[Init] Initial commit - NetMesh terminal manager

electron/plugins/fixtures/browser-runtime-plugin/index.js

@@ -0,0 +1,31 @@
+import { definePlugin } from "@netcatty/plugin-sdk";
+
+export default definePlugin({
+  async activate(context) {
+    for (const capability of [
+      "fetch",
+      "RTCPeerConnection",
+      "WebSocket",
+      "WebTransport",
+      "Worker",
+    ]) {
+      if (globalThis[capability] !== undefined) {
+        throw new Error(`Direct browser capability remains exposed: ${capability}`);
+      }
+    }
+    const iframe = document.createElement("iframe");
+    document.body.append(iframe);
+    let childNetworkBlocked = false;
+    try {
+      await iframe.contentWindow.fetch("https://netcatty-plugin-smoke.invalid/");
+    } catch {
+      childNetworkBlocked = true;
+    } finally {
+      iframe.remove();
+    }
+    if (!childNetworkBlocked) {
+      throw new Error("Child browsing context bypassed the offline plugin session");
+    }
+    await context.storage.set("smoke.activation", { kind: "browser", ready: true });
+  },
+});