build: lnurlcash-kit fork dependency, pwa tooling and test config

vitest.config.ts

@@ -2,12 +2,10 @@ import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
-    // the tested modules are pure crypto/codec helpers - node's own
-    // WebCrypto (crypto.subtle) covers everything they need, no jsdom
+    // the tested modules are pure crypto/codec/protocol logic - node's own
+    // WebCrypto (crypto.subtle) and fetch cover everything they need, no
+    // jsdom. The ops suite spins real mock-mint HTTP servers on loopback.
     environment: 'node',
     include: ['src/**/*.test.ts'],
-    // protocol tests live in lnurlcash-kit (its conformance suite); app tests
-    // arrive with M2 flows. Don't fail CI until then.
-    passWithNoTests: true,
   },
 });