diff --git a/src/components/official-library-panel.test.ts b/src/components/official-library-panel.test.ts
index 4f6a4e7..8131eb0 100644
--- a/src/components/official-library-panel.test.ts
+++ b/src/components/official-library-panel.test.ts
@@ -45,6 +45,38 @@ describe("OfficialLibraryPanel", () => {
     expect(screen.getByText("spacex-s1.pdf")).toBeTruthy();
   });
 
+  it("keeps file add actions visible on mobile", () => {
+    render(
+      React.createElement(OfficialLibraryPanel, {
+        officialLibrarySources: [
+          {
+            librarySourceId: "financial-spacex-s1",
+            categoryId: "financial-reports",
+            categoryLabel: "Financial Reports",
+            title: "spacex-s1.pdf",
+            sourceUrl: "https://example.com/spacex-s1.pdf",
+            mimeType: "application/pdf",
+            status: "ready",
+            demoSourceId: "demo-spacex-s1",
+            chunkCount: 922,
+          },
+        ],
+        onOfficialLibrarySourceAdd: vi.fn(),
+      }),
+    );
+
+    fireEvent.click(
+      screen.getByRole("button", { name: "Open Financial Reports" }),
+    );
+
+    const addButton = screen.getByRole("button", {
+      name: "Add spacex-s1.pdf to sources",
+    });
+
+    expect(addButton.className).toContain("opacity-100");
+    expect(addButton.className).toContain("min-[1116px]:opacity-0");
+  });
+
   it("opens to the all-categories view", () => {
     render(
       React.createElement(OfficialLibraryPanel, {
diff --git a/src/components/official-library-panel.tsx b/src/components/official-library-panel.tsx
index 2483204..8ab70f8 100644
--- a/src/components/official-library-panel.tsx
+++ b/src/components/official-library-panel.tsx
@@ -199,7 +199,7 @@ function OfficialLibraryCard({
               type="button"
               disabled={!canAdd || isAdding}
               onClick={onAdd}
-              className="absolute right-3 top-1 inline-flex size-6 items-center justify-center rounded-md text-muted-foreground opacity-0 transition-opacity hover:bg-background hover:text-foreground group-hover:opacity-100 focus:opacity-100 disabled:cursor-not-allowed disabled:opacity-40"
+              className="absolute right-3 top-1 inline-flex size-6 items-center justify-center rounded-md bg-background/95 text-muted-foreground opacity-100 shadow-xs transition-opacity hover:bg-background hover:text-foreground focus:opacity-100 disabled:cursor-not-allowed disabled:opacity-40 min-[1116px]:bg-transparent min-[1116px]:opacity-0 min-[1116px]:shadow-none min-[1116px]:group-hover:opacity-100"
               aria-label={`Add ${item.title} to sources`}
             >
               {isAdding ? <Spinner className="size-3.5" /> : <Plus className="size-4" />}
diff --git a/src/domains/workspace/initial-state.test.ts b/src/domains/workspace/initial-state.test.ts
index 02d3914..ba73f91 100644
--- a/src/domains/workspace/initial-state.test.ts
+++ b/src/domains/workspace/initial-state.test.ts
@@ -74,15 +74,6 @@ describe("loadWorkspaceShellInitialState", () => {
         demoSourceId: "demo-tsla-q4-2025",
         chunkCount: 70,
       },
-      {
-        librarySourceId: "stem-transformers",
-        categoryId: "stem-books",
-        categoryLabel: "STEM books",
-        title: "Transformers.pdf",
-        sourceUrl: "https://example.com/transformers.pdf",
-        mimeType: "application/pdf",
-        status: "planned",
-      },
     ])
     expect(state.chatMessages).toEqual([
       {
diff --git a/src/domains/workspace/initial-state.ts b/src/domains/workspace/initial-state.ts
index 02836aa..a407b71 100644
--- a/src/domains/workspace/initial-state.ts
+++ b/src/domains/workspace/initial-state.ts
@@ -29,7 +29,11 @@ import type {
   Source,
   Workspace,
 } from "@/infrastructure/db/schema"
-import { knowhereDemoApi, type DemoCatalog } from "@/integrations/knowhere-demo"
+import {
+  knowhereDemoApi,
+  type DemoCatalog,
+  type OfficialLibrarySource,
+} from "@/integrations/knowhere-demo"
 import { effectOperation } from "@/lib/effect-operation"
 import { notebookRequestContext } from "./request-context"
 
@@ -369,15 +373,29 @@ function toOfficialLibrarySourceViews(
       category.label,
     ]),
   )
-  return catalog.officialLibrary.sources.map((source) => ({
-    librarySourceId: source.librarySourceId,
-    categoryId: source.categoryId,
-    categoryLabel: categoryLabelById.get(source.categoryId) ?? source.categoryId,
-    title: source.title,
-    sourceUrl: source.sourceUrl,
-    mimeType: source.mimeType,
-    status: source.status,
-    ...(source.demoSourceId ? { demoSourceId: source.demoSourceId } : {}),
-    ...(source.chunkCount !== undefined ? { chunkCount: source.chunkCount } : {}),
-  }))
+  return catalog.officialLibrary.sources
+    .filter(isReadyOfficialLibrarySource)
+    .map((source) => ({
+      librarySourceId: source.librarySourceId,
+      categoryId: source.categoryId,
+      categoryLabel:
+        categoryLabelById.get(source.categoryId) ?? source.categoryId,
+      title: source.title,
+      sourceUrl: source.sourceUrl,
+      mimeType: source.mimeType,
+      status: source.status,
+      demoSourceId: source.demoSourceId,
+      ...(source.chunkCount !== undefined
+        ? { chunkCount: source.chunkCount }
+        : {}),
+    }))
+}
+
+function isReadyOfficialLibrarySource(
+  source: OfficialLibrarySource,
+): source is OfficialLibrarySource & {
+  readonly status: "ready"
+  readonly demoSourceId: string
+} {
+  return source.status === "ready" && source.demoSourceId !== undefined
 }