，或不是只读分享。
+        </p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="bg-background flex h-screen flex-col">
+      <header className="flex shrink-0 flex-col gap-1 border-b px-6 py-3">
+        <div className="flex items-center gap-2">
+          <h1 className="truncate text-base font-semibold">
+            {data.title || "未命名对话"}
+          </h1>
+          <span className="bg-muted text-muted-foreground shrink-0 rounded-full px-2 py-0.5 text-xs">
+            只读分享
+          </span>
+        </div>
+        <p className="text-muted-foreground text-xs">
+          这是一个只读对话快照，你可以查看全部内容，但无法继续提问。
+        </p>
+      </header>
+      <main className="min-h-0 flex-1">
+        <SubtasksProvider>
+          <ArtifactsProvider>
+            <ThreadContext.Provider
+              value={{ thread, isMock: true, publicShareCode: shareCode }}
+            >
+              <MessageList
+                threadId={shareCode ?? "public-share"}
+                thread={thread}
+                paddingBottom={48}
+              />
+            </ThreadContext.Provider>
+          </ArtifactsProvider>
+        </SubtasksProvider>
+      </main>
+    </div>
+  );
+}

frontend-web/src/pages/ScheduledTasksPage.tsx

@@ -51,199 +51,17 @@ import {
   useScheduledTasks,
   usePublishedScheduledTasks,
 } from "@/core/scheduled-tasks";
+import {
+  buildCron,
+  DEFAULT_SCHEDULE_CONFIG,
+  parseCron,
+  ScheduleBuilder,
+  type ScheduleConfig,
+  statusLabel,
+  statusVariant,
+} from "@/components/workspace/scheduled-tasks/schedule-builder";
 import { cn } from "@/lib/utils";
 
-// ---- 时间配置 ----
-type ScheduleFreq = "hourly" | "daily" | "weekly" | "monthly";
-
-interface ScheduleConfig {
-  freq: ScheduleFreq;
-  minute: number;
-  hour: number;
-  weekday: number;
-  date: number;
-}
-
-const DEFAULT_SCHEDULE_CONFIG: ScheduleConfig = {
-  freq: "daily",
-  minute: 0,
-  hour: 9,
-  weekday: 1,
-  date: 1,
-};
-
-const WEEKDAYS = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"];
-const HOURS = Array.from({ length: 24 }, (_, i) => i);
-const MINUTES = [0, 15, 30, 45];
-const DATES = Array.from({ length: 31 }, (_, i) => i + 1);
-
-function buildCron(cfg: ScheduleConfig): string {
-  // Keep the minute slot when the user picked one for daily/weekly/monthly too,
-  // so "每天 9:30" doesn't silently truncate to 9:00 on save → reload round trips.
-  const m = Number.isFinite(cfg.minute) ? cfg.minute : 0;
-  switch (cfg.freq) {
-    case "hourly":
-      return `${m} * * * *`;
-    case "daily":
-      return `${m} ${cfg.hour} * * *`;
-    case "weekly":
-      return `${m} ${cfg.hour} * * ${cfg.weekday}`;
-    case "monthly":
-      return `${m} ${cfg.hour} ${cfg.date} * *`;
-  }
-}
-
-// Parse a 5-field cron expression into the form picker state.
-//
-// Bug we keep getting bitten by: the edit dialog used to call
-// `parseCron(task.schedule_text)` and `schedule_text` may be the raw user
-// input (free-text like "每天 9 点") rather than a real cron string. The
-// fallback `DEFAULT_SCHEDULE_CONFIG` then made the picker silently
-// reinterpret the task as "every day at 09:00" — or, when natural-language
-// resolved to "0 * * * *" on the backend, the picker honestly reflected
-// that as "每小时 0 分". Either way the user lost their original intent.
-//
-// Caller now prefers `task.cron_expr` (the canonical schedule produced by
-// `_schedule_to_cron`); this function stays the single source of truth for
-// cron → picker, and also handles the looser step-syntax variants
-// (e.g. "0 [STAR]/3 * * *") we sometimes generate.
-function parseCron(cron: string | null | undefined): ScheduleConfig | null {
-  if (!cron) return null;
-  const parts = cron.trim().split(/\s+/);
-  if (parts.length !== 5) return null;
-  const [min, hr, date, , wd] = parts;
-  const minute = parseInt(min ?? "", 10);
-  const hour = parseInt(hr ?? "", 10);
-
-  // Hourly: ``M * * * *`` — match before the daily branch so a minute-only
-  // cron isn't misread as daily.
-  if (hr === "*" && date === "*" && wd === "*") {
-    if (!isNaN(minute)) {
-      return { ...DEFAULT_SCHEDULE_CONFIG, freq: "hourly", minute };
-    }
-  }
-  // ``0 */N * * *`` (every N hours): map to hourly with that minute; the
-  // picker doesn't model "every N hours" yet, so this is the safest fallback
-  // that at least doesn't silently round to 9:00.
-  if ((hr ?? "").startsWith("*/") && date === "*" && wd === "*") {
-    if (!isNaN(minute)) {
-      return { ...DEFAULT_SCHEDULE_CONFIG, freq: "hourly", minute };
-    }
-  }
-  if (date === "*" && wd === "*") {
-    if (!isNaN(hour)) {
-      return {
-        ...DEFAULT_SCHEDULE_CONFIG,
-        freq: "daily",
-        hour,
-        minute: isNaN(minute) ? 0 : minute,
-      };
-    }
-  }
-  if (date === "*" && wd !== "*") {
-    const weekday = parseInt(wd ?? "", 10);
-    if (!isNaN(hour) && !isNaN(weekday)) {
-      return {
-        ...DEFAULT_SCHEDULE_CONFIG,
-        freq: "weekly",
-        hour,
-        weekday,
-        minute: isNaN(minute) ? 0 : minute,
-      };
-    }
-  }
-  if (wd === "*" && date !== "*") {
-    const d = parseInt(date ?? "", 10);
-    if (!isNaN(hour) && !isNaN(d)) {
-      return {
-        ...DEFAULT_SCHEDULE_CONFIG,
-        freq: "monthly",
-        hour,
-        date: d,
-        minute: isNaN(minute) ? 0 : minute,
-      };
-    }
-  }
-  return null;
-}
-
-function ScheduleBuilder({
-  value,
-  onChange,
-}: {
-  value: ScheduleConfig;
-  onChange: (cfg: ScheduleConfig) => void;
-}) {
-  const set = (patch: Partial<ScheduleConfig>) => onChange({ ...value, ...patch });
-  return (
-    <div className="flex flex-wrap gap-2">
-      <Select value={value.freq} onValueChange={(v) => set({ freq: v as ScheduleFreq })}>
-        <SelectTrigger className="w-28">
-          <SelectValue />
-        </SelectTrigger>
-        <SelectContent>
-          <SelectItem value="hourly">每小时</SelectItem>
-          <SelectItem value="daily">每天</SelectItem>
-          <SelectItem value="weekly">每周</SelectItem>
-          <SelectItem value="monthly">每月</SelectItem>
-        </SelectContent>
-      </Select>
-
-      {value.freq === "hourly" && (
-        <Select value={String(value.minute)} onValueChange={(v) => set({ minute: parseInt(v) })}>
-          <SelectTrigger className="w-24">
-            <SelectValue />
-          </SelectTrigger>
-          <SelectContent>
-            {MINUTES.map((m) => (
-              <SelectItem key={m} value={String(m)}>{m} 分</SelectItem>
-            ))}
-          </SelectContent>
-        </Select>
-      )}
-
-      {value.freq === "weekly" && (
-        <Select value={String(value.weekday)} onValueChange={(v) => set({ weekday: parseInt(v) })}>
-          <SelectTrigger className="w-24">
-            <SelectValue />
-          </SelectTrigger>
-          <SelectContent>
-            {WEEKDAYS.map((d, i) => (
-              <SelectItem key={i} value={String(i)}>{d}</SelectItem>
-            ))}
-          </SelectContent>
-        </Select>
-      )}
-
-      {value.freq === "monthly" && (
-        <Select value={String(value.date)} onValueChange={(v) => set({ date: parseInt(v) })}>
-          <SelectTrigger className="w-24">
-            <SelectValue />
-          </SelectTrigger>
-          <SelectContent>
-            {DATES.map((d) => (
-              <SelectItem key={d} value={String(d)}>第 {d} 日</SelectItem>
-            ))}
-          </SelectContent>
-        </Select>
-      )}
-
-      {value.freq !== "hourly" && (
-        <Select value={String(value.hour)} onValueChange={(v) => set({ hour: parseInt(v) })}>
-          <SelectTrigger className="w-24">
-            <SelectValue />
-          </SelectTrigger>
-          <SelectContent>
-            {HOURS.map((h) => (
-              <SelectItem key={h} value={String(h)}>{h} 时</SelectItem>
-            ))}
-          </SelectContent>
-        </Select>
-      )}
-    </div>
-  );
-}
-
 function formatDate(value?: string | null) {
   return value ? new Date(value).toLocaleString() : "暂无";
 }
@@ -256,28 +74,6 @@ function displayUsername(value?: string | null): string {
   return at === -1 ? raw : raw.slice(0, at);
 }
 
-function statusLabel(status?: string | null) {
-  switch (status) {
-    case "succeeded":
-      return "成功";
-    case "failed":
-      return "失败";
-    case "running":
-      return "执行中";
-    case "pending":
-      return "等待中";
-    default:
-      return status || "未知";
-  }
-}
-
-function statusVariant(status?: string | null): "default" | "secondary" | "destructive" | "outline" {
-  if (status === "succeeded") return "default";
-  if (status === "failed") return "destructive";
-  if (status === "running") return "secondary";
-  return "outline";
-}
-
 const emptyForm = {
   name: "",
   schedule: "",

frontend-web/src/pages/WorkspaceRoutes.tsx

@@ -18,6 +18,7 @@ import ChatPage from "./ChatPage";
 import AgentsPage from "./AgentsPage";
 import AgentChatPage from "./AgentChatPage";
 import NewAgentPage from "./NewAgentPage";
+import AdminScheduledTasksPage from "./AdminScheduledTasksPage";
 import ScheduledTaskRunDetailPage from "./ScheduledTaskRunDetailPage";
 import ScheduledTasksPage from "./ScheduledTasksPage";
 import LlmMetricsPage from "./LlmMetricsPage";
@@ -184,6 +185,18 @@ export default function WorkspaceRoutes({
           </WorkspaceLayout>
         }
       />
+      <Route
+        path="admin/scheduled-tasks"
+        element={
+          getStoredAuth()?.system_role === "admin" ? (
+            <WorkspaceLayout {...layoutProps}>
+              <AdminScheduledTasksPage />
+            </WorkspaceLayout>
+          ) : (
+            <Navigate to="/page/workspace/chats/new" replace />
+          )
+        }
+      />
       <Route
         path="admin/tags"
         element={

