From 1cd99a5a9027e604c0156a3b3062fc8b5a0836d2 Mon Sep 17 00:00:00 2001
From: fengxiangdebaozi <10845145+fengxiangdebaozi@user.noreply.gitee.com>
Date: Tue, 21 Jul 2026 20:16:52 +0800
Subject: [PATCH] feat(position-roundtable): add delivery rejection workflow

---
 .../src/position-roundtable/api/sessions.ts   |  57 ++
 .../components/PositionNodeChat.tsx           |   7 +-
 .../pages/PositionRoundtablePage.tsx          | 828 +++++++++++++++---
 .../gateway/routers/position_roundtable.py    | 280 +++++-
 ...60721_02_position_roundtable_rejections.py |  54 ++
 ...3_position_roundtable_builtin_snapshots.py |  49 ++
 .../persistence/position_roundtable/model.py  |   7 +-
 .../persistence/position_roundtable/sql.py    | 105 +++
 .../test_position_roundtable_sessions.py      | 183 ++++
 9 files changed, 1422 insertions(+), 148 deletions(-)
 create mode 100644 offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_02_position_roundtable_rejections.py
 create mode 100644 offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_03_position_roundtable_builtin_snapshots.py

diff --git a/frontend-web/src/position-roundtable/api/sessions.ts b/frontend-web/src/position-roundtable/api/sessions.ts
index fbb10e10..4980d46d 100644
--- a/frontend-web/src/position-roundtable/api/sessions.ts
+++ b/frontend-web/src/position-roundtable/api/sessions.ts
@@ -30,6 +30,9 @@ export interface PositionRoundtableNode {
   artifactManifest: Array<Record<string, unknown>>;
   revision: number;
   upstreamRevision: Record<string, unknown> | null;
+  rejectionCount: number;
+  lastRejection: Record<string, unknown> | null;
+  invalidatedBy: string | null;
   createdAt?: string;
   updatedAt?: string;
 }
@@ -42,6 +45,8 @@ export interface PositionRoundtableSession {
   chainSnapshot: Record<string, unknown> | null;
   intentThreadId: string | null;
   intentSnapshot: Record<string, unknown> | null;
+  summarySnapshot: Record<string, unknown> | null;
+  actionPlanSnapshot: Record<string, unknown> | null;
   status: "intent_pending" | "active" | "completed" | "archived";
   createdAt?: string;
   updatedAt?: string;
@@ -62,6 +67,9 @@ interface ServerNode {
   artifact_manifest?: Array<Record<string, unknown>>;
   revision?: number;
   upstream_revision?: Record<string, unknown> | null;
+  rejection_count?: number;
+  last_rejection?: Record<string, unknown> | null;
+  invalidated_by?: string | null;
   created_at?: string;
   updated_at?: string;
 }
@@ -74,6 +82,8 @@ interface ServerSession {
   chain_snapshot?: Record<string, unknown> | null;
   intent_thread_id: string | null;
   intent_snapshot?: Record<string, unknown> | null;
+  summary_snapshot?: Record<string, unknown> | null;
+  action_plan_snapshot?: Record<string, unknown> | null;
   status: PositionRoundtableSession["status"];
   created_at?: string;
   updated_at?: string;
@@ -105,6 +115,9 @@ function toNode(node: ServerNode): PositionRoundtableNode {
     artifactManifest: node.artifact_manifest ?? [],
     revision: node.revision ?? 0,
     upstreamRevision: node.upstream_revision ?? null,
+    rejectionCount: node.rejection_count ?? 0,
+    lastRejection: node.last_rejection ?? null,
+    invalidatedBy: node.invalidated_by ?? null,
     createdAt: node.created_at,
     updatedAt: node.updated_at,
   };
@@ -119,6 +132,8 @@ function toSession(session: ServerSession): PositionRoundtableSession {
     chainSnapshot: session.chain_snapshot ?? null,
     intentThreadId: session.intent_thread_id,
     intentSnapshot: session.intent_snapshot ?? null,
+    summarySnapshot: session.summary_snapshot ?? null,
+    actionPlanSnapshot: session.action_plan_snapshot ?? null,
     status: session.status,
     createdAt: session.created_at,
     updatedAt: session.updated_at,
@@ -263,3 +278,45 @@ export async function completePositionNodeTurn(
   );
   return toNode(result);
 }
+
+export async function rejectPositionNode(
+  sessionId: string,
+  nodeKey: string,
+  input: { title: string; reason: string },
+): Promise<PositionRoundtableSession> {
+  const result = await readJson<ServerSession>(
+    await apiFetch(
+      `${BASE()}/sessions/${encodeURIComponent(sessionId)}/nodes/${encodeURIComponent(nodeKey)}/reject`,
+      {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({
+          title: input.title,
+          reason: input.reason,
+        }),
+      },
+    ),
+    "reject position node",
+  );
+  return toSession(result);
+}
+
+export async function generatePositionSummary(sessionId: string): Promise<PositionRoundtableSession> {
+  const result = await readJson<ServerSession>(
+    await apiFetch(`${BASE()}/sessions/${encodeURIComponent(sessionId)}/summary/start`, {
+      method: "POST",
+    }),
+    "generate position summary",
+  );
+  return toSession(result);
+}
+
+export async function generatePositionActionPlan(sessionId: string): Promise<PositionRoundtableSession> {
+  const result = await readJson<ServerSession>(
+    await apiFetch(`${BASE()}/sessions/${encodeURIComponent(sessionId)}/action-plan/start`, {
+      method: "POST",
+    }),
+    "generate position action plan",
+  );
+  return toSession(result);
+}
diff --git a/frontend-web/src/position-roundtable/components/PositionNodeChat.tsx b/frontend-web/src/position-roundtable/components/PositionNodeChat.tsx
index 306dd84a..f329916c 100644
--- a/frontend-web/src/position-roundtable/components/PositionNodeChat.tsx
+++ b/frontend-web/src/position-roundtable/components/PositionNodeChat.tsx
@@ -78,7 +78,8 @@ export function PositionNodeChat({
     sessionStatus !== "archived" &&
     node.positionId === currentPositionId &&
     node.status !== "locked" &&
-    node.status !== "error";
+    node.status !== "error" &&
+    !node.invalidatedBy;
 
   useEffect(() => {
     setBoundThreadId(node.threadId);
@@ -152,6 +153,8 @@ export function PositionNodeChat({
         toast.info(
           sessionStatus === "archived"
             ? "该会话已归档，仅可查看历史记录"
+            : node.invalidatedBy
+              ? "上游产物已被驳回或重做，当前节点需等待前序节点重新完成"
             : node.status === "locked"
               ? "该节点尚未解锁"
               : "当前岗位只能查看该节点对话",
@@ -181,6 +184,8 @@ export function PositionNodeChat({
   const readOnlyHint =
     sessionStatus === "archived"
       ? "该会话已归档，仅可查看历史对话和产物"
+      : node.invalidatedBy
+      ? "上游产物已变更，需等待前序节点重新完成后再重做"
       : node.status === "locked"
       ? "等待上游岗位完成后解锁"
       : node.positionId !== currentPositionId
diff --git a/frontend-web/src/position-roundtable/pages/PositionRoundtablePage.tsx b/frontend-web/src/position-roundtable/pages/PositionRoundtablePage.tsx
index 468b24ea..3b2036f3 100644
--- a/frontend-web/src/position-roundtable/pages/PositionRoundtablePage.tsx
+++ b/frontend-web/src/position-roundtable/pages/PositionRoundtablePage.tsx
@@ -12,13 +12,14 @@ import {
   Circle,
   CircleDashed,
   Clock3,
-  Eye,
   FileOutput,
+  FileText,
   GitBranch,
   Layers3,
   Loader2,
   MessageSquareText,
   Plus,
+  RotateCcw,
   Search,
   Settings,
   Sparkles,
@@ -40,9 +41,11 @@ import { useAgentModuleSidebarData } from "@/components/workspace/agents/agent-m
 import {
   Dialog,
   DialogContent,
+  DialogFooter,
   DialogHeader,
   DialogTitle,
 } from "@/components/ui/dialog";
+import { Textarea } from "@/components/ui/textarea";
 import { useTheme } from "@/contexts/ThemeContext";
 import { useAgent } from "@/core/agents";
 import type { Agent } from "@/core/agents";
@@ -67,12 +70,16 @@ import {
   activatePositionSession,
   archivePositionSession,
   createPositionSession,
+  generatePositionActionPlan,
+  generatePositionSummary,
   getPositionSession,
   listPositionSessions,
+  rejectPositionNode,
   savePositionIntent,
   type PositionRoundtableNode,
   type PositionRoundtableSession,
 } from "@/position-roundtable/api/sessions";
+import { ArtifactPreviewModal } from "@/roundtable-planning/components/ArtifactPreviewModal";
 import {
   DEFAULT_MOCK_POSITION_TASK_ID,
   getMockPositionTask,
@@ -174,6 +181,59 @@ function allExecutableNodesDone(nodes: PositionRoundtableNode[]): boolean {
   return nodes.length > 0 && nodes.every((node) => node.status === "done");
 }
 
