Thread externalReferences through issue-scoped markdown surfaces

Extend the Phase 6 plumbing so every `MarkdownBody` rendered inside an
issue context receives `externalObjectsState.markdownReferences`. Comments,
documents, chat, continuation handoffs, interaction details, and run
transcripts now decorate resolved external URLs with the §2 status chip.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/components/CommentThread.test.tsx

@@ -9,8 +9,22 @@ import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import { CommentThread } from "./CommentThread";
 
 vi.mock("./MarkdownBody", () => ({
-  MarkdownBody: ({ children, className }: { children: ReactNode; className?: string }) => (
-    <div className={className}>{children}</div>
+  MarkdownBody: ({
+    children,
+    className,
+    externalReferences,
+  }: {
+    children: ReactNode;
+    className?: string;
+    externalReferences?: Record<string, unknown>;
+  }) => (
+    <div
+      className={className}
+      data-testid="markdown-body"
+      data-external-reference-keys={externalReferences ? Object.keys(externalReferences).join(",") : ""}
+    >
+      {children}
+    </div>
   ),
 }));
 
@@ -395,4 +409,48 @@ describe("CommentThread", () => {
       root.unmount();
     });
   });
+
+  it("passes externalReferences to MarkdownBody for comment bodies", () => {
+    const root = createRoot(container);
+
+    act(() => {
+      root.render(
+        <MemoryRouter>
+          <CommentThread
+            comments={[{
+              id: "comment-ref",
+              companyId: "company-1",
+              issueId: "issue-1",
+              authorAgentId: null,
+              authorUserId: "user-1",
+              body: "See https://github.com/example/repo/pull/42 for context.",
+              createdAt: new Date("2026-03-11T11:00:00.000Z"),
+              updatedAt: new Date("2026-03-11T11:00:00.000Z"),
+            }]}
+            externalReferences={{
+              "https://github.com/example/repo/pull/42": {
+                providerKey: "github",
+                objectType: "pull_request",
+                statusCategory: "open",
+                liveness: "fresh",
+                statusLabel: "Open",
+                displayTitle: "PR #42",
+              },
+            }}
+            onAdd={async () => {}}
+          />
+        </MemoryRouter>,
+      );
+    });
+
+    const commentRow = container.querySelector("#comment-comment-ref") as HTMLDivElement | null;
+    expect(commentRow).not.toBeNull();
+    const markdownBody = commentRow?.querySelector('[data-testid="markdown-body"]') as HTMLElement | null;
+    expect(markdownBody?.getAttribute("data-external-reference-keys"))
+      .toContain("https://github.com/example/repo/pull/42");
+
+    act(() => {
+      root.unmount();
+    });
+  });
 });

ui/src/components/CommentThread.tsx

@@ -14,7 +14,7 @@ import { ArrowRight, Check, Copy, Paperclip } from "lucide-react";
 import { Avatar, AvatarFallback } from "@/components/ui/avatar";
 import { Identity } from "./Identity";
 import { InlineEntitySelector, type InlineEntityOption } from "./InlineEntitySelector";
-import { MarkdownBody } from "./MarkdownBody";
+import { MarkdownBody, type MarkdownExternalReferenceMap } from "./MarkdownBody";
 import { MarkdownEditor, type MarkdownEditorRef, type MentionOption } from "./MarkdownEditor";
 import { OutputFeedbackButtons } from "./OutputFeedbackButtons";
 import { ApprovalCard } from "./ApprovalCard";
@@ -105,6 +105,7 @@ interface CommentThreadProps {
   onInterruptQueued?: (runId: string) => Promise<void>;
   interruptingQueuedRunId?: string | null;
   composerDisabledReason?: string | null;
+  externalReferences?: MarkdownExternalReferenceMap;
 }
 
