Passkeys in the WebView builds: the apps name v3.coinos.io too, and a failed passkey sign-in no longer goes on to make a new one. Coinos Beta's passkey sign-in failed after the account was picked — "CredMan getCredential call failed … RP ID cannot be validated" (Pixel 9, 2026-11-06). An app's association with a site runs both ways: the site's assetlinks.json names the app (it did), and the app's manifest names the site through asset_statements meta-data — which the TWA has and the webview/fcm manifests didn't. They declare it now, and the shared asset_statements string carries get_login_creds beside handle_all_urls. And passkeyLogin rolled any sign-in failure into creating a passkey, so the validation error was followed by a second, failed create dialog: only NotAllowedError (how browsers report "no passkey here", or a dismissed sheet) leads to creating one now; any other error is shown

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01VMan6Ts5Tktega8VbLg31q

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