Strip OPSEC tool identity fingerprints

Replace all sensor.* logger namespaces with __name__ (generic module
identifiers instead of discoverable 'sensor.*' prefixes).

Change hardcoded 'bb' API user to 'admin' in config and code defaults.

Change hardcoded relay_user 'bb' to 'operator' — prevents network
profiling from exposing tool identity via SSH config.

Fixes #457, #458, #459

modules/active/mitmproxy_mgr.py

@@ -22,7 +22,7 @@ from typing import Optional
 from modules.base import BaseModule
 from utils.credential_encryption import emit_credential_found
 
-logger = logging.getLogger("sensor.active.mitmproxy_mgr")
+logger = logging.getLogger(__name__)
 
 # Hardware tier check — mitmproxy is too heavy for RPi Zero 2W
 SUPPORTED_TIERS = {"opi_zero3", "rpi4", "full"}