fix(pwa): disable service worker in dev across all 8 vite configs

Was: every standalone (and the hub) registered a service worker
during \`npm run dev\` via VitePWA's devOptions.enabled = true.

Problem: the dev SW caches index.html and the JS bundle on first
load and survives across vite restarts. Any code change that
required a server restart (e.g. fixing a vite.config.ts merge
conflict) resulted in browsers continuing to serve the cached
pre-restart bundle until the user manually unregistered the SW.
This caused the hub at localhost:5173 to redirect to /market on
refresh — the cached bundle was from the broken-config period
which still had the old monolithic main app's market route.

PWA features (offline, install prompts, manifest) are still tested
by running:
  npm run preview            # for the hub
  npm run preview:<name>     # for any standalone

against a real production build, which is the more accurate
environment for PWA verification anyway.

Recovery for anyone with a stale SW lingering in their browser
(needed once after pulling, then never again):
  1. DevTools → Application → Service Workers → Unregister
  2. DevTools → Application → Storage → Clear site data
  3. Hard reload (Ctrl-Shift-R)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vite.forum.config.ts

@@ -45,7 +45,7 @@ export default defineConfig(({ mode }) => ({
     tailwindcss(),
     VitePWA({
       registerType: 'autoUpdate',
-      devOptions: { enabled: true },
+      devOptions: { enabled: false },
       workbox: {
         globPatterns: ['**/*.{js,css,html,ico,png,svg}'],
         navigateFallback: 'forum.html',