diff --git a/ui/src/components/IssueChatThread.tsx b/ui/src/components/IssueChatThread.tsx
index 3febbc05ae8..32512224550 100644
--- a/ui/src/components/IssueChatThread.tsx
+++ b/ui/src/components/IssueChatThread.tsx
@@ -45,6 +45,13 @@ import {
   type IssueChatTranscriptEntry,
   type SegmentTiming,
 } from "../lib/issue-chat-messages";
+import type {
+  AskUserQuestionsAnswer,
+  AskUserQuestionsInteraction,
+  IssueThreadInteraction,
+  SuggestTasksInteraction,
+} from "../lib/issue-thread-interactions";
+import { isIssueThreadInteraction } from "../lib/issue-thread-interactions";
 import { resolveIssueChatTranscriptRuns } from "../lib/issueChatTranscriptRuns";
 import type { IssueTimelineAssignee, IssueTimelineEvent } from "../lib/issue-timeline-events";
 import { Button } from "@/components/ui/button";
@@ -67,6 +74,7 @@ import { MarkdownBody } from "./MarkdownBody";
 import { MarkdownEditor, type MentionOption, type MarkdownEditorRef } from "./MarkdownEditor";
 import { Identity } from "./Identity";
 import { InlineEntitySelector, type InlineEntityOption } from "./InlineEntitySelector";
+import { IssueThreadInteractionCard } from "./IssueThreadInteractionCard";
 import { AgentIcon } from "./AgentIconPicker";
 import { restoreSubmittedCommentDraft } from "../lib/comment-submit-draft";
 import {
@@ -114,6 +122,15 @@ interface IssueChatMessageContext {
   onCancelQueued?: (commentId: string) => void;
   interruptingQueuedRunId?: string | null;
   onImageClick?: (src: string) => void;
+  onAcceptInteraction?: (interaction: SuggestTasksInteraction) => Promise<void> | void;
+  onRejectInteraction?: (
+    interaction: SuggestTasksInteraction,
+    reason?: string,
+  ) => Promise<void> | void;
+  onSubmitInteractionAnswers?: (
+    interaction: AskUserQuestionsInteraction,
+    answers: AskUserQuestionsAnswer[],
+  ) => Promise<void> | void;
 }
 
 const IssueChatCtx = createContext<IssueChatMessageContext>({
@@ -211,6 +228,7 @@ interface IssueChatComposerProps {
 
 interface IssueChatThreadProps {
   comments: IssueChatComment[];
+  interactions?: IssueThreadInteraction[];
   feedbackVotes?: FeedbackVote[];
   feedbackDataSharingPreference?: FeedbackDataSharingPreference;
   feedbackTermsUrl?: string | null;
@@ -256,6 +274,15 @@ interface IssueChatThreadProps {
   interruptingQueuedRunId?: string | null;
   stoppingRunId?: string | null;
   onImageClick?: (src: string) => void;
+  onAcceptInteraction?: (interaction: SuggestTasksInteraction) => Promise<void> | void;
+  onRejectInteraction?: (
+    interaction: SuggestTasksInteraction,
+    reason?: string,
+  ) => Promise<void> | void;
+  onSubmitInteractionAnswers?: (
+    interaction: AskUserQuestionsInteraction,
+    answers: AskUserQuestionsAnswer[],
+  ) => Promise<void> | void;
   composerRef?: Ref<IssueChatComposerHandle>;
 }
 
@@ -1698,7 +1725,14 @@ function IssueChatFeedbackButtons({
 }
 
 function IssueChatSystemMessage({ message }: { message: ThreadMessage }) {
-  const { agentMap, currentUserId, userLabelMap } = useContext(IssueChatCtx);
+  const {
+    agentMap,
+    currentUserId,
+    userLabelMap,
+    onAcceptInteraction,
+    onRejectInteraction,
+    onSubmitInteractionAnswers,
+  } = useContext(IssueChatCtx);
   const custom = message.metadata.custom as Record<string, unknown>;
   const anchorId = typeof custom.anchorId === "string" ? custom.anchorId : undefined;
   const runId = typeof custom.runId === "string" ? custom.runId : null;
@@ -1717,6 +1751,27 @@ function IssueChatSystemMessage({ message }: { message: ThreadMessage }) {
         to: IssueTimelineAssignee;
       }
     : null;
+  const interaction = isIssueThreadInteraction(custom.interaction)
+    ? custom.interaction
+    : null;
+
+  if (custom.kind === "interaction" && interaction) {
+    return (
+      <div id={anchorId}>
+        <div className="py-1.5">
+          <IssueThreadInteractionCard
+            interaction={interaction}
+            agentMap={agentMap}
+            currentUserId={currentUserId}
+            userLabelMap={userLabelMap}
+            onAcceptInteraction={onAcceptInteraction}
+            onRejectInteraction={onRejectInteraction}
+            onSubmitInteractionAnswers={onSubmitInteractionAnswers}
+          />
+        </div>
+      </div>
+    );
+  }
 
   if (custom.kind === "event" && actorName) {
     const isCurrentUser = actorType === "user" && !!currentUserId && actorId === currentUserId;
@@ -2077,6 +2132,7 @@ const IssueChatComposer = forwardRef<IssueChatComposerHandle, IssueChatComposerP
 
 export function IssueChatThread({
   comments,
+  interactions = [],
   feedbackVotes = [],
   feedbackDataSharingPreference = "prompt",
   feedbackTermsUrl = null,
@@ -2118,6 +2174,9 @@ export function IssueChatThread({
   interruptingQueuedRunId = null,
   stoppingRunId = null,
   onImageClick,
+  onAcceptInteraction,
+  onRejectInteraction,
+  onSubmitInteractionAnswers,
   composerRef,
 }: IssueChatThreadProps) {
   const location = useLocation();
@@ -2173,6 +2232,7 @@ export function IssueChatThread({
     () =>
       buildIssueChatMessages({
         comments,
+        interactions,
         timelineEvents,
         linkedRuns,
         liveRuns,
@@ -2188,6 +2248,7 @@ export function IssueChatThread({
       }),
     [
       comments,
+      interactions,
       timelineEvents,
       linkedRuns,
       liveRuns,
@@ -2256,7 +2317,14 @@ export function IssueChatThread({
 
   useEffect(() => {
     const hash = location.hash;
-    if (!(hash.startsWith("#comment-") || hash.startsWith("#activity-") || hash.startsWith("#run-"))) return;
+    if (
+      !(
+        hash.startsWith("#comment-")
+        || hash.startsWith("#activity-")
+        || hash.startsWith("#run-")
+        || hash.startsWith("#interaction-")
+      )
+    ) return;
     if (messages.length === 0 || hasScrolledRef.current) return;
     const targetId = hash.slice(1);
     const element = document.getElementById(targetId);
@@ -2286,6 +2354,9 @@ export function IssueChatThread({
       onCancelQueued,
       interruptingQueuedRunId,
       onImageClick,
+      onAcceptInteraction,
+      onRejectInteraction,
+      onSubmitInteractionAnswers,
     }),
     [
       feedbackVoteByTargetId,
@@ -2303,6 +2374,9 @@ export function IssueChatThread({
       onCancelQueued,
       interruptingQueuedRunId,
       onImageClick,
+      onAcceptInteraction,
+      onRejectInteraction,
+      onSubmitInteractionAnswers,
     ],
   );
 
diff --git a/ui/src/components/IssueThreadInteractionCard.tsx b/ui/src/components/IssueThreadInteractionCard.tsx
new file mode 100644
index 00000000000..0227fa939d9
--- /dev/null
+++ b/ui/src/components/IssueThreadInteractionCard.tsx
@@ -0,0 +1,743 @@
+import { useEffect, useMemo, useState } from "react";
+import type { Agent } from "@paperclipai/shared";
+import { AlertTriangle, CheckCircle2, ChevronRight, CircleDashed, GitBranch, ListChecks, Loader2, MessageSquareQuote, Sparkles, XCircle } from "lucide-react";
+import { Link } from "@/lib/router";
+import { formatAssigneeUserLabel } from "../lib/assignees";
+import {
+  buildSuggestedTaskTree,
+  countSuggestedTaskNodes,
+  getQuestionAnswerLabels,
+  type AskUserQuestionsAnswer,
+  type AskUserQuestionsInteraction,
+  type IssueThreadInteraction,
+  type SuggestTasksInteraction,
+  type SuggestTasksResultCreatedTask,
+  type SuggestedTaskDraft,
+  type SuggestedTaskTreeNode,
+} from "../lib/issue-thread-interactions";
+import { cn, formatDateTime, formatShortDate } from "../lib/utils";
+import { MarkdownBody } from "./MarkdownBody";
+import { Button } from "./ui/button";
+import { Textarea } from "./ui/textarea";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
+
+interface IssueThreadInteractionCardProps {
+  interaction: IssueThreadInteraction;
+  agentMap?: Map<string, Agent>;
+  currentUserId?: string | null;
+  userLabelMap?: ReadonlyMap<string, string> | null;
+  onAcceptInteraction?: (interaction: SuggestTasksInteraction) => Promise<void> | void;
+  onRejectInteraction?: (
+    interaction: SuggestTasksInteraction,
+    reason?: string,
+  ) => Promise<void> | void;
+  onSubmitInteractionAnswers?: (
+    interaction: AskUserQuestionsInteraction,
+    answers: AskUserQuestionsAnswer[],
+  ) => Promise<void> | void;
+}
+
+function resolveActorLabel(args: {
+  agentId?: string | null;
+  userId?: string | null;
+  agentMap?: Map<string, Agent>;
+  currentUserId?: string | null;
+  userLabelMap?: ReadonlyMap<string, string> | null;
+}) {
+  const { agentId, userId, agentMap, currentUserId, userLabelMap } = args;
+  if (agentId) {
+    return agentMap?.get(agentId)?.name ?? agentId.slice(0, 8);
+  }
+  if (userId) {
+    return formatAssigneeUserLabel(userId, currentUserId, userLabelMap) ?? "Board";
+  }
+  return "Unknown";
+}
+
+function statusLabel(status: IssueThreadInteraction["status"]) {
+  switch (status) {
+    case "pending":
+      return "Pending";
+    case "accepted":