 const DRAFT_DEBOUNCE_MS = 800;
@@ -324,6 +325,7 @@ function CommentCard({
   voting = false,
   highlightCommentId,
   queued = false,
+  externalReferences,
 }: {
   comment: CommentWithRunMeta;
   agentMap?: Map<string, Agent>;
@@ -339,6 +341,7 @@ function CommentCard({
   voting?: boolean;
   highlightCommentId?: string | null;
   queued?: boolean;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const isHighlighted = highlightCommentId === comment.id;
   const isPending = comment.clientStatus === "pending";
@@ -412,7 +415,7 @@ function CommentCard({
       {isDeleted ? (
         <div className="text-sm italic text-muted-foreground">Comment deleted</div>
       ) : (
-        <MarkdownBody className="text-sm" softBreaks>{comment.body}</MarkdownBody>
+        <MarkdownBody className="text-sm" softBreaks externalReferences={externalReferences}>{comment.body}</MarkdownBody>
       )}
       {companyId && !isPending && !isDeleted ? (
         <div className="mt-2 space-y-2">
@@ -575,6 +578,7 @@ const TimelineList = memo(function TimelineList({
   onVote,
   votingTargetId,
   highlightCommentId,
+  externalReferences,
 }: {
   timeline: TimelineItem[];
   agentMap?: Map<string, Agent>;
@@ -597,6 +601,7 @@ const TimelineList = memo(function TimelineList({
   ) => Promise<void>;
   votingTargetId?: string | null;
   highlightCommentId?: string | null;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   if (timeline.length === 0) {
     return <p className="text-sm text-muted-foreground">No timeline entries yet.</p>;
@@ -718,6 +723,7 @@ const TimelineList = memo(function TimelineList({
             onVote={onVote ? (vote, options) => onVote(comment.id, vote, options) : undefined}
             voting={votingTargetId === comment.id}
             highlightCommentId={highlightCommentId}
+            externalReferences={externalReferences}
           />
         );
       })}
@@ -756,6 +762,7 @@ export function CommentThread({
   onInterruptQueued,
   interruptingQueuedRunId = null,
   composerDisabledReason = null,
+  externalReferences,
 }: CommentThreadProps) {
   const [body, setBody] = useState("");
   const [submitting, setSubmitting] = useState(false);
@@ -974,6 +981,7 @@ export function CommentThread({
         votingTargetId={votingTargetId}
         highlightCommentId={highlightCommentId}
         feedbackTermsUrl={feedbackTermsUrl}
+        externalReferences={externalReferences}
       />
 
       {liveRunSlot}
@@ -1006,6 +1014,7 @@ export function CommentThread({
                 projectId={projectId}
                 highlightCommentId={highlightCommentId}
                 queued
+                externalReferences={externalReferences}
               />
             ))}
           </div>

ui/src/components/IssueChatThread.tsx

@@ -101,7 +101,7 @@ import {
   DropdownMenuItem,
   DropdownMenuTrigger,
 } from "@/components/ui/dropdown-menu";
-import { MarkdownBody } from "./MarkdownBody";
+import { MarkdownBody, type MarkdownExternalReferenceMap } from "./MarkdownBody";
 import { WorkspaceFileMarkdownBody } from "./WorkspaceFileMarkdownBody";
 import { MarkdownEditor, type MentionOption, type MarkdownEditorRef } from "./MarkdownEditor";
 import { Identity } from "./Identity";
@@ -217,6 +217,7 @@ interface IssueChatMessageContext {
   onUploadImage?: (file: File) => Promise<string>;
   issueStatus?: string;
   successfulRunHandoff?: SuccessfulRunHandoffState | null;
+  externalReferences?: MarkdownExternalReferenceMap;
 }
 
 const IssueChatCtx = createContext<IssueChatMessageContext>({
@@ -450,6 +451,7 @@ interface IssueChatThreadProps {
    * comment is in the loaded set before we scroll to it.
    */
   onRefreshLatestComments?: () => Promise<unknown> | void;
+  externalReferences?: MarkdownExternalReferenceMap;
 }
 
 type IssueChatErrorBoundaryProps = {
@@ -457,6 +459,7 @@ type IssueChatErrorBoundaryProps = {
   messages: readonly ThreadMessage[];
   emptyMessage: string;
   variant: "full" | "embedded";
+  externalReferences?: MarkdownExternalReferenceMap;
   children: ReactNode;
 };
 
@@ -491,6 +494,7 @@ class IssueChatErrorBoundary extends Component<IssueChatErrorBoundaryProps, Issu
           messages={this.props.messages}
           emptyMessage={this.props.emptyMessage}
           variant={this.props.variant}
+          externalReferences={this.props.externalReferences}
         />
       );
     }
@@ -555,10 +559,12 @@ function IssueChatFallbackThread({
   messages,
   emptyMessage,
   variant,
+  externalReferences,
 }: {
   messages: readonly ThreadMessage[];
   emptyMessage: string;
   variant: "full" | "embedded";
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   return (
     <div className={cn(variant === "embedded" ? "space-y-3" : "space-y-4")}>
@@ -599,7 +605,9 @@ function IssueChatFallbackThread({
                 </div>
                 <div className="space-y-2">
                   {lines.length > 0 ? lines.map((line, index) => (
-                    <MarkdownBody key={`${message.id}:fallback:${index}`}>{line}</MarkdownBody>
+                    <MarkdownBody key={`${message.id}:fallback:${index}`} externalReferences={externalReferences}>
+                      {line}
+                    </MarkdownBody>
                   )) : (
                     <p className="text-sm text-muted-foreground">No message content.</p>
                   )}
@@ -705,7 +713,7 @@ function commentDateLabel(date: Date | string | undefined): string {
 }
 
