fix: remove redundant no-commands log lines; fix skip_reason docstring style

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hbd/client/plugin.py

@@ -29,7 +29,7 @@ class Plugin(ABC):
         description: Human-readable description
         interval: Collection interval in seconds (0 for InfoPlugin = collect once)
         enabled: Whether plugin is active (can be disabled via config)
-        skip_reason: Optional[str] = None  # Set before returning False from initialize() so loader logs INFO not WARNING
+        skip_reason: Set by plugin before returning False from initialize(); causes loader to log INFO instead of WARNING.
     """
     
     name: str = ""