+      return "Accepted";
+    case "rejected":
+      return "Rejected";
+    case "answered":
+      return "Answered";
+    case "expired":
+      return "Expired";
+    case "failed":
+      return "Failed";
+    default:
+      return status;
+  }
+}
+
+function statusIcon(status: IssueThreadInteraction["status"]) {
+  switch (status) {
+    case "accepted":
+    case "answered":
+      return CheckCircle2;
+    case "rejected":
+    case "failed":
+      return XCircle;
+    case "expired":
+      return AlertTriangle;
+    default:
+      return CircleDashed;
+  }
+}
+
+function statusClasses(status: IssueThreadInteraction["status"]) {
+  switch (status) {
+    case "accepted":
+    case "answered":
+      return {
+        shell: "border-emerald-300/70 bg-[linear-gradient(145deg,rgba(16,185,129,0.14),rgba(255,255,255,0.96)_42%,rgba(6,182,212,0.08))]",
+        badge: "border-emerald-400/60 bg-emerald-100/80 text-emerald-950",
+      };
+    case "rejected":
+      return {
+        shell: "border-rose-300/70 bg-[linear-gradient(145deg,rgba(244,63,94,0.12),rgba(255,255,255,0.96)_42%,rgba(251,191,36,0.08))]",
+        badge: "border-rose-400/60 bg-rose-100/85 text-rose-950",
+      };
+    case "failed":
+    case "expired":
+      return {
+        shell: "border-amber-300/70 bg-[linear-gradient(145deg,rgba(245,158,11,0.14),rgba(255,255,255,0.96)_42%,rgba(148,163,184,0.08))]",
+        badge: "border-amber-400/60 bg-amber-100/85 text-amber-950",
+      };
+    default:
+      return {
+        shell: "border-sky-300/70 bg-[linear-gradient(145deg,rgba(14,165,233,0.10),rgba(255,255,255,0.96)_42%,rgba(250,204,21,0.08))]",
+        badge: "border-sky-400/60 bg-sky-100/85 text-sky-950",
+      };
+  }
+}
+
+function TaskField({
+  label,
+  value,
+  tone = "default",
+}: {
+  label: string;
+  value: string;
+  tone?: "default" | "subtle";
+}) {
+  return (
+    <span
+      className={cn(
+        "inline-flex items-center rounded-full border px-2 py-0.5 text-[10px] font-medium uppercase tracking-[0.16em]",
+        tone === "default"
+          ? "border-border/70 bg-background/80 text-foreground/75"
+          : "border-border/60 bg-background/60 text-muted-foreground",
+      )}
+    >
+      {label}: {value}
+    </span>
+  );
+}
+
+function createdTaskMap(
+  createdTasks: readonly SuggestTasksResultCreatedTask[] | undefined,
+) {
+  return new Map(
+    (createdTasks ?? []).map((entry) => [entry.clientKey, entry] as const),
+  );
+}
+
+function TaskTreeNode({
+  node,
+  createdByClientKey,
+  agentMap,
+  currentUserId,
+  userLabelMap,
+  depth = 0,
+}: {
+  node: SuggestedTaskTreeNode;
+  createdByClientKey: ReadonlyMap<string, SuggestTasksResultCreatedTask>;
+  agentMap?: Map<string, Agent>;
+  currentUserId?: string | null;
+  userLabelMap?: ReadonlyMap<string, string> | null;
+  depth?: number;
+}) {
+  const visibleChildren = node.children.filter((child) => !child.task.hiddenInPreview);
+  const hiddenChildCount = node.children
+    .filter((child) => child.task.hiddenInPreview)
+    .reduce((sum, child) => sum + countSuggestedTaskNodes(child), 0);
+  const createdTask = createdByClientKey.get(node.task.clientKey);
+  const assigneeLabel = resolveActorLabel({
+    agentId: node.task.assigneeAgentId,
+    userId: node.task.assigneeUserId,
+    agentMap,
+    currentUserId,
+    userLabelMap,
+  });
+  const hasExplicitAssignee = Boolean(
+    node.task.assigneeAgentId || node.task.assigneeUserId,
+  );
+
+  return (
+    <div className="space-y-3">
+      <div
+        className={cn(
+          "rounded-2xl border border-border/70 bg-background/80 p-4 shadow-[0_18px_48px_rgba(15,23,42,0.08)]",
+          depth > 0 && "ml-4 border-dashed shadow-none",
+        )}
+      >
+        <div className="flex flex-wrap items-start justify-between gap-3">
+          <div className="min-w-0 flex-1">
+            <div className="flex items-center gap-2">
+              <span className="inline-flex h-7 w-7 items-center justify-center rounded-full border border-sky-300/70 bg-sky-100/80 text-sky-900">
+                <Sparkles className="h-3.5 w-3.5" />
+              </span>
+              <div className="min-w-0">
+                <div className="text-sm font-semibold text-foreground">
+                  {node.task.title}
+                </div>
+                {node.task.description ? (
+                  <p className="mt-1 text-sm leading-6 text-muted-foreground">
+                    {node.task.description}
+                  </p>
+                ) : null}
+              </div>
+            </div>
+          </div>
+
+          {createdTask?.issueId ? (
+            <Link
+              to={`/issues/${createdTask.identifier ?? createdTask.issueId}`}
+              className="inline-flex items-center gap-1 rounded-full border border-emerald-400/50 bg-emerald-100/80 px-2.5 py-1 text-[11px] font-medium text-emerald-950 transition-colors hover:bg-emerald-200/80"
+            >
+              {createdTask.identifier ?? createdTask.issueId.slice(0, 8)}
+              <ChevronRight className="h-3 w-3" />
+            </Link>
+          ) : null}
+        </div>
+
+        <div className="mt-3 flex flex-wrap gap-2">
+          {node.task.priority ? (
+            <TaskField label="Priority" value={node.task.priority} />
+          ) : null}
+          {hasExplicitAssignee ? (
+            <TaskField label="Assignee" value={assigneeLabel} />
+          ) : null}
+          {node.task.billingCode ? (
+            <TaskField label="Billing" value={node.task.billingCode} />
+          ) : null}
+          {node.task.projectId ? (
+            <TaskField label="Project" value={node.task.projectId} tone="subtle" />
+          ) : null}
+          {(node.task.labels ?? []).map((label) => (
+            <TaskField key={label} label="Label" value={label} tone="subtle" />
+          ))}
+        </div>
+
+        {hiddenChildCount > 0 ? (
+          <div className="mt-3 flex items-center gap-2 rounded-xl border border-amber-300/60 bg-amber-50/85 px-3 py-2 text-xs text-amber-900">
+            <GitBranch className="h-3.5 w-3.5 shrink-0" />
+            <span>
+              {hiddenChildCount === 1
+                ? "1 follow-on task hidden in preview"
+                : `${hiddenChildCount} follow-on tasks hidden in preview`}
+            </span>
+          </div>
+        ) : null}
+      </div>
+
+      {visibleChildren.length > 0 ? (
+        <div className="space-y-3 border-l border-dashed border-border/70 pl-4">
+          {visibleChildren.map((child) => (
+            <TaskTreeNode
+              key={child.task.clientKey}
+              node={child}
+              createdByClientKey={createdByClientKey}
+              agentMap={agentMap}
+              currentUserId={currentUserId}
+              userLabelMap={userLabelMap}
+              depth={depth + 1}
+            />
+          ))}
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+function SuggestTasksCard({
+  interaction,
+  agentMap,
+  currentUserId,
+  userLabelMap,
+  onAcceptInteraction,
+  onRejectInteraction,
+}: {
+  interaction: SuggestTasksInteraction;
+  agentMap?: Map<string, Agent>;
+  currentUserId?: string | null;
+  userLabelMap?: ReadonlyMap<string, string> | null;
+  onAcceptInteraction?: (interaction: SuggestTasksInteraction) => Promise<void> | void;
+  onRejectInteraction?: (
+    interaction: SuggestTasksInteraction,
+    reason?: string,
+  ) => Promise<void> | void;
+}) {
+  const [rejecting, setRejecting] = useState(false);
+  const [working, setWorking] = useState<"accept" | "reject" | null>(null);
+  const [rejectReason, setRejectReason] = useState(
+    interaction.result?.rejectionReason ?? "",
+  );
+
+  useEffect(() => {
+    setRejectReason(interaction.result?.rejectionReason ?? "");
+    if (interaction.status !== "pending") {
+      setRejecting(false);
+      setWorking(null);
+    }
+  }, [interaction.result?.rejectionReason, interaction.status]);
+
+  const roots = useMemo(
+    () =>
+      buildSuggestedTaskTree(interaction.payload.tasks).filter(
+        (node) => !node.task.hiddenInPreview,
+      ),
+    [interaction.payload.tasks],
+  );
+  const createdByClientKey = useMemo(
+    () => createdTaskMap(interaction.result?.createdTasks),
+    [interaction.result?.createdTasks],
+  );
+  const totalTasks = interaction.payload.tasks.length;
+
+  async function handleAccept() {
+    if (!onAcceptInteraction) return;
+    setWorking("accept");
+    try {
+      await onAcceptInteraction(interaction);
+    } finally {
+      setWorking(null);
+    }
+  }
+
+  async function handleReject() {
+    if (!onRejectInteraction) return;
+    setWorking("reject");
+    try {
+      await onRejectInteraction(interaction, rejectReason.trim() || undefined);
+      setRejecting(false);
+    } finally {
+      setWorking(null);
+    }
+  }
+
+  return (
+    <div className="space-y-4">
