feat(webui): refine output timeline and model controls (#4108)

* feat(webui): refine output timeline and composer queue

* feat(webui): add provider model picker

* fix(webui): polish model settings and heartbeat checks

* chore: keep heartbeat changes out of webui pr

* refactor(webui): isolate settings routes

* fix(providers): align minimax anthropic test

* fix(providers): keep minimax anthropic base sdk-compatible

* fix(providers): normalize anthropic base urls

webui/src/tests/api.test.ts

@@ -5,6 +5,7 @@ import {
   deleteSession,
   fetchCliApps,
   fetchMcpPresets,
+  fetchProviderModels,
   fetchSidebarState,
   fetchWebuiThread,
   fetchWorkspaces,
@@ -165,6 +166,17 @@ describe("webui API helpers", () => {
     );
   });
 
+  it("fetches provider model lists", async () => {
+    await fetchProviderModels("tok", "deepseek");
+
+    expect(fetch).toHaveBeenCalledWith(
+      "/api/settings/provider-models?provider=deepseek",
+      expect.objectContaining({
+        headers: { Authorization: "Bearer tok" },
+      }),
+    );
+  });
+
   it("serializes provider OAuth login and logout actions", async () => {
     await loginProviderOAuth("tok", "openai_codex");
     expect(fetch).toHaveBeenCalledWith(