Function checkPasskeyCapabilities

checkPasskeyCapabilities(): Promise<PasskeyCapabilities>
Check browser passkey + PRF support.

In non-browser environments (Node.js), all capabilities return false. PRF support is detected by checking PublicKeyCredential availability and attempting a PRF probe if possible.

Returns Promise<PasskeyCapabilities>
- Defined in lv-encrypter/packages/webauthn/src/capabilities.ts:14