+      <div className="flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
+        <span className="inline-flex items-center gap-1 rounded-full border border-border/70 bg-background/70 px-2.5 py-1 font-medium uppercase tracking-[0.16em] text-foreground/70">
+          <Sparkles className="h-3 w-3" />
+          Suggested tasks
+        </span>
+        <span>{totalTasks === 1 ? "1 draft issue" : `${totalTasks} draft issues`}</span>
+        {interaction.payload.defaultParentId ? (
+          <TaskField label="Default parent" value={interaction.payload.defaultParentId} tone="subtle" />
+        ) : null}
+      </div>
+
+      <div className="space-y-3">
+        {roots.map((root) => (
+          <TaskTreeNode
+            key={root.task.clientKey}
+            node={root}
+            createdByClientKey={createdByClientKey}
+            agentMap={agentMap}
+            currentUserId={currentUserId}
+            userLabelMap={userLabelMap}
+          />
+        ))}
+      </div>
+
+      {interaction.status === "rejected" && interaction.result?.rejectionReason ? (
+        <div className="rounded-2xl border border-rose-300/60 bg-rose-50/85 px-4 py-3 text-sm text-rose-950">
+          <div className="text-[11px] font-semibold uppercase tracking-[0.16em] text-rose-700">
+            Rejection reason
+          </div>
+          <p className="mt-1 leading-6">{interaction.result.rejectionReason}</p>
+        </div>
+      ) : null}
+
+      {interaction.status === "pending" ? (
+        <div className="rounded-2xl border border-border/70 bg-background/75 p-4">
+          <div className="flex flex-wrap items-center gap-2">
+            <Button
+              size="sm"
+              disabled={!onAcceptInteraction || working !== null}
+              onClick={() => void handleAccept()}
+            >
+              {working === "accept" ? (
+                <>
+                  <Loader2 className="mr-2 h-3.5 w-3.5 animate-spin" />
+                  Accepting...
+                </>
+              ) : (
+                "Accept drafts"
+              )}
+            </Button>
+            <Button
+              size="sm"
+              variant="outline"
+              disabled={!onRejectInteraction || working !== null}
+              onClick={() => setRejecting((current) => !current)}
+            >
+              Reject
+            </Button>
+          </div>
+
+          {rejecting ? (
+            <div className="mt-3 space-y-3">
+              <Textarea
+                value={rejectReason}
+                onChange={(event) => setRejectReason(event.target.value)}
+                placeholder="Add a short reason for rejecting this suggestion"
+                className="min-h-24 bg-background text-sm"
+              />
+              <div className="flex justify-end">
+                <Button
+                  size="sm"
+                  variant="outline"
+                  disabled={!onRejectInteraction || working !== null}
+                  onClick={() => void handleReject()}
+                >
+                  {working === "reject" ? (
+                    <>
+                      <Loader2 className="mr-2 h-3.5 w-3.5 animate-spin" />
+                      Saving...
+                    </>
+                  ) : (
+                    "Save rejection"
+                  )}
+                </Button>
+              </div>
+            </div>
+          ) : null}
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+function QuestionOptionButton({
+  label,
+  description,
+  selected,
+  onClick,
+}: {
+  label: string;
+  description?: string | null;
+  selected: boolean;
+  onClick: () => void;
+}) {
+  return (
+    <button
+      type="button"
+      className={cn(
+        "w-full rounded-2xl border px-4 py-3 text-left transition-colors",
+        selected
+          ? "border-sky-400/70 bg-sky-50/90 shadow-[0_14px_36px_rgba(14,165,233,0.14)]"
+          : "border-border/70 bg-background/80 hover:border-sky-300/60 hover:bg-sky-50/60",
+      )}
+      onClick={onClick}
+    >
+      <div className="text-sm font-medium text-foreground">{label}</div>
+      {description ? (
+        <div className="mt-1 text-sm leading-6 text-muted-foreground">
+          {description}
+        </div>
+      ) : null}
+    </button>
+  );
+}
+
+function AskUserQuestionsCard({
+  interaction,
+  onSubmitInteractionAnswers,
+}: {
+  interaction: AskUserQuestionsInteraction;
+  onSubmitInteractionAnswers?: (
+    interaction: AskUserQuestionsInteraction,
+    answers: AskUserQuestionsAnswer[],
+  ) => Promise<void> | void;
+}) {
+  const [draftAnswers, setDraftAnswers] = useState<Record<string, string[]>>(() =>
+    Object.fromEntries(
+      (interaction.result?.answers ?? []).map((answer) => [
+        answer.questionId,
+        [...answer.optionIds],
+      ]),
+    ),
+  );
+  const [working, setWorking] = useState(false);
+
+  useEffect(() => {
+    setDraftAnswers(
+      Object.fromEntries(
+        (interaction.result?.answers ?? []).map((answer) => [
+          answer.questionId,
+          [...answer.optionIds],
+        ]),
+      ),
+    );
+  }, [interaction.result?.answers]);
+
+  const questions = interaction.payload.questions;
+  const requiredQuestions = questions.filter((question) => question.required);
+  const canSubmit = requiredQuestions.every(
+    (question) => (draftAnswers[question.id] ?? []).length > 0,
+  );
+
+  function toggleOption(questionId: string, optionId: string, selectionMode: "single" | "multi") {
+    setDraftAnswers((current) => {
+      const existing = current[questionId] ?? [];
+      if (selectionMode === "single") {
+        return { ...current, [questionId]: [optionId] };
+      }
+      const next = existing.includes(optionId)
+        ? existing.filter((value) => value !== optionId)
+        : [...existing, optionId];
+      return { ...current, [questionId]: next };
+    });
+  }
+
+  async function handleSubmit() {
+    if (!onSubmitInteractionAnswers || !canSubmit) return;
+    setWorking(true);
+    try {
+      await onSubmitInteractionAnswers(
+        interaction,
+        questions.map((question) => ({
+          questionId: question.id,
+          optionIds: draftAnswers[question.id] ?? [],
+        })),
+      );
+    } finally {
+      setWorking(false);
+    }
+  }
+
+  return (
+    <div className="space-y-4">
+      <div className="flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
+        <span className="inline-flex items-center gap-1 rounded-full border border-border/70 bg-background/70 px-2.5 py-1 font-medium uppercase tracking-[0.16em] text-foreground/70">
+          <MessageSquareQuote className="h-3 w-3" />
+          Ask user questions
+        </span>
+        <span>
+          {questions.length === 1
+            ? "1 question"
+            : `${questions.length} questions`}
+        </span>
+      </div>
+
+      {interaction.status === "pending" ? (
+        <div className="space-y-4">
+          {questions.map((question, index) => (
+            <div
+              key={question.id}
+              className="rounded-2xl border border-border/70 bg-background/82 p-4 shadow-[0_18px_42px_rgba(15,23,42,0.06)]"
+            >
+              <div className="flex items-start justify-between gap-3">
+                <div>
+                  <div className="text-[11px] font-semibold uppercase tracking-[0.16em] text-muted-foreground">
+                    Question {index + 1}
+                  </div>
+                  <div className="mt-1 text-sm font-semibold text-foreground">
+                    {question.prompt}
+                  </div>
+                  {question.helpText ? (
+                    <p className="mt-1 text-sm leading-6 text-muted-foreground">
+                      {question.helpText}
+                    </p>
+                  ) : null}
+                </div>
+                <TaskField
+                  label={question.selectionMode === "single" ? "Pick" : "Pick many"}
+                  value={question.required ? "Required" : "Optional"}
+                  tone="subtle"
+                />
+              </div>
+
+              <div className="mt-3 grid gap-3">
+                {question.options.map((option) => (
+                  <QuestionOptionButton
+                    key={option.id}
+                    label={option.label}
+                    description={option.description}
+                    selected={(draftAnswers[question.id] ?? []).includes(option.id)}
+                    onClick={() =>
+                      toggleOption(question.id, option.id, question.selectionMode)}
+                  />
+                ))}
+              </div>
+            </div>
+          ))}
+
+          <div className="flex items-center justify-between gap-3 rounded-2xl border border-border/70 bg-background/75 p-4">
+            <div className="text-sm text-muted-foreground">
+              Submit once after you finish the full form.