+function nodeHasDelivery(node: PositionRoundtableNode): boolean {
+  return (
+    node.revision > 0 ||
+    Boolean(node.latestAnswer?.trim()) ||
+    node.artifactManifest.some((artifact) => typeof artifact.path === "string" && artifact.path.trim())
+  );
+}
+
+function canRejectNodeDelivery(node: PositionRoundtableNode): boolean {
+  return node.status === "done" && nodeHasDelivery(node);
+}
+
+function recordString(record: Record<string, unknown> | null | undefined, key: string): string {
+  const value = record?.[key];
+  return typeof value === "string" ? value : "";
+}
+
+function nodeRejectionTitle(node: PositionRoundtableNode): string {
+  return recordString(node.lastRejection, "title");
+}
+
+function nodeRejectionReason(node: PositionRoundtableNode): string {
+  return recordString(node.lastRejection, "reason");
+}
+
+function snapshotStatus(snapshot: Record<string, unknown> | null | undefined): string {
+  const value = snapshot?.status;
+  return typeof value === "string" ? value : "";
+}
+
+function snapshotText(snapshot: Record<string, unknown> | null | undefined, key: string): string {
+  const value = snapshot?.[key];
+  return typeof value === "string" ? value : "";
+}
+
+function builtinNodeStatus(
+  snapshot: Record<string, unknown> | null | undefined,
+  ready: boolean,
+): NodeVisualStatus {
+  const status = snapshotStatus(snapshot);
+  if (status === "done") return "done";
+  if (status === "stale") return "stale";
+  if (status === "running") return "running";
+  if (status === "error") return "error";
+  return ready ? "ready" : "locked";
+}
+
+function resultPositionName(positionId: string | null): string {
+  if (positionId === "summary") return "内置总结节点";
+  if (positionId === "action_plan") return "内置规划节点";
+  return positionNameById(positionId);
+}
+
 function parseIntentSummary(snapshot: Record<string, unknown> | null | undefined): IntentSummary | null {
   if (!snapshot || typeof snapshot.objective !== "string" || !Array.isArray(snapshot.constraints)) {
     return null;
@@ -558,6 +618,8 @@ export default function PositionRoundtablePage() {
             >
               {positionSession.status === "archived"
                 ? "会话已归档"
+                : positionSession.status === "completed"
+                  ? "行动规划已生成"
                 : positionSession.status === "active"
                   ? "业务链已启动"
                   : "意图识别中"}
@@ -635,6 +697,7 @@ export default function PositionRoundtablePage() {
               <BusinessChainFlow
                 chain={activeChain}
                 nodes={positionSession?.nodes ?? []}
+                session={positionSession}
                 activeNodeKey={activeNodeKey}
                 onSelectNode={(node) => {
                   setActiveNodeKey(node.nodeKey);
@@ -726,6 +789,7 @@ export default function PositionRoundtablePage() {
             intentCompletedAt={intentCompletedAt}
             assignedAgentIds={assignedAgentIds}
             hasSelectedChain={Boolean(selectedChain)}
+            session={positionSession}
             onConfigureChain={
               selectedChain ? () => openPositionConfig(selectedChain.id) : undefined
             }
@@ -735,6 +799,7 @@ export default function PositionRoundtablePage() {
               setActiveNodeKey(node.nodeKey);
               setSelectedAgentId(node.agentId);
             }}
+            onSessionUpdate={setPositionSession}
           />
         </aside>
       </div>
@@ -1109,11 +1174,13 @@ const FLOW_NODE_GAP = 10;
 function BusinessChainFlow({
   chain,
   nodes,
+  session,
   activeNodeKey,
   onSelectNode,
 }: {
   chain: BusinessChain | null;
   nodes: PositionRoundtableNode[];
+  session: PositionRoundtableSession | null;
   activeNodeKey: string | null;
   onSelectNode: (node: PositionRoundtableNode) => void;
 }) {
@@ -1134,11 +1201,11 @@ function BusinessChainFlow({
           <TButton
             size="small"
             variant="text"
-            icon={<Eye className="size-3.5" />}
+            shape="circle"
+            icon={<Search className="size-3.5" />}
             onClick={() => setFlowDialogOpen(true)}
-          >
-            查看
-          </TButton>
+            title="查看完整流程图"
+          />
         )}
       </div>
       {!chain ? (
@@ -1150,12 +1217,13 @@ function BusinessChainFlow({
           <ChainFlowCanvas
             chain={chain}
             nodes={nodes}
+            session={session}
             activeNodeKey={activeNodeKey}
             onSelectNode={onSelectNode}
             className="h-[456px]"
           />
           <Dialog open={flowDialogOpen} onOpenChange={setFlowDialogOpen}>
-            <DialogContent className="flex h-[82vh] max-w-[1040px] flex-col gap-0 overflow-hidden p-0">
+            <DialogContent className="flex h-[88vh] w-[96vw] !max-w-[96vw] flex-col gap-0 overflow-hidden p-0">
               <DialogHeader className="shrink-0 border-b px-5 py-4 dark:border-[#2b8ffe]/25">
                 <DialogTitle className="flex items-center gap-2 text-base">
                   <Layers3 className="size-4 text-primary" />
@@ -1166,6 +1234,7 @@ function BusinessChainFlow({
                 <ChainFlowCanvas
                   chain={chain}
                   nodes={nodes}
+                  session={session}
                   activeNodeKey={activeNodeKey}
                   onSelectNode={(node) => {
                     onSelectNode(node);
@@ -1186,6 +1255,7 @@ function BusinessChainFlow({
 function ChainFlowCanvas({
   chain,
   nodes,
+  session,
   activeNodeKey,
   onSelectNode,
   className,
@@ -1193,6 +1263,7 @@ function ChainFlowCanvas({
 }: {
   chain: BusinessChain;
   nodes: PositionRoundtableNode[];
+  session: PositionRoundtableSession | null;
   activeNodeKey: string | null;
   onSelectNode: (node: PositionRoundtableNode) => void;
   className?: string;
@@ -1210,6 +1281,11 @@ function ChainFlowCanvas({
   const nodeWidth = expanded ? 190 : FLOW_NODE_WIDTH;
   const nodeGap = expanded ? 16 : FLOW_NODE_GAP;
   const allDone = allExecutableNodesDone(nodes);
+  const summaryStatus = builtinNodeStatus(session?.summarySnapshot, allDone);
+  const actionPlanStatus = builtinNodeStatus(
+    session?.actionPlanSnapshot,
+    snapshotStatus(session?.summarySnapshot) === "done",
+  );
 
   const onPanStart = (event: React.PointerEvent<HTMLDivElement>) => {
     if (event.button !== 0) return;
@@ -1322,18 +1398,18 @@ function ChainFlowCanvas({
           title="方案总结智能体"
           description="内置总结节点"
           accent="#6366f1"
-          nodeStatus={allDone ? "ready" : "locked"}
+          nodeStatus={summaryStatus}
           width={nodeWidth}
-          titleAttr="待接入：对所有有效交付产物进行方案总结"
+          titleAttr="对所有有效交付产物进行方案总结"
         />
         <VerticalFlowConnector seatCount={1} width={nodeWidth} nodeWidth={nodeWidth} nodeGap={nodeGap} />
         <CompactChainNode
           title="行动规划智能体"
           description="内置规划节点"
           accent="#0ea5e9"
-          nodeStatus="locked"
+          nodeStatus={actionPlanStatus}
           width={nodeWidth}
-          titleAttr="待接入：基于方案总结和岗位产物拆解子任务"
+          titleAttr="基于方案总结和岗位产物拆解子任务"
         />
       </div>
     </div>
@@ -1353,7 +1429,11 @@ function VerticalFlowConnector({
 }) {
   const nodeCenter = nodeWidth / 2;
   if (seatCount <= 1) {
-    return <span className="h-7 w-px bg-slate-300 dark:bg-[#2b8ffe]/55" />;
+    return (
+      <span className="relative h-7 w-px bg-slate-300 dark:bg-[#2b8ffe]/55">
+        <span className="absolute -bottom-0.5 left-1/2 size-1.5 -translate-x-1/2 rotate-45 border-b border-r border-slate-300 dark:border-[#2b8ffe]/55" />
+      </span>
+    );
   }
 
   return (
@@ -1370,7 +1450,9 @@ function VerticalFlowConnector({
           style={{
             left: `${((index * (nodeWidth + nodeGap) + nodeCenter) / width) * 100}%`,
           }}
-        />
+        >
+          <span className="absolute -bottom-0.5 left-1/2 size-1.5 -translate-x-1/2 rotate-45 border-b border-r border-slate-300 dark:border-[#2b8ffe]/55" />
+        </span>
       ))}
     </div>
   );
@@ -1442,10 +1524,12 @@ function RightWorkspace({
   intentCompletedAt,
   assignedAgentIds,
   hasSelectedChain,
+  session,
   onConfigureChain,
   nodes,
   chain,
   onSelectNode,
+  onSessionUpdate,
 }: {
   selectedAgent: Agent | null;
   selectedAgentId: string | null;
@@ -1455,10 +1539,12 @@ function RightWorkspace({
   intentCompletedAt: string;
   assignedAgentIds: Set<string>;
   hasSelectedChain: boolean;
+  session: PositionRoundtableSession | null;
   onConfigureChain?: () => void;
   nodes: PositionRoundtableNode[];
   chain: BusinessChain | null;
   onSelectNode: (node: PositionRoundtableNode) => void;
+  onSessionUpdate: (session: PositionRoundtableSession) => void;
 }) {
   const [tab, setTab] = useState<WorkspaceTab>("agents");
 
@@ -1540,7 +1626,9 @@ function RightWorkspace({
             intentCompletedAt={intentCompletedAt}
             nodes={nodes}
             chain={chain}
+            session={session}
             onSelectNode={onSelectNode}
+            onSessionUpdate={onSessionUpdate}
           />
         </div>
       )}
@@ -1706,39 +1794,64 @@ function PositionAgentList({
   );
 }
 
