### Fixes

- Control UI/Talk: make failed Talk startup errors dismissable and clear the stale Talk error state when dismissed, so missing realtime voice provider configuration does not leave a permanent chat banner. Fixes #77071. Thanks @ijoshdavis.

- Control UI/Talk: stop and clear failed realtime Talk sessions when dismissing runtime error banners, so the next Talk click starts a fresh session instead of only stopping the stale one. Thanks @vincentkoc.

- Google Chat: create an isolated Google auth transport per auth client, so google-auth-library interceptor mutations do not accumulate across webhook verification and access-token clients. Thanks @vincentkoc.

- Control UI/performance: cap long-task and long-animation-frame diagnostics in the shared event log, so slow-render telemetry does not evict gateway/plugin events from the Debug and Overview views. Thanks @vincentkoc.

- Web fetch: late-bind `web_fetch` config and provider fallback metadata from the active runtime snapshot, matching `web_search` so long-lived tools do not use stale fetch provider settings. Thanks @vincentkoc.

describe("dismissChatError", () => {

it("clears persistent Talk error state", () => {

const stop = vi.fn();

const state = {

lastError: 'Realtime voice provider "openai" is not configured',

lastErrorCode: "UNAVAILABLE",

realtimeTalkActive: false,

realtimeTalkActive: true,

realtimeTalkSession: { stop },

realtimeTalkStatus: "error",

realtimeTalkDetail: 'Realtime voice provider "openai" is not configured',

realtimeTalkTranscript: "partial transcript",

} as AppViewState;

} as unknown as AppViewState & { realtimeTalkSession: { stop(): void } | null };

dismissChatError(state);

expect(state.lastError).toBeNull();

expect(state.lastErrorCode).toBeNull();

expect(stop).toHaveBeenCalledOnce();

expect(state.realtimeTalkSession).toBeNull();

expect(state.realtimeTalkActive).toBe(false);

expect(state.realtimeTalkStatus).toBe("idle");

expect(state.realtimeTalkDetail).toBeNull();

state.lastError = null;

state.lastErrorCode = null;

if (state.realtimeTalkStatus === "error") {

const talkHost = state as unknown as {

realtimeTalkSession?: { stop(): void } | null;

};

talkHost.realtimeTalkSession?.stop();

talkHost.realtimeTalkSession = null;

state.realtimeTalkActive = false;

state.realtimeTalkStatus = "idle";

state.realtimeTalkDetail = null;