+            </div>
+            <Button
+              size="sm"
+              disabled={!onSubmitInteractionAnswers || !canSubmit || working}
+              onClick={() => void handleSubmit()}
+            >
+              {working ? (
+                <>
+                  <Loader2 className="mr-2 h-3.5 w-3.5 animate-spin" />
+                  Submitting...
+                </>
+              ) : (
+                interaction.payload.submitLabel ?? "Submit answers"
+              )}
+            </Button>
+          </div>
+        </div>
+      ) : (
+        <div className="space-y-3">
+          {questions.map((question) => {
+            const labels = getQuestionAnswerLabels({
+              question,
+              answers: interaction.result?.answers ?? [],
+            });
+            return (
+              <div
+                key={question.id}
+                className="rounded-2xl border border-border/70 bg-background/82 p-4"
+              >
+                <div className="text-sm font-semibold text-foreground">
+                  {question.prompt}
+                </div>
+                <div className="mt-2 flex flex-wrap gap-2">
+                  {labels.length > 0 ? (
+                    labels.map((label) => (
+                      <TaskField key={label} label="Answer" value={label} />
+                    ))
+                  ) : (
+                    <span className="text-sm text-muted-foreground">No answer recorded.</span>
+                  )}
+                </div>
+              </div>
+            );
+          })}
+
+          {interaction.result?.summaryMarkdown ? (
+            <div className="rounded-2xl border border-emerald-300/60 bg-emerald-50/85 p-4">
+              <div className="mb-2 text-[11px] font-semibold uppercase tracking-[0.16em] text-emerald-700">
+                Submitted summary
+              </div>
+              <MarkdownBody>{interaction.result.summaryMarkdown}</MarkdownBody>
+            </div>
+          ) : null}
+        </div>
+      )}
+    </div>
+  );
+}
+
+export function IssueThreadInteractionCard({
+  interaction,
+  agentMap,
+  currentUserId,
+  userLabelMap,
+  onAcceptInteraction,
+  onRejectInteraction,
+  onSubmitInteractionAnswers,
+}: IssueThreadInteractionCardProps) {
+  const StatusIcon = statusIcon(interaction.status);
+  const styles = statusClasses(interaction.status);
+  const createdByLabel = resolveActorLabel({
+    agentId: interaction.createdByAgentId,
+    userId: interaction.createdByUserId,
+    agentMap,
+    currentUserId,
+    userLabelMap,
+  });
+  const resolvedByLabel =
+    interaction.resolvedByAgentId || interaction.resolvedByUserId
+      ? resolveActorLabel({
+          agentId: interaction.resolvedByAgentId,
+          userId: interaction.resolvedByUserId,
+          agentMap,
+          currentUserId,
+          userLabelMap,
+        })
+      : null;
+
+  return (
+    <div className={cn("rounded-[28px] border p-5 shadow-[0_28px_70px_rgba(15,23,42,0.10)]", styles.shell)}>
+      <div className="flex flex-wrap items-start justify-between gap-4">
+        <div className="min-w-0 flex-1">
+          <div className="flex flex-wrap items-center gap-2">
+            <span className={cn("inline-flex items-center gap-1 rounded-full border px-2.5 py-1 text-[11px] font-semibold uppercase tracking-[0.16em]", styles.badge)}>
+              <StatusIcon className="h-3.5 w-3.5" />
+              {statusLabel(interaction.status)}
+            </span>
+            {interaction.continuationPolicy === "wake_assignee" ? (
+              <span className="inline-flex items-center gap-1 rounded-full border border-border/70 bg-background/80 px-2.5 py-1 text-[11px] font-medium uppercase tracking-[0.16em] text-foreground/70">
+                <ListChecks className="h-3.5 w-3.5" />
+                Wakes assignee
+              </span>
+            ) : null}
+          </div>
+
+          <div className="mt-3 text-lg font-semibold text-foreground">
+            {interaction.title
+              ?? (interaction.kind === "suggest_tasks"
+                ? "Suggested task tree"
+                : interaction.payload.title ?? "Questions for the operator")}
+          </div>
+          {interaction.summary ? (
+            <p className="mt-2 max-w-3xl text-sm leading-6 text-muted-foreground">
+              {interaction.summary}
+            </p>
+          ) : null}
+        </div>
+
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <div className="rounded-2xl border border-border/70 bg-background/80 px-3 py-2 text-right text-xs text-muted-foreground">
+              <div className="font-medium text-foreground/80">{formatShortDate(interaction.createdAt)}</div>
+              <div>proposed by {createdByLabel}</div>
+            </div>
+          </TooltipTrigger>
+          <TooltipContent side="bottom" className="text-xs">
+            Created {formatDateTime(interaction.createdAt)}
+          </TooltipContent>
+        </Tooltip>
+      </div>
+
+      <div className="mt-5">
+        {interaction.kind === "suggest_tasks" ? (
+          <SuggestTasksCard
+            interaction={interaction}
+            agentMap={agentMap}
+            currentUserId={currentUserId}
+            userLabelMap={userLabelMap}
+            onAcceptInteraction={onAcceptInteraction}
+            onRejectInteraction={onRejectInteraction}
+          />
+        ) : (
+          <AskUserQuestionsCard
+            interaction={interaction}
+            onSubmitInteractionAnswers={onSubmitInteractionAnswers}
+          />
+        )}
+      </div>
+
+      {resolvedByLabel ? (
+        <div className="mt-4 border-t border-border/60 pt-3 text-xs text-muted-foreground">
+          Resolved by <span className="font-medium text-foreground/80">{resolvedByLabel}</span>
+          {interaction.resolvedAt ? ` on ${formatShortDate(interaction.resolvedAt)}` : ""}
+        </div>
+      ) : null}
+    </div>
+  );
+}
diff --git a/ui/src/fixtures/issueThreadInteractionFixtures.ts b/ui/src/fixtures/issueThreadInteractionFixtures.ts
new file mode 100644
index 00000000000..4b9ced9fafc
--- /dev/null
+++ b/ui/src/fixtures/issueThreadInteractionFixtures.ts
@@ -0,0 +1,337 @@
+import type { LiveRunForIssue } from "../api/heartbeats";
+import type {
+  IssueChatComment,
+  IssueChatTranscriptEntry,
+} from "../lib/issue-chat-messages";
+import type { IssueTimelineEvent } from "../lib/issue-timeline-events";
+import type {
+  AskUserQuestionsInteraction,
+  SuggestTasksInteraction,
+} from "../lib/issue-thread-interactions";
+
+export const issueThreadInteractionFixtureMeta = {
+  companyId: "company-storybook",
+  projectId: "project-board-ui",
+  issueId: "issue-thread-interactions",
+  currentUserId: "user-board",
+} as const;
+
+function createComment(overrides: Partial<IssueChatComment>): IssueChatComment {
+  const createdAt = overrides.createdAt ?? new Date("2026-04-20T14:00:00.000Z");
+  return {
+    id: "comment-default",
+    companyId: issueThreadInteractionFixtureMeta.companyId,
+    issueId: issueThreadInteractionFixtureMeta.issueId,
+    authorAgentId: null,
+    authorUserId: issueThreadInteractionFixtureMeta.currentUserId,
+    body: "",
+    createdAt,
+    updatedAt: overrides.updatedAt ?? createdAt,
+    ...overrides,
+  };
+}
+
+function createSuggestTasksInteraction(
+  overrides: Partial<SuggestTasksInteraction>,
+): SuggestTasksInteraction {
+  return {
+    id: "interaction-suggest-default",
+    companyId: issueThreadInteractionFixtureMeta.companyId,
+    issueId: issueThreadInteractionFixtureMeta.issueId,
+    kind: "suggest_tasks",
+    title: "Suggested issue tree for the first interaction pass",
+    summary:
+      "Draft task creation stays pending until a reviewer accepts it, so the thread can preview structure without mutating the task system.",
+    status: "pending",
+    continuationPolicy: "wake_assignee",
+    createdByAgentId: "agent-codex",
+    createdByUserId: null,
+    resolvedByAgentId: null,
+    resolvedByUserId: null,
+    createdAt: new Date("2026-04-20T14:11:00.000Z"),
+    updatedAt: new Date("2026-04-20T14:11:00.000Z"),
+    resolvedAt: null,
+    payload: {
+      version: 1,
+      defaultParentId: "PAP-1709",
+      tasks: [
+        {
+          clientKey: "root-design",
+          title: "Prototype issue-thread interaction cards",
+          description:
+            "Build render-only cards that sit in the issue feed and show suggested tasks before anything is persisted.",
+          priority: "high",
+          assigneeAgentId: "agent-codex",
