Fix ideation artifact pane hydration

frontend/src/components/agents/AgentsArtifactPane.test.tsx

@@ -367,7 +367,7 @@ function deferred<T>() {
 
 function renderPane(
   activeTab: AgentArtifactTab = "tasks",
-  paneWorkspace = workspace(),
+  paneWorkspace: AgentConversationWorkspace | null = workspace(),
   onPublishWorkspace = vi.fn(),
   isPublishingWorkspace = false,
   paneConversation = null,
@@ -629,6 +629,72 @@ describe("AgentsArtifactPane", () => {
     useUiStore.setState({ activeModal: null, modalContext: undefined });
   });
 
+  it("hydrates plan artifacts for an ideation conversation without a workspace link", async () => {
+    getIdeationSessionMock.mockResolvedValue({
+      session: {
+        id: "session-1",
+        projectId: "project-1",
+        title: "Planning session",
+        titleSource: "auto",
+        status: "active",
+        planArtifactId: null,
+        seedTaskId: null,
+        parentSessionId: null,
+        teamMode: null,
+        teamConfig: null,
+        createdAt: "2026-04-23T09:00:00Z",
+        updatedAt: "2026-04-23T09:00:00Z",
+        archivedAt: null,
+        convertedAt: null,
+        verificationStatus: "unverified",
+        verificationInProgress: false,
+        gapScore: null,
+        inheritedPlanArtifactId: null,
+        sessionPurpose: "general",
+        sessionFlow: "planning",
+        acceptanceStatus: null,
+      },
+      proposals: [],
+      messages: [],
+    });
+    getSessionPlanMock.mockResolvedValue({
+      id: "artifact-1",
+      type: "specification",
+      name: "Implementation Plan",
+      content: {
+        type: "inline",
+        text: "# Implementation Plan\n\nDo the work.",
+      },
+      metadata: {
+        createdAt: "2026-04-23T09:00:00Z",
+        createdBy: "orchestrator",
+        version: 1,
+      },
+      derivedFrom: [],
+      bucketId: "prd-library",
+      planApproval: {
+        status: "draft",
+      },
+    });
+
+    renderPane(
+      "plan",
+      null,
+      vi.fn(),
+      false,
+      {
+        ...conversation(),
+        contextType: "ideation",
+        contextId: "session-1",
+        agentMode: "ideation",
+      },
+    );
+
+    await waitFor(() => expect(getIdeationSessionMock).toHaveBeenCalledWith("session-1"));
+    await waitFor(() => expect(getSessionPlanMock).toHaveBeenCalledWith("session-1"));
+    expect(screen.queryByText("No plan yet")).not.toBeInTheDocument();
+  });
+
   it("anchors the active tab border to the bottom edge of the tab bar", async () => {
     getIdeationSessionMock.mockResolvedValue({
       session: {

frontend/src/components/agents/AgentsArtifactPane.tsx

@@ -221,7 +221,8 @@ export const AgentsArtifactPane = memo(function AgentsArtifactPane({
 }: AgentsArtifactPaneProps) {
   const queryClient = useQueryClient();
   const canHydrateIdeationArtifacts = Boolean(
-    focusedIdeationSessionId ||
+    conversation?.contextType === "ideation" ||
+      focusedIdeationSessionId ||
       workspace?.mode === "ideation" ||
       workspace?.mode === "plan" ||
       workspace?.linkedIdeationSessionId ||