+type ResultKind = "intent" | "delivery" | "artifact" | "summary" | "action_plan";
+
+interface ResultItem {
+  id: string;
+  kind: ResultKind;
+  node: PositionRoundtableNode | null;
+  agentName: string;
+  productName: string;
+  summary: string;
+  positionId: string | null;
+  updatedAt: string | undefined;
+  status?: NodeVisualStatus;
+  artifactPath?: string;
+  artifactMimeType?: string | null;
+}
+
 function AnalysisResults({
   intentObjective,
   intentCompletedAt,
   nodes,
   chain,
+  session,
   onSelectNode,
+  onSessionUpdate,
 }: {
   intentObjective?: string;
   intentCompletedAt: string;
   nodes: PositionRoundtableNode[];
   chain: BusinessChain | null;
+  session: PositionRoundtableSession | null;
   onSelectNode: (node: PositionRoundtableNode) => void;
+  onSessionUpdate: (session: PositionRoundtableSession) => void;
 }) {
-  type ResultKind = "intent" | "delivery" | "artifact";
-  interface ResultItem {
-    id: string;
-    kind: ResultKind;
-    node: PositionRoundtableNode | null;
-    agentName: string;
-    productName: string;
-    summary: string;
-    positionId: string | null;
-    updatedAt: string | undefined;
-    status?: NodeVisualStatus;
-  }
-
   const [positionFilter, setPositionFilter] = useState("all");
   const [nodeFilter, setNodeFilter] = useState("all");
   const [kindFilter, setKindFilter] = useState<"all" | ResultKind>("all");
+  const [detailItem, setDetailItem] = useState<ResultItem | null>(null);
+  const [rejectNode, setRejectNode] = useState<PositionRoundtableNode | null>(null);
+  const [rejectTitle, setRejectTitle] = useState("");
+  const [rejectReason, setRejectReason] = useState("");
+  const [rejectSubmitting, setRejectSubmitting] = useState(false);
+  const [summarySubmitting, setSummarySubmitting] = useState(false);
+  const [actionPlanSubmitting, setActionPlanSubmitting] = useState(false);
+  const [previewArtifact, setPreviewArtifact] = useState<{
+    threadId: string;
+    path: string;
+    name: string;
+    mimeType: string | null;
+  } | null>(null);
   const seatsByAgentId = useMemo(
     () => new Map((chain?.seats ?? []).map((seat) => [seat.agent_id, seat])),
     [chain],
   );
+  const allDelivered = allExecutableNodesDone(nodes);
+  const summaryDone = snapshotStatus(session?.summarySnapshot) === "done";
+  const summaryStale = snapshotStatus(session?.summarySnapshot) === "stale";
+  const actionPlanDone = snapshotStatus(session?.actionPlanSnapshot) === "done";
+  const actionPlanStale = snapshotStatus(session?.actionPlanSnapshot) === "stale";
   const resultItems = useMemo<ResultItem[]>(() => {
     const items: ResultItem[] = [];
     if (intentObjective) {
@@ -1773,7 +1886,9 @@ function AnalysisResults({
       const summary =
         node.latestAnswer ||
         (node.status === "locked"
-          ? "等待上游阶段完成后解锁。"
+          ? node.invalidatedBy
+            ? "上游产物已被驳回或重做，等待前序节点重新完成。"
+            : "等待上游阶段完成后解锁。"
           : node.status === "running"
             ? "智能体正在生成回答与产物。"
             : node.status === "stale"
@@ -1814,11 +1929,49 @@ function AnalysisResults({
           positionId: node.positionId,
           updatedAt: node.updatedAt,
           status: node.status,
+          artifactPath: path,
+          artifactMimeType: mimeType,
         });
       });
     }
+    const summarySnapshot = session?.summarySnapshot;
+    if (summarySnapshot) {
+      items.push({
+        id: "builtin:summary",
+        kind: "summary",
+        node: null,
+        agentName: "方案总结智能体",
+        productName: snapshotText(summarySnapshot, "title") || "岗位会商方案总结报告",
+        summary:
+          snapshotText(summarySnapshot, "content") ||
+          (snapshotStatus(summarySnapshot) === "stale"
+            ? "前序岗位产物已变更，需要重新生成方案总结。"
+            : "方案总结已生成。"),
+        positionId: "summary",
+        updatedAt: snapshotText(summarySnapshot, "generated_at") || undefined,
+        status: builtinNodeStatus(summarySnapshot, true),
+      });
+    }
+    const actionPlanSnapshot = session?.actionPlanSnapshot;
+    if (actionPlanSnapshot) {
+      items.push({
+        id: "builtin:action-plan",
+        kind: "action_plan",
+        node: null,
+        agentName: "行动规划智能体",
+        productName: snapshotText(actionPlanSnapshot, "title") || "岗位会商行动规划",
+        summary:
+          snapshotText(actionPlanSnapshot, "content") ||
+          (snapshotStatus(actionPlanSnapshot) === "stale"
+            ? "前序岗位产物已变更，需要重新生成行动规划。"
+            : "行动规划已生成。"),
+        positionId: "action_plan",
+        updatedAt: snapshotText(actionPlanSnapshot, "generated_at") || undefined,
+        status: builtinNodeStatus(actionPlanSnapshot, true),
+      });
+    }
     return items.sort((left, right) => (right.updatedAt ?? "").localeCompare(left.updatedAt ?? ""));
-  }, [intentObjective, nodes, seatsByAgentId]);
+  }, [intentObjective, nodes, seatsByAgentId, session?.actionPlanSnapshot, session?.summarySnapshot]);
   const positionOptions = useMemo(
     () => [
       { label: "全部岗位", value: "all" },
@@ -1851,6 +2004,91 @@ function AnalysisResults({
     [kindFilter, nodeFilter, positionFilter, resultItems],
   );
 
+  const openDetail = useCallback(
+    (item: ResultItem) => {
+      setDetailItem(item);
+      if (item.node) {
+        onSelectNode(item.node);
+      }
+    },
+    [onSelectNode],
+  );
+
+  const openRejectDialog = useCallback((node: PositionRoundtableNode) => {
+    setRejectNode(node);
+    setRejectTitle(nodeRejectionTitle(node));
+    setRejectReason("");
+  }, []);
+
+  const handleRejectSubmit = useCallback(async () => {
+    if (!rejectNode) return;
+    const title = rejectTitle.trim();
+    const reason = rejectReason.trim();
+    if (!title || !reason) {
+      toast.warning("请填写驳回标题和理由");
+      return;
+    }
+    setRejectSubmitting(true);
+    try {
+      const session = await rejectPositionNode(rejectNode.sessionId, rejectNode.nodeKey, {
+        title,
+        reason,
+      });
+      onSessionUpdate(session);
+      setRejectNode(null);
+      setRejectTitle("");
+      setRejectReason("");
+      setDetailItem(null);
+      toast.success("已驳回该产物，后续阶段已标记为需重新完成");
+    } catch (error) {
+      toast.error(`驳回失败：${error instanceof Error ? error.message : String(error)}`);
+    } finally {
+      setRejectSubmitting(false);
+    }
+  }, [onSessionUpdate, rejectNode, rejectReason, rejectTitle]);
+
+  const handleGenerateSummary = useCallback(async () => {
+    if (!session) {
+      toast.warning("请先启动业务链");
+      return;
+    }
+    if (!allDelivered) {
+      toast.warning("所有岗位产物完成后才能生成方案总结");
+      return;
+    }
+    setSummarySubmitting(true);
+    try {
+      const next = await generatePositionSummary(session.id);
+      onSessionUpdate(next);
+      toast.success("方案总结已生成");
+    } catch (error) {
+      toast.error(`生成方案总结失败：${error instanceof Error ? error.message : String(error)}`);
+    } finally {
+      setSummarySubmitting(false);
+    }
+  }, [allDelivered, onSessionUpdate, session]);
+
+  const handleGenerateActionPlan = useCallback(async () => {
+    if (!session) {
+      toast.warning("请先启动业务链");
+      return;
+    }
+    if (!summaryDone) {
+      toast.warning("请先生成有效的方案总结");
+      return;
+    }
+    setActionPlanSubmitting(true);
+    try {
+      const next = await generatePositionActionPlan(session.id);
+      onSessionUpdate(next);
+      toast.success("行动规划已生成");
+    } catch (error) {
+      toast.error(`生成行动规划失败：${error instanceof Error ? error.message : String(error)}`);
+    } finally {
+      setActionPlanSubmitting(false);
+    }
+  }, [onSessionUpdate, session, summaryDone]);
+
   if (resultItems.length === 0) {
     return (
       <div className="flex h-full min-h-[260px] flex-col items-center justify-center rounded-xl border border-dashed p-6 text-center">
@@ -1864,123 +2102,431 @@ function AnalysisResults({
   }
 