+          billingCode: "ui-research",
+          labels: ["UI", "interaction"],
+        },
+        {
+          clientKey: "child-stories",
+          parentClientKey: "root-design",
+          title: "Add Storybook coverage for acceptance and rejection states",
+          description:
+            "Cover pending, accepted, rejected, and collapsed-child previews in a fixture-backed story.",
+          priority: "medium",
+          assigneeAgentId: "agent-qa",
+          labels: ["Storybook"],
+        },
+        {
+          clientKey: "child-mixed-thread",
+          parentClientKey: "root-design",
+          title: "Prototype the mixed thread feed",
+          description:
+            "Show comments, activity, live runs, and interaction cards in one chronological feed.",
+          priority: "medium",
+          assigneeAgentId: "agent-codex",
+          labels: ["Issue thread"],
+        },
+        {
+          clientKey: "hidden-follow-up",
+          parentClientKey: "child-mixed-thread",
+          title: "Follow-up polish on spacing and answered summaries",
+          description:
+            "Collapse this under the visible task tree so the preview proves the hidden-descendant treatment.",
+          priority: "low",
+          hiddenInPreview: true,
+        },
+      ],
+    },
+    result: null,
+    ...overrides,
+  };
+}
+
+function createAskUserQuestionsInteraction(
+  overrides: Partial<AskUserQuestionsInteraction>,
+): AskUserQuestionsInteraction {
+  return {
+    id: "interaction-questions-default",
+    companyId: issueThreadInteractionFixtureMeta.companyId,
+    issueId: issueThreadInteractionFixtureMeta.issueId,
+    kind: "ask_user_questions",
+    title: "Resolve open UX decisions before Phase 1",
+    summary:
+      "This form stays local until the operator submits it, so the assignee only wakes once after the whole answer set is ready.",
+    status: "pending",
+    continuationPolicy: "wake_assignee",
+    createdByAgentId: "agent-codex",
+    createdByUserId: null,
+    resolvedByAgentId: null,
+    resolvedByUserId: null,
+    createdAt: new Date("2026-04-20T14:18:00.000Z"),
+    updatedAt: new Date("2026-04-20T14:18:00.000Z"),
+    resolvedAt: null,
+    payload: {
+      version: 1,
+      title: "Before I wire the persistence layer, which preview behavior do you want?",
+      submitLabel: "Send answers",
+      questions: [
+        {
+          id: "collapse-depth",
+          prompt: "How aggressive should the suggested-task preview collapse descendant work?",
+          helpText:
+            "We need enough context to review the tree without making the feed feel like a project plan.",
+          selectionMode: "single",
+          required: true,
+          options: [
+            {
+              id: "visible-root",
+              label: "Only collapse hidden descendants",
+              description: "Keep top-level and visible child tasks expanded.",
+            },
+            {
+              id: "collapse-all",
+              label: "Collapse all descendants by default",
+              description: "Show only root tasks until the operator expands the tree.",
+            },
+          ],
+        },
+        {
+          id: "post-submit-summary",
+          prompt: "What should the answered-state card emphasize after submission?",
+          helpText: "Pick every summary treatment that would help future reviewers.",
+          selectionMode: "multi",
+          required: true,
+          options: [
+            {
+              id: "answers-inline",
+              label: "Inline answer pills",
+              description: "Keep the exact operator choices visible under each question.",
+            },
+            {
+              id: "summary-note",
+              label: "Short markdown summary",
+              description: "Add a compact narrative summary at the bottom of the card.",
+            },
+            {
+              id: "resolver-meta",
+              label: "Resolver metadata",
+              description: "Show who answered and when without opening the raw thread.",
+            },
+          ],
+        },
+      ],
+    },
+    result: null,
+    ...overrides,
+  };
+}
+
+export const pendingSuggestedTasksInteraction = createSuggestTasksInteraction({});
+
+export const acceptedSuggestedTasksInteraction = createSuggestTasksInteraction({
+  id: "interaction-suggest-accepted",
+  status: "accepted",
+  resolvedByUserId: issueThreadInteractionFixtureMeta.currentUserId,
+  resolvedAt: new Date("2026-04-20T14:16:00.000Z"),
+  updatedAt: new Date("2026-04-20T14:16:00.000Z"),
+  result: {
+    version: 1,
+    createdTasks: [
+      {
+        clientKey: "root-design",
+        issueId: "issue-created-1",
+        identifier: "PAP-1713",
+        title: "Prototype issue-thread interaction cards",
+      },
+      {
+        clientKey: "child-stories",
+        issueId: "issue-created-2",
+        identifier: "PAP-1714",
+        title: "Add Storybook coverage for acceptance and rejection states",
+        parentIssueId: "issue-created-1",
+        parentIdentifier: "PAP-1713",
+      },
+      {
+        clientKey: "child-mixed-thread",
+        issueId: "issue-created-3",
+        identifier: "PAP-1715",
+        title: "Prototype the mixed thread feed",
+        parentIssueId: "issue-created-1",
+        parentIdentifier: "PAP-1713",
+      },
+      {
+        clientKey: "hidden-follow-up",
+        issueId: "issue-created-4",
+        identifier: "PAP-1716",
+        title: "Follow-up polish on spacing and answered summaries",
+        parentIssueId: "issue-created-3",
+        parentIdentifier: "PAP-1715",
+      },
+    ],
+  },
+});
+
+export const rejectedSuggestedTasksInteraction = createSuggestTasksInteraction({
+  id: "interaction-suggest-rejected",
+  status: "rejected",
+  resolvedByUserId: issueThreadInteractionFixtureMeta.currentUserId,
+  resolvedAt: new Date("2026-04-20T14:17:00.000Z"),
+  updatedAt: new Date("2026-04-20T14:17:00.000Z"),
+  result: {
+    version: 1,
+    rejectionReason:
+      "Keep the first pass tighter. The hidden follow-on work is useful, but the acceptance story should stay focused on one visible root and one visible child.",
+  },
+});
+
+export const pendingAskUserQuestionsInteraction = createAskUserQuestionsInteraction({});
+
+export const answeredAskUserQuestionsInteraction = createAskUserQuestionsInteraction({
+  id: "interaction-questions-answered",
+  status: "answered",
+  resolvedByUserId: issueThreadInteractionFixtureMeta.currentUserId,
+  resolvedAt: new Date("2026-04-20T14:24:00.000Z"),
+  updatedAt: new Date("2026-04-20T14:24:00.000Z"),
+  result: {
+    version: 1,
+    answers: [
+      {
+        questionId: "collapse-depth",
+        optionIds: ["visible-root"],
+      },
+      {
+        questionId: "post-submit-summary",
+        optionIds: ["answers-inline", "summary-note", "resolver-meta"],
+      },
+    ],
+    summaryMarkdown: [
+      "- Keep visible child tasks expanded when they are part of the main review path.",
+      "- Preserve inline answer chips and resolver metadata in the answered state.",
+      "- Add a short summary note so future reviewers understand the operator's intent without replaying the form.",
+    ].join("\n"),
+  },
+});
+
+export const issueThreadInteractionComments: IssueChatComment[] = [
+  createComment({
+    id: "comment-thread-board",
+    body: "Pressure-test first-class issue-thread interactions before we touch persistence. I want to see the cards in the real feed, not in a disconnected mock.",
+    createdAt: new Date("2026-04-20T14:02:00.000Z"),
+    updatedAt: new Date("2026-04-20T14:02:00.000Z"),
+  }),
+  createComment({
+    id: "comment-thread-agent",
+    authorAgentId: "agent-codex",
+    authorUserId: null,
+    body: "I found the existing issue chat surface and I am adding prototype-only interaction records so the Storybook review can happen before persistence work.",
+    createdAt: new Date("2026-04-20T14:09:00.000Z"),
+    updatedAt: new Date("2026-04-20T14:09:00.000Z"),
+    runId: "run-thread-interaction",
+    runAgentId: "agent-codex",
+  }),
+];
+
+export const issueThreadInteractionEvents: IssueTimelineEvent[] = [
+  {
+    id: "event-thread-checkout",
+    createdAt: new Date("2026-04-20T14:01:00.000Z"),
+    actorType: "user",
+    actorId: issueThreadInteractionFixtureMeta.currentUserId,
+    statusChange: {
+      from: "todo",
+      to: "in_progress",
+    },
+  },
+];
+
+export const issueThreadInteractionLiveRuns: LiveRunForIssue[] = [
+  {
+    id: "run-thread-live",