 const IssueChatTextPart = memo(function IssueChatTextPart({ text, recessed, onAccent }: { text: string; recessed?: boolean; onAccent?: boolean }) {
-  const { onImageClick } = useContext(IssueChatCtx);
+  const { onImageClick, externalReferences } = useContext(IssueChatCtx);
   if (isSuccessfulRunHandoffComment(text)) {
     return <SuccessfulRunHandoffCommentCallout text={text} recessed={recessed} onImageClick={onImageClick} />;
   }
@@ -717,6 +725,7 @@ const IssueChatTextPart = memo(function IssueChatTextPart({ text, recessed, onAc
       style={recessed ? { opacity: 0.55 } : undefined}
       softBreaks
       onImageClick={onImageClick}
+      externalReferences={externalReferences}
     >
       {text}
     </WorkspaceFileMarkdownBody>
@@ -2113,6 +2122,7 @@ function ExpiredRequestConfirmationActivity({
     onRejectInteraction,
     onCancelInteraction,
     onUploadImage,
+    externalReferences,
   } = useContext(IssueChatCtx);
   const [expanded, setExpanded] = useState(false);
   const hasResolvedActor = Boolean(interaction.resolvedByAgentId || interaction.resolvedByUserId);
@@ -2193,6 +2203,7 @@ function ExpiredRequestConfirmationActivity({
             onRejectInteraction={onRejectInteraction}
             onCancelInteraction={onCancelInteraction}
             onUploadImage={onUploadImage}
+            externalReferences={externalReferences}
           />
         </div>
       ) : null}
@@ -2620,6 +2631,7 @@ function IssueChatSystemMessage({ message }: { message: ThreadMessage }) {
     onSubmitInteractionAnswers,
     onCancelInteraction,
     onUploadImage,
+    externalReferences,
   } = useContext(IssueChatCtx);
   const custom = message.metadata.custom as Record<string, unknown>;
   const anchorId = typeof custom.anchorId === "string" ? custom.anchorId : undefined;
@@ -2677,6 +2689,7 @@ function IssueChatSystemMessage({ message }: { message: ThreadMessage }) {
             onSubmitInteractionAnswers={onSubmitInteractionAnswers}
             onCancelInteraction={onCancelInteraction}
             onUploadImage={onUploadImage}
+            externalReferences={externalReferences}
           />
         </div>
       </div>
@@ -4094,6 +4107,7 @@ export function IssueChatThread({
   assigneeUserId = null,
   onResumeFromBacklog,
   resumeFromBacklogPending = false,
+  externalReferences,
 }: IssueChatThreadProps) {
   const location = useLocation();
   const lastScrolledHashRef = useRef<string | null>(null);
@@ -4618,6 +4632,7 @@ export function IssueChatThread({
       onUploadImage: stableOnUploadImage,
       issueStatus,
       successfulRunHandoff,
+      externalReferences,
     }),
     [
       feedbackDataSharingPreference,
@@ -4643,6 +4658,7 @@ export function IssueChatThread({
       stableOnUploadImage,
       issueStatus,
       successfulRunHandoff,
+      externalReferences,
     ],
   );
 
@@ -4680,6 +4696,7 @@ export function IssueChatThread({
           messages={messages}
           emptyMessage={resolvedEmptyMessage}
           variant={variant}
+          externalReferences={externalReferences}
         >
           <div data-testid="thread-root">
             <div

ui/src/components/IssueContinuationHandoff.tsx

@@ -3,17 +3,19 @@ import type { IssueDocument } from "@paperclipai/shared";
 import { ISSUE_CONTINUATION_SUMMARY_DOCUMENT_KEY } from "@paperclipai/shared";
 import { Button } from "@/components/ui/button";
 import { cn, relativeTime } from "../lib/utils";
-import { MarkdownBody } from "./MarkdownBody";
+import { MarkdownBody, type MarkdownExternalReferenceMap } from "./MarkdownBody";
 import { Check, ChevronDown, ChevronRight, Copy, History } from "lucide-react";
 
