app: fix Playwright E2E WebSocket errors on Node 20 + fix format

E2E helpers used DaemonClient without a webSocketFactory, which relies
on globalThis.WebSocket — unavailable in Node 20 (CI). Add a shared
node-ws-factory helper using the ws package (matching the CLI pattern)
and inject it in all three E2E connection helpers. Also fix a biome
formatting issue in the cli provider test.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/cli/tests/15-provider.test.ts

@@ -230,8 +230,7 @@ try {
     assert(
       ids.some(
         (id) =>
-          (id.startsWith("openai/") || id.startsWith("openrouter/openai/")) &&
-          id.includes("codex"),
+          (id.startsWith("openai/") || id.startsWith("openrouter/openai/")) && id.includes("codex"),
       ),
       "opencode output should include at least one codex-optimized OpenAI model",
     );