fix(google-meet): wrap malformed node host params

CHANGELOG.md

@@ -47,6 +47,7 @@ Docs: https://docs.openclaw.ai
 - Voice-call realtime: ignore malformed provider media-frame base64 before forwarding audio into bridge and transcription paths.
 - QQBot: reject malformed stored cron payload base64 before JSON decoding structured reminder data.
 - Telnyx voice-call: use the raw `client_state` fallback when webhook state is malformed base64 instead of using silently corrupted decoded text.
+- Google Meet: report malformed node-host params JSON with plugin-owned errors instead of leaking raw JSON parser failures.
 - Models config/auth: stop inferring provider env-var markers from broad `^[A-Z_][A-Z0-9_]*$` strings, and resolve config-backed provider `apiKey` values only through structured env SecretRefs (`secrets.providers[id]` / `secrets.defaults`), so unrelated env vars cannot accidentally become provider credentials. Thanks @sallyom.
 - Media fetch: skip allocating and buffering the response body for bodyless media responses (HEAD probes and 204-style empty bodies), avoiding wasted heap on streams that carry no payload. Thanks @shakkernerd.
 - CLI/onboarding: forward provider-specific auth flags (e.g. `--openai-api-key`) through the onboarding wizard so they reach provider auth methods via `ctx.opts`, letting `--openai-api-key "$OPENAI_API_KEY"` skip the redundant "use existing env var?" prompt in non-interactive harnesses. (#81669) Thanks @sjf.

extensions/google-meet/node-host.test.ts

@@ -51,6 +51,14 @@ describe("google-meet node host bridge sessions", () => {
     vi.resetModules();
   });
 
+  it("reports malformed params JSON with an owned error", async () => {
+    const { handleGoogleMeetNodeHostCommand } = await import("./src/node-host.js");
+
+    await expect(handleGoogleMeetNodeHostCommand("{not json")).rejects.toThrow(
+      "Google Meet node host received malformed params JSON.",
+    );
+  });
+
   it("starts observe-only Chrome without BlackHole or bridge processes", async () => {
     const { handleGoogleMeetNodeHostCommand } = await import("./src/node-host.js");
     const originalPlatform = process.platform;

extensions/google-meet/src/node-host.ts

@@ -473,7 +473,14 @@ function stopChrome(params: Record<string, unknown>) {
 }
 
 export async function handleGoogleMeetNodeHostCommand(paramsJSON?: string | null): Promise<string> {
-  const raw = paramsJSON ? JSON.parse(paramsJSON) : {};
+  let raw: unknown = {};
+  if (paramsJSON) {
+    try {
+      raw = JSON.parse(paramsJSON) as unknown;
+    } catch {
+      throw new Error("Google Meet node host received malformed params JSON.");
+    }
+  }
   const params = asRecord(raw);
   const action = readString(params.action);
   let result: unknown;