 type IssueContinuationHandoffProps = {
   document: IssueDocument | null | undefined;
   focusSignal?: number;
+  externalReferences?: MarkdownExternalReferenceMap;
 };
 
 export function IssueContinuationHandoff({
   document,
   focusSignal = 0,
+  externalReferences,
 }: IssueContinuationHandoffProps) {
   const [expanded, setExpanded] = useState(false);
   const [copied, setCopied] = useState(false);
@@ -91,7 +93,11 @@ export function IssueContinuationHandoff({
       </div>
       {expanded ? (
         <div className="mt-3 rounded-md border border-border bg-background/80 p-3">
-          <MarkdownBody className="paperclip-edit-in-place-content text-sm leading-6" softBreaks={false}>
+          <MarkdownBody
+            className="paperclip-edit-in-place-content text-sm leading-6"
+            softBreaks={false}
+            externalReferences={externalReferences}
+          >
             {document.body}
           </MarkdownBody>
         </div>

ui/src/components/IssueDocumentsSection.test.tsx

@@ -43,8 +43,22 @@ vi.mock("@/lib/router", () => ({
 }));
 
 vi.mock("./MarkdownBody", () => ({
-  MarkdownBody: ({ children, className }: { children: string; className?: string }) => (
-    <div className={className}>{children}</div>
+  MarkdownBody: ({
+    children,
+    className,
+    externalReferences,
+  }: {
+    children: string;
+    className?: string;
+    externalReferences?: Record<string, unknown>;
+  }) => (
+    <div
+      className={className}
+      data-testid="markdown-body"
+      data-external-reference-keys={externalReferences ? Object.keys(externalReferences).join(",") : ""}
+    >
+      {children}
+    </div>
   ),
 }));
 
@@ -684,6 +698,61 @@ describe("IssueDocumentsSection", () => {
     queryClient.clear();
   });
 
+  it("forwards externalReferences to the rendered document body so URL decoration applies", async () => {
+    const issue = createIssue();
+    const root = createRoot(container);
+    const queryClient = new QueryClient({
+      defaultOptions: {
+        queries: { retry: false },
+        mutations: { retry: false },
+      },
+    });
+
+    mockIssuesApi.listDocuments.mockResolvedValue([
+      createIssueDocument({
+        body: "Linked work: https://github.com/example/repo/pull/99",
+      }),
+    ]);
+
+    await act(async () => {
+      root.render(
+        <QueryClientProvider client={queryClient}>
+          <IssueDocumentsSection
+            issue={issue}
+            canDeleteDocuments={false}
+            externalReferences={{
+              "https://github.com/example/repo/pull/99": {
+                providerKey: "github",
+                objectType: "pull_request",
+                statusCategory: "open",
+                liveness: "fresh",
+                statusLabel: "Open",
+                displayTitle: "PR #99",
+              },
+            }}
+          />
+        </QueryClientProvider>,
+      );
+    });
+    await flush();
+    await flush();
+
+    const markdownBodies = Array.from(
+      container.querySelectorAll('[data-testid="markdown-body"]'),
+    ) as HTMLElement[];
+    expect(markdownBodies.length).toBeGreaterThan(0);
+    const rendered = markdownBodies.find((element) =>
+      (element.textContent ?? "").includes("Linked work"),
+    );
+    expect(rendered?.getAttribute("data-external-reference-keys"))
+      .toContain("https://github.com/example/repo/pull/99");
+
+    await act(async () => {
+      root.unmount();
+    });
+    queryClient.clear();
+  });
+
   it("wraps the documents header actions so mobile layouts do not overflow", async () => {
     const issue = createIssue();
     const root = createRoot(container);

ui/src/components/IssueDocumentsSection.tsx

@@ -20,7 +20,7 @@ import { queryKeys } from "../lib/queryKeys";
 import { cn, relativeTime } from "../lib/utils";
 import { FoldCurtain } from "./FoldCurtain";
 import { DocumentAnnotationsCountChip, IssueDocumentAnnotations } from "./IssueDocumentAnnotations";
-import { MarkdownBody } from "./MarkdownBody";
+import { MarkdownBody, type MarkdownExternalReferenceMap } from "./MarkdownBody";
 import { MarkdownEditor, type MentionOption } from "./MarkdownEditor";
 import { OutputFeedbackButtons } from "./OutputFeedbackButtons";
 import { Button } from "@/components/ui/button";
@@ -75,10 +75,16 @@ function saveFoldedDocumentKeys(issueId: string, keys: string[]) {
   window.localStorage.setItem(getFoldedDocumentsStorageKey(issueId), JSON.stringify(keys));
 }
 
