9. Offline Experience

When a navigation request fails and the network is unavailable, the SW returns the configured offline URL from the opwa-offline cache.

The offline page can display:

• A custom offline message (opwa_offline_message setting)
• The 192px app icon (if offline_show_logo is enabled)
• A list of cached page titles (if offline_show_cached is enabled) — the SW reads opwa-pages cache keys and posts them back via postMessage