test(socials): skip the PWA composer test when express is absent

apps/pwa is not a pnpm workspace package, so the root `pnpm install`
never installs its dependencies and CI's root `node --test` cannot
resolve express. The composer test imported the route module statically,
so that resolution failure crashed the file instead of skipping it.

Probe for express with createRequire and defer the route import, matching
the guard the other 38 PWA tests already use.

Author: ralyodio

apps/pwa/test/socials.test.mjs

@@ -1,24 +1,43 @@
+// Unit tests for the browser-side Nostr composer.
+//
+// Same shape as the other PWA tests: the route module pulls in express at load
+// time, so probe for it first and skip cleanly when the PWA dependencies aren't
+// installed — that keeps the root `pnpm test` green in a fresh clone.
 import assert from "node:assert/strict";
+import { createRequire } from "node:module";
 import test from "node:test";
 
-import { NOSTR_RELAYS, nostrComposerPage } from "../src/routes/socials.mjs";
+const require = createRequire(import.meta.url);
+let hasDeps = true;
+try {
+  require("express");
+} catch {
+  hasDeps = false;
+}
 
-test("Nostr composer loads the pinned NIP-07/NIP-46 bridge", () => {
-  const html = nostrComposerPage();
+const skip = hasDeps ? false : "PWA dependencies are not installed";
+
+async function composer() {
+  const { NOSTR_RELAYS, nostrComposerPage } = await import("../src/routes/socials.mjs");
+  return { NOSTR_RELAYS, html: nostrComposerPage() };
+}
+
+test("Nostr composer loads the pinned NIP-07/NIP-46 bridge", { skip }, async () => {
+  const { html } = await composer();
   assert.match(html, /window\.nostr\.js@0\.5\.0\/dist\/window\.nostr\.min\.js/);
   assert.match(html, /window\.nostr\.getPublicKey\(\)/);
   assert.match(html, /window\.nostr\.signEvent\(/);
 });
 
-test("Nostr composer creates kind-1 events and publishes to every named relay", () => {
-  const html = nostrComposerPage();
+test("Nostr composer creates kind-1 events and publishes to every named relay", { skip }, async () => {
+  const { NOSTR_RELAYS, html } = await composer();
   assert.match(html, /kind: 1/);
   assert.match(html, /\["EVENT", event\]/);
   for (const relay of NOSTR_RELAYS) assert.ok(html.includes(relay), `${relay} is not rendered`);
 });
 
-test("Nostr composer reads the draft from the fragment", () => {
-  const html = nostrComposerPage();
+test("Nostr composer reads the draft from the fragment", { skip }, async () => {
+  const { html } = await composer();
   assert.match(html, /location\.hash\.slice\(1\)/);
   assert.doesNotMatch(html, /location\.search/);
 });