feat: establish unified administration and model context baseline

frontend/src/shell/f1-loop.test.tsx

@@ -4,6 +4,7 @@ import userEvent from "@testing-library/user-event";
 import { http, HttpResponse } from "msw";
 import { act } from "react";
 import { server } from "../test/msw";
+import { workspaceSummaryFixture } from "../test/workspace-fixtures";
 import { FakeEventSource } from "../test/fakeEventSource";
 import { App } from "../App";
 import { useSessionStore } from "../store/sessionStore";
@@ -23,8 +24,8 @@ test("F1: create session -> widget via SSE -> respond -> POST /response", async
     http.get("/api/settings", () => HttpResponse.json({
       workspace: "default", provider: "zai", model: "glm-5.2", thinking: "low",
     })),
-    http.get("/api/workspaces", () => HttpResponse.json([])),
-    http.get("/api/models", () => HttpResponse.json({ models: [] })),
+    http.get("/api/workspaces", () => HttpResponse.json([workspaceSummaryFixture("default")])),
+    http.get("/api/models", () => HttpResponse.json({ models: [{ provider: "zai", id: "glm-5.2", name: "GLM 5.2", reasoning: true }] })),
     http.post("/api/sessions/s1/response", async ({ request }) => {
       responded = await request.json();
       return new HttpResponse(null, { status: 204 });