SystemInfoCollector
Passive collector for SignalCategory.SystemInfo.
Reports OS version/patch, boot recency, device name, ADB/developer-options flags, lock screen & biometric availability, form-factor flags, ROM family/spoofing hints, and personalization signals (ringtone, notification sound, wallpaper hash, NFC state).
Privacy: mostly aggregate OS/config metadata; the device name may identify the owner and the wallpaper is hashed. All reads are passive (no runtime permission).
APIs probed: Build.VERSION, Settings.Global, KeyguardManager, BiometricManager, PackageManager features, RomCompatibility.