offline-backend-20260512/backend/CLAUDE.md

@@ -214,7 +214,7 @@ FastAPI application on port 8001 with health check at `GET /health`. Set `GATEWA
 |--------|-----------|
 | **Models** (`/api/models`) | `GET /` - list models; `GET /{name}` - model details |
 | **MCP** (`/api/mcp`) | `GET /config` - get config; `PUT /config` - update config (saves to extensions_config.json) |
-| **Skills** (`/api/skills`) | `GET /` - list skills (optional `search` fuzzy-name + `tag_id` filters; each item carries `tags` + owner-authored `detail`); `GET /{name}` - details; `PUT /{name}` - update enabled; `PUT /{name}/detail` - set the long-form `detail` text (custom skill: owner or admin; built-in/public: admin only — materializes a `skills` row on demand); `POST /install` - install from .skill archive (accepts standard optional frontmatter like `version`, `author`, `compatibility`) |
+| **Skills** (`/api/skills`) | `GET /` - list skills (optional `search` fuzzy-name + `tag_id` filters; each item carries `tags` + owner-authored `detail`); `GET /{name}` - details; `PUT /{name}` - update enabled; `PUT /{name}/detail` - set the long-form `detail` text (custom skill: owner or admin; built-in/public: admin only — materializes a `skills` row on demand); `GET /{name}/content` - raw SKILL.md source, restricted to an admin or the publisher (custom-skill owner); other users get 403 and see only description + detail; `POST /install` - install from .skill archive (accepts standard optional frontmatter like `version`, `author`, `compatibility`) |
 | **Memory** (`/api/memory`) | `GET /` - memory data; `POST /reload` - force reload; `GET /config` - config; `GET /status` - config + data |
 | **Agents** (`/api/agents`) | `GET /` - list built-in, owned, and published agents (optional `search` + `tag_id` filters; each item carries `tags`); `POST /` - create user-owned agent; `GET/PUT/DELETE /{id}` - read/update/delete by stable agent id; `GET /check` - validate non-empty display name (duplicates allowed) |
 | **Tags** (`/api/tags`) | `GET /` - list tags (optional `tag_type` filter; open to all); `POST /` - create tag (admin); `PUT /{id}` / `DELETE /{id}` - update/delete tag (admin); `GET /assignments/{target_type}/{target_id}` - tags on a resource; `PUT /assignments/{target_type}/{target_id}` - replace a resource's tags (admin). Tags are typed `agent`/`skill`/`scheduled_task` and may only tag resources of their own type. |
@@ -225,9 +225,18 @@ FastAPI application on port 8001 with health check at `GET /health`. Set `GATEWA
 | **Thread Runs** (`/api/threads/{id}/runs`) | `POST /` - create background run; `POST /stream` - create + SSE stream; `POST /wait` - create + block; `GET /` - list runs; `GET /{rid}` - run details; `POST /{rid}/cancel` - cancel; `GET /{rid}/join` - join SSE; `GET /{rid}/messages` - paginated messages `{data, has_more}`; `GET /{rid}/events` - full event stream; `GET /../messages` - thread messages with feedback; `GET /../token-usage` - aggregate tokens |
 | **Feedback** (`/api/threads/{id}/runs/{rid}/feedback`) | `PUT /` - upsert feedback; `DELETE /` - delete user feedback; `POST /` - create feedback; `GET /` - list feedback; `GET /stats` - aggregate stats; `DELETE /{fid}` - delete specific |
 | **Runs** (`/api/runs`) | `POST /stream` - stateless run + SSE; `POST /wait` - stateless run + block; `GET /{rid}/messages` - paginated messages by run_id `{data, has_more}` (cursor: `after_seq`/`before_seq`); `GET /{rid}/feedback` - list feedback by run_id |
+| **Thread Shares** (`/api/thread-shares`) | Per-conversation sharing with two modes (`thread_shares.mode`). **`import`**: `POST /` `{thread_id, mode}` - create (or reuse) a revocable share code; `GET /{code}/preview` + `POST /{code}/import` - copy that conversation into the caller's account (fresh `thread_id` via `app/gateway/thread_copy.py` + new `threads_meta` row + `user-data` copy; dedup on `metadata.shared_origin`). **`view`**: a public, read-only static page — see Public Shares below. Both modes: `GET /` - list my codes; `DELETE /{code}` - revoke. |
+| **Public Shares** (`/api/public/shares`) | **Unauthenticated** (the `/api/public/` prefix is whitelisted in `auth_middleware._PUBLIC_PATH_PREFIXES`). `GET /{code}` - read-only conversation snapshot (title + serialized messages + artifacts) for a `view`-mode share; messages are read straight from the latest checkpoint. `GET /{code}/files/{path}` - serves an **image** referenced by that conversation (images only — non-image paths 404; SVG forced to download). Missing/revoked/non-`view` codes all return 404. |
+| **Scheduled Tasks** (`/api/scheduled-tasks`) | Per-user cron-like agent tasks. `GET/POST /` - list/create owned tasks; `PATCH/DELETE /{id}` - update/delete (owner); `POST /{id}/{pause,resume,trigger}`; `GET /{id}/runs`, `GET/DELETE /runs/{rid}`, run-file preview/edit/download; publish/subscribe under `/{id}/{publish,unpublish,subscribe}` and `GET /published`. **Admin (cross-user):** `GET /admin/all` - every task; `PATCH/DELETE /admin/{id}` - edit/delete any task; `POST /admin/{id}/trigger`; `GET /admin/{id}/runs`. Admin routes require `system_role == "admin"`. |
 
 Proxied through nginx: `/api/langgraph/*` → LangGraph, all other `/api/*` → Gateway.
 
+### Scheduled Task Runtime
+
+`ScheduledTaskService` (`deerflow/runtime/scheduler/service.py`) polls due tasks every `poll_interval_seconds` and executes each in its own throwaway thread, serialized by a shared `_agent_run_lock`.
+
+**Stuck-run recovery**: each execution attempt is bounded by `_RUN_ATTEMPT_TIMEOUT_SECONDS` (30 min) via `asyncio.wait_for`. On timeout the run is retried up to `_MAX_RUN_RETRIES` (3) times, then marked `failed`. A watchdog (`_reconcile_stuck_runs`, run every poll) recovers runs left in `running` with no in-process owner — e.g. orphaned by a crash or restart — re-driving them through the same retry budget so a task can never stay perpetually "executing". The `scheduled_task_runs.retry_count` column tracks consumed retries.
+
 ### Custom Agent Persistence
 
 Custom agent metadata lives in the `agents` ORM table (`deerflow.persistence.agents`). `agents.id` is the stable runtime id and the filesystem directory name under `.deer-flow/agents/{id}/`; `agents.name` is display-only, can contain Chinese characters, and is not unique. `user_id IS NULL` marks built-in agents, user-owned agents are visible only to their owner unless `published = true`, and update/delete operations require ownership. The runtime accepts `agent_id` in context/configurable, and non-default `assistant_id` values are treated as agent ids after visibility checks.

offline-backend-20260512/backend/app/gateway/app.py

@@ -41,6 +41,7 @@ from app.gateway.routers import (
     system_settings,
     tags,
     thread_runs,
+    thread_shares,
     threads,
     uploads,
 )
@@ -701,6 +702,10 @@ This gateway provides custom endpoints for models, MCP configuration, skills, an
     # Thread Runs API (LangGraph Platform-compatible runs lifecycle)
     app.include_router(thread_runs.router)
 
+    app.include_router(thread_shares.router)
+    # Public, unauthenticated read-only share snapshots (/api/public/shares/*).
+    app.include_router(thread_shares.public_router)
+
     # Stateless Runs API (stream/wait without a pre-existing thread)
     app.include_router(runs.router)
 

offline-backend-20260512/backend/app/gateway/auth_middleware.py

@@ -23,11 +23,16 @@ from app.gateway.internal_auth import INTERNAL_AUTH_HEADER_NAME, get_internal_us
 from deerflow.runtime.user_context import reset_current_user, set_current_user
 
 # Paths that never require authentication.
+#
+# ``/api/public/`` is a namespace reserved for intentionally world-readable,
+# read-only endpoints (e.g. public conversation share snapshots). Only mount
+# safe read-only routes under it — everything there bypasses auth entirely.
 _PUBLIC_PATH_PREFIXES: tuple[str, ...] = (
     "/health",
     "/docs",
     "/redoc",
     "/openapi.json",
+    "/api/public/",
 )
 
 # Exact auth paths that are public (login/register/status check).

offline-backend-20260512/backend/app/gateway/deps.py

@@ -122,6 +122,10 @@ async def langgraph_runtime(app: FastAPI) -> AsyncGenerator[None, None]:
 
         app.state.tag_store = make_tag_store(sf)
 
+        from deerflow.persistence.thread_shares import make_thread_share_store
+
+        app.state.thread_share_store = make_thread_share_store(sf)
+
         # Run event store (has its own factory with config-driven backend selection)
         run_events_config = getattr(config, "run_events", None)
         app.state.run_event_store = make_run_event_store(run_events_config)
@@ -222,6 +226,14 @@ def get_tag_store(request: Request) -> TagStore:
     return val
 
 
+def get_thread_share_store(request: Request):
+    """Return the conversation share-link store."""
+    val = getattr(request.app.state, "thread_share_store", None)
+    if val is None:
+        raise HTTPException(status_code=503, detail="Thread share store not available")
+    return val
+
+
 def get_run_context(request: Request) -> RunContext:
     """Build a :class:`RunContext` from ``app.state`` singletons.
 

offline-backend-20260512/backend/app/gateway/routers/scheduled_tasks.py

@@ -14,7 +14,7 @@ from fastapi import APIRouter, HTTPException, Query, Request
 from fastapi.responses import FileResponse, Response, StreamingResponse
 from pydantic import BaseModel, Field
 
-from app.gateway.deps import get_current_user, get_local_provider, get_tag_store
+from app.gateway.deps import get_current_user, get_local_provider, get_optional_user_from_request, get_tag_store
 from deerflow.runtime.scheduler import get_scheduled_task_service
 
 router = APIRouter(prefix="/api/scheduled-tasks", tags=["scheduled-tasks"])
@@ -61,6 +61,26 @@ async def _user_id(request: Request) -> str:
     return user_id
 
 
+async def _is_admin(request: Request) -> bool:
+    """True when the caller is an admin (or auth is disabled entirely)."""
+    user = await get_optional_user_from_request(request)
+    if user is None:
+        return True
+    return getattr(user, "system_role", None) == "admin"
+
+
+async def _load_run(service, request: Request, run_id: str, user_id: str) -> dict[str, Any] | None:
+    """Owner/subscriber run lookup, with an admin fallback to any run.
+
+    Lets admins open run results for tasks they do not own (the admin
+    management view links into the shared run-detail page).
+    """
+    run = await _load_run(service, request, run_id, user_id)
+    if run is None and await _is_admin(request):
+        run = await service.admin_get_run(run_id)
+    return run
+
+
 async def _enrich_with_creator(tasks: list[dict[str, Any]] | dict[str, Any] | None) -> Any:
     """Attach ``creator_email`` / ``creator_user_id`` to one or many task dicts.
 
