feat(position-roundtable): add delivery rejection workflow

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);
+}

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