feat: Multiple UI improvements and new server log functionality

- Add Server Log tab with DataTable display of server activity logs

- