diff --git a/src/viewer/index.html b/src/viewer/index.html
index d43d3f9e5..db0b5100c 100644
--- a/src/viewer/index.html
+++ b/src/viewer/index.html
@@ -1550,10 +1550,8 @@ <h1>agentmemory</h1>
       html += '<div class="stats-grid">';
       html += '<div class="stat-card" data-action="goto-tab" data-tab="sessions" role="link" tabindex="0"><div class="label">Sessions</div><div class="value">' + d.sessions.length + '</div><div class="sub">' + activeSessions + ' active</div></div>';
       html += '<div class="stat-card" data-action="goto-tab" data-tab="memories" role="link" tabindex="0"><div class="label">Memories</div><div class="value">' + d.memories.length + '</div><div class="sub">latest versions</div></div>';
-      var lessonCount = (d.lessons || []).length;
-      var crystalCount = (d.crystals || []).length;
-      html += '<div class="stat-card" data-action="goto-tab" data-tab="lessons" role="link" tabindex="0"><div class="label">Lessons</div><div class="value">' + lessonCount + '</div><div class="sub">confidence-scored</div></div>';
-      html += '<div class="stat-card" data-action="goto-tab" data-tab="crystals" role="link" tabindex="0"><div class="label">Crystals</div><div class="value">' + crystalCount + '</div><div class="sub">action digests</div></div>';
+      html += '<div class="stat-card" data-action="goto-tab" data-tab="lessons" role="link" tabindex="0"><div class="label">Lessons</div><div class="value">&mdash;</div><div class="sub">load tab to view</div></div>';
+      html += '<div class="stat-card" data-action="goto-tab" data-tab="crystals" role="link" tabindex="0"><div class="label">Crystals</div><div class="value">&mdash;</div><div class="sub">load tab to view</div></div>';
       html += '<div class="stat-card" data-action="goto-tab" data-tab="graph" role="link" tabindex="0"><div class="label">Graph Nodes</div><div class="value">' + nodeCount + '</div><div class="sub">' + edgeCount + ' edges</div></div>';
       html += '<div class="stat-card"><div class="label">Health</div><div class="value"><div class="health-bar"><span class="health-dot ' + dotClass + '"></span> ' + esc(healthStatus) + '</div></div>';
       html += '<div class="sub">' + esc(snap.connectionState || 'unknown') + '</div></div>';
diff --git a/test/viewer-session-id.test.ts b/test/viewer-session-id.test.ts
index 292e1bd32..5bb5b18ef 100644
--- a/test/viewer-session-id.test.ts
+++ b/test/viewer-session-id.test.ts
@@ -226,6 +226,16 @@ describe("viewer session rendering", () => {
     expect(paths).toHaveLength(10);
   });
 
+  it("marks lesson and crystal counts as deferred", () => {
+    const { sandbox, getElement } = loadViewerSandbox();
+
+    sandbox.renderDashboard();
+
+    const html = getElement("view-dashboard").innerHTML;
+    expect(html).toContain('<div class="label">Lessons</div><div class="value">&mdash;</div>');
+    expect(html).toContain('<div class="label">Crystals</div><div class="value">&mdash;</div>');
+  });
+
   it("attaches the saved viewer bearer to API calls", async () => {
     const { sandbox } = loadViewerSandbox();
     const requests: Array<{ url: string; opts: { headers?: Record<string, string> } }> = [];