feat(capture): add minimal browser extension

browser-extension/tests/capture-url.test.mjs

@@ -0,0 +1,23 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { buildCaptureUrl } from "../capture-url.mjs";
+
+test("builds the existing reviewed capture route", () => {
+  const result = new URL(buildCaptureUrl("https://example.test/jobs/42?from=search"));
+  assert.equal(result.origin, "https://jobs.cesnimda.uk");
+  assert.equal(result.pathname, "/");
+  assert.equal(result.searchParams.get("add"), "https://example.test/jobs/42?from=search");
+});
+
+test("rejects privileged and malformed URLs", () => {
+  assert.equal(buildCaptureUrl("chrome://settings"), null);
+  assert.equal(buildCaptureUrl("javascript:alert(1)"), null);
+  assert.equal(buildCaptureUrl("not a url"), null);
+});
+
+test("supports a local application origin during development", () => {
+  assert.equal(
+    buildCaptureUrl("https://arbeidsplassen.nav.no/stillinger/stilling/abc", "http://localhost:3300"),
+    "http://localhost:3300/?add=https%3A%2F%2Farbeidsplassen.nav.no%2Fstillinger%2Fstilling%2Fabc"
+  );
+});