   return (
-    <div className="space-y-3 rounded-xl border border-slate-200 p-3.5 dark:border-border">
-      <div className="flex items-center justify-between">
-        <div>
-          <h3 className="text-sm font-bold">交付产物列表</h3>
-          <p className="text-[11px] text-muted-foreground">按岗位节点与生成时间展示</p>
+    <>
+      <div className="space-y-3 rounded-xl border border-slate-200 p-3.5 dark:border-border">
+        <div className="flex items-center justify-between">
+          <div>
+            <h3 className="text-sm font-bold">交付产物列表</h3>
+            <p className="text-[11px] text-muted-foreground">按岗位节点与生成时间展示</p>
+          </div>
+          <span className="rounded-full bg-emerald-500/10 px-2 py-0.5 text-[10px] font-semibold text-emerald-600">
+            {visibleItems.length}/{resultItems.length} 项结果
+          </span>
         </div>
-        <span className="rounded-full bg-emerald-500/10 px-2 py-0.5 text-[10px] font-semibold text-emerald-600">
-          {visibleItems.length}/{resultItems.length} 项结果
-        </span>
-      </div>
-      <div className="grid grid-cols-1 gap-2 sm:grid-cols-2">
-        <TSelect size="small" value={positionFilter} options={positionOptions} onChange={(value) => setPositionFilter(String(value))} />
-        <TSelect size="small" value={nodeFilter} options={nodeOptions} onChange={(value) => setNodeFilter(String(value))} />
-        <TSelect
-          size="small"
-          value={kindFilter}
-          options={[
-            { label: "全部类型", value: "all" },
-            { label: "意图理解", value: "intent" },
-            { label: "节点交付", value: "delivery" },
-            { label: "文件产物", value: "artifact" },
-          ]}
-          onChange={(value) => setKindFilter(String(value) as "all" | ResultKind)}
-        />
-      </div>
-      {visibleItems.length === 0 ? (
-        <div className="rounded-xl border border-dashed p-5 text-center text-xs text-muted-foreground">
-          当前筛选条件下没有结果
+        <div className="grid grid-cols-1 gap-2 sm:grid-cols-2">
+          <TSelect size="small" value={positionFilter} options={positionOptions} onChange={(value) => setPositionFilter(String(value))} />
+          <TSelect size="small" value={nodeFilter} options={nodeOptions} onChange={(value) => setNodeFilter(String(value))} />
+          <TSelect
+            size="small"
+            value={kindFilter}
+            options={[
+              { label: "全部类型", value: "all" },
+              { label: "意图理解", value: "intent" },
+              { label: "节点交付", value: "delivery" },
+              { label: "文件产物", value: "artifact" },
+              { label: "方案总结", value: "summary" },
+              { label: "行动规划", value: "action_plan" },
+            ]}
+            onChange={(value) => setKindFilter(String(value) as "all" | ResultKind)}
+          />
         </div>
-      ) : (
-        visibleItems.map((item) => {
-          const displayedTime = item.updatedAt
-            ? new Intl.DateTimeFormat("zh-CN", {
-                month: "2-digit",
-                day: "2-digit",
-                hour: "2-digit",
-                minute: "2-digit",
-                hour12: false,
-              }).format(new Date(item.updatedAt))
-            : intentCompletedAt || "刚刚";
-          const stale = item.node?.status === "stale";
-          const status = item.status ? nodeStatusMeta(item.status) : null;
-          const StatusIcon = status?.Icon;
-          const contents = (
-            <>
-              <div className="flex items-start gap-3">
-                <span
-                  className={cn(
-                    "flex size-10 shrink-0 items-center justify-center rounded-xl",
-                    item.kind === "intent"
-                      ? "bg-violet-500/10 text-violet-600"
-                      : item.kind === "artifact"
-                        ? "bg-amber-500/10 text-amber-600"
-                        : "bg-sky-500/10 text-sky-600",
-                  )}
-                >
-                  {item.kind === "artifact" ? <FileOutput className="size-5" /> : <Bot className="size-5" />}
-                </span>
-                <div className="min-w-0 flex-1">
-                  <div className="flex items-center gap-1.5">
-                    <p className="truncate text-sm font-bold">{desensitize(item.agentName)}</p>
-                    {status && StatusIcon && (
-                      <span
-                        className={cn(
-                          "inline-flex shrink-0 items-center gap-1 rounded-full px-1.5 py-0.5 text-[9px] font-semibold",
-                          status.badgeClassName,
-                        )}
-                      >
-                        <StatusIcon
-                          className={cn("size-2.5", status.spin && "animate-spin")}
-                          strokeWidth={2.5}
-                        />
-                        {status.label}
-                      </span>
-                    )}
-                    {stale && (
-                      <span className="shrink-0 rounded-full bg-amber-500/10 px-1.5 py-0.5 text-[9px] font-semibold text-amber-700 dark:text-amber-300">
-                        上游已更新
-                      </span>
-                    )}
-                  </div>
-                  <p className="mt-1 truncate text-xs font-medium text-primary">
-                    {desensitize(item.productName)}
-                  </p>
-                  <p className="mt-2 line-clamp-2 text-[11px] leading-5 text-muted-foreground">
-                    {desensitize(item.summary)}
-                  </p>
-                </div>
+        {nodes.length > 0 && (
+          <div className="rounded-xl border border-slate-200 bg-slate-50/70 p-3 dark:border-[#2b8ffe]/30 dark:bg-[#032650]/65">
+            <div className="mb-2 flex items-center justify-between gap-2">
+              <div className="min-w-0">
+                <p className="text-xs font-bold text-slate-800 dark:text-[#e8edf5]">
+                  内置收口智能体
+                </p>
+                <p className="mt-0.5 truncate text-[11px] text-muted-foreground dark:text-[#8aa0c4]">
+                  全部岗位交付后生成方案总结，再生成行动规划
+                </p>
               </div>
-              <footer className="mt-4 flex items-center justify-between border-t pt-3 text-[11px] text-muted-foreground">
-                <span className="flex items-center gap-1.5">
-                  <BriefcaseBusiness className="size-3.5" />
-                  {positionNameById(item.positionId)}
-                </span>
-                <span className="flex items-center gap-1.5">
-                  <Clock3 className="size-3.5" />
-                  {displayedTime}
-                </span>
-              </footer>
-            </>
-          );
-          return item.node ? (
-            <button
-              key={item.id}
-              type="button"
-              onClick={() => onSelectNode(item.node!)}
-              className="w-full rounded-xl border border-slate-200 bg-card p-3.5 text-left shadow-sm transition hover:border-primary/45 hover:shadow-md dark:border-border"
-            >
-              {contents}
-            </button>
-          ) : (
-            <article key={item.id} className="rounded-xl border border-slate-200 bg-card p-3.5 shadow-sm dark:border-border">
-              {contents}
-            </article>
-          );
-        })
+              <span
+                className={cn(
+                  "shrink-0 rounded-full px-2 py-0.5 text-[10px] font-semibold",
+                  allDelivered
+                    ? "bg-emerald-500/10 text-emerald-700 dark:text-emerald-300"
+                    : "bg-slate-500/10 text-slate-500 dark:text-[#8aa0c4]",
+                )}
+              >
+                {nodes.filter((node) => node.status === "done").length}/{nodes.length} 已交付
+              </span>
+            </div>
+            <div className="grid grid-cols-1 gap-2">
+              <TButton
+                block
+                size="small"
+                theme={summaryStale ? "warning" : "primary"}
+                variant={summaryDone ? "outline" : "base"}
+                loading={summarySubmitting}
+                disabled={!allDelivered || summarySubmitting}
+                icon={<Sparkles className="size-3.5" />}
+                onClick={() => void handleGenerateSummary()}
+              >
+                {summaryDone ? "重新生成方案总结" : summaryStale ? "重新生成失效总结" : "生成方案总结"}
+              </TButton>
+              <TButton
+                block
+                size="small"
+                theme={actionPlanStale ? "warning" : "primary"}
+                variant={actionPlanDone ? "outline" : "base"}
+                loading={actionPlanSubmitting}
+                disabled={!summaryDone || actionPlanSubmitting}
+                icon={<Target className="size-3.5" />}
+                onClick={() => void handleGenerateActionPlan()}
+              >
+                {actionPlanDone ? "重新生成行动规划" : actionPlanStale ? "重新生成失效规划" : "生成行动规划"}
+              </TButton>
+            </div>
+          </div>
+        )}
+        {visibleItems.length === 0 ? (
+          <div className="rounded-xl border border-dashed p-5 text-center text-xs text-muted-foreground">
+            当前筛选条件下没有结果
+          </div>
+        ) : (
+          visibleItems.map((item) => {
+            const displayedTime = item.updatedAt
+              ? new Intl.DateTimeFormat("zh-CN", {
+                  month: "2-digit",
+                  day: "2-digit",
+                  hour: "2-digit",
+                  minute: "2-digit",
+                  hour12: false,
+                }).format(new Date(item.updatedAt))
+              : intentCompletedAt || "刚刚";
+            const stale = item.node?.status === "stale";
+            const invalidated = Boolean(item.node?.invalidatedBy);
+            const status = item.status ? nodeStatusMeta(item.status) : null;
+            const StatusIcon = status?.Icon;
+            const contents = (
+              <>
+                <div className="flex items-start gap-3">
+                  <span
+                    className={cn(
+                      "flex size-10 shrink-0 items-center justify-center rounded-xl",
+                      item.kind === "intent"
+                        ? "bg-violet-500/10 text-violet-600"
+                        : item.kind === "artifact"
+                          ? "bg-amber-500/10 text-amber-600"
+                          : "bg-sky-500/10 text-sky-600",
+                    )}
+                  >
+                    {item.kind === "artifact" ? <FileOutput className="size-5" /> : <Bot className="size-5" />}
+                  </span>
+                  <div className="min-w-0 flex-1">
+                    <div className="flex items-center gap-1.5">
+                      <p className="truncate text-sm font-bold">{desensitize(item.agentName)}</p>
+                      {status && StatusIcon && (
+                        <span
+                          className={cn(
+                            "inline-flex shrink-0 items-center gap-1 rounded-full px-1.5 py-0.5 text-[9px] font-semibold",
+                            status.badgeClassName,
+                          )}
+                        >
+                          <StatusIcon
+                            className={cn("size-2.5", status.spin && "animate-spin")}
+                            strokeWidth={2.5}
+                          />
+                          {status.label}
+                        </span>
+                      )}
+                      {(stale || invalidated) && (
+                        <span className="shrink-0 rounded-full bg-amber-500/10 px-1.5 py-0.5 text-[9px] font-semibold text-amber-700 dark:text-amber-300">
+                          上游已更新
+                        </span>
+                      )}
+                    </div>
+                    <p className="mt-1 truncate text-xs font-medium text-primary">
+                      {desensitize(item.productName)}
+                    </p>
+                    <p className="mt-2 line-clamp-2 text-[11px] leading-5 text-muted-foreground">
+                      {desensitize(item.summary)}
+                    </p>
+                  </div>
+                </div>
+                <footer className="mt-4 flex items-center justify-between border-t pt-3 text-[11px] text-muted-foreground">
+                  <span className="flex items-center gap-1.5">
+                    <BriefcaseBusiness className="size-3.5" />
+                    {resultPositionName(item.positionId)}
+                  </span>
+                  <span className="flex items-center gap-1.5">
+                    <Clock3 className="size-3.5" />
+                    {displayedTime}
+                  </span>
+                </footer>
+              </>
+            );
+            return item.node ? (
+              <button
+                key={item.id}
+                type="button"
+                onClick={() => openDetail(item)}
+                className={cn(
+                  "w-full rounded-xl border border-slate-200 bg-card p-3.5 text-left shadow-sm transition hover:border-primary/45 hover:shadow-md dark:border-border",
+                  item.node.status === "rejected" && "border-rose-200 bg-rose-50/60 dark:border-rose-500/35 dark:bg-rose-950/20",
+                  invalidated && "border-amber-200 bg-amber-50/60 dark:border-amber-500/35 dark:bg-amber-950/20",
+                )}
+              >
+                {contents}
+              </button>
+            ) : (
+              <button
+                key={item.id}
+                type="button"
+                onClick={() => openDetail(item)}
+                className="w-full rounded-xl border border-slate-200 bg-card p-3.5 text-left shadow-sm transition hover:border-primary/45 hover:shadow-md dark:border-border"
+              >
+                {contents}
+              </button>
+            );
+          })
+        )}
+      </div>
+
+      <DeliverableDetailDialog
+        item={detailItem}
+        onOpenChange={(open) => {
+          if (!open) setDetailItem(null);
+        }}
+        onReject={(node) => openRejectDialog(node)}
+        onPreviewArtifact={(item) => {
+          if (!item.node?.threadId || !item.artifactPath) {
+            toast.info("该文件产物暂无可预览路径");
+            return;
+          }
+          setPreviewArtifact({
+            threadId: item.node.threadId,
+            path: item.artifactPath,
+            name: item.productName,
+            mimeType: item.artifactMimeType ?? null,
+          });
+        }}
+      />
+
+      <RejectDeliveryDialog
+        node={rejectNode}
+        title={rejectTitle}
+        reason={rejectReason}
+        submitting={rejectSubmitting}
+        onOpenChange={(open) => {
+          if (!open && !rejectSubmitting) {
+            setRejectNode(null);
+            setRejectTitle("");
+            setRejectReason("");
+          }
+        }}
+        onTitleChange={setRejectTitle}
+        onReasonChange={setRejectReason}
+        onSubmit={() => void handleRejectSubmit()}
+      />
+
+      {previewArtifact && (
+        <ArtifactPreviewModal
+          threadId={previewArtifact.threadId}
+          path={previewArtifact.path}
+          name={previewArtifact.name}
+          mimeType={previewArtifact.mimeType}
+          onClose={() => setPreviewArtifact(null)}
+        />
       )}
-    </div>
+    </>
+  );
+}
+
+function DeliverableDetailDialog({
+  item,
+  onOpenChange,
+  onReject,
+  onPreviewArtifact,
+}: {
+  item: ResultItem | null;
+  onOpenChange: (open: boolean) => void;
+  onReject: (node: PositionRoundtableNode) => void;
+  onPreviewArtifact: (item: ResultItem) => void;
+}) {
+  const status = item?.status ? nodeStatusMeta(item.status) : null;
+  const StatusIcon = status?.Icon;
+  const canReject = item?.node ? canRejectNodeDelivery(item.node) : false;
+  const rejectionTitle = item?.node ? nodeRejectionTitle(item.node) : "";
+  const rejectionReason = item?.node ? nodeRejectionReason(item.node) : "";
+  const displayedTime = item?.updatedAt
+    ? new Intl.DateTimeFormat("zh-CN", {
+        month: "2-digit",
+        day: "2-digit",
+        hour: "2-digit",
+        minute: "2-digit",
+        hour12: false,
+      }).format(new Date(item.updatedAt))
+    : "";
+
+  return (
+    <Dialog open={Boolean(item)} onOpenChange={onOpenChange}>
+      <DialogContent className="flex max-h-[82vh] w-[720px] !max-w-[calc(100vw-2rem)] flex-col gap-0 overflow-hidden p-0">
+        <DialogHeader className="shrink-0 border-b px-5 py-4 dark:border-[#2b8ffe]/25">
+          <DialogTitle className="flex items-center gap-2 text-base">
+            <FileOutput className="size-4 text-primary" />
+            交付产物详情
+          </DialogTitle>
+        </DialogHeader>
+        {!item ? null : (
+          <div className="custom-scrollbar min-h-0 flex-1 overflow-y-auto px-5 py-4">
+            <div className="flex items-start justify-between gap-3">
+              <div className="min-w-0">
+                <p className="text-sm font-extrabold text-slate-900 dark:text-[#e8edf5]">
+                  {desensitize(item.productName)}
+                </p>
+                <p className="mt-1 truncate text-xs text-muted-foreground">
+                  {desensitize(item.agentName)} · {resultPositionName(item.positionId)}
+                </p>
+              </div>
+              {status && StatusIcon && (
+                <span
+                  className={cn(
+                    "inline-flex shrink-0 items-center gap-1.5 rounded-full px-2 py-1 text-[11px] font-semibold",
+                    status.badgeClassName,
+                  )}
+                >
+                  <StatusIcon className={cn("size-3.5", status.spin && "animate-spin")} />
+                  {status.label}
+                </span>
+              )}
+            </div>
+
+            <div className="mt-4 grid grid-cols-2 gap-2 text-[11px] text-muted-foreground">
+              <div className="rounded-lg bg-slate-50 px-3 py-2 dark:bg-[#032650]">
+                岗位：{resultPositionName(item.positionId)}
+              </div>
+              <div className="rounded-lg bg-slate-50 px-3 py-2 dark:bg-[#032650]">
+                时间：{displayedTime || "暂无"}
+              </div>
+              {item.node && (
+                <>
+                  <div className="rounded-lg bg-slate-50 px-3 py-2 dark:bg-[#032650]">
+                    版本：第 {item.node.revision} 版
+                  </div>
+                  <div className="rounded-lg bg-slate-50 px-3 py-2 dark:bg-[#032650]">
+                    驳回次数：{item.node.rejectionCount}
+                  </div>
+                </>
+              )}
+            </div>
+
+            {item.node?.invalidatedBy && (
+              <div className="mt-4 rounded-xl border border-amber-200 bg-amber-50 px-3 py-2 text-xs leading-5 text-amber-800 dark:border-amber-500/35 dark:bg-amber-950/25 dark:text-amber-200">
+                该产物受上游节点「{item.node.invalidatedBy}」影响，已不再作为后续总结或问答输入。
+              </div>
+            )}
+
+            {rejectionTitle && (
+              <div className="mt-4 rounded-xl border border-rose-200 bg-rose-50 px-3 py-2 text-xs leading-5 text-rose-800 dark:border-rose-500/35 dark:bg-rose-950/25 dark:text-rose-200">
+                <p className="font-semibold">最近驳回：{desensitize(rejectionTitle)}</p>
+                {rejectionReason && <p className="mt-1">{desensitize(rejectionReason)}</p>}
+              </div>
+            )}
+
+            <div className="mt-4 rounded-xl border border-slate-200 bg-white p-3 dark:border-[#2b8ffe]/30 dark:bg-[#042b59]/65">
+              <div className="mb-2 flex items-center justify-between gap-2">
+                <p className="text-xs font-bold text-slate-700 dark:text-[#e8edf5]">
+                  {item.kind === "artifact" ? "文件产物" : "产物内容"}
+                </p>
+                {item.kind === "artifact" && (
+                  <TButton
+                    size="small"
+                    variant="outline"
+                    icon={<FileText className="size-3.5" />}
+                    onClick={() => onPreviewArtifact(item)}
+                  >
+                    查看文件
+                  </TButton>
+                )}
+              </div>
+              <p className="whitespace-pre-wrap text-xs leading-6 text-slate-600 dark:text-[#c5cfe0]">
+                {desensitize(item.summary || "暂无产物正文")}
+              </p>
+            </div>
+          </div>
+        )}
+        <DialogFooter className="shrink-0 border-t px-5 py-3 dark:border-[#2b8ffe]/25">
+          {item?.node && (
+            <TButton
+              theme="danger"
+              variant="outline"
+              icon={<RotateCcw className="size-3.5" />}
+              disabled={!canReject}
+              onClick={() => onReject(item.node!)}
+            >
+              驳回产物
+            </TButton>
+          )}
+          <TButton variant="outline" onClick={() => onOpenChange(false)}>
+            关闭
+          </TButton>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
+
+function RejectDeliveryDialog({
+  node,
+  title,
+  reason,
+  submitting,
+  onOpenChange,
+  onTitleChange,
+  onReasonChange,
+  onSubmit,
+}: {
+  node: PositionRoundtableNode | null;
+  title: string;
+  reason: string;
+  submitting: boolean;
+  onOpenChange: (open: boolean) => void;
+  onTitleChange: (value: string) => void;
+  onReasonChange: (value: string) => void;
+  onSubmit: () => void;
+}) {
+  return (
+    <Dialog open={Boolean(node)} onOpenChange={onOpenChange}>
+      <DialogContent className="w-[560px] !max-w-[calc(100vw-2rem)]">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2 text-base">
+            <RotateCcw className="size-4 text-destructive" />
+            驳回交付产物
+          </DialogTitle>
+        </DialogHeader>
+        <div className="space-y-3">
+          <div className="rounded-xl border border-amber-200 bg-amber-50 px-3 py-2 text-xs leading-5 text-amber-800 dark:border-amber-500/35 dark:bg-amber-950/25 dark:text-amber-200">
+            驳回后，该节点会回到需重做状态；其后续阶段的产物会一起失效，但历史内容仍可查看。
+          </div>
+          <label className="block space-y-1.5">
+            <span className="text-xs font-semibold text-slate-700 dark:text-[#c5cfe0]">驳回标题</span>
+            <TInput
+              value={title}
+              placeholder="例如：依据不足，需要补充约束条件"
+              onChange={onTitleChange}
+            />
+          </label>
+          <label className="block space-y-1.5">
+            <span className="text-xs font-semibold text-slate-700 dark:text-[#c5cfe0]">驳回理由</span>
+            <Textarea
+              rows={5}
+              value={reason}
+              placeholder="请说明需要重做的原因、补充材料或调整方向"
+              onChange={(event) => onReasonChange(event.target.value)}
+            />
+          </label>
+        </div>
+        <DialogFooter>
+          <TButton variant="outline" disabled={submitting} onClick={() => onOpenChange(false)}>
+            取消
+          </TButton>
+          <TButton theme="danger" loading={submitting} onClick={onSubmit}>
+            确认驳回
+          </TButton>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
   );
 }
diff --git a/offline-backend-20260512/backend/app/gateway/routers/position_roundtable.py b/offline-backend-20260512/backend/app/gateway/routers/position_roundtable.py
index 808e608f..781b8f07 100644
--- a/offline-backend-20260512/backend/app/gateway/routers/position_roundtable.py
+++ b/offline-backend-20260512/backend/app/gateway/routers/position_roundtable.py
@@ -9,6 +9,7 @@ messages and artifacts stay in the established LangGraph thread stores.
 from __future__ import annotations
 