@@ -208,7 +228,7 @@ async def list_scheduled_task_runs(task_id: str, request: Request, limit: int =
 async def get_scheduled_task_run(run_id: str, request: Request) -> dict:
     service = get_scheduled_task_service()
     user_id = await _user_id(request)
-    run = await service.get_run(user_id, run_id)
+    run = await _load_run(service, request, run_id, user_id)
     if run is None:
         raise HTTPException(status_code=404, detail=f"Run {run_id} not found")
     return run
@@ -231,7 +251,7 @@ async def delete_scheduled_task_run(run_id: str, request: Request) -> dict:
 async def get_scheduled_task_run_file(run_id: str, file_index: int, request: Request) -> dict:
     service = get_scheduled_task_service()
     user_id = await _user_id(request)
-    run = await service.get_run(user_id, run_id)
+    run = await _load_run(service, request, run_id, user_id)
     if run is None:
         raise HTTPException(status_code=404, detail=f"Run {run_id} not found")
     item, path = _run_file_path(run, file_index)
@@ -279,7 +299,7 @@ async def update_scheduled_task_run_file(
 async def download_scheduled_task_run(run_id: str, request: Request):
     service = get_scheduled_task_service()
     user_id = await _user_id(request)
-    run = await service.get_run(user_id, run_id)
+    run = await _load_run(service, request, run_id, user_id)
     if run is None:
         raise HTTPException(status_code=404, detail=f"Run {run_id} not found")
 
@@ -328,7 +348,7 @@ async def download_scheduled_task_run(run_id: str, request: Request):
 async def download_scheduled_task_run_file(run_id: str, file_index: int, request: Request):
     service = get_scheduled_task_service()
     user_id = await _user_id(request)
-    run = await service.get_run(user_id, run_id)
+    run = await _load_run(service, request, run_id, user_id)
     if run is None:
         raise HTTPException(status_code=404, detail=f"Run {run_id} not found")
     item, path = _run_file_path(run, file_index)
@@ -497,3 +517,82 @@ async def delete_scheduled_task_subscription(task_id: str, request: Request) ->
     if not deleted:
         raise HTTPException(status_code=404, detail="Subscription not found")
     return {"success": True}
+
+
+# --- Admin (cross-user management) ---
+
+
+async def _require_admin(request: Request) -> None:
+    """Reject non-admins. Lets the call through when auth is disabled."""
+    user = await get_optional_user_from_request(request)
+    if user is None:
+        return
+    if getattr(user, "system_role", None) != "admin":
+        raise HTTPException(status_code=403, detail="定时任务管理仅限管理员")
+
+
+@router.get("/admin/all")
+async def admin_list_scheduled_tasks(
+    request: Request,
+    search: str | None = Query(default=None, description="Case-insensitive fuzzy match on task name"),
+) -> list[dict]:
+    """List every scheduled task across all users. Admin-only."""
+    await _require_admin(request)
+    service = get_scheduled_task_service()
+    tasks = await service.admin_list_tasks()
+    await _enrich_with_creator(tasks)
+
+    tag_store = get_tag_store(request)
+    assignments = await tag_store.list_assignments("scheduled_task", [str(t.get("task_id")) for t in tasks])
+    for task in tasks:
+        task["tags"] = assignments.get(str(task.get("task_id")), [])
+    if search:
+        needle = search.strip().lower()
+        tasks = [t for t in tasks if needle in str(t.get("name", "")).lower()]
+    return tasks
+
+
+@router.get("/admin/{task_id}/runs")
+async def admin_list_scheduled_task_runs(task_id: str, request: Request, limit: int = 50) -> list[dict]:
+    """List runs for any task regardless of owner. Admin-only."""
+    await _require_admin(request)
+    service = get_scheduled_task_service()
+    return await service.admin_list_runs(task_id, limit=max(1, min(limit, 200)))
+
+
+@router.patch("/admin/{task_id}")
+async def admin_update_scheduled_task(task_id: str, body: ScheduledTaskUpdateRequest, request: Request) -> dict:
+    """Update any task regardless of owner. Admin-only."""
+    await _require_admin(request)
+    service = get_scheduled_task_service()
+    task = await service.admin_update_task(task_id, body.model_dump(exclude_unset=True))
+    if task is None:
+        raise HTTPException(status_code=404, detail=f"Task {task_id} not found")
+    await _enrich_with_creator(task)
+    return task
+
+
+@router.delete("/admin/{task_id}")
+async def admin_delete_scheduled_task(task_id: str, request: Request) -> dict:
+    """Delete any task regardless of owner. Admin-only."""
+    await _require_admin(request)
+    service = get_scheduled_task_service()
+    deleted = await service.admin_delete_task(task_id)
+    if not deleted:
+        raise HTTPException(status_code=404, detail=f"Task {task_id} not found")
+    try:
+        await get_tag_store(request).unassign_all("scheduled_task", task_id)
+    except Exception:  # noqa: BLE001 — tag cleanup must not block deletion
+        pass
+    return {"success": True}
+
+
+@router.post("/admin/{task_id}/trigger")
+async def admin_trigger_scheduled_task(task_id: str, request: Request) -> dict:
+    """Trigger an immediate run of any task regardless of owner. Admin-only."""
+    await _require_admin(request)
+    service = get_scheduled_task_service()
+    task = await service.admin_trigger_task(task_id)
+    if task is None:
+        raise HTTPException(status_code=404, detail=f"Task {task_id} not found")
+    return {"success": True, "task": task}

offline-backend-20260512/backend/app/gateway/routers/skills.py

@@ -45,6 +45,24 @@ def _is_admin_user(request: Request) -> bool:
     return getattr(user, "system_role", None) == "admin"
 
 
+def _can_view_skill_source(
+    category: SkillCategory,
+    owner_user_id: str | None,
+    user_id: str,
+    *,
+    is_admin: bool,
+) -> bool:
+    """Whether the raw SKILL.md source is visible to a user.
+
+    Admins may view any skill's source; otherwise only the publisher (the
+    owner of a custom skill) qualifies. Built-in / public skills have no human
+    owner, so for non-admins they are never source-visible.
+    """
+    if is_admin:
+        return True
+    return category == SkillCategory.CUSTOM and owner_user_id is not None and owner_user_id == user_id
+
+
 async def _get_owned_skill_or_raise(store: SkillStore, name: str, user_id: str) -> dict[str, Any]:
     owned = await store.get_owned(name, user_id)
     if owned is not None:
@@ -870,15 +888,27 @@ class SkillContentResponse(BaseModel):
     "/skills/{skill_name}/content",
     response_model=SkillContentResponse,
     summary="Get Skill Markdown Content",
-    description="Retrieve the raw SKILL.md content of a specific skill (public or custom).",
+    description="Retrieve the raw SKILL.md content of a skill. Only an admin or the skill's publisher (owner of a custom skill) may read it; other users see only the description and detail.",
 )
-async def get_skill_content(skill_name: str, config: AppConfig = Depends(get_config)) -> SkillContentResponse:
+async def get_skill_content(
+    skill_name: str,
+    request: Request,
+    config: AppConfig = Depends(get_config),
+    skill_store: SkillStore = Depends(get_skill_store),
+) -> SkillContentResponse:
     try:
         skill_name = skill_name.replace("\r\n", "").replace("\n", "")
         skills = get_or_new_skill_storage(app_config=config).load_skills(enabled_only=False)
         skill = next((s for s in skills if s.name == skill_name), None)
         if skill is None:
             raise HTTPException(status_code=404, detail=f"Skill '{skill_name}' not found")
+        # The raw SKILL.md is implementation detail — only an admin or the
+        # publisher (owner of a custom skill) may view it. Everyone else is
+        # limited to the description + detail surfaced by the list/detail APIs.
+        record = await skill_store.get_any(skill_name)
+        owner_user_id = record.get("owner_user_id") if record else None
+        if not _can_view_skill_source(skill.category, owner_user_id, _current_user_id(request), is_admin=_is_admin_user(request)):
+            raise HTTPException(status_code=403, detail="Only the skill publisher or an admin can view the SKILL.md source")
         content = skill.skill_file.read_text(encoding="utf-8")
         return SkillContentResponse(name=skill.name, category=skill.category, content=content)
     except HTTPException:

offline-backend-20260512/backend/app/gateway/routers/thread_shares.py

@@ -0,0 +1,340 @@
+"""Conversation sharing API.
+
+A user creates a share code for *one* of their conversations; redeeming the
+code copies that conversation into the redeemer's account as an independent
+copy they fully own and can keep chatting in. See ``app/gateway/thread_copy.py``
+for the checkpoint duplication.
+"""
+
+from __future__ import annotations
+
+import logging
+import mimetypes
+import shutil
+import uuid
+from pathlib import Path
+
+from fastapi import APIRouter, Depends, HTTPException, Request
+from fastapi.responses import FileResponse
+from pydantic import BaseModel, Field
+
+from app.gateway.deps import get_checkpointer, get_thread_share_store, get_thread_store
+from app.gateway.thread_copy import copy_thread_state
+from deerflow.config.paths import get_paths
+from deerflow.persistence.thread_meta.base import ThreadMetaStore
+from deerflow.persistence.thread_shares.base import ThreadShareStore
+from deerflow.runtime import serialize_channel_values
+from deerflow.runtime.user_context import get_effective_user_id
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/api/thread-shares", tags=["thread-shares"])
+
+# Public, unauthenticated router. Its prefix is whitelisted in
+# ``auth_middleware._PUBLIC_PATH_PREFIXES`` — only mount read-only endpoints
+# that are intentionally world-readable here.
+public_router = APIRouter(prefix="/api/public/shares", tags=["thread-shares-public"])
+
+_UNTITLED = "未命名对话"
+
+# Valid share modes. "import" copies the conversation into the recipient's
+# account; "view" is a public read-only static page anyone can open.
+_SHARE_MODES = ("import", "view")
+
+
+def _current_user_id(request: Request) -> str:
+    user = getattr(request.state, "user", None)
+    if user is not None:
+        return str(user.id)
+    return get_effective_user_id()
+
+
+# ---------------------------------------------------------------------------
+# Request / response models
+# ---------------------------------------------------------------------------
+
+
+class CreateShareRequest(BaseModel):
+    thread_id: str = Field(..., description="The conversation to share")
+    mode: str = Field(
+        default="import",
+        description='"import" — recipient copies the conversation; "view" — public read-only page',
+    )
+
+
+class ShareResponse(BaseModel):
+    share_code: str = Field(..., description="Short code that recipients enter to import")
+    owner_user_id: str = Field(..., description="User who created the share")
+    thread_id: str = Field(..., description="The shared conversation")
+    revoked: bool = Field(default=False, description="Whether the code has been revoked")
+    mode: str = Field(default="import", description='"import" or "view"')
+    created_at: str | None = Field(default=None, description="Creation timestamp (ISO-8601)")
+
+
+class PublicShareSnapshotResponse(BaseModel):
+    """Read-only conversation snapshot served to anonymous viewers."""
+
+    share_code: str
+    title: str = Field(..., description="Conversation title")
+    mode: str = Field(default="view")
+    messages: list[dict] = Field(default_factory=list, description="Serialized conversation messages")
+    artifacts: list[str] = Field(default_factory=list, description="Artifact virtual paths produced in the conversation")
+    created_at: str | None = Field(default=None, description="When the share was created (ISO-8601)")
+
+
+class SharesListResponse(BaseModel):
+    shares: list[ShareResponse]
+
+
+class SharePreviewResponse(BaseModel):
+    share_code: str
+    shared_by: str = Field(..., description="Owner user id of the shared conversation")
+    title: str = Field(..., description="Title of the shared conversation")
+
+
+class ImportResultResponse(BaseModel):
+    imported: int = Field(..., description="1 when the conversation was copied, else 0")
+    skipped: int = Field(..., description="1 when it was already imported, else 0")
+
+
+# ---------------------------------------------------------------------------
+# Owner side — create / list / revoke
+# ---------------------------------------------------------------------------
+
+
+@router.post("", response_model=ShareResponse, summary="Create a share code for one conversation")
+async def create_share(
+    body: CreateShareRequest,
+    request: Request,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+    thread_store: ThreadMetaStore = Depends(get_thread_store),
+) -> ShareResponse:
+    me = _current_user_id(request)
+    mode = body.mode if body.mode in _SHARE_MODES else "import"
+    # Only the conversation's owner may share it.
+    meta = await thread_store.get(body.thread_id, user_id=me)
+    if meta is None:
+        raise HTTPException(status_code=404, detail="Conversation not found")
+    # Reuse an existing active code (of the same mode) so re-sharing is idempotent.
+    existing = await share_store.get_active_for_thread(me, body.thread_id, mode=mode)
+    if existing is not None:
+        return ShareResponse(**existing)
+    record = await share_store.create(me, body.thread_id, mode=mode)
+    return ShareResponse(**record)
+
+
+@router.get("", response_model=SharesListResponse, summary="List my conversation share codes")
+async def list_shares(
+    request: Request,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+) -> SharesListResponse:
+    records = await share_store.list_for_owner(_current_user_id(request))
+    return SharesListResponse(shares=[ShareResponse(**r) for r in records])
+
+
+@router.delete("/{share_code}", summary="Revoke a conversation share code")
+async def revoke_share(
+    share_code: str,
+    request: Request,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+) -> dict[str, bool]:
+    ok = await share_store.revoke(share_code, _current_user_id(request))
+    if not ok:
+        raise HTTPException(status_code=404, detail="Share code not found")
+    return {"success": True}
+
+
+# ---------------------------------------------------------------------------
+# Recipient side — preview / import
+# ---------------------------------------------------------------------------
+
+
+async def _resolve_active_share(share_code: str, share_store: ThreadShareStore) -> dict:
+    share = await share_store.get(share_code)
+    if share is None:
+        raise HTTPException(status_code=404, detail="Share code not found")
+    if share.get("revoked"):
+        raise HTTPException(status_code=410, detail="This share code has been revoked")
+    return share
+
+
+@router.get("/{share_code}/preview", response_model=SharePreviewResponse, summary="Preview a shared conversation")
+async def preview_share(
+    share_code: str,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+    thread_store: ThreadMetaStore = Depends(get_thread_store),
+) -> SharePreviewResponse:
+    share = await _resolve_active_share(share_code, share_store)
+    owner = share["owner_user_id"]
+    meta = await thread_store.get(share["thread_id"], user_id=owner)
+    if meta is None:
+        raise HTTPException(status_code=404, detail="The shared conversation no longer exists")
+    return SharePreviewResponse(
+        share_code=share_code,
+        shared_by=owner,
+        title=meta.get("display_name") or _UNTITLED,
+    )
+
+
+def _copy_thread_files(origin_thread_id: str, owner_user_id: str, new_thread_id: str, recipient_user_id: str) -> None:
+    """Copy a thread's user-data directory (uploads + outputs/artifacts)."""
+    paths = get_paths()
+    src_data = paths.thread_dir(origin_thread_id, user_id=owner_user_id) / "user-data"
+    if not src_data.is_dir():
+        return
+    dst_data = paths.thread_dir(new_thread_id, user_id=recipient_user_id) / "user-data"
+    shutil.copytree(src_data, dst_data, dirs_exist_ok=True)
+
+
+@router.post("/{share_code}/import", response_model=ImportResultResponse, summary="Import a shared conversation")
+async def import_share(
+    share_code: str,
+    request: Request,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+    thread_store: ThreadMetaStore = Depends(get_thread_store),
+) -> ImportResultResponse:
+    share = await _resolve_active_share(share_code, share_store)
+    if share.get("mode") == "view":
+        raise HTTPException(status_code=400, detail="This is a view-only share — open its link to read it instead of importing")
+    owner = share["owner_user_id"]
+    origin_id = share["thread_id"]
+    recipient = _current_user_id(request)
+    if owner == recipient:
+        raise HTTPException(status_code=400, detail="You cannot import your own share code")
+
+    src = await thread_store.get(origin_id, user_id=owner)
+    if src is None:
+        raise HTTPException(status_code=404, detail="The shared conversation no longer exists")
+
+    # Dedup: skip if this user already imported this conversation.
+    mine = await thread_store.search(user_id=recipient, limit=2000)
+    already = {(t.get("metadata") or {}).get("shared_origin") for t in mine}
+    if origin_id in already:
+        return ImportResultResponse(imported=0, skipped=1)
+
+    new_id = str(uuid.uuid4())
+    checkpointer = get_checkpointer(request)
+    await copy_thread_state(checkpointer, origin_id, new_id)
+
+    metadata = dict(src.get("metadata") or {})
+    metadata.update({"shared_from_code": share_code, "shared_origin": origin_id, "shared_by": owner})
+    await thread_store.create(
+        new_id,
+        assistant_id=src.get("assistant_id"),
+        user_id=recipient,
+        display_name=src.get("display_name"),
+        metadata=metadata,
+    )
+    try:
+        _copy_thread_files(origin_id, owner, new_id, recipient)
+    except Exception as exc:  # noqa: BLE001 — file copy failure must not lose the conversation
+        logger.warning("Failed to copy files for thread %s -> %s: %s", origin_id, new_id, exc)
+
+    logger.info("Share %s imported by %s as thread %s", share_code, recipient, new_id)
+    return ImportResultResponse(imported=1, skipped=0)
+
+
+# ---------------------------------------------------------------------------
+# Public read-only view — no authentication required
+# ---------------------------------------------------------------------------
+
+
+async def _load_thread_snapshot(checkpointer, thread_id: str) -> tuple[list[dict], list[str]]:
+    """Return (messages, artifacts) from a thread's latest checkpoint.
+
+    Reads straight from the checkpointer — the same source the live chat
+    streams from — so the static snapshot matches the conversation exactly.
+    """
+    config = {"configurable": {"thread_id": thread_id, "checkpoint_ns": ""}}
+    checkpoint_tuple = await checkpointer.aget_tuple(config)
+    if checkpoint_tuple is None:
+        return [], []
+    checkpoint = getattr(checkpoint_tuple, "checkpoint", {}) or {}
+    values = serialize_channel_values(checkpoint.get("channel_values", {}) or {})
+    messages = values.get("messages")
+    artifacts = values.get("artifacts")
+    return (
+        [m for m in messages if isinstance(m, dict)] if isinstance(messages, list) else [],
+        [a for a in artifacts if isinstance(a, str)] if isinstance(artifacts, list) else [],
+    )
+
+
+@public_router.get(
+    "/{share_code}",
+    response_model=PublicShareSnapshotResponse,
+    summary="Public read-only snapshot of a view-shared conversation",
+)
+async def get_public_share_snapshot(
+    share_code: str,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+    thread_store: ThreadMetaStore = Depends(get_thread_store),
+    checkpointer=Depends(get_checkpointer),
+) -> PublicShareSnapshotResponse:
+    """Serve a frozen, read-only conversation. Anyone with the link can read it.
+
+    Only ``mode="view"`` shares are exposed; missing, revoked, or import-mode
+    codes all return 404 so the endpoint never reveals which case applies.
+    """
+    share = await share_store.get(share_code)
+    if share is None or share.get("revoked") or share.get("mode") != "view":
+        raise HTTPException(status_code=404, detail="Share not found")
+
+    meta = await thread_store.get(share["thread_id"], user_id=share["owner_user_id"])
+    if meta is None:
+        raise HTTPException(status_code=404, detail="The shared conversation no longer exists")
+
+    messages, artifacts = await _load_thread_snapshot(checkpointer, share["thread_id"])
+    return PublicShareSnapshotResponse(
+        share_code=share_code,
+        title=meta.get("display_name") or _UNTITLED,
+        mode="view",
+        messages=messages,
+        artifacts=artifacts,
+        created_at=share.get("created_at"),
+    )
+
+
+@public_router.get(
+    "/{share_code}/files/{path:path}",
+    summary="Public image attachment from a view-shared conversation",
+)
+async def get_public_share_file(
+    share_code: str,
+    path: str,
+    share_store: ThreadShareStore = Depends(get_thread_share_store),
+) -> FileResponse:
+    """Serve an image referenced by a view-shared conversation.
+
+    Restricted to images only — the public share page renders inline images,
+    but the endpoint must not become a way to read arbitrary thread files.
+    Non-image paths return 404 just like a missing file.
+    """
+    share = await share_store.get(share_code)
+    if share is None or share.get("revoked") or share.get("mode") != "view":
+        raise HTTPException(status_code=404, detail="Share not found")
+
+    # Resolve the virtual path inside the *owner's* thread directory.
+    try:
+        actual = get_paths().resolve_virtual_path(share["thread_id"], path, user_id=share["owner_user_id"])
+    except ValueError as exc:
+        status = 403 if "traversal" in str(exc) else 400
+        raise HTTPException(status_code=status, detail=str(exc))
+
+    actual_path = Path(actual)
+    if not actual_path.exists() or not actual_path.is_file():
+        raise HTTPException(status_code=404, detail="File not found")
+
+    mime_type, _ = mimetypes.guess_type(actual_path.name)
+    if not mime_type or not mime_type.startswith("image/"):
+        # Only images are public; everything else is treated as not found.
+        raise HTTPException(status_code=404, detail="File not found")
+
+    # SVG can carry scripts — serve it as a download so it can never execute
+    # as a top-level document in the app origin. Raster images render inline.
+    is_svg = mime_type == "image/svg+xml"
+    return FileResponse(
+        actual_path,
+        media_type=mime_type,
+        content_disposition_type="attachment" if is_svg else "inline",
+        headers={"Cache-Control": "public, max-age=300"},
+    )