+    status: "running",
+    invocationSource: "manual",
+    triggerDetail: null,
+    startedAt: "2026-04-20T14:26:00.000Z",
+    finishedAt: null,
+    createdAt: "2026-04-20T14:26:00.000Z",
+    agentId: "agent-codex",
+    agentName: "CodexCoder",
+    adapterType: "codex_local",
+  },
+];
+
+export const issueThreadInteractionTranscriptsByRunId = new Map<
+  string,
+  readonly IssueChatTranscriptEntry[]
+>([
+  [
+    "run-thread-live",
+    [
+      {
+        kind: "assistant",
+        ts: "2026-04-20T14:26:02.000Z",
+        text: "Wiring the prototype interaction cards into the same issue feed that already renders comments and live runs.",
+      },
+      {
+        kind: "thinking",
+        ts: "2026-04-20T14:26:04.000Z",
+        text: "Need to keep the payload shapes local to the UI layer so Phase 0 stays non-persistent.",
+      },
+    ],
+  ],
+]);
+
+export const mixedIssueThreadInteractions = [
+  acceptedSuggestedTasksInteraction,
+  pendingAskUserQuestionsInteraction,
+];
diff --git a/ui/src/lib/issue-chat-messages.test.ts b/ui/src/lib/issue-chat-messages.test.ts
index 7bd64723550..3775b536f3b 100644
--- a/ui/src/lib/issue-chat-messages.test.ts
+++ b/ui/src/lib/issue-chat-messages.test.ts
@@ -7,6 +7,7 @@ import {
   type IssueChatComment,
   type IssueChatLinkedRun,
 } from "./issue-chat-messages";
+import type { SuggestTasksInteraction } from "./issue-thread-interactions";
 import type { IssueTimelineEvent } from "./issue-timeline-events";
 import type { LiveRunForIssue } from "../api/heartbeats";
 
@@ -51,6 +52,39 @@ function createComment(overrides: Partial<IssueChatComment> = {}): IssueChatComm
   };
 }
 
+function createInteraction(
+  overrides: Partial<SuggestTasksInteraction> = {},
+): SuggestTasksInteraction {
+  return {
+    id: "interaction-1",
+    companyId: "company-1",
+    issueId: "issue-1",
+    kind: "suggest_tasks",
+    title: "Suggested follow-up work",
+    summary: "Preview the next issue tree before accepting it.",
+    status: "pending",
+    continuationPolicy: "wake_assignee",
+    createdByAgentId: "agent-1",
+    createdByUserId: null,
+    resolvedByAgentId: null,
+    resolvedByUserId: null,
+    createdAt: new Date("2026-04-06T12:02:00.000Z"),
+    updatedAt: new Date("2026-04-06T12:02:00.000Z"),
+    resolvedAt: null,
+    payload: {
+      version: 1,
+      tasks: [
+        {
+          clientKey: "task-1",
+          title: "Prototype the card",
+        },
+      ],
+    },
+    result: null,
+    ...overrides,
+  };
+}
+
 describe("buildAssistantPartsFromTranscript", () => {
   it("maps assistant text, reasoning, and tool activity while omitting noisy stderr", () => {
     const result = buildAssistantPartsFromTranscript([
@@ -343,6 +377,63 @@ describe("buildIssueChatMessages", () => {
     });
   });
 
+  it("merges thread interactions into the same chronological feed as comments and runs", () => {
+    const messages = buildIssueChatMessages({
+      comments: [
+        createComment({
+          id: "comment-1",
+          createdAt: new Date("2026-04-06T12:01:00.000Z"),
+          updatedAt: new Date("2026-04-06T12:01:00.000Z"),
+        }),
+      ],
+      interactions: [
+        createInteraction({
+          id: "interaction-2",
+          createdAt: new Date("2026-04-06T12:02:00.000Z"),
+          updatedAt: new Date("2026-04-06T12:02:00.000Z"),
+        }),
+      ],
+      timelineEvents: [],
+      linkedRuns: [],
+      liveRuns: [
+        {
+          id: "run-live-1",
+          status: "running",
+          invocationSource: "manual",
+          triggerDetail: null,
+          startedAt: "2026-04-06T12:03:00.000Z",
+          finishedAt: null,
+          createdAt: "2026-04-06T12:03:00.000Z",
+          agentId: "agent-1",
+          agentName: "CodexCoder",
+          adapterType: "codex_local",
+        },
+      ],
+      transcriptsByRunId: new Map([
+        [
+          "run-live-1",
+          [{ kind: "assistant", ts: "2026-04-06T12:03:01.000Z", text: "Working on it." }],
+        ],
+      ]),
+      hasOutputForRun: (runId) => runId === "run-live-1",
+      currentUserId: "user-1",
+    });
+
+    expect(messages.map((message) => `${message.role}:${message.id}`)).toEqual([
+      "user:comment-1",
+      "system:interaction:interaction-2",
+      "assistant:run-assistant:run-live-1",
+    ]);
+    expect(messages[1]).toMatchObject({
+      metadata: {
+        custom: {
+          kind: "interaction",
+          anchorId: "interaction-interaction-2",
+        },
+      },
+    });
+  });
+
   it("keeps succeeded runs as assistant messages when transcript output exists", () => {
     const agentMap = new Map<string, Agent>([["agent-1", createAgent("agent-1", "CodexCoder")]]);
     const messages = buildIssueChatMessages({
diff --git a/ui/src/lib/issue-chat-messages.ts b/ui/src/lib/issue-chat-messages.ts
index 5b52498716c..503f26fc9c6 100644
--- a/ui/src/lib/issue-chat-messages.ts
+++ b/ui/src/lib/issue-chat-messages.ts
@@ -10,6 +10,10 @@ import type {
 import type { Agent, IssueComment } from "@paperclipai/shared";
 import type { ActiveRunForIssue, LiveRunForIssue } from "../api/heartbeats";
 import { formatAssigneeUserLabel } from "./assignees";
+import {
+  buildIssueThreadInteractionSummary,
+  type IssueThreadInteraction,
+} from "./issue-thread-interactions";
 import type { IssueTimelineEvent } from "./issue-timeline-events";
 import {
   summarizeNotice,
@@ -387,6 +391,23 @@ function createTimelineEventMessage(args: {
   return message;
 }
 
+function createInteractionMessage(interaction: IssueThreadInteraction) {
+  const message: ThreadSystemMessage = {
+    id: `interaction:${interaction.id}`,
+    role: "system",
+    createdAt: toDate(interaction.createdAt),
+    content: [{ type: "text", text: buildIssueThreadInteractionSummary(interaction) }],
+    metadata: {
+      custom: {
+        kind: "interaction",
+        anchorId: `interaction-${interaction.id}`,
+        interaction,
+      },
+    },
+  };
+  return message;
+}
+
 function runTimestamp(run: IssueChatLinkedRun) {
   return run.finishedAt ?? run.startedAt ?? run.createdAt;
 }
@@ -738,6 +759,7 @@ function createLiveRunMessage(args: {
 
 export function buildIssueChatMessages(args: {
   comments: readonly IssueChatComment[];
+  interactions?: readonly IssueThreadInteraction[];
   timelineEvents: readonly IssueTimelineEvent[];
   linkedRuns: readonly IssueChatLinkedRun[];
   liveRuns: readonly LiveRunForIssue[];
@@ -754,6 +776,7 @@ export function buildIssueChatMessages(args: {
 }) {
   const {
     comments,
+    interactions = [],
     timelineEvents,
     linkedRuns,
     liveRuns,
@@ -779,6 +802,14 @@ export function buildIssueChatMessages(args: {
     });
   }
 
+  for (const interaction of sortByCreated(interactions)) {
+    orderedMessages.push({
+      createdAtMs: toTimestamp(interaction.createdAt),
+      order: 2,
+      message: createInteractionMessage(interaction),
+    });
+  }
+
   for (const event of sortByCreated(timelineEvents)) {
     orderedMessages.push({
       createdAtMs: toTimestamp(event.createdAt),
diff --git a/ui/src/lib/issue-thread-interactions.test.ts b/ui/src/lib/issue-thread-interactions.test.ts
new file mode 100644
index 00000000000..2fb6e1b9689
--- /dev/null
+++ b/ui/src/lib/issue-thread-interactions.test.ts
@@ -0,0 +1,99 @@
+import { describe, expect, it } from "vitest";
+import {
+  buildIssueThreadInteractionSummary,
+  buildSuggestedTaskTree,
+  countSuggestedTaskNodes,
+  getQuestionAnswerLabels,
+} from "./issue-thread-interactions";
+
+describe("buildSuggestedTaskTree", () => {
+  it("preserves parent-child relationships from client keys", () => {
+    const roots = buildSuggestedTaskTree([
+      {
+        clientKey: "root",
+        title: "Root",
+      },
+      {
+        clientKey: "child",
+        parentClientKey: "root",
+        title: "Child",
+      },
+      {
+        clientKey: "grandchild",
+        parentClientKey: "child",
+        title: "Grandchild",
+      },
+    ]);
+
+    expect(roots).toHaveLength(1);
+    expect(roots[0]?.task.clientKey).toBe("root");
+    expect(roots[0]?.children[0]?.task.clientKey).toBe("child");
+    expect(countSuggestedTaskNodes(roots[0]!)).toBe(3);
+  });
+});
+
+describe("issue thread interaction helpers", () => {
+  it("summarizes task and question interactions", () => {
+    expect(buildIssueThreadInteractionSummary({
+      id: "interaction-1",
+      companyId: "company-1",
+      issueId: "issue-1",
+      kind: "suggest_tasks",
+      status: "pending",
+      continuationPolicy: "wake_assignee",