 import asyncio
+from datetime import UTC, datetime
 from pathlib import Path
 from typing import Any
 
@@ -52,6 +53,9 @@ class NodeResponse(BaseModel):
     artifact_manifest: list[dict[str, Any]] = Field(default_factory=list)
     revision: int = 0
     upstream_revision: dict[str, Any] | None = None
+    rejection_count: int = 0
+    last_rejection: dict[str, Any] | None = None
+    invalidated_by: str | None = None
     created_at: str | None = None
     updated_at: str | None = None
 
@@ -64,6 +68,8 @@ class SessionResponse(BaseModel):
     chain_snapshot: dict[str, Any] | None = None
     intent_thread_id: str | None = None
     intent_snapshot: dict[str, Any] | None = None
+    summary_snapshot: dict[str, Any] | None = None
+    action_plan_snapshot: dict[str, Any] | None = None
     status: str
     created_at: str | None = None
     updated_at: str | None = None
@@ -101,6 +107,11 @@ class CompleteTurnRequest(BaseModel):
     upstream_revision: dict[str, Any] | None = None
 
 
+class RejectNodeRequest(BaseModel):
+    title: str = Field(min_length=1, max_length=120)
+    reason: str = Field(min_length=1, max_length=5_000)
+
+
 def _current_user_id(request: Request) -> str:
     user = getattr(request.state, "user", None)
     return str(user.id) if user is not None else get_effective_user_id()
@@ -229,6 +240,175 @@ def _truncate_text(value: Any, limit: int) -> str:
     return f"{text[:limit]}\n…（已按交接上下文长度截断）"
 
