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

core/state.py

@@ -16,7 +16,7 @@ import logging
 from typing import Any, Optional
 from pathlib import Path
 
-logger = logging.getLogger("sensor.state")
+logger = logging.getLogger(__name__)
 
 _DEFAULT_DB = os.path.join(
     os.path.expanduser("~"), ".implant", "state.db"