offline-backend-20260512/backend/app/gateway/thread_copy.py

@@ -0,0 +1,67 @@
+"""Copy a conversation's LangGraph checkpoint state from one thread to another.
+
+Used by the conversation-sharing feature: redeeming a share link duplicates the
+sharer's threads into the redeemer's account. Each duplicated thread needs its
+full checkpoint history copied under a fresh ``thread_id``.
+
+The copy goes through the checkpointer's public API (``alist`` / ``aput`` /
+``aput_writes``) rather than raw SQL, so it is independent of the checkpoint
+table schema and works for every backend (SQLite, Postgres, in-memory).
+"""
+
+from __future__ import annotations
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+async def copy_thread_state(checkpointer, src_thread_id: str, dst_thread_id: str) -> bool:
+    """Duplicate every checkpoint of ``src_thread_id`` under ``dst_thread_id``.
+
+    Returns True when at least one checkpoint was copied, False when the source
+    thread has no checkpoints (e.g. a thread that was never run).
+
+    The destination keeps the source's checkpoint ids — they only need to be
+    unique within a ``thread_id``, and reusing them preserves the parent chain.
+    """
+    src_config = {"configurable": {"thread_id": src_thread_id}}
+    # alist yields newest-first; reverse so parents are written before children.
+    tuples = [t async for t in checkpointer.alist(src_config)]
+    if not tuples:
+        return False
+
+    copied = 0
+    for tup in reversed(tuples):
+        configurable = (tup.config or {}).get("configurable", {})
+        checkpoint_ns = configurable.get("checkpoint_ns", "") or ""
+        parent_id = ((tup.parent_config or {}).get("configurable", {}) or {}).get("checkpoint_id")
+
+        put_config: dict = {"configurable": {"thread_id": dst_thread_id, "checkpoint_ns": checkpoint_ns}}
+        if parent_id:
+            # aput reads the parent checkpoint id from the incoming config.
+            put_config["configurable"]["checkpoint_id"] = parent_id
+
+        new_versions = tup.checkpoint.get("channel_versions", {}) or {}
+        await checkpointer.aput(put_config, tup.checkpoint, tup.metadata or {}, new_versions)
+
+        # pending_writes is a list of (task_id, channel, value); aput_writes
+        # wants them grouped per task as (channel, value) pairs.
+        if tup.pending_writes:
+            by_task: dict[str, list] = {}
+            for task_id, channel, value in tup.pending_writes:
+                by_task.setdefault(task_id, []).append((channel, value))
+            checkpoint_id = tup.checkpoint.get("id")
+            for task_id, writes in by_task.items():
+                writes_config = {
+                    "configurable": {
+                        "thread_id": dst_thread_id,
+                        "checkpoint_ns": checkpoint_ns,
+                        "checkpoint_id": checkpoint_id,
+                    }
+                }
+                await checkpointer.aput_writes(writes_config, writes, task_id)
+        copied += 1
+
+    logger.info("Copied %d checkpoint(s) from thread %s to %s", copied, src_thread_id, dst_thread_id)
+    return copied > 0

offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260518_02_thread_shares.py

@@ -0,0 +1,53 @@
+"""Create thread_shares table (per-conversation share links).
+
+Revision ID: 20260518_02
+Revises: 20260518_01
+Create Date: 2026-05-18
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+
+
+revision = "20260518_02"
+down_revision = "20260518_01"
+branch_labels = None
+depends_on = None
+
+
+def _has_table(table_name: str) -> bool:
+    inspector = inspect(op.get_bind())
+    return table_name in inspector.get_table_names()
+
+
+def _has_column(table_name: str, column_name: str) -> bool:
+    if not _has_table(table_name):
+        return False
+    inspector = inspect(op.get_bind())
+    return any(col["name"] == column_name for col in inspector.get_columns(table_name))
+
+
+def upgrade() -> None:
+    if not _has_table("thread_shares"):
+        op.create_table(
+            "thread_shares",
+            sa.Column("share_code", sa.String(32), primary_key=True),
+            sa.Column("owner_user_id", sa.String(64), nullable=False),
+            sa.Column("thread_id", sa.String(64), nullable=False),
+            sa.Column("revoked", sa.Boolean(), nullable=False, server_default=sa.false()),
+            sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        )
+        op.create_index("ix_thread_shares_owner_user_id", "thread_shares", ["owner_user_id"])
+        op.create_index("ix_thread_shares_thread_id", "thread_shares", ["thread_id"])
+    elif not _has_column("thread_shares", "thread_id"):
+        # An earlier all-conversations variant of this table — add the column.
+        op.add_column("thread_shares", sa.Column("thread_id", sa.String(64), nullable=False, server_default=""))
+        op.create_index("ix_thread_shares_thread_id", "thread_shares", ["thread_id"])
+
+
+def downgrade() -> None:
+    if _has_table("thread_shares"):
+        op.drop_table("thread_shares")

offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260518_03_thread_shares_thread_id.py

@@ -0,0 +1,57 @@
+"""Ensure thread_shares.thread_id exists (per-conversation share links).
+
+Standalone migration so databases that already applied an earlier
+all-conversations variant of ``20260518_02`` (which had no ``thread_id``
+column) get the column added. Idempotent — a no-op when the column is
+already present.
+
+Revision ID: 20260518_03
+Revises: 20260518_02
+Create Date: 2026-05-18
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+
+
+revision = "20260518_03"
+down_revision = "20260518_02"
+branch_labels = None
+depends_on = None
+
+
+def _has_table(table_name: str) -> bool:
+    inspector = inspect(op.get_bind())
+    return table_name in inspector.get_table_names()
+
+
+def _has_column(table_name: str, column_name: str) -> bool:
+    if not _has_table(table_name):
+        return False
+    inspector = inspect(op.get_bind())
+    return any(col["name"] == column_name for col in inspector.get_columns(table_name))
+
+
+def _has_index(table_name: str, index_name: str) -> bool:
+    if not _has_table(table_name):
+        return False
+    inspector = inspect(op.get_bind())
+    return any(ix["name"] == index_name for ix in inspector.get_indexes(table_name))
+
+
+def upgrade() -> None:
+    if not _has_table("thread_shares"):
+        # Fresh database — 20260518_02 already created the table with thread_id.
+        return
+    if not _has_column("thread_shares", "thread_id"):
+        op.add_column("thread_shares", sa.Column("thread_id", sa.String(64), nullable=False, server_default=""))
+    if not _has_index("thread_shares", "ix_thread_shares_thread_id"):
+        op.create_index("ix_thread_shares_thread_id", "thread_shares", ["thread_id"])
+
+
+def downgrade() -> None:
+    # Leave the column in place — dropping it would break the share feature.
+    pass

offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260518_04_scheduled_task_run_retry.py

@@ -0,0 +1,39 @@
+"""Add retry_count to scheduled_task_runs.
+
+Tracks how many recovery attempts a run has consumed so the scheduler can
+cap retries on stuck/timed-out runs.
+
+Revision ID: 20260518_04
+Revises: 20260518_03
+Create Date: 2026-05-18
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+
+
+revision = "20260518_04"
+down_revision = "20260518_03"
+branch_labels = None
+depends_on = None
+
+
+def _has_column(table_name: str, column_name: str) -> bool:
+    inspector = inspect(op.get_bind())
+    return any(column["name"] == column_name for column in inspector.get_columns(table_name))
+
+
+def upgrade() -> None:
+    if not _has_column("scheduled_task_runs", "retry_count"):
+        op.add_column(
+            "scheduled_task_runs",
+            sa.Column("retry_count", sa.Integer(), nullable=False, server_default="0"),
+        )
+
+
+def downgrade() -> None:
+    if _has_column("scheduled_task_runs", "retry_count"):
+        op.drop_column("scheduled_task_runs", "retry_count")

offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260518_05_thread_share_mode.py

@@ -0,0 +1,44 @@
+"""Add mode to thread_shares.
+
+Distinguishes "import" shares (recipient copies the conversation into their
+account) from "view" shares (a public, read-only static page).
+
+Revision ID: 20260518_05
+Revises: 20260518_04
+Create Date: 2026-05-18
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+
+
+revision = "20260518_05"
+down_revision = "20260518_04"
+branch_labels = None
+depends_on = None
+
+
+def _has_column(table_name: str, column_name: str) -> bool:
+    inspector = inspect(op.get_bind())
+    if table_name not in inspector.get_table_names():
+        return True  # table missing entirely — skip (created with the column)
+    return any(column["name"] == column_name for column in inspector.get_columns(table_name))
+
+
+def upgrade() -> None:
+    if not _has_column("thread_shares", "mode"):
+        op.add_column(
+            "thread_shares",
+            sa.Column("mode", sa.String(16), nullable=False, server_default="import"),
+        )
+
+
+def downgrade() -> None:
+    inspector = inspect(op.get_bind())
+    if "thread_shares" in inspector.get_table_names() and any(
+        column["name"] == "mode" for column in inspector.get_columns("thread_shares")
+    ):
+        op.drop_column("thread_shares", "mode")

offline-backend-20260512/backend/packages/harness/deerflow/persistence/models/__init__.py

@@ -32,6 +32,7 @@ from deerflow.persistence.scheduled_tasks.model import (
 from deerflow.persistence.skills.model import SkillRow
 from deerflow.persistence.tags.model import TagAssignmentRow, TagRow
 from deerflow.persistence.thread_meta.model import ThreadMetaRow
+from deerflow.persistence.thread_shares.model import ThreadShareRow
 from deerflow.persistence.user.model import UserRow
 
 __all__ = [
@@ -51,5 +52,6 @@ __all__ = [
     "TagAssignmentRow",
     "TagRow",
     "ThreadMetaRow",
+    "ThreadShareRow",
     "UserRow",
 ]

offline-backend-20260512/backend/packages/harness/deerflow/persistence/scheduled_tasks/base.py

@@ -36,6 +36,35 @@ class ScheduledTaskStore(ABC):
     async def due_tasks(self, now: datetime, *, limit: int = 20) -> list[dict[str, Any]]:
         raise NotImplementedError
 
+    # --- Admin (cross-user) ---
+
+    @abstractmethod
+    async def list_all_tasks(self) -> list[dict[str, Any]]:
+        """Return every task across all users. Admin-only callers."""
+        raise NotImplementedError
+
+    @abstractmethod
+    async def update_task_any(self, task_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
+        """Update a task by id without restricting by owner. Admin-only callers."""
+        raise NotImplementedError
+
+    @abstractmethod
+    async def delete_task_any(self, task_id: str) -> bool:
+        """Delete a task by id without restricting by owner. Admin-only callers."""
+        raise NotImplementedError
+
+    @abstractmethod
+    async def list_runs_any(self, task_id: str, *, limit: int = 50) -> list[dict[str, Any]]:
+        """Return runs for a task without restricting by owner. Admin-only callers."""
+        raise NotImplementedError
+
+    @abstractmethod
+    async def list_stuck_runs(self, cutoff: datetime, *, limit: int = 50) -> list[dict[str, Any]]:
+        """Return runs still in a non-terminal state whose ``started_at`` is older
+        than ``cutoff``. Used by the scheduler watchdog to recover runs that hung
+        or were orphaned by a service restart."""
+        raise NotImplementedError
+
     @abstractmethod
     async def create_run_once(self, data: dict[str, Any]) -> dict[str, Any] | None:
         raise NotImplementedError

offline-backend-20260512/backend/packages/harness/deerflow/persistence/scheduled_tasks/memory.py

@@ -59,6 +59,37 @@ class MemoryScheduledTaskStore(ScheduledTaskStore):
         due.sort(key=lambda task: task["next_run_at"])
         return due[:limit]
 