 
+def _text_from_keys(source: dict[str, Any], keys: list[str], fallback: str = "") -> str:
+    for key in keys:
+        value = source.get(key)
+        if isinstance(value, str) and value.strip():
+            return value.strip()
+    return fallback
+
+
+def _seat_meta(session: dict[str, Any], node: dict[str, Any]) -> tuple[str, str]:
+    chain = session.get("chain_snapshot") if isinstance(session.get("chain_snapshot"), dict) else {}
+    seats = chain.get("seats") if isinstance(chain.get("seats"), list) else []
+    seat = next(
+        (
+            item
+            for item in seats
+            if isinstance(item, dict) and str(item.get("agent_id") or "") == str(node.get("agent_id") or "")
+        ),
+        {},
+    )
+    agent_name = str(seat.get("name") or node.get("agent_id") or "未命名智能体")
+    position_id = str(node.get("position_id") or seat.get("position_id") or "未配置岗位")
+    return agent_name, position_id
+
+
+def _delivered_nodes(nodes: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    return [node for node in nodes if node.get("status") == "done"]
+
+
+def _all_nodes_delivered(nodes: list[dict[str, Any]]) -> bool:
+    return bool(nodes) and all(node.get("status") == "done" for node in nodes)
+
+
+def _artifact_lines(node: dict[str, Any]) -> list[str]:
+    artifacts = node.get("artifact_manifest")
+    if not isinstance(artifacts, list) or not artifacts:
+        return []
+    lines: list[str] = []
+    for artifact in artifacts[:8]:
+        if not isinstance(artifact, dict):
+            continue
+        name = artifact.get("name") or artifact.get("filename") or artifact.get("path") or "未命名产物"
+        path = artifact.get("path") or artifact.get("artifact_url") or ""
+        lines.append(f"  - {name}{f'（{path}）' if path else ''}")
+    return lines
+
+
+def _build_summary_snapshot(session: dict[str, Any], nodes: list[dict[str, Any]]) -> dict[str, Any]:
+    now = datetime.now(UTC).isoformat()
+    task = session.get("task_snapshot") if isinstance(session.get("task_snapshot"), dict) else {}
+    intent = session.get("intent_snapshot") if isinstance(session.get("intent_snapshot"), dict) else {}
+    title = _text_from_keys(task, ["title", "taskName", "name"], "未命名任务")
+    direction = _text_from_keys(task, ["direction", "taskDirection", "category"], "未填写")
+    description = _text_from_keys(task, ["description", "taskContent", "overview", "content"], "暂无任务描述")
+    objective = _text_from_keys(intent, ["objective", "goal"], "暂无意图结论")
+    constraints = intent.get("constraints") if isinstance(intent.get("constraints"), list) else []
+
+    lines = [
+        "# 岗位会商方案总结报告",
+        "",
+        f"生成时间：{now}",
+        "",
+        "## 一、任务概况",
+        "",
+        f"- 任务名称：{title}",
+        f"- 任务方向：{direction}",
+        f"- 任务描述：{description}",
+        "",
+        "## 二、意图理解",
+        "",
+        f"- 核心目标：{objective}",
+    ]
+    if constraints:
+        lines.append("- 关键约束：")
+        lines.extend(f"  - {item}" for item in constraints if isinstance(item, str) and item.strip())
+    lines.extend(["", "## 三、岗位交付汇总", ""])
+    for index, node in enumerate(_delivered_nodes(nodes), start=1):
+        agent_name, position_id = _seat_meta(session, node)
+        answer = _truncate_text(node.get("latest_answer"), 1_200) or "暂无文本回答"
+        lines.extend(
+            [
+                f"### {index}. {agent_name}",
+                "",
+                f"- 岗位：{position_id}",
+                f"- 节点版本：第 {node.get('revision', 0)} 版",
+                "",
+                answer,
+                "",
+            ]
+        )
+        artifacts = _artifact_lines(node)
+        if artifacts:
+            lines.extend(["产物文件：", *artifacts, ""])
+    lines.extend(
+        [
+            "## 四、综合判断",
+            "",
+            "本报告基于当前所有有效岗位交付产物自动汇总生成，可作为后续行动规划的输入材料。若任一前序岗位产物被驳回，本报告将自动标记为失效并需要重新生成。",
+        ]
+    )
+    return {
+        "kind": "summary",
+        "status": "done",
+        "title": "岗位会商方案总结报告",
+        "content": "\n".join(lines),
+        "generated_at": now,
+        "source_revisions": {node["node_key"]: node.get("revision", 0) for node in _delivered_nodes(nodes)},
+    }
+
+
+def _build_action_plan_snapshot(session: dict[str, Any], nodes: list[dict[str, Any]]) -> dict[str, Any]:
+    now = datetime.now(UTC).isoformat()
+    summary = session.get("summary_snapshot") if isinstance(session.get("summary_snapshot"), dict) else {}
+    delivered = _delivered_nodes(nodes)
+    tasks: list[dict[str, Any]] = []
+    for index, node in enumerate(delivered, start=1):
+        agent_name, position_id = _seat_meta(session, node)
+        tasks.append(
+            {
+                "id": f"subtask-{index:02d}",
+                "title": f"落实{agent_name}交付建议",
+                "owner_position": position_id,
+                "basis_node": node.get("node_key"),
+                "deliverable": f"{agent_name}整改/执行清单",
+                "acceptance": "补齐输入依据，形成可验证的阶段成果并回填岗位会商产物。",
+            }
+        )
+    lines = [
+        "# 岗位会商行动规划",
+        "",
+        f"生成时间：{now}",
+        "",
+        "## 一、规划依据",
+        "",
+        f"- 方案总结：{summary.get('title') or '岗位会商方案总结报告'}",
+        f"- 有效岗位产物数量：{len(delivered)}",
+        "",
+        "## 二、子任务拆解",
+        "",
+    ]
+    for task in tasks:
+        lines.extend(
+            [
+                f"### {task['id']} {task['title']}",
+                "",
+                f"- 建议责任岗位：{task['owner_position']}",
+                f"- 输入依据节点：{task['basis_node']}",
+                f"- 交付物：{task['deliverable']}",
+                f"- 验收标准：{task['acceptance']}",
+                "",
+            ]
+        )
+    lines.extend(
+        [
+            "## 三、执行提示",
+            "",
+            "若前序岗位产物被驳回，本行动规划会自动失效；请先完成被驳回节点及后续节点的重新交付，再重新生成行动规划。",
+        ]
+    )
+    return {
+        "kind": "action_plan",
+        "status": "done",
+        "title": "岗位会商行动规划",
+        "content": "\n".join(lines),
+        "generated_at": now,
+        "source_revisions": {node["node_key"]: node.get("revision", 0) for node in delivered},
+        "subtasks": tasks,
+    }
+
+
 def _artifact_refs(artifacts: Any) -> list[dict[str, Any]]:
     if not isinstance(artifacts, list):
         return []
@@ -342,6 +522,8 @@ async def _handoff_context(request: Request, session_id: str, node_key: str) ->
         raise HTTPException(status_code=404, detail="Position roundtable node not found")
     if current["status"] == "locked":
         raise HTTPException(status_code=409, detail="上游节点尚未完成，当前节点未解锁")
+    if current.get("invalidated_by"):
+        raise HTTPException(status_code=409, detail="上游产物已被驳回或重做，当前节点需等待前序节点重新完成")
 
     # Same-stage nodes are intentionally excluded. The business chain only
     # hands off completed previous stages, in stage/seat order.
@@ -350,7 +532,7 @@ async def _handoff_context(request: Request, session_id: str, node_key: str) ->
         node
         for node in nodes
         if node["stage_index"] < current["stage_index"]
-        and node["status"] in {"done", "stale"}
+        and node["status"] == "done"
     ]
     upstream_nodes: list[dict[str, Any]] = []
     for index, node in enumerate(upstream_candidates):
@@ -509,6 +691,8 @@ async def bind_node_thread(
         raise HTTPException(status_code=404, detail="Position roundtable node not found")
     if current["status"] == "locked":
         raise HTTPException(status_code=409, detail="上游节点尚未完成，当前节点未解锁")
+    if current.get("invalidated_by"):
+        raise HTTPException(status_code=409, detail="上游产物已被驳回或重做，当前节点需等待前序节点重新完成")
     if current.get("thread_id") and current["thread_id"] != body.thread_id:
         raise HTTPException(status_code=409, detail="该节点已绑定另一条对话线程")
     row = await store.update_node(
@@ -537,6 +721,8 @@ async def complete_node_turn(
         raise HTTPException(status_code=404, detail="Position roundtable node not found")
     if node["status"] == "locked":
         raise HTTPException(status_code=409, detail="上游节点尚未完成，当前节点未解锁")
+    if node.get("invalidated_by"):
+        raise HTTPException(status_code=409, detail="上游产物已被驳回或重做，当前节点需等待前序节点重新完成")
     row = await store.update_node(
         session_id,
         node_key,
@@ -545,6 +731,7 @@ async def complete_node_turn(
         latest_answer=body.latest_answer,
         artifact_manifest=body.artifact_manifest,
         upstream_revision=body.upstream_revision,
+        invalidated_by=None,
         increment_revision=True,
     )
     if row is None:
@@ -562,13 +749,19 @@ async def complete_node_turn(
         for downstream in nodes:
             if (
                 downstream["stage_index"] > row["stage_index"]
-                and downstream["status"] in {"ready", "running", "done", "stale"}
+                and downstream["status"] in {"ready", "running", "done", "stale", "rejected", "error"}
             ):
+                has_material = (
+                    downstream.get("revision", 0) > 0
+                    or bool(downstream.get("latest_answer"))
+                    or bool(downstream.get("artifact_manifest"))
+                )
                 await store.update_node(
                     session_id,
                     downstream["node_key"],
                     user_id,
-                    status="stale",
+                    status="stale" if has_material else "locked",
+                    invalidated_by=row["node_key"],
                 )
         nodes = await store.list_nodes(session_id, user_id) or []
 
@@ -579,16 +772,93 @@ async def complete_node_turn(
     if current_stage and all(item["status"] == "done" for item in current_stage) and later_stages:
         next_stage = later_stages[0]
         for next_node in nodes:
-            if next_node["stage_index"] == next_stage and next_node["status"] == "locked":
+            if next_node["stage_index"] == next_stage and next_node["status"] in {"locked", "stale"}:
                 await store.update_node(
                     session_id,
                     next_node["node_key"],
                     user_id,
-                    status="ready",
+                    status="ready" if next_node["status"] == "locked" else "stale",
+                    invalidated_by=None,
                 )
     return _project_node(row)
 
