web_update_guard 0.1.0

Stop Flutter web users running stale cached builds. A CLI stamps and cache-busts build/web; a runtime guard detects new deploys and reloads cleanly.

0.1.0

• Initial release.
• dart run web_update_guard stamp build/web: content-hash + timestamp build ID, version.json (merged with Flutter's own keys), ?v=<buildId> cache-busting of main.dart.js, flutter_bootstrap.js, flutter.js, main.dart.wasm and main.dart.mjs, build-ID <meta> tag. Idempotent.
• WebUpdateGuard: polling, focus / visibility checks, no-store + cache-busted version.json fetch, Stream<UpdateStatus>, checkNow(), applyUpdate() (unregister service workers, clear CacheStorage, refresh the document, reload), auto-reload policies never / whenIdle / immediately, reload-loop guard. No-op (unsupported) off the web.
• Widgets: UpdateBanner (inline MaterialBanner or custom builder) and WebUpdateListener (SnackBar / MaterialBanner via ScaffoldMessenger).