+    # --- Admin (cross-user) ---
+
+    async def list_all_tasks(self) -> list[dict[str, Any]]:
+        return [dict(task) for task in self._tasks.values()]
+
+    async def update_task_any(self, task_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
+        task = self._tasks.get(task_id)
+        if task is None:
+            return None
+        task.update(data)
+        return dict(task)
+
+    async def delete_task_any(self, task_id: str) -> bool:
+        return self._tasks.pop(task_id, None) is not None
+
+    async def list_runs_any(self, task_id: str, *, limit: int = 50) -> list[dict[str, Any]]:
+        runs = [dict(run) for run in self._runs.values() if run["task_id"] == task_id]
+        runs.sort(key=lambda run: run.get("scheduled_for"), reverse=True)
+        return runs[:limit]
+
+    async def list_stuck_runs(self, cutoff: datetime, *, limit: int = 50) -> list[dict[str, Any]]:
+        stuck = [
+            dict(run)
+            for run in self._runs.values()
+            if run.get("status") in ("running", "pending")
+            and run.get("started_at") is not None
+            and run["started_at"] <= cutoff
+        ]
+        stuck.sort(key=lambda run: run["started_at"])
+        return stuck[:limit]
+
     async def create_run_once(self, data: dict[str, Any]) -> dict[str, Any] | None:
         key = (data["task_id"], data["scheduled_for"].isoformat())
         if key in self._runs_by_key:

offline-backend-20260512/backend/packages/harness/deerflow/persistence/scheduled_tasks/model.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from datetime import UTC, datetime
 
-from sqlalchemy import JSON, Boolean, DateTime, String, Text, UniqueConstraint
+from sqlalchemy import JSON, Boolean, DateTime, Integer, String, Text, UniqueConstraint
 from sqlalchemy.orm import Mapped, mapped_column
 
 from deerflow.persistence.base import Base
@@ -72,6 +72,10 @@ class ScheduledTaskRunRow(Base):
     status: Mapped[str] = mapped_column(String(32), default="pending")
     error: Mapped[str | None] = mapped_column(Text)
     result_json: Mapped[dict | None] = mapped_column(JSON, default=dict)
+    # Number of recovery attempts made after the first try. A run is retried
+    # when it overruns the per-attempt timeout or is found orphaned in the
+    # "running" state (e.g. after a service restart). See ScheduledTaskService.
+    retry_count: Mapped[int] = mapped_column(Integer, default=0, server_default="0")
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(UTC))
     updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(UTC), onupdate=lambda: datetime.now(UTC))
 

offline-backend-20260512/backend/packages/harness/deerflow/persistence/scheduled_tasks/sql.py

@@ -124,6 +124,60 @@ class ScheduledTaskRepository(ScheduledTaskStore):
             )
             return [_to_dict(row) for row in result.scalars()]
 
+    # --- Admin (cross-user) ---
+
+    async def list_all_tasks(self) -> list[dict[str, Any]]:
+        async with self._sf() as session:
+            result = await session.execute(select(ScheduledTaskRow).order_by(ScheduledTaskRow.created_at.desc()))
+            return [_to_dict(row) for row in result.scalars()]
+
+    async def update_task_any(self, task_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
+        async with self._sf() as session:
+            row = await session.get(ScheduledTaskRow, task_id)
+            if row is None:
+                return None
+            for key, value in data.items():
+                attr = "execution_context_json" if key == "execution_context" else key
+                if hasattr(row, attr):
+                    setattr(row, attr, value)
+            row.updated_at = datetime.now(UTC)
+            await session.commit()
+            await session.refresh(row)
+            return _to_dict(row)
+
+    async def delete_task_any(self, task_id: str) -> bool:
+        async with self._sf() as session:
+            row = await session.get(ScheduledTaskRow, task_id)
+            if row is None:
+                return False
+            await session.delete(row)
+            await session.commit()
+            return True
+
+    async def list_runs_any(self, task_id: str, *, limit: int = 50) -> list[dict[str, Any]]:
+        async with self._sf() as session:
+            result = await session.execute(
+                select(ScheduledTaskRunRow)
+                .where(ScheduledTaskRunRow.task_id == task_id)
+                .order_by(ScheduledTaskRunRow.scheduled_for.desc())
+                .limit(limit)
+            )
+            return [_to_dict(row) for row in result.scalars()]
+
+    async def list_stuck_runs(self, cutoff: datetime, *, limit: int = 50) -> list[dict[str, Any]]:
+        async with self._sf() as session:
+            result = await session.execute(
+                select(ScheduledTaskRunRow)
+                .where(
+                    ScheduledTaskRunRow.status.in_(("running", "pending")),
+                    ScheduledTaskRunRow.started_at.is_not(None),
+                    ScheduledTaskRunRow.started_at <= cutoff,
+                )
+                .order_by(ScheduledTaskRunRow.started_at.asc())
+                .limit(limit)
+            )
+            return [_to_dict(row) for row in result.scalars()]
+
     async def create_run_once(self, data: dict[str, Any]) -> dict[str, Any] | None:
         row = ScheduledTaskRunRow(
             id=data["id"],

offline-backend-20260512/backend/packages/harness/deerflow/persistence/thread_shares/__init__.py

@@ -0,0 +1,19 @@
+"""Persistence layer for conversation-history share links."""
+
+from deerflow.persistence.thread_shares.base import ThreadShareStore, generate_share_code
+from deerflow.persistence.thread_shares.memory import MemoryThreadShareStore
+from deerflow.persistence.thread_shares.sql import ThreadShareRepository
+
+__all__ = [
+    "ThreadShareStore",
+    "MemoryThreadShareStore",
+    "ThreadShareRepository",
+    "generate_share_code",
+    "make_thread_share_store",
+]
+
+
+def make_thread_share_store(session_factory):
+    if session_factory is None:
+        return MemoryThreadShareStore()
+    return ThreadShareRepository(session_factory)

offline-backend-20260512/backend/packages/harness/deerflow/persistence/thread_shares/base.py

@@ -0,0 +1,50 @@
+"""Abstract persistence API for per-conversation share links."""
+
+from __future__ import annotations
+
+import secrets
+from abc import ABC, abstractmethod
+from typing import Any
+
+# Unambiguous alphabet — no 0/O/1/I/L so codes are easy to read and type.
+_CODE_ALPHABET = "ABCDEFGHJKMNPQRSTUVWXYZ23456789"
+
+
+def generate_share_code(length: int = 8) -> str:
+    """Return a random, unguessable, human-readable share code."""
+    return "".join(secrets.choice(_CODE_ALPHABET) for _ in range(length))
+
+
+class ThreadShareStore(ABC):
+    @abstractmethod
+    async def create(self, owner_user_id: str, thread_id: str, *, mode: str = "import") -> dict[str, Any]:
+        """Create a new share link for one conversation and return its record.
+
+        ``mode`` is ``"import"`` (recipient copies the conversation) or
+        ``"view"`` (a public read-only static page).
+        """
+        raise NotImplementedError
+
+    @abstractmethod
+    async def get(self, share_code: str) -> dict[str, Any] | None:
+        """Look up a share by code regardless of owner (None if missing)."""
+        raise NotImplementedError
+
+    @abstractmethod
+    async def get_active_for_thread(self, owner_user_id: str, thread_id: str, *, mode: str = "import") -> dict[str, Any] | None:
+        """Return the owner's non-revoked share of ``mode`` for ``thread_id``, if any.
+
+        Used so re-sharing the same conversation in the same mode reuses its
+        existing code instead of minting a new one each time.
+        """
+        raise NotImplementedError
+
+    @abstractmethod
+    async def list_for_owner(self, owner_user_id: str) -> list[dict[str, Any]]:
+        """List all share links created by ``owner_user_id`` (newest first)."""
+        raise NotImplementedError
+
+    @abstractmethod
+    async def revoke(self, share_code: str, owner_user_id: str) -> bool:
+        """Revoke a share link. Returns False if missing or not owned."""
+        raise NotImplementedError

offline-backend-20260512/backend/packages/harness/deerflow/persistence/thread_shares/memory.py

@@ -0,0 +1,59 @@
+"""In-memory ``ThreadShareStore`` implementation for tests / memory backend."""
+
+from __future__ import annotations
+
+import copy
+from datetime import UTC, datetime
+from typing import Any
+
+from deerflow.persistence.thread_shares.base import ThreadShareStore, generate_share_code
+
+
+class MemoryThreadShareStore(ThreadShareStore):
+    def __init__(self) -> None:
+        self._shares: dict[str, dict[str, Any]] = {}
+
+    async def create(self, owner_user_id: str, thread_id: str, *, mode: str = "import") -> dict[str, Any]:
+        code = generate_share_code()
+        while code in self._shares:
+            code = generate_share_code()
+        record = {
+            "share_code": code,
+            "owner_user_id": owner_user_id,
+            "thread_id": thread_id,
+            "revoked": False,
+            "mode": mode,
+            "created_at": datetime.now(UTC).isoformat(),
+        }
+        self._shares[code] = record
+        return copy.deepcopy(record)
+
+    async def get(self, share_code: str) -> dict[str, Any] | None:
+        record = self._shares.get(share_code)
+        return copy.deepcopy(record) if record is not None else None
+
+    async def get_active_for_thread(self, owner_user_id: str, thread_id: str, *, mode: str = "import") -> dict[str, Any] | None:
+        matches = [
+            r
+            for r in self._shares.values()
+            if r["owner_user_id"] == owner_user_id
+            and r["thread_id"] == thread_id
+            and r.get("mode", "import") == mode
+            and not r["revoked"]
+        ]
+        if not matches:
+            return None
+        matches.sort(key=lambda r: r["created_at"], reverse=True)
+        return copy.deepcopy(matches[0])
+
+    async def list_for_owner(self, owner_user_id: str) -> list[dict[str, Any]]:
+        rows = [r for r in self._shares.values() if r["owner_user_id"] == owner_user_id]
+        rows.sort(key=lambda r: r["created_at"], reverse=True)
+        return [copy.deepcopy(r) for r in rows]
+
+    async def revoke(self, share_code: str, owner_user_id: str) -> bool:
+        record = self._shares.get(share_code)
+        if record is None or record["owner_user_id"] != owner_user_id:
+            return False
+        record["revoked"] = True
+        return True

offline-backend-20260512/backend/packages/harness/deerflow/persistence/thread_shares/model.py

@@ -0,0 +1,36 @@
+"""ORM model for conversation share links.
+
+A share link is a short, revocable code created by a user for *one* of their
+conversations. Redeeming it copies that single conversation into the redeemer's
+account. The table only stores the link itself — the conversation is copied
+lazily at import time.
+"""
+
+from __future__ import annotations
+
+from datetime import UTC, datetime
+
+from sqlalchemy import Boolean, DateTime, String
+from sqlalchemy.orm import Mapped, mapped_column
+
+from deerflow.persistence.base import Base
+
+
+class ThreadShareRow(Base):
+    __tablename__ = "thread_shares"
+
+    # Short, URL-safe, unguessable code embedded in the share link.
+    share_code: Mapped[str] = mapped_column(String(32), primary_key=True)
+    # The user who created the share.
+    owner_user_id: Mapped[str] = mapped_column(String(64), nullable=False, index=True)
+    # The single conversation (thread) this link shares.
+    thread_id: Mapped[str] = mapped_column(String(64), nullable=False, index=True)
+    # Soft-disable: a revoked link can no longer be previewed or imported.
+    revoked: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
+    # Share mode:
+    #   "import" — recipient (a logged-in user) copies the conversation into
+    #              their own account and can keep chatting in the copy.
+    #   "view"   — a public, read-only static page anyone can open without
+    #              logging in; viewers cannot send new messages.
+    mode: Mapped[str] = mapped_column(String(16), nullable=False, default="import", server_default="import")
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, default=lambda: datetime.now(UTC))

offline-backend-20260512/backend/packages/harness/deerflow/persistence/thread_shares/sql.py