-function renderFoldableBody(body: string, className?: string) {
+function renderFoldableBody(
+  body: string,
+  className?: string,
+  externalReferences?: MarkdownExternalReferenceMap,
+) {
   return (
     <FoldCurtain>
-      <MarkdownBody className={className} softBreaks={false}>{body}</MarkdownBody>
+      <MarkdownBody className={className} softBreaks={false} externalReferences={externalReferences}>
+        {body}
+      </MarkdownBody>
     </FoldCurtain>
   );
 }
@@ -161,6 +167,7 @@ export function IssueDocumentsSection({
   defaultAnnotationPanelOpenKeys,
   defaultAnnotationFocusedThreadIds,
   forceEditDocumentKey,
+  externalReferences,
 }: {
   issue: Issue;
   canDeleteDocuments: boolean;
@@ -187,6 +194,7 @@ export function IssueDocumentsSection({
   defaultAnnotationFocusedThreadIds?: Readonly<Record<string, string>>;
   /** Force a doc into edit mode on mount (Storybook-only). */
   forceEditDocumentKey?: string | null;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const queryClient = useQueryClient();
   const location = useLocation();
@@ -878,7 +886,9 @@ export function IssueDocumentsSection({
               PLAN
             </span>
           </div>
-          {renderFoldableBody(issue.legacyPlanDocument.body, documentBodyContentClassName)}
+          <div className={documentBodyPaddingClassName}>
+            {renderFoldableBody(issue.legacyPlanDocument.body, documentBodyContentClassName, externalReferences)}
+          </div>
         </div>
       ) : null}
 
@@ -1197,7 +1207,7 @@ export function IssueDocumentsSection({
                           {!isPlanKey(doc.key) && activeConflict.serverDocument.title ? (
                             <p className="mb-2 text-sm font-medium">{activeConflict.serverDocument.title}</p>
                           ) : null}
-                          {renderFoldableBody(activeConflict.serverDocument.body, "text-[14px] leading-7")}
+                          {renderFoldableBody(activeConflict.serverDocument.body, "text-[14px] leading-7", externalReferences)}
                         </div>
                       )}
                     </div>
@@ -1235,7 +1245,7 @@ export function IssueDocumentsSection({
                       defaultFocusedThreadId={defaultAnnotationFocusedThreadIds?.[doc.key]}
                     >
                       {isHistoricalPreview ? (
-                        renderFoldableBody(displayedBody, documentBodyContentClassName)
+                        renderFoldableBody(displayedBody, documentBodyContentClassName, externalReferences)
                       ) : activeDraft ? (
                         <MarkdownEditor
                           value={displayedBody}
@@ -1257,7 +1267,7 @@ export function IssueDocumentsSection({
                           onSubmit={() => void commitDraft(activeDraft ?? draft, { clearAfterSave: false, trackAutosave: true })}
                         />
                       ) : (
-                        renderFoldableBody(displayedBody, documentBodyContentClassName)
+                        renderFoldableBody(displayedBody, documentBodyContentClassName, externalReferences)
                       )}
                     </IssueDocumentAnnotations>
                   </div>

ui/src/components/IssueThreadInteractionCard.tsx

@@ -21,7 +21,7 @@ import {
   type SuggestedTaskTreeNode,
 } from "../lib/issue-thread-interactions";
 import { cn, formatDateTime, formatShortDate } from "../lib/utils";
-import { MarkdownBody } from "./MarkdownBody";
+import { MarkdownBody, type MarkdownExternalReferenceMap } from "./MarkdownBody";
 import { Button } from "./ui/button";
 import { Checkbox } from "./ui/checkbox";
 import { PriorityIcon } from "./PriorityIcon";
@@ -58,6 +58,7 @@ interface IssueThreadInteractionCardProps {
     interaction: AskUserQuestionsInteraction,
   ) => Promise<void> | void;
   onUploadImage?: (file: File) => Promise<string>;
+  externalReferences?: MarkdownExternalReferenceMap;
 }
 