 
+@router.post("/sessions/{session_id}/nodes/{node_key}/reject", response_model=SessionDetailResponse)
+async def reject_node(
+    request: Request, session_id: str, node_key: str, body: RejectNodeRequest
+) -> SessionDetailResponse:
+    title = body.title.strip()
+    reason = body.reason.strip()
+    if not title or not reason:
+        raise HTTPException(status_code=400, detail="驳回标题和理由不能为空")
+    store, user_id, _ = await _require_writable_session(request, session_id)
+    current = await store.get_node(session_id, node_key, user_id)
+    if current is None:
+        raise HTTPException(status_code=404, detail="Position roundtable node not found")
+    if current["status"] == "locked":
+        raise HTTPException(status_code=409, detail="当前节点尚未解锁，暂无可驳回的交付产物")
+    if current.get("revision", 0) <= 0 and not current.get("latest_answer") and not current.get("artifact_manifest"):
+        raise HTTPException(status_code=409, detail="当前节点暂无可驳回的交付产物")
+    rejected = await store.reject_node(
+        session_id,
+        node_key,
+        user_id,
+        title=title,
+        reason=reason,
+        rejected_by=user_id,
+    )
+    if rejected is None:
+        raise HTTPException(status_code=404, detail="Position roundtable node not found")
+    row, node_rows = rejected
+    return SessionDetailResponse(**row, nodes=[_project_node(node) for node in node_rows])
+
+
+@router.post("/sessions/{session_id}/summary/start", response_model=SessionDetailResponse)
+async def start_summary(request: Request, session_id: str) -> SessionDetailResponse:
+    store, user_id, session = await _require_writable_session(request, session_id)
+    nodes = await store.list_nodes(session_id, user_id)
+    if nodes is None:
+        raise HTTPException(status_code=404, detail="Position roundtable session not found")
+    if not _all_nodes_delivered(nodes):
+        raise HTTPException(status_code=409, detail="所有岗位产物完成后才能生成方案总结")
+    snapshot = _build_summary_snapshot(session, nodes)
+    row = await store.update_session(
+        session_id,
+        user_id,
+        summary_snapshot=snapshot,
+        action_plan_snapshot=None,
+        status="active",
+    )
+    if row is None:
+        raise HTTPException(status_code=404, detail="Position roundtable session not found")
+    node_rows = await store.list_nodes(session_id, user_id) or []
+    return SessionDetailResponse(**row, nodes=[_project_node(node) for node in node_rows])
+
+
+@router.post("/sessions/{session_id}/action-plan/start", response_model=SessionDetailResponse)
+async def start_action_plan(request: Request, session_id: str) -> SessionDetailResponse:
+    store, user_id, session = await _require_writable_session(request, session_id)
+    nodes = await store.list_nodes(session_id, user_id)
+    if nodes is None:
+        raise HTTPException(status_code=404, detail="Position roundtable session not found")
+    if not _all_nodes_delivered(nodes):
+        raise HTTPException(status_code=409, detail="所有岗位产物完成后才能生成行动规划")
+    summary = session.get("summary_snapshot")
+    if not isinstance(summary, dict) or summary.get("status") != "done":
+        raise HTTPException(status_code=409, detail="请先生成有效的方案总结")
+    snapshot = _build_action_plan_snapshot(session, nodes)
+    row = await store.update_session(
+        session_id,
+        user_id,
+        action_plan_snapshot=snapshot,
+        status="completed",
+    )
+    if row is None:
+        raise HTTPException(status_code=404, detail="Position roundtable session not found")
+    node_rows = await store.list_nodes(session_id, user_id) or []
+    return SessionDetailResponse(**row, nodes=[_project_node(node) for node in node_rows])
+
+
 @router.get("/sessions/{session_id}/results", response_model=list[NodeResponse])
 async def list_results(request: Request, session_id: str) -> list[NodeResponse]:
     rows = await _get_store(request).list_results(session_id, _current_user_id(request))
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_02_position_roundtable_rejections.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_02_position_roundtable_rejections.py
new file mode 100644
index 00000000..eea6f562
--- /dev/null
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_02_position_roundtable_rejections.py
@@ -0,0 +1,54 @@
+"""Add rejection metadata to position roundtable nodes.
+
+Revision ID: 20260721_02
+Revises: 20260721_01
+Create Date: 2026-07-21
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+from sqlalchemy.dialects.mysql import LONGTEXT
+
+
+revision = "20260721_02"
+down_revision = "20260721_01"
+branch_labels = None
+depends_on = None
+
+
+def _has_table(table_name: str) -> bool:
+    return table_name in inspect(op.get_bind()).get_table_names()
+
+
+def _has_column(table_name: str, column_name: str) -> bool:
+    if not _has_table(table_name):
+        return False
+    return column_name in {column["name"] for column in inspect(op.get_bind()).get_columns(table_name)}
+
+
+def upgrade() -> None:
+    table = "position_roundtable_nodes"
+    if not _has_table(table):
+        return
+    long_text = LONGTEXT() if op.get_bind().dialect.name == "mysql" else sa.Text()
+    if not _has_column(table, "rejection_count"):
+        op.add_column(
+            table,
+            sa.Column("rejection_count", sa.Integer(), nullable=False, server_default="0"),
+        )
+    if not _has_column(table, "last_rejection"):
+        op.add_column(table, sa.Column("last_rejection", long_text, nullable=True))
+    if not _has_column(table, "invalidated_by"):
+        op.add_column(table, sa.Column("invalidated_by", sa.String(256), nullable=True))
+
+
+def downgrade() -> None:
+    table = "position_roundtable_nodes"
+    if not _has_table(table):
+        return
+    for column in ("invalidated_by", "last_rejection", "rejection_count"):
+        if _has_column(table, column):
+            op.drop_column(table, column)
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_03_position_roundtable_builtin_snapshots.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_03_position_roundtable_builtin_snapshots.py
new file mode 100644
index 00000000..22a1c27d
--- /dev/null
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/versions/20260721_03_position_roundtable_builtin_snapshots.py
@@ -0,0 +1,49 @@
+"""Add builtin summary/action-plan snapshots to position roundtable sessions.
+
+Revision ID: 20260721_03
+Revises: 20260721_02
+Create Date: 2026-07-21
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+from sqlalchemy.dialects.mysql import LONGTEXT
+
+
+revision = "20260721_03"
+down_revision = "20260721_02"
+branch_labels = None
+depends_on = None
+
+
+def _has_table(table_name: str) -> bool:
+    return table_name in inspect(op.get_bind()).get_table_names()
+
+
+def _has_column(table_name: str, column_name: str) -> bool:
+    if not _has_table(table_name):
+        return False
+    return column_name in {column["name"] for column in inspect(op.get_bind()).get_columns(table_name)}
+
+
+def upgrade() -> None:
+    table = "position_roundtable_sessions"
+    if not _has_table(table):
+        return
+    long_text = LONGTEXT() if op.get_bind().dialect.name == "mysql" else sa.Text()
+    if not _has_column(table, "summary_snapshot"):
+        op.add_column(table, sa.Column("summary_snapshot", long_text, nullable=True))
+    if not _has_column(table, "action_plan_snapshot"):
+        op.add_column(table, sa.Column("action_plan_snapshot", long_text, nullable=True))
+
+
+def downgrade() -> None:
+    table = "position_roundtable_sessions"
+    if not _has_table(table):
+        return
+    for column in ("action_plan_snapshot", "summary_snapshot"):
+        if _has_column(table, column):
+            op.drop_column(table, column)
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/model.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/model.py
index 3ca7a2a3..83638ac3 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/model.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/model.py
@@ -31,6 +31,8 @@ class PositionRoundtableSessionRow(Base):
     chain_snapshot: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
     intent_thread_id: Mapped[str | None] = mapped_column(String(128), nullable=True)
     intent_snapshot: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
+    summary_snapshot: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
+    action_plan_snapshot: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
     # intent_pending -> active -> completed / archived. The router owns legal
     # transitions; the DB keeps it as a concise, portable string.
     status: Mapped[str] = mapped_column(String(32), nullable=False, default="intent_pending", index=True)
@@ -66,12 +68,15 @@ class PositionRoundtableNodeRow(Base):
     position_id: Mapped[str | None] = mapped_column(String(64), nullable=True, index=True)
     # The real messages remain in the standard LangGraph/checkpoint store.
     thread_id: Mapped[str | None] = mapped_column(String(128), nullable=True, unique=True)
-    # locked / ready / running / done / stale / error
+    # locked / ready / running / done / stale / rejected / error
     status: Mapped[str] = mapped_column(String(32), nullable=False, default="locked", index=True)
     latest_answer: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
     artifact_manifest: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
     revision: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
     upstream_revision: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
+    rejection_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
+    last_rejection: Mapped[str | None] = mapped_column(PortableLongText, nullable=True)
+    invalidated_by: Mapped[str | None] = mapped_column(String(256), nullable=True)
     created_at: Mapped[datetime] = mapped_column(
         BeijingDateTime(), nullable=False, default=lambda: datetime.now(UTC)
     )
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/sql.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/sql.py
index 368d535f..3043b796 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/sql.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/position_roundtable/sql.py
@@ -37,6 +37,10 @@ def _time(value: Any) -> str | Any:
     return value.isoformat() if isinstance(value, datetime) else value
 
 
+def _has_material(row: PositionRoundtableNodeRow) -> bool:
+    return row.revision > 0 or bool(row.latest_answer) or bool(_loads(row.artifact_manifest))
+
+
 class PositionRoundtableRepository:
     def __init__(self, session_factory: async_sessionmaker[AsyncSession]) -> None:
         self._sf = session_factory
@@ -51,6 +55,8 @@ class PositionRoundtableRepository:
             "chain_snapshot": _loads(row.chain_snapshot),
             "intent_thread_id": row.intent_thread_id,
             "intent_snapshot": _loads(row.intent_snapshot),
+            "summary_snapshot": _loads(row.summary_snapshot),
+            "action_plan_snapshot": _loads(row.action_plan_snapshot),
             "status": row.status,
             "created_at": _time(row.created_at),
             "updated_at": _time(row.updated_at),
@@ -72,6 +78,9 @@ class PositionRoundtableRepository:
             "artifact_manifest": _loads(row.artifact_manifest) or [],
             "revision": row.revision,
             "upstream_revision": _loads(row.upstream_revision),
+            "rejection_count": row.rejection_count or 0,
+            "last_rejection": _loads(row.last_rejection),
+            "invalidated_by": row.invalidated_by,
             "created_at": _time(row.created_at),
             "updated_at": _time(row.updated_at),
         }
@@ -125,6 +134,8 @@ class PositionRoundtableRepository:
         task_snapshot: dict[str, Any] | object = _UNSET,
         intent_thread_id: str | None | object = _UNSET,
         intent_snapshot: dict[str, Any] | None | object = _UNSET,
+        summary_snapshot: dict[str, Any] | None | object = _UNSET,
+        action_plan_snapshot: dict[str, Any] | None | object = _UNSET,
         status: str | object = _UNSET,
     ) -> dict[str, Any] | None:
         async with self._sf() as session:
@@ -137,6 +148,10 @@ class PositionRoundtableRepository:
                 row.intent_thread_id = intent_thread_id or None
             if intent_snapshot is not _UNSET:
                 row.intent_snapshot = _dumps(intent_snapshot)
+            if summary_snapshot is not _UNSET:
+                row.summary_snapshot = _dumps(summary_snapshot)
+            if action_plan_snapshot is not _UNSET:
+                row.action_plan_snapshot = _dumps(action_plan_snapshot)
             if status is not _UNSET:
                 row.status = str(status)
             row.updated_at = datetime.now(UTC)
@@ -239,7 +254,10 @@ class PositionRoundtableRepository:
         latest_answer: str | None | object = _UNSET,
         artifact_manifest: list[dict[str, Any]] | object = _UNSET,
         upstream_revision: dict[str, Any] | object = _UNSET,
+        last_rejection: dict[str, Any] | None | object = _UNSET,
+        invalidated_by: str | None | object = _UNSET,
         increment_revision: bool = False,
+        increment_rejection: bool = False,
     ) -> dict[str, Any] | None:
         async with self._sf() as session:
             stmt = (
@@ -265,13 +283,100 @@ class PositionRoundtableRepository:
                 row.artifact_manifest = _dumps(artifact_manifest)
             if upstream_revision is not _UNSET:
                 row.upstream_revision = _dumps(upstream_revision)
+            if last_rejection is not _UNSET:
+                row.last_rejection = _dumps(last_rejection)
+            if invalidated_by is not _UNSET:
+                row.invalidated_by = invalidated_by or None
             if increment_revision:
                 row.revision += 1
+            if increment_rejection:
+                row.rejection_count += 1
             row.updated_at = datetime.now(UTC)
             await session.commit()
             await session.refresh(row)
             return self._node_dict(row)
 