@@ -0,0 +1,80 @@
+"""SQLAlchemy-backed per-conversation share-link repository."""
+
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Any
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker
+
+from deerflow.persistence.thread_shares.base import ThreadShareStore, generate_share_code
+from deerflow.persistence.thread_shares.model import ThreadShareRow
+
+
+def _row_to_dict(row: ThreadShareRow) -> dict[str, Any]:
+    data = row.to_dict()
+    created = data.get("created_at")
+    if isinstance(created, datetime):
+        data["created_at"] = created.isoformat()
+    return data
+
+
+class ThreadShareRepository(ThreadShareStore):
+    def __init__(self, session_factory: async_sessionmaker[AsyncSession]) -> None:
+        self._sf = session_factory
+
+    async def create(self, owner_user_id: str, thread_id: str, *, mode: str = "import") -> dict[str, Any]:
+        # Retry on the (astronomically unlikely) code collision.
+        async with self._sf() as session:
+            for _ in range(8):
+                code = generate_share_code()
+                if await session.get(ThreadShareRow, code) is not None:
+                    continue
+                row = ThreadShareRow(
+                    share_code=code,
+                    owner_user_id=owner_user_id,
+                    thread_id=thread_id,
+                    revoked=False,
+                    mode=mode,
+                )
+                session.add(row)
+                await session.commit()
+                await session.refresh(row)
+                return _row_to_dict(row)
+        raise RuntimeError("Failed to allocate a unique share code")
+
+    async def get(self, share_code: str) -> dict[str, Any] | None:
+        async with self._sf() as session:
+            row = await session.get(ThreadShareRow, share_code)
+            return _row_to_dict(row) if row is not None else None
+
+    async def get_active_for_thread(self, owner_user_id: str, thread_id: str, *, mode: str = "import") -> dict[str, Any] | None:
+        stmt = (
+            select(ThreadShareRow)
+            .where(
+                ThreadShareRow.owner_user_id == owner_user_id,
+                ThreadShareRow.thread_id == thread_id,
+                ThreadShareRow.mode == mode,
+                ThreadShareRow.revoked.is_(False),
+            )
+            .order_by(ThreadShareRow.created_at.desc())
+        )
+        async with self._sf() as session:
+            row = (await session.execute(stmt)).scalars().first()
+            return _row_to_dict(row) if row is not None else None
+
+    async def list_for_owner(self, owner_user_id: str) -> list[dict[str, Any]]:
+        stmt = select(ThreadShareRow).where(ThreadShareRow.owner_user_id == owner_user_id).order_by(ThreadShareRow.created_at.desc())
+        async with self._sf() as session:
+            result = await session.execute(stmt)
+            return [_row_to_dict(row) for row in result.scalars()]
+
+    async def revoke(self, share_code: str, owner_user_id: str) -> bool:
+        async with self._sf() as session:
+            row = await session.get(ThreadShareRow, share_code)
+            if row is None or row.owner_user_id != owner_user_id:
+                return False
+            row.revoked = True
+            await session.commit()
+            return True

offline-backend-20260512/backend/packages/harness/deerflow/runtime/scheduler/service.py

@@ -9,7 +9,7 @@ import re
 import shutil
 import uuid
 from dataclasses import dataclass
-from datetime import UTC, datetime
+from datetime import UTC, datetime, timedelta
 from pathlib import Path
 from types import SimpleNamespace
 from typing import Any
@@ -27,6 +27,14 @@ from deerflow.utils.time import now_iso
 
 logger = logging.getLogger(__name__)
 
+# A single execution attempt may not exceed this wall-clock budget. When it
+# does, the run is treated as stuck (the agent loop hung, a tool blocked, etc.)
+# and retried. The watchdog uses the same window to recover runs orphaned by a
+# crash or restart — those stay "running" in the DB with no in-process owner.
+_RUN_ATTEMPT_TIMEOUT_SECONDS = 30 * 60  # 30 minutes
+# Retries allowed after the first attempt before the run is marked "failed".
+_MAX_RUN_RETRIES = 3
+
 
 @dataclass
 class _RuntimeUser:
@@ -398,7 +406,13 @@ class ScheduledTaskService:
         )
         return task
 
-    async def update_task(self, user_id: str, task_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
+    @staticmethod
+    def _build_task_update(data: dict[str, Any], existing: dict[str, Any] | None) -> dict[str, Any]:
+        """Translate an API update payload into a storage update dict.
+
+        Shared by owner-scoped :meth:`update_task` and admin :meth:`admin_update_task`
+        so both apply identical schedule/timezone normalization.
+        """
         update_data: dict[str, Any] = {}
         for key in ("name", "prompt", "enabled", "execution_agent_name"):
             if key in data and data[key] is not None:
@@ -409,20 +423,74 @@ class ScheduledTaskService:
         if data.get("schedule") is not None:
             schedule = str(data["schedule"])
             cron_expr = _schedule_to_cron(schedule)
-            tz = update_data.get("timezone")
-            if tz is None:
-                existing = await self.store.get_task(task_id, user_id)
-                tz = (existing or {}).get("timezone", "UTC")
+            tz = update_data.get("timezone") or (existing or {}).get("timezone") or "UTC"
             update_data["schedule_text"] = schedule
             update_data["cron_expr"] = cron_expr
             update_data["next_run_at"] = _next_run_at(cron_expr, tz)
         if data.get("execution_context") is not None:
             update_data["execution_context"] = data["execution_context"]
+        # Re-enabling a task must also schedule it forward from now, otherwise a
+        # paused task with a stale/empty next_run_at would never fire again.
+        if update_data.get("enabled") is True and "next_run_at" not in update_data:
+            cron = (existing or {}).get("cron_expr")
+            if cron:
+                tz = update_data.get("timezone") or (existing or {}).get("timezone") or "UTC"
+                update_data["next_run_at"] = _next_run_at(cron, tz)
+        return update_data
+
+    async def update_task(self, user_id: str, task_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
+        existing = await self.store.get_task(task_id, user_id)
+        if existing is None:
+            return None
+        update_data = self._build_task_update(data, existing)
         return await self.store.update_task(task_id, user_id, update_data)
 
     async def delete_task(self, user_id: str, task_id: str) -> bool:
         return await self.store.delete_task(task_id, user_id)
 
+    # --- Admin (cross-user management) ---
+
+    async def admin_list_tasks(self) -> list[dict[str, Any]]:
+        """List every scheduled task across all users. Admin-only callers."""
+        tasks = await self.store.list_all_tasks()
+        for task in tasks:
+            task["role"] = "owner"
+        return tasks
+
+    async def admin_update_task(self, task_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
+        """Update any task regardless of owner. Admin-only callers."""
+        existing = await self.store.get_task_any(task_id)
+        if existing is None:
+            return None
+        update_data = self._build_task_update(data, existing)
+        return await self.store.update_task_any(task_id, update_data)
+
+    async def admin_delete_task(self, task_id: str) -> bool:
+        """Delete any task regardless of owner. Admin-only callers."""
+        return await self.store.delete_task_any(task_id)
+
+    async def admin_list_runs(self, task_id: str, *, limit: int = 50) -> list[dict[str, Any]]:
+        """List runs for any task regardless of owner. Admin-only callers."""
+        runs = await self.store.list_runs_any(task_id, limit=limit)
+        for run in runs:
+            run["can_edit"] = True
+        return runs
+
+    async def admin_get_run(self, run_id: str) -> dict[str, Any] | None:
+        """Fetch a single run regardless of owner. Admin-only callers."""
+        run = await self.store.get_run_any(run_id)
+        if run is not None:
+            run["can_edit"] = True
+        return run
+
+    async def admin_trigger_task(self, task_id: str) -> dict[str, Any] | None:
+        """Trigger an immediate run of any task regardless of owner."""
+        task = await self.store.get_task_any(task_id)
+        if task is None:
+            return None
+        asyncio.create_task(self._execute_tracked(task, scheduled_for=datetime.now(UTC), manual=True))
+        return task
+
     async def pause_task(self, user_id: str, task_id: str) -> dict[str, Any] | None:
         return await self.store.update_task(task_id, user_id, {"enabled": False})
 
@@ -437,11 +505,19 @@ class ScheduledTaskService:
         task = await self.store.get_task(task_id, user_id)
         if task is None:
             return None
-        asyncio.create_task(self._execute_task(task, scheduled_for=datetime.now(UTC), manual=True))
+        asyncio.create_task(self._execute_tracked(task, scheduled_for=datetime.now(UTC), manual=True))
         return task
 
     async def _run_loop(self) -> None:
         while not self._stopping.is_set():
+            # Recover hung / orphaned runs first so a single stuck task cannot
+            # silently wedge the scheduler indefinitely.
+            try:
+                await self._reconcile_stuck_runs()
+            except asyncio.CancelledError:
+                raise
+            except Exception:
+                logger.exception("Scheduled task watchdog scan failed")
             try:
                 due = await self.store.due_tasks(datetime.now(UTC), limit=20)
                 for task in due:
@@ -466,64 +542,195 @@ class ScheduledTaskService:
         finally:
             self._running_task_ids.discard(task["task_id"])
 