 function resolveActorLabel(args: {
@@ -706,6 +707,7 @@ function AskUserQuestionsCard({
   interaction,
   onSubmitInteractionAnswers,
   onCancelInteraction,
+  externalReferences,
 }: {
   interaction: AskUserQuestionsInteraction;
   onSubmitInteractionAnswers?: (
@@ -715,6 +717,7 @@ function AskUserQuestionsCard({
   onCancelInteraction?: (
     interaction: AskUserQuestionsInteraction,
   ) => Promise<void> | void;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const [draftAnswers, setDraftAnswers] = useState<Record<string, string[]>>(() =>
     Object.fromEntries(
@@ -1013,7 +1016,7 @@ function AskUserQuestionsCard({
               <div className="mb-2 text-[11px] font-semibold uppercase tracking-[0.16em] text-emerald-700">
                 Submitted summary
               </div>
-              <MarkdownBody>{interaction.result.summaryMarkdown}</MarkdownBody>
+              <MarkdownBody externalReferences={externalReferences}>{interaction.result.summaryMarkdown}</MarkdownBody>
             </div>
           ) : null}
         </div>
@@ -1173,6 +1176,7 @@ function RequestConfirmationCard({
   onAcceptInteraction,
   onRejectInteraction,
   onUploadImage,
+  externalReferences,
 }: {
   interaction: RequestConfirmationInteraction;
   isPlan?: boolean;
@@ -1184,6 +1188,7 @@ function RequestConfirmationCard({
     reason?: string,
   ) => Promise<void> | void;
   onUploadImage?: (file: File) => Promise<string>;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const [rejecting, setRejecting] = useState(false);
   const [working, setWorking] = useState<"accept" | "reject" | null>(null);
@@ -1283,7 +1288,7 @@ function RequestConfirmationCard({
           </div>
           {interaction.payload.detailsMarkdown ? (
             <div className="border-t border-border/60 pt-3 text-sm">
-              <MarkdownBody>{interaction.payload.detailsMarkdown}</MarkdownBody>
+              <MarkdownBody externalReferences={externalReferences}>{interaction.payload.detailsMarkdown}</MarkdownBody>
             </div>
           ) : null}
           <RequestConfirmationTargetChip
@@ -1575,6 +1580,7 @@ function RequestCheckboxConfirmationCard({
   interaction,
   onAcceptInteraction,
   onRejectInteraction,
+  externalReferences,
 }: {
   interaction: RequestCheckboxConfirmationInteraction;
   onAcceptInteraction?: (
@@ -1586,6 +1592,7 @@ function RequestCheckboxConfirmationCard({
     interaction: RequestCheckboxConfirmationInteraction,
     reason?: string,
   ) => Promise<void> | void;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const options = interaction.payload.options;
   const optionIds = useMemo(() => options.map((option) => option.id), [options]);
@@ -1721,7 +1728,7 @@ function RequestCheckboxConfirmationCard({
         <div className="text-sm leading-6 text-foreground">{interaction.payload.prompt}</div>
         {interaction.payload.detailsMarkdown ? (
           <div className="border-t border-border/60 pt-3 text-sm">
-            <MarkdownBody>{interaction.payload.detailsMarkdown}</MarkdownBody>
+            <MarkdownBody externalReferences={externalReferences}>{interaction.payload.detailsMarkdown}</MarkdownBody>
           </div>
         ) : null}
         <RequestConfirmationTargetChip
@@ -1881,6 +1888,7 @@ export function IssueThreadInteractionCard({
   onSubmitInteractionAnswers,
   onCancelInteraction,
   onUploadImage,
+  externalReferences,
 }: IssueThreadInteractionCardProps) {
   const isPlan = isPlanConfirmation(interaction);
   const planStyles = isPlan ? planStatusClasses(interaction.status) : null;
@@ -1973,12 +1981,14 @@ export function IssueThreadInteractionCard({
             interaction={interaction}
             onSubmitInteractionAnswers={onSubmitInteractionAnswers}
             onCancelInteraction={onCancelInteraction}
+            externalReferences={externalReferences}
           />
         ) : interaction.kind === "request_checkbox_confirmation" ? (
           <RequestCheckboxConfirmationCard
             interaction={interaction}
             onAcceptInteraction={onAcceptInteraction}
             onRejectInteraction={onRejectInteraction}
+            externalReferences={externalReferences}
           />
         ) : (
           <RequestConfirmationCard
@@ -1987,6 +1997,8 @@ export function IssueThreadInteractionCard({
             onAcceptInteraction={onAcceptInteraction}
             onRejectInteraction={onRejectInteraction}
             onUploadImage={onUploadImage}
+            onUploadImage={onUploadImage}
+            externalReferences={externalReferences}
           />
         )}
       </div>

