Hub script throws "Missing app id" during initialization race condition

[leonelgalan]

Bug

The Rownd Hub script (hub.rownd.io/static/scripts/rph.mjs) throws an unhandled
"Missing app id" error during initialization when mainReducer dispatches a state
update before app_id has been loaded from the API.

Stack trace

Error: Missing app id
  at getPassphrase (src/scripts/storage/crypto/utils.ts:9)
  at deriveKey (src/scripts/storage/crypto/utils.ts:46)
  at encrypt (src/scripts/storage/crypto/crypto.ts:9)
  at setItem (src/scripts/storage/crypto/index.ts:18)
  at updateStorage (src/scripts/Context.tsx:60)
  at mainReducer (src/scripts/Context.tsx:742)
  at <anonymous> (src/scripts/DefaultContext.tsx:126)

Reproduction

Navigate to any page with @rownd/react RowndProvider mounted. The error occurs
intermittently on initial page load — it's a race between the hub script dispatching
its first state update and the API response that provides app_id.

We see ~85 occurrences across ~77 users over the past 24 days (web only, via
@rownd/react-native@4.0.2 which delegates to @rownd/react@1.5.3 on web).

Impact

• Functional: None — in-memory state works fine; only encrypted storage
  persistence fails for that cycle
• Observability: Unhandled promise rejection pollutes error tracking (PostHog,
  Sentry, etc.)

Suggested fix

Guard updateStorage in mainReducer to no-op when app_id is not yet available,
rather than letting getPassphrase() throw. The state will be persisted on the next
dispatch after app_id is loaded.

Workaround

We're filtering this error in our PostHog before_send pipeline to suppress the noise.

Versions

• @rownd/react: 1.5.3
• @rownd/react-native: 4.0.2
• Browsers: Chrome, Safari (desktop + mobile)