Fix Antigravity model list and enhance clipboard-guided handoff UX

test/api.test.js

@@ -269,6 +269,24 @@ test("Development Handoff endpoint compiles full Spark spec and submits to Antig
   assert.equal(handoffData.handoff.model, "gpt-5.6-sol");
   assert.match(handoffData.handoff.deepLinkUrl, /^codex:\/\/threads\/new/);
   assert.equal(handoffData.idea.status, "building");
+
+  // Verify Antigravity handoff with updated models (Gemini 3.8 Flash default)
+  const agyRes = await fetch(`${baseUrl}/api/ideas/1/dev-handoff`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      targetApp: "antigravity",
+      model: "gemini-3.8-flash",
+      includeHomelab: true,
+      moveStatusToBuilding: true
+    })
+  });
+  assert.equal(agyRes.status, 200);
+  const agyData = await agyRes.json();
+  assert.equal(agyData.handoff.targetApp, "antigravity");
+  assert.equal(agyData.handoff.model, "gemini-3.8-flash");
+  assert.equal(agyData.handoff.modelLabel, "Gemini 3.8 Flash (Medium)");
+  assert.match(agyData.handoff.deepLinkUrl, /^antigravity:\/\/new\?model=gemini-3\.8-flash/);
 });