+      createdAt: "2026-04-06T12:00:00.000Z",
+      updatedAt: "2026-04-06T12:00:00.000Z",
+      payload: {
+        version: 1,
+        tasks: [
+          { clientKey: "task-1", title: "One" },
+          { clientKey: "task-2", title: "Two" },
+        ],
+      },
+    })).toBe("Suggested 2 tasks");
+
+    expect(buildIssueThreadInteractionSummary({
+      id: "interaction-2",
+      companyId: "company-1",
+      issueId: "issue-1",
+      kind: "ask_user_questions",
+      status: "pending",
+      continuationPolicy: "wake_assignee",
+      createdAt: "2026-04-06T12:00:00.000Z",
+      updatedAt: "2026-04-06T12:00:00.000Z",
+      payload: {
+        version: 1,
+        questions: [
+          {
+            id: "question-1",
+            prompt: "Pick one",
+            selectionMode: "single",
+            options: [{ id: "option-1", label: "Option 1" }],
+          },
+        ],
+      },
+    })).toBe("Asked 1 question");
+  });
+
+  it("maps stored option ids back to labels for answered summaries", () => {
+    const labels = getQuestionAnswerLabels({
+      question: {
+        id: "question-1",
+        prompt: "Pick options",
+        selectionMode: "multi",
+        options: [
+          { id: "option-1", label: "Option 1" },
+          { id: "option-2", label: "Option 2" },
+        ],
+      },
+      answers: [
+        {
+          questionId: "question-1",
+          optionIds: ["option-2", "option-1"],
+        },
+      ],
+    });
+
+    expect(labels).toEqual(["Option 2", "Option 1"]);
+  });
+});
diff --git a/ui/src/lib/issue-thread-interactions.ts b/ui/src/lib/issue-thread-interactions.ts
new file mode 100644
index 00000000000..b8a50ec53a1
--- /dev/null
+++ b/ui/src/lib/issue-thread-interactions.ts
@@ -0,0 +1,187 @@
+export type IssueThreadInteractionStatus =
+  | "pending"
+  | "accepted"
+  | "rejected"
+  | "answered"
+  | "expired"
+  | "failed";
+
+export type IssueThreadInteractionContinuationPolicy = "none" | "wake_assignee";
+
+export interface IssueThreadInteractionActorFields {
+  createdByAgentId?: string | null;
+  createdByUserId?: string | null;
+  resolvedByAgentId?: string | null;
+  resolvedByUserId?: string | null;
+}
+
+export interface IssueThreadInteractionBase extends IssueThreadInteractionActorFields {
+  id: string;
+  companyId: string;
+  issueId: string;
+  sourceCommentId?: string | null;
+  sourceRunId?: string | null;
+  title?: string | null;
+  summary?: string | null;
+  status: IssueThreadInteractionStatus;
+  continuationPolicy: IssueThreadInteractionContinuationPolicy;
+  createdAt: Date | string;
+  updatedAt: Date | string;
+  resolvedAt?: Date | string | null;
+}
+
+export interface SuggestedTaskDraft {
+  clientKey: string;
+  parentClientKey?: string | null;
+  parentId?: string | null;
+  title: string;
+  description?: string | null;
+  priority?: "critical" | "high" | "medium" | "low" | null;
+  assigneeAgentId?: string | null;
+  assigneeUserId?: string | null;
+  projectId?: string | null;
+  goalId?: string | null;
+  billingCode?: string | null;
+  labels?: string[];
+  hiddenInPreview?: boolean;
+}
+
+export interface SuggestTasksPayload {
+  version: 1;
+  defaultParentId?: string | null;
+  tasks: SuggestedTaskDraft[];
+}
+
+export interface SuggestTasksResultCreatedTask {
+  clientKey: string;
+  issueId: string;
+  identifier?: string | null;
+  title?: string | null;
+  parentIssueId?: string | null;
+  parentIdentifier?: string | null;
+}
+
+export interface SuggestTasksResult {
+  version: 1;
+  createdTasks?: SuggestTasksResultCreatedTask[];
+  rejectionReason?: string | null;
+}
+
+export interface SuggestTasksInteraction extends IssueThreadInteractionBase {
+  kind: "suggest_tasks";
+  payload: SuggestTasksPayload;
+  result?: SuggestTasksResult | null;
+}
+
+export interface AskUserQuestionsQuestionOption {
+  id: string;
+  label: string;
+  description?: string | null;
+}
+
+export interface AskUserQuestionsQuestion {
+  id: string;
+  prompt: string;
+  helpText?: string | null;
+  selectionMode: "single" | "multi";
+  required?: boolean;
+  options: AskUserQuestionsQuestionOption[];
+}
+
+export interface AskUserQuestionsPayload {
+  version: 1;
+  title?: string | null;
+  submitLabel?: string | null;
+  questions: AskUserQuestionsQuestion[];
+}
+
+export interface AskUserQuestionsAnswer {
+  questionId: string;
+  optionIds: string[];
+}
+
+export interface AskUserQuestionsResult {
+  version: 1;
+  answers: AskUserQuestionsAnswer[];
+  summaryMarkdown?: string | null;
+}
+
+export interface AskUserQuestionsInteraction extends IssueThreadInteractionBase {
+  kind: "ask_user_questions";
+  payload: AskUserQuestionsPayload;
+  result?: AskUserQuestionsResult | null;
+}
+
+export type IssueThreadInteraction =
+  | SuggestTasksInteraction
+  | AskUserQuestionsInteraction;
+
+export interface SuggestedTaskTreeNode {
+  task: SuggestedTaskDraft;
+  children: SuggestedTaskTreeNode[];
+}
+
+export function isIssueThreadInteraction(
+  value: unknown,
+): value is IssueThreadInteraction {
+  if (!value || typeof value !== "object") return false;
+  const candidate = value as Partial<IssueThreadInteraction>;
+  return typeof candidate.id === "string"
+    && typeof candidate.companyId === "string"
+    && typeof candidate.issueId === "string"
+    && (candidate.kind === "suggest_tasks" || candidate.kind === "ask_user_questions");
+}
+
+export function buildIssueThreadInteractionSummary(
+  interaction: IssueThreadInteraction,
+) {
+  if (interaction.kind === "suggest_tasks") {
+    const count = interaction.payload.tasks.length;
+    return count === 1 ? "Suggested 1 task" : `Suggested ${count} tasks`;
+  }
+
+  const count = interaction.payload.questions.length;
+  return count === 1 ? "Asked 1 question" : `Asked ${count} questions`;
+}
+
+export function buildSuggestedTaskTree(
+  tasks: readonly SuggestedTaskDraft[],
+): SuggestedTaskTreeNode[] {
+  const nodes = new Map<string, SuggestedTaskTreeNode>();
+  for (const task of tasks) {
+    nodes.set(task.clientKey, { task, children: [] });
+  }
+
+  const roots: SuggestedTaskTreeNode[] = [];
+  for (const task of tasks) {
+    const node = nodes.get(task.clientKey);
+    if (!node) continue;
+    const parentNode = task.parentClientKey ? nodes.get(task.parentClientKey) : null;
+    if (parentNode) {
+      parentNode.children.push(node);
+      continue;
+    }
+    roots.push(node);
+  }
+
+  return roots;
+}
+
+export function countSuggestedTaskNodes(node: SuggestedTaskTreeNode): number {
+  return 1 + node.children.reduce((sum, child) => sum + countSuggestedTaskNodes(child), 0);
+}
+
+export function getQuestionAnswerLabels(args: {
+  question: AskUserQuestionsQuestion;
+  answers: readonly AskUserQuestionsAnswer[];
+}) {
+  const { question, answers } = args;
+  const selectedIds =
+    answers.find((answer) => answer.questionId === question.id)?.optionIds ?? [];
+  const optionLabelById = new Map(
+    question.options.map((option) => [option.id, option.label] as const),
+  );
+  return selectedIds
+    .map((optionId) => optionLabelById.get(optionId))
+    .filter((label): label is string => typeof label === "string");
+}
diff --git a/ui/storybook/stories/issue-thread-interactions.stories.tsx b/ui/storybook/stories/issue-thread-interactions.stories.tsx
new file mode 100644
index 00000000000..580275bdc91
--- /dev/null
+++ b/ui/storybook/stories/issue-thread-interactions.stories.tsx
@@ -0,0 +1,265 @@
+import { useState } from "react";
+import type { Meta, StoryObj } from "@storybook/react-vite";
+import { IssueChatThread } from "@/components/IssueChatThread";
+import { IssueThreadInteractionCard } from "@/components/IssueThreadInteractionCard";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import {
+  acceptedSuggestedTasksInteraction,
+  answeredAskUserQuestionsInteraction,
+  issueThreadInteractionComments,
+  issueThreadInteractionEvents,
+  issueThreadInteractionFixtureMeta,
+  issueThreadInteractionLiveRuns,
+  issueThreadInteractionTranscriptsByRunId,
+  mixedIssueThreadInteractions,
+  pendingAskUserQuestionsInteraction,
+  pendingSuggestedTasksInteraction,
+  rejectedSuggestedTasksInteraction,
+} from "@/fixtures/issueThreadInteractionFixtures";
+import type {
+  AskUserQuestionsAnswer,
+  AskUserQuestionsInteraction,
+  SuggestTasksInteraction,
+} from "@/lib/issue-thread-interactions";
+import { storybookAgentMap } from "../fixtures/paperclipData";
+
+const boardUserLabels = new Map<string, string>([
+  [issueThreadInteractionFixtureMeta.currentUserId, "Riley Board"],
+  ["user-product", "Mara Product"],
