fix: keep slash command model qualification on rebase

ui/src/ui/chat/slash-command-executor.node.test.ts

@@ -277,11 +277,6 @@ describe("executeSlashCommand directives", () => {
           },
         };
       }
-      if (method === "models.list") {
-        return {
-          models: [{ id: "gpt-5-mini", provider: "openai" }],
-        };
-      }
       throw new Error(`unexpected method: ${method}`);
     });
 
@@ -290,13 +285,13 @@ describe("executeSlashCommand directives", () => {
       "main",
       "model",
       "gpt-5-mini",
+      [{ id: "gpt-5-mini", name: "gpt-5-mini", provider: "openai" }],
     );
 
-    expect(request).toHaveBeenNthCalledWith(1, "sessions.patch", {
+    expect(request).toHaveBeenCalledWith("sessions.patch", {
       key: "main",
       model: "gpt-5-mini",
     });
-    expect(request).toHaveBeenNthCalledWith(2, "models.list", {});
     expect(result.sessionPatch?.modelOverride).toEqual({
       kind: "qualified",
       value: "openai/gpt-5-mini",

ui/src/ui/chat/slash-command-executor.ts

@@ -157,13 +157,10 @@ async function executeModel(
   }
 
   try {
-    const [patched, models] = await Promise.all([
-      client.request<SessionsPatchResult>("sessions.patch", {
-        key: sessionKey,
-        model: args.trim(),
-      }),
-      client.request<{ models: ModelCatalogEntry[] }>("models.list", {}),
-    ]);
+    const patched = await client.request<SessionsPatchResult>("sessions.patch", {
+      key: sessionKey,
+      model: args.trim(),
+    });
     const patchedModel = patched.resolved?.model ?? args.trim();
     const rawOverride = createChatModelOverride(patchedModel.trim());
     const resolvedValue = rawOverride