Package-level declarations

Provider for read-only biometric introspection tools: CheckBiometricAvailabilityTool and GetBiometricEnrollmentsTool.

Reports which authenticator classes can currently succeed, using AndroidX BiometricManager for biometrics and KeyguardManager.isDeviceSecure for device credentials. No permissions required.

Reports which biometric modalities are present/enrolled. No permissions declared by the module (the FingerprintManager.hasEnrolledFingerprints call is wrapped in try/catch and degrades to false if access is denied; FEATURE_FACE is a hardware-feature check, not enrollment state).