+    async def reject_node(
+        self,
+        session_id: str,
+        node_key: str,
+        user_id: str,
+        *,
+        title: str,
+        reason: str,
+        rejected_by: str,
+    ) -> tuple[dict[str, Any], list[dict[str, Any]]] | None:
+        """Reject one delivered node and invalidate every later stage.
+
+        Historical answers and artifact manifests are deliberately preserved.
+        ``invalidated_by`` gates downstream rework until the rejected upstream
+        stage is completed again.
+        """
+        now = datetime.now(UTC)
+        async with self._sf() as session:
+            parent = await session.get(PositionRoundtableSessionRow, session_id)
+            if parent is None or parent.user_id != user_id:
+                return None
+            rows = (
+                await session.execute(
+                    select(PositionRoundtableNodeRow)
+                    .where(PositionRoundtableNodeRow.session_id == session_id)
+                    .order_by(PositionRoundtableNodeRow.stage_index, PositionRoundtableNodeRow.seat_index)
+                )
+            ).scalars().all()
+            target = next((row for row in rows if row.node_key == node_key), None)
+            if target is None:
+                return None
+
+            rejection = {
+                "title": title,
+                "reason": reason,
+                "rejected_by": rejected_by,
+                "rejected_at": now.isoformat(),
+            }
+            summary_snapshot = _loads(parent.summary_snapshot)
+            if isinstance(summary_snapshot, dict) and summary_snapshot.get("status") == "done":
+                summary_snapshot = {
+                    **summary_snapshot,
+                    "status": "stale",
+                    "invalidated_by": target.node_key,
+                    "invalidated_at": now.isoformat(),
+                }
+                parent.summary_snapshot = _dumps(summary_snapshot)
+            action_plan_snapshot = _loads(parent.action_plan_snapshot)
+            if isinstance(action_plan_snapshot, dict) and action_plan_snapshot.get("status") == "done":
+                action_plan_snapshot = {
+                    **action_plan_snapshot,
+                    "status": "stale",
+                    "invalidated_by": target.node_key,
+                    "invalidated_at": now.isoformat(),
+                }
+                parent.action_plan_snapshot = _dumps(action_plan_snapshot)
+            if parent.status == "completed":
+                parent.status = "active"
+            target.status = "rejected"
+            target.last_rejection = _dumps(rejection)
+            target.rejection_count += 1
+            target.invalidated_by = None
+            target.updated_at = now
+
+            for row in rows:
+                if row.stage_index <= target.stage_index:
+                    continue
+                if _has_material(row) or row.status in {"running", "done", "stale", "rejected", "error"}:
+                    row.status = "stale"
+                else:
+                    row.status = "locked"
+                row.invalidated_by = target.node_key
+                row.updated_at = now
+
+            parent.updated_at = now
+            await session.commit()
+            await session.refresh(parent)
+            for row in rows:
+                await session.refresh(row)
+            return self._session_dict(parent), [self._node_dict(row) for row in rows]
+
     async def archive_session(self, session_id: str, user_id: str) -> dict[str, Any] | None:
         return await self.update_session(session_id, user_id, status="archived")
 
diff --git a/offline-backend-20260512/backend/tests/test_position_roundtable_sessions.py b/offline-backend-20260512/backend/tests/test_position_roundtable_sessions.py
index a0ea1335..aecdea17 100644
--- a/offline-backend-20260512/backend/tests/test_position_roundtable_sessions.py
+++ b/offline-backend-20260512/backend/tests/test_position_roundtable_sessions.py
@@ -139,6 +139,176 @@ async def test_node_updates_are_user_scoped_and_keep_thread_out_of_messages(stor
     assert await store.get_node(created["id"], nodes[0]["node_key"], "user-b") is None
 
 
+@pytest.mark.asyncio
+async def test_reject_node_marks_current_and_invalidates_later_stages(store):
+    created = await store.create_session("user-a", external_task_id=None, task_snapshot={})
+    _, nodes = await store.activate_session(
+        created["id"],
+        "user-a",
+        chain_id="chain-a",
+        chain_snapshot={"id": "chain-a"},
+        nodes=[
+            {
+                "node_key": "stage-1-seat-1-agent-a",
+                "stage_index": 0,
+                "seat_index": 0,
+                "agent_id": "agent-a",
+                "position_id": "planning",
+                "status": "ready",
+            },
+            {
+                "node_key": "stage-2-seat-1-agent-b",
+                "stage_index": 1,
+                "seat_index": 0,
+                "agent_id": "agent-b",
+                "position_id": "solution",
+                "status": "ready",
+            },
+            {
+                "node_key": "stage-3-seat-1-agent-c",
+                "stage_index": 2,
+                "seat_index": 0,
+                "agent_id": "agent-c",
+                "position_id": "command",
+                "status": "ready",
+            },
+        ],
+    )
+    await store.update_node(
+        created["id"],
+        nodes[0]["node_key"],
+        "user-a",
+        status="done",
+        latest_answer="第一阶段产物",
+        increment_revision=True,
+    )
+    await store.update_node(
+        created["id"],
+        nodes[1]["node_key"],
+        "user-a",
+        status="done",
+        latest_answer="第二阶段产物",
+        increment_revision=True,
+    )
+
+    rejected = await store.reject_node(
+        created["id"],
+        nodes[0]["node_key"],
+        "user-a",
+        title="依据不足",
+        reason="第一阶段判断依据需要补充。",
+        rejected_by="user-a",
+    )
+
+    assert rejected is not None
+    _, rejected_nodes = rejected
+    by_key = {node["node_key"]: node for node in rejected_nodes}
+    first = by_key[nodes[0]["node_key"]]
+    second = by_key[nodes[1]["node_key"]]
+    third = by_key[nodes[2]["node_key"]]
+    assert first["status"] == "rejected"
+    assert first["rejection_count"] == 1
+    assert first["last_rejection"]["title"] == "依据不足"
+    assert first["invalidated_by"] is None
+    assert second["status"] == "stale"
+    assert second["latest_answer"] == "第二阶段产物"
+    assert second["invalidated_by"] == nodes[0]["node_key"]
+    assert third["status"] == "locked"
+    assert third["invalidated_by"] == nodes[0]["node_key"]
+
+
+@pytest.mark.asyncio
+async def test_builtin_summary_and_action_plan_snapshots_are_invalidated_by_reject(store):
+    created = await store.create_session(
+        "user-a",
+        external_task_id=None,
+        task_snapshot={
+            "title": "测试任务",
+            "description": "形成协同方案",
+            "direction": "态势研判",
+        },
+    )
+    await store.update_session(
+        created["id"],
+        "user-a",
+        intent_snapshot={"objective": "明确处置意图", "constraints": ["时间紧"]},
+    )
+    chain = {
+        "id": "chain-a",
+        "seats": [
+            {"agent_id": "agent-a", "name": "研判智能体", "position_id": "planning"},
+            {"agent_id": "agent-b", "name": "处置智能体", "position_id": "solution"},
+        ],
+    }
+    _, nodes = await store.activate_session(
+        created["id"],
+        "user-a",
+        chain_id="chain-a",
+        chain_snapshot=chain,
+        nodes=[
+            {
+                "node_key": "stage-1-seat-1-agent-a",
+                "stage_index": 0,
+                "seat_index": 0,
+                "agent_id": "agent-a",
+                "position_id": "planning",
+                "status": "ready",
+            },
+            {
+                "node_key": "stage-2-seat-1-agent-b",
+                "stage_index": 1,
+                "seat_index": 0,
+                "agent_id": "agent-b",
+                "position_id": "solution",
+                "status": "ready",
+            },
+        ],
+    )
+    for node in nodes:
+        await store.update_node(
+            created["id"],
+            node["node_key"],
+            "user-a",
+            status="done",
+            latest_answer=f"{node['agent_id']} 产物",
+            increment_revision=True,
+        )
+    session = await store.get_session(created["id"], "user-a")
+    assert session is not None
+    nodes = await store.list_nodes(created["id"], "user-a") or []
+    summary = position_roundtable_router._build_summary_snapshot(session, nodes)
+    assert "岗位会商方案总结报告" in summary["content"]
+    assert "研判智能体" in summary["content"]
+    session = await store.update_session(created["id"], "user-a", summary_snapshot=summary)
+    assert session is not None
+    action_plan = position_roundtable_router._build_action_plan_snapshot(session, nodes)
+    session = await store.update_session(
+        created["id"],
+        "user-a",
+        action_plan_snapshot=action_plan,
+        status="completed",
+    )
+    assert session is not None
+    assert session["summary_snapshot"]["status"] == "done"
+    assert session["action_plan_snapshot"]["status"] == "done"
+
+    rejected = await store.reject_node(
+        created["id"],
+        nodes[0]["node_key"],
+        "user-a",
+        title="重做第一阶段",
+        reason="前序依据变化",
+        rejected_by="user-a",
+    )
+    assert rejected is not None
+    rejected_session, _ = rejected
+    assert rejected_session["status"] == "active"
+    assert rejected_session["summary_snapshot"]["status"] == "stale"
+    assert rejected_session["summary_snapshot"]["invalidated_by"] == nodes[0]["node_key"]
+    assert rejected_session["action_plan_snapshot"]["status"] == "stale"
+    assert rejected_session["action_plan_snapshot"]["invalidated_by"] == nodes[0]["node_key"]
+
+
 @pytest.mark.asyncio
 async def test_handoff_context_inlines_only_upstream_thread_text_artifacts(tmp_path, monkeypatch):
     artifact = tmp_path / "handoff.md"
@@ -188,6 +358,18 @@ async def test_handoff_context_inlines_only_upstream_thread_text_artifacts(tmp_p
                     "latest_answer": None,
                     "artifact_manifest": [],
                 },
+                {
+                    "node_key": "stage-1-seat-2-agent-stale",
+                    "stage_index": 0,
+                    "seat_index": 1,
+                    "agent_id": "agent-stale",
+                    "position_id": "planning",
+                    "thread_id": "stale-thread",
+                    "status": "stale",
+                    "revision": 1,
+                    "latest_answer": "失效上游产物",
+                    "artifact_manifest": [],
+                },
             ]
 
     async def resolve(thread_id: str, path: str):
@@ -207,6 +389,7 @@ async def test_handoff_context_inlines_only_upstream_thread_text_artifacts(tmp_p
     )
 
     upstream = context["upstream_nodes"][0]
+    assert len(context["upstream_nodes"]) == 1
     assert upstream["latest_answer"] == "上游问答结果"
     assert upstream["artifacts"][0]["content"] == "上游产物正文：可供下一岗位直接参考。"
     assert "content" not in upstream["artifacts"][1]