ui/src/components/transcript/RunTranscriptView.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useMemo, useRef, useState } from "react";
 import type { TranscriptEntry } from "../../adapters";
-import { MarkdownBody } from "../MarkdownBody";
+import { MarkdownBody, type MarkdownExternalReferenceMap } from "../MarkdownBody";
 import { cn, formatTokens } from "../../lib/utils";
 import {
   Check,
@@ -31,6 +31,7 @@ interface RunTranscriptViewProps {
   emptyMessage?: string;
   className?: string;
   thinkingClassName?: string;
+  externalReferences?: MarkdownExternalReferenceMap;
 }
 
 type TranscriptBlock =
@@ -636,9 +637,11 @@ export function normalizeTranscript(entries: TranscriptEntry[], streaming: boole
 function TranscriptMessageBlock({
   block,
   density,
+  externalReferences,
 }: {
   block: Extract<TranscriptBlock, { type: "message" }>;
   density: TranscriptDensity;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const isAssistant = block.role === "assistant";
   const compact = density === "compact";
@@ -656,6 +659,7 @@ function TranscriptMessageBlock({
           "[&>*:first-child]:mt-0 [&>*:last-child]:mb-0",
           compact ? "text-xs leading-5 text-foreground/85" : "text-sm",
         )}
+        externalReferences={externalReferences}
       >
         {block.text}
       </MarkdownBody>
@@ -676,10 +680,12 @@ function TranscriptThinkingBlock({
   block,
   density,
   className,
+  externalReferences,
 }: {
   block: Extract<TranscriptBlock, { type: "thinking" }>;
   density: TranscriptDensity;
   className?: string;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   return (
     <MarkdownBody
@@ -688,6 +694,7 @@ function TranscriptThinkingBlock({
         density === "compact" ? "text-[11px] leading-5" : "text-sm leading-6",
         className,
       )}
+      externalReferences={externalReferences}
     >
       {block.text}
     </MarkdownBody>
@@ -1090,9 +1097,11 @@ function TranscriptActivityRow({
 function TranscriptEventRow({
   block,
   density,
+  externalReferences,
 }: {
   block: Extract<TranscriptBlock, { type: "event" }>;
   density: TranscriptDensity;
+  externalReferences?: MarkdownExternalReferenceMap;
 }) {
   const compact = density === "compact";
   const toneClasses =
@@ -1121,6 +1130,7 @@ function TranscriptEventRow({
                 "[&>*:first-child]:mt-0 [&>*:last-child]:mb-0 text-sky-700 dark:text-sky-300",
                 compact ? "text-[11px] leading-5" : "text-xs leading-5",
               )}
+              externalReferences={externalReferences}
             >
               {block.text}
             </MarkdownBody>
@@ -1473,6 +1483,7 @@ export function RunTranscriptView({
   emptyMessage = "No transcript yet.",
   className,
   thinkingClassName,
+  externalReferences,
 }: RunTranscriptViewProps) {
   const blocks = useMemo(
     () => (mode === "raw" ? [] : normalizeTranscript(entries, streaming)),
@@ -1504,9 +1515,20 @@ export function RunTranscriptView({
           key={`${block.type}-${block.ts}-${index}`}
           className={cn(index === visibleBlocks.length - 1 && streaming && "animate-in fade-in slide-in-from-bottom-1 duration-300")}
         >
-          {block.type === "message" && <TranscriptMessageBlock block={block} density={density} />}
+          {block.type === "message" && (
+            <TranscriptMessageBlock
+              block={block}
+              density={density}
+              externalReferences={externalReferences}
+            />
+          )}
           {block.type === "thinking" && (
-            <TranscriptThinkingBlock block={block} density={density} className={thinkingClassName} />
+            <TranscriptThinkingBlock
+              block={block}
+              density={density}
+              className={thinkingClassName}
+              externalReferences={externalReferences}
+            />
           )}
           {block.type === "tool" && <TranscriptToolCard block={block} density={density} />}
           {block.type === "command_group" && <TranscriptCommandGroup block={block} density={density} />}
@@ -1518,7 +1540,13 @@ export function RunTranscriptView({
             <TranscriptStdoutRow block={block} density={density} collapseByDefault={collapseStdout} />
           )}
           {block.type === "activity" && <TranscriptActivityRow block={block} density={density} />}
-          {block.type === "event" && <TranscriptEventRow block={block} density={density} />}
+          {block.type === "event" && (
+            <TranscriptEventRow
+              block={block}
+              density={density}
+              externalReferences={externalReferences}
+            />
+          )}
         </div>
       ))}
     </div>

