Track HiveGrid Cloud planning reference

hivegrid-cloud/apps/web/embed/widget-loader.test.ts

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+import { describe, expect, it } from "vitest";
+import { readFileSync, statSync } from "node:fs";
+import { gzipSync } from "node:zlib";
+import { fileURLToPath } from "node:url";
+import { dirname, join } from "node:path";
+
+const here = dirname(fileURLToPath(import.meta.url));
+const widgetPath = join(here, "..", "public", "embed", "widget.js");
+
+describe("widget.js bootstrap loader", () => {
+  it("is checked into apps/web/public/embed/widget.js", () => {
+    expect(statSync(widgetPath).isFile()).toBe(true);
+  });
+
+  it("stays under the 3KB gzipped budget", () => {
+    const raw = readFileSync(widgetPath);
+    const gz = gzipSync(raw);
+    // 3 KB = 3 * 1024 = 3072 bytes
+    expect(gz.byteLength).toBeLessThan(3072);
+  });
+
+  it("stays under the 5KB raw budget", () => {
+    const raw = readFileSync(widgetPath);
+    expect(raw.byteLength).toBeLessThan(5 * 1024);
+  });
+
+  it("references the embed forms route path", () => {
+    const text = readFileSync(widgetPath, "utf8");
+    expect(text).toContain("/embed/forms/");
+  });
+
+  it("uses a sandboxed iframe", () => {
+    const text = readFileSync(widgetPath, "utf8");
+    expect(text).toContain("sandbox");
+    expect(text).toContain("allow-scripts");
+  });
+
+  it("listens for postMessage resize / submitted / error events", () => {
+    const text = readFileSync(widgetPath, "utf8");
+    expect(text).toContain("tcform:resize");
+    expect(text).toContain("tcform:submitted");
+    expect(text).toContain("tcform:error");
+  });
+});