-    async def _execute_task(self, task: dict[str, Any], *, scheduled_for: datetime, manual: bool) -> None:
+    async def _execute_tracked(self, task: dict[str, Any], *, scheduled_for: datetime, manual: bool) -> None:
+        """Run a task while marking it busy so the watchdog won't double-drive it."""
+        self._running_task_ids.add(task["task_id"])
+        try:
+            await self._execute_task(task, scheduled_for=scheduled_for, manual=manual)
+        finally:
+            self._running_task_ids.discard(task["task_id"])
+
+    async def _reconcile_stuck_runs(self) -> None:
+        """Recover runs left in the ``running`` state with no in-process owner.
+
+        A run becomes stuck when the agent loop hangs past the per-attempt
+        timeout, or when the process crashes / restarts mid-run (the original
+        asyncio task is gone but the DB row still says ``running``). For each
+        such run we retry up to ``_MAX_RUN_RETRIES`` times, then mark it
+        ``failed`` so it no longer shows as perpetually executing.
+        """
+        cutoff = datetime.now(UTC) - timedelta(seconds=_RUN_ATTEMPT_TIMEOUT_SECONDS)
+        stuck = await self.store.list_stuck_runs(cutoff, limit=20)
+        for run in stuck:
+            task_id = run["task_id"]
+            # A run still owned by a live in-process execution is handled by
+            # that execution's own timeout/retry loop — don't touch it here.
+            if task_id in self._running_task_ids:
+                continue
+            self._running_task_ids.add(task_id)
+            asyncio.create_task(self._recover_and_untrack(run))
+
+    async def _recover_and_untrack(self, run: dict[str, Any]) -> None:
+        try:
+            await self._recover_stuck_run(run)
+        except Exception:
+            logger.exception("Failed to recover stuck scheduled task run %s", run.get("id"))
+        finally:
+            self._running_task_ids.discard(run["task_id"])
+
+    async def _recover_stuck_run(self, run: dict[str, Any]) -> None:
+        run_id = run["id"]
+        retry_count = int(run.get("retry_count") or 0)
+        task = await self.store.get_task_any(run["task_id"])
+        scheduled_for = _coerce_datetime(run.get("scheduled_for")) or datetime.now(UTC)
+        if task is None:
+            # Parent task was deleted — just close out the orphaned run.
+            await self.store.update_run(
+                run_id,
+                {"status": "failed", "finished_at": datetime.now(UTC), "error": "执行超时：所属任务已被删除"},
+            )
+            return
+        if retry_count >= _MAX_RUN_RETRIES:
+            await self._fail_run(
+                task,
+                run_id,
+                scheduled_for,
+                error=f"执行超时：超过 {_RUN_ATTEMPT_TIMEOUT_SECONDS // 60} 分钟未完成，重试 {_MAX_RUN_RETRIES} 次后仍失败",
+                retry_count=retry_count,
+            )
+            return
+        logger.warning("Recovering stuck scheduled task run %s (retry budget %s/%s)", run_id, retry_count, _MAX_RUN_RETRIES)
+        await self._execute_task(task, scheduled_for=scheduled_for, manual=False, run_row=run)
+
+    async def _fail_run(
+        self,
+        task: dict[str, Any],
+        run_id: str,
+        scheduled_for: datetime,
+        *,
+        error: str,
+        retry_count: int = 0,
+    ) -> None:
+        """Mark a run failed and reflect the outcome on the parent task."""
+        result = _build_result(task, scheduled_for=scheduled_for, content=f"Scheduled task failed: {error}")
+        await self.store.update_run(
+            run_id,
+            {"status": "failed", "finished_at": datetime.now(UTC), "error": error, "result": result, "retry_count": retry_count},
+        )
+        await self.store.update_task(task["task_id"], task["user_id"], {"last_run_at": datetime.now(UTC), "last_status": "failed"})
+
+    async def _execute_task(
+        self,
+        task: dict[str, Any],
+        *,
+        scheduled_for: datetime,
+        manual: bool,
+        run_row: dict[str, Any] | None = None,
+    ) -> None:
         # Each run uses its own throwaway thread so message history cannot accumulate
         # across runs and blow past the model's input window. The per-user
         # task["scheduler_thread_id"] is no longer used to drive the LLM call —
         # we keep it on the task row only for backwards compatibility.
-        runtime_thread_id = str(uuid.uuid4())
-        run_row = await self.store.create_run_once(
-            {
-                "id": str(uuid.uuid4()),
-                "task_id": task["task_id"],
-                "user_id": task["user_id"],
-                "scheduler_thread_id": runtime_thread_id,
-                "scheduled_for": scheduled_for,
-                "status": "running",
-                "started_at": datetime.now(UTC),
-            }
-        )
+        is_recovery = run_row is not None
         if run_row is None:
-            return
+            run_row = await self.store.create_run_once(
+                {
+                    "id": str(uuid.uuid4()),
+                    "task_id": task["task_id"],
+                    "user_id": task["user_id"],
+                    "scheduler_thread_id": str(uuid.uuid4()),
+                    "scheduled_for": scheduled_for,
+                    "status": "running",
+                    "started_at": datetime.now(UTC),
+                }
+            )
+            if run_row is None:
+                return
+        else:
+            # Recovery path: re-claim an existing (orphaned) run row.
+            await self.store.update_run(run_row["id"], {"status": "running", "started_at": datetime.now(UTC)})
 
-        if not manual:
+        # Advancing the schedule only happens once, when the run is first
+        # created — recovery retries reuse the original scheduled_for.
+        if not manual and not is_recovery:
             next_run_at = _next_run_at(task["cron_expr"], task.get("timezone") or "UTC", base=scheduled_for)
             await self.store.update_task(task["task_id"], task["user_id"], {"next_run_at": next_run_at, "last_status": "running"})
 
-        try:
-            await self._ensure_thread_meta(task["user_id"], runtime_thread_id)
-            async with self._agent_run_lock:
-                output_snapshot = self._snapshot_result_files(runtime_thread_id, task["user_id"])
-                record = await self._start_agent_run(task, scheduled_for=scheduled_for, runtime_thread_id=runtime_thread_id)
-                await self.store.update_run(run_row["id"], {"agent_run_id": record.run_id})
-                if record.task is not None:
-                    await record.task
-                result_text = await self._extract_latest_ai_text(runtime_thread_id)
-                result_files = await self._extract_result_files(
-                    runtime_thread_id,
-                    task["user_id"],
-                    run_id=run_row["id"],
-                    output_snapshot=output_snapshot,
+        run_id = run_row["id"]
+        retry_count = int(run_row.get("retry_count") or 0)
+
+        while True:
+            runtime_thread_id = str(uuid.uuid4())
+            try:
+                result = await asyncio.wait_for(
+                    self._run_agent_attempt(task, runtime_thread_id=runtime_thread_id, scheduled_for=scheduled_for, run_id=run_id),
+                    timeout=_RUN_ATTEMPT_TIMEOUT_SECONDS,
                 )
-            result = _build_result(task, scheduled_for=scheduled_for, content=result_text, files=result_files)
+            except TimeoutError:
+                # The attempt overran the 30-minute cap. Retry a bounded number
+                # of times, then give up and mark the run failed.
+                if retry_count >= _MAX_RUN_RETRIES:
+                    await self._fail_run(
+                        task,
+                        run_id,
+                        scheduled_for,
+                        error=f"执行超时：单次执行超过 {_RUN_ATTEMPT_TIMEOUT_SECONDS // 60} 分钟，重试 {_MAX_RUN_RETRIES} 次后仍失败",
+                        retry_count=retry_count,
+                    )
+                    return
+                retry_count += 1
+                logger.warning("Scheduled task %s timed out; retry %s/%s", task["task_id"], retry_count, _MAX_RUN_RETRIES)
+                await self.store.update_run(
+                    run_id,
+                    {
+                        "retry_count": retry_count,
+                        "status": "running",
+                        "started_at": datetime.now(UTC),
+                        "error": f"执行超时，正在重试（第 {retry_count}/{_MAX_RUN_RETRIES} 次）",
+                    },
+                )
+                continue
+            except Exception as exc:
+                logger.exception("Scheduled task %s failed", task["task_id"])
+                await self._fail_run(task, run_id, scheduled_for, error=str(exc), retry_count=retry_count)
+                return
+
             await self.store.update_run(
-                run_row["id"],
-                {"status": "succeeded", "finished_at": datetime.now(UTC), "result": result},
+                run_id,
+                {"status": "succeeded", "finished_at": datetime.now(UTC), "result": result, "retry_count": retry_count, "error": None},
             )
             await self.store.update_task(task["task_id"], task["user_id"], {"last_run_at": datetime.now(UTC), "last_status": "succeeded"})
             await self._deliver_element_result(task, result["content"])
-        except Exception as exc:
-            logger.exception("Scheduled task %s failed", task["task_id"])
-            result = _build_result(
-                task,
-                scheduled_for=scheduled_for,
-                content=f"Scheduled task failed: {exc}",
+            return
+
+    async def _run_agent_attempt(
+        self,
+        task: dict[str, Any],
+        *,
+        runtime_thread_id: str,
+        scheduled_for: datetime,
+        run_id: str,
+    ) -> dict[str, Any]:
+        """Run the agent once and build the result payload.
+
+        Wrapped in :func:`asyncio.wait_for` by the caller so a hung agent loop
+        cannot hold the shared run lock — and the whole scheduler — forever.
+        """
+        await self._ensure_thread_meta(task["user_id"], runtime_thread_id)
+        async with self._agent_run_lock:
+            output_snapshot = self._snapshot_result_files(runtime_thread_id, task["user_id"])
+            record = await self._start_agent_run(task, scheduled_for=scheduled_for, runtime_thread_id=runtime_thread_id)
+            await self.store.update_run(run_id, {"agent_run_id": record.run_id})
+            if record.task is not None:
+                await record.task
+            result_text = await self._extract_latest_ai_text(runtime_thread_id)
+            result_files = await self._extract_result_files(
+                runtime_thread_id,
+                task["user_id"],
+                run_id=run_id,
+                output_snapshot=output_snapshot,
             )
-            await self.store.update_run(
-                run_row["id"],
-                {"status": "failed", "finished_at": datetime.now(UTC), "error": str(exc), "result": result},
-            )
-            await self.store.update_task(task["task_id"], task["user_id"], {"last_run_at": datetime.now(UTC), "last_status": "failed"})
+        return _build_result(task, scheduled_for=scheduled_for, content=result_text, files=result_files)
 
     async def _ensure_thread_meta(self, user_id: str, thread_id: str) -> None:
         token = set_current_user(_RuntimeUser(id=user_id))

offline-backend-20260512/backend/tests/test_skill_detail.py

@@ -17,6 +17,7 @@ import pytest
 from app.gateway.routers.skills import (
     SkillDetailRequest,
     SkillResponse,
+    _can_view_skill_source,
     _skill_to_response,
 )
 from deerflow.config import paths as paths_module
@@ -160,3 +161,29 @@ def test_skill_to_response_detail_none_without_ownership(isolated_paths) -> None
     resp = _skill_to_response(skill, None)
     assert resp.detail is None
     assert resp.builtin is True
+
+
+# ---------------------------------------------------------------------------
+# SKILL.md source visibility — admin / publisher only
+# ---------------------------------------------------------------------------
+
+
+def test_admin_can_view_any_skill_source() -> None:
+    # Admin sees a built-in skill's source (no owner).
+    assert _can_view_skill_source(SkillCategory.PUBLIC, None, "user-a", is_admin=True) is True
+    # ...and another user's custom skill.
+    assert _can_view_skill_source(SkillCategory.CUSTOM, "user-b", "user-a", is_admin=True) is True
+
+
+def test_publisher_can_view_own_custom_skill_source() -> None:
+    assert _can_view_skill_source(SkillCategory.CUSTOM, "user-a", "user-a", is_admin=False) is True
+
+
+def test_non_owner_cannot_view_custom_skill_source() -> None:
+    # A different user — even if the skill is published to them — cannot read source.
+    assert _can_view_skill_source(SkillCategory.CUSTOM, "user-b", "user-a", is_admin=False) is False
+
+
+def test_non_admin_cannot_view_builtin_skill_source() -> None:
+    # Built-in / public skills have no publisher, so non-admins never see source.
+    assert _can_view_skill_source(SkillCategory.PUBLIC, None, "user-a", is_admin=False) is False