+]);
+
+function StoryFrame({ children }: { children: React.ReactNode }) {
+  return (
+    <div className="paperclip-story">
+      <main className="paperclip-story__inner space-y-6">{children}</main>
+    </div>
+  );
+}
+
+function Section({
+  eyebrow,
+  title,
+  children,
+}: {
+  eyebrow: string;
+  title: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <section className="paperclip-story__frame overflow-hidden">
+      <div className="flex flex-wrap items-start justify-between gap-3 border-b border-border px-5 py-4">
+        <div>
+          <div className="paperclip-story__label">{eyebrow}</div>
+          <h2 className="mt-1 text-xl font-semibold">{title}</h2>
+        </div>
+      </div>
+      <div className="p-5">{children}</div>
+    </section>
+  );
+}
+
+function ScenarioCard({
+  title,
+  description,
+  children,
+}: {
+  title: string;
+  description: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <Card className="shadow-none">
+      <CardHeader>
+        <CardTitle>{title}</CardTitle>
+        <CardDescription>{description}</CardDescription>
+      </CardHeader>
+      <CardContent>{children}</CardContent>
+    </Card>
+  );
+}
+
+function InteractiveSuggestedTasksCard() {
+  const [interaction, setInteraction] = useState<SuggestTasksInteraction>(
+    pendingSuggestedTasksInteraction,
+  );
+
+  return (
+    <IssueThreadInteractionCard
+      interaction={interaction}
+      agentMap={storybookAgentMap}
+      currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
+      userLabelMap={boardUserLabels}
+      onAcceptInteraction={() => setInteraction(acceptedSuggestedTasksInteraction)}
+      onRejectInteraction={(_interaction, reason) =>
+        setInteraction({
+          ...rejectedSuggestedTasksInteraction,
+          result: {
+            version: 1,
+            ...(rejectedSuggestedTasksInteraction.result ?? {}),
+            rejectionReason:
+              reason
+              || rejectedSuggestedTasksInteraction.result?.rejectionReason
+              || null,
+          },
+        })}
+    />
+  );
+}
+
+function buildAnsweredInteraction(
+  answers: AskUserQuestionsAnswer[],
+): AskUserQuestionsInteraction {
+  const labels = pendingAskUserQuestionsInteraction.payload.questions.flatMap((question) => {
+    const answer = answers.find((entry) => entry.questionId === question.id);
+    if (!answer) return [];
+    return question.options
+      .filter((option) => answer.optionIds.includes(option.id))
+      .map((option) => option.label);
+  });
+
+  return {
+    ...answeredAskUserQuestionsInteraction,
+    result: {
+      version: 1,
+      answers,
+      summaryMarkdown: labels.map((label) => `- ${label}`).join("\n"),
+    },
+  };
+}
+
+function InteractiveAskUserQuestionsCard() {
+  const [interaction, setInteraction] = useState<AskUserQuestionsInteraction>(
+    pendingAskUserQuestionsInteraction,
+  );
+
+  return (
+    <IssueThreadInteractionCard
+      interaction={interaction}
+      agentMap={storybookAgentMap}
+      currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
+      userLabelMap={boardUserLabels}
+      onSubmitInteractionAnswers={(_interaction, answers) =>
+        setInteraction(buildAnsweredInteraction(answers))}
+    />
+  );
+}
+
+const meta = {
+  title: "Chat & Comments/Issue Thread Interactions",
+  parameters: {
+    docs: {
+      description: {
+        component:
+          "Prototype-only interaction cards for `suggest_tasks` and `ask_user_questions`, shown both in isolation and inside the real `IssueChatThread` feed.",
+      },
+    },
+  },
+} satisfies Meta;
+
+export default meta;
+
+type Story = StoryObj<typeof meta>;
+
+export const ReviewSurface: Story = {
+  render: () => (
+    <StoryFrame>
+      <section className="paperclip-story__frame p-6">
+        <div className="paperclip-story__label">Thread interactions</div>
+        <div className="mt-2 max-w-3xl text-sm leading-6 text-muted-foreground">
+          This prototype keeps the whole system non-persistent while pressure-testing the two planned
+          interaction kinds directly inside the issue chat surface. The card language leans closer to
+          annotated review sheets than generic admin widgets so the objects feel like first-class work
+          artifacts in the thread.
+        </div>
+      </section>
+
+      <Section eyebrow="Suggested Tasks" title="Pending, accepted, and rejected task-tree cards">
+        <div className="grid gap-6 xl:grid-cols-3">
+          <ScenarioCard
+            title="Pending"
+            description="The draft tree stays editable and non-persistent until someone accepts or rejects it."
+          >
+            <InteractiveSuggestedTasksCard />
+          </ScenarioCard>
+          <ScenarioCard
+            title="Accepted"
+            description="Accepted state resolves to created issue links while keeping the original suggestion visible in-thread."
+          >
+            <IssueThreadInteractionCard
+              interaction={acceptedSuggestedTasksInteraction}
+              agentMap={storybookAgentMap}
+              currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
+              userLabelMap={boardUserLabels}
+            />
+          </ScenarioCard>
+          <ScenarioCard
+            title="Rejected"
+            description="The rejection reason remains attached to the artifact so future reviewers can see why the draft was declined."
+          >
+            <IssueThreadInteractionCard
+              interaction={rejectedSuggestedTasksInteraction}
+              agentMap={storybookAgentMap}
+              currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
+              userLabelMap={boardUserLabels}
+            />
+          </ScenarioCard>
+        </div>
+      </Section>
+
+      <Section eyebrow="Ask User Questions" title="Pending multi-question form and answered summary">
+        <div className="grid gap-6 xl:grid-cols-2">
+          <ScenarioCard
+            title="Pending"
+            description="Answers stay local across the whole form and only wake the assignee once after final submit."
+          >
+            <InteractiveAskUserQuestionsCard />
+          </ScenarioCard>
+          <ScenarioCard
+            title="Answered"
+            description="The answered state keeps the exact choices visible and adds a compact summary note for later review."
+          >
+            <IssueThreadInteractionCard
+              interaction={answeredAskUserQuestionsInteraction}
+              agentMap={storybookAgentMap}
+              currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
+              userLabelMap={boardUserLabels}
+            />
+          </ScenarioCard>
+        </div>
+      </Section>
+
+      <Section eyebrow="Mixed Feed" title="Interaction cards in the real issue thread">
+        <ScenarioCard
+          title="IssueChatThread composition"
+          description="Comments, timeline events, accepted task suggestions, a pending question form, and an active run share the same feed without persistence work."
+        >
+          <div className="overflow-hidden rounded-[32px] border border-border/70 bg-[linear-gradient(135deg,rgba(14,165,233,0.08),transparent_28%),linear-gradient(180deg,rgba(245,158,11,0.08),transparent_42%),var(--background)] p-5 shadow-[0_30px_80px_rgba(15,23,42,0.10)]">
+            <IssueChatThread
+              comments={issueThreadInteractionComments}
+              interactions={mixedIssueThreadInteractions}
+              timelineEvents={issueThreadInteractionEvents}
+              liveRuns={issueThreadInteractionLiveRuns}
+              transcriptsByRunId={issueThreadInteractionTranscriptsByRunId}
+              hasOutputForRun={(runId) => runId === "run-thread-live"}
+              companyId={issueThreadInteractionFixtureMeta.companyId}
+              projectId={issueThreadInteractionFixtureMeta.projectId}
+              currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
+              userLabelMap={boardUserLabels}
+              agentMap={storybookAgentMap}
+              onAdd={async () => {}}
+              showComposer={false}
+            />
+          </div>
+        </ScenarioCard>
+      </Section>
+    </StoryFrame>
+  ),
+  parameters: {
+    docs: {
+      description: {
+        story:
+          "Covers the prototype states called out in [PAP-1709](/PAP/issues/PAP-1709): suggested-task previews, collapsed descendants, rejection reasons, multi-question answers, and a mixed issue thread.",
+      },
+    },
+  },
+};