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 = ""

hbd/client/plugins/nagios_runner.py

@@ -78,12 +78,6 @@ class NagiosRunnerPlugin(MonitorPlugin):
         self.timeout: int = config.get("timeout", 30) if config else 30
         self.shell: bool = config.get("shell", True) if config else True
         self.interval = config.get("interval", 300) if config else 300
-        
-        # Validate commands
-        if not self.commands:
-            self.logger.info(
-                "No Nagios commands configured. Add 'nagios_runner.commands' to config."
-            )
     
     async def initialize(self) -> bool:
         """Initialize the Nagios runner plugin.
@@ -95,7 +89,6 @@ class NagiosRunnerPlugin(MonitorPlugin):
 
         if not self.commands:
             self.skip_reason = "no commands configured (add nagios_runner.commands to config)"
-            self.logger.info("No Nagios commands configured")
             return False
         
         self.logger.info(f"Configured to run {len(self.commands)} Nagios plugin(s)")