ui/src/pages/IssueDetail.tsx

@@ -79,6 +79,7 @@ import { IssueOutputSection } from "../components/issue-output/IssueOutputSectio
 import { isImageAttachment } from "../lib/issue-attachments";
 import { getPromotedOutputAttachmentIds } from "../lib/issue-output";
 import { IssueSiblingNavigation } from "../components/IssueSiblingNavigation";
+import type { MarkdownExternalReferenceMap } from "../components/MarkdownBody";
 import { IssuesList } from "../components/IssuesList";
 import { AgentIcon } from "../components/AgentIconPicker";
 import { IssueReferenceActivitySummary } from "../components/IssueReferenceActivitySummary";
@@ -744,6 +745,7 @@ type IssueDetailChatTabProps = {
   assigneeUserId: string | null;
   onResumeFromBacklog?: () => Promise<void> | void;
   resumeFromBacklogPending?: boolean;
+  externalReferences?: MarkdownExternalReferenceMap;
 };
 
 const IssueDetailChatTab = memo(function IssueDetailChatTab({
@@ -805,6 +807,7 @@ const IssueDetailChatTab = memo(function IssueDetailChatTab({
   assigneeUserId,
   onResumeFromBacklog,
   resumeFromBacklogPending,
+  externalReferences,
 }: IssueDetailChatTabProps) {
   // Conference Room Chat experimental flag (PAP-136/PAP-139): ON renders the
   // NUX thread (bubbles, metadata rows, composer chrome); OFF renders the
@@ -1029,6 +1032,7 @@ const IssueDetailChatTab = memo(function IssueDetailChatTab({
         onResumeFromBacklog={onResumeFromBacklog}
         resumeFromBacklogPending={resumeFromBacklogPending}
         footer={footer}
+        externalReferences={externalReferences}
       />
     </div>
   );
@@ -1049,6 +1053,7 @@ type IssueDetailActivityTabProps = {
   onCheckMonitorNow: () => void;
   checkingMonitorNow: boolean;
   handoffFocusSignal?: number;
+  externalReferences?: MarkdownExternalReferenceMap;
 };
 
 function IssueDetailActivityTab({
@@ -1066,6 +1071,7 @@ function IssueDetailActivityTab({
   onCheckMonitorNow,
   checkingMonitorNow,
   handoffFocusSignal = 0,
+  externalReferences,
 }: IssueDetailActivityTabProps) {
   const { data: activity, isLoading: activityLoading } = useQuery({
     queryKey: queryKeys.issues.activity(issueId),
@@ -1267,6 +1273,11 @@ function IssueDetailActivityTab({
           }}
         />
       </div>
+      <IssueContinuationHandoff
+        document={continuationHandoff}
+        focusSignal={handoffFocusSignal}
+        externalReferences={externalReferences}
+      />
       {linkedApprovals && linkedApprovals.length > 0 && (
         <div className="mb-3 space-y-3">
           {linkedApprovals.map((approval) => (
@@ -1287,7 +1298,6 @@ function IssueDetailActivityTab({
           ))}
         </div>
       )}
-      <IssueContinuationHandoff document={continuationHandoff} focusSignal={handoffFocusSignal} />
       <IssueScheduledRetryCard issueId={issue.id} scheduledRetry={issue.scheduledRetry ?? null} />
       <IssueMonitorActivityCard
         issue={issue}
@@ -4060,6 +4070,7 @@ export function IssueDetail() {
         feedbackDataSharingPreference={feedbackDataSharingPreference}
         feedbackTermsUrl={FEEDBACK_TERMS_URL}
         mentions={mentionOptions}
+        externalReferences={externalObjectsState.markdownReferences}
         imageUploadHandler={async (file) => {
           const attachment = await uploadAttachment.mutateAsync(file);
           return attachment.contentPath;
@@ -4251,6 +4262,7 @@ export function IssueDetail() {
               resumeFromBacklogPending={
                 updateIssue.isPending && updateIssue.variables?.status === "todo"
               }
+              externalReferences={externalObjectsState.markdownReferences}
             />
           ) : null}
         </TabsContent>
@@ -4274,6 +4286,7 @@ export function IssueDetail() {
               }}
               onCheckMonitorNow={() => checkIssueMonitorNow.mutate()}
               checkingMonitorNow={checkIssueMonitorNow.isPending}
+              externalReferences={externalObjectsState.markdownReferences}
             />
           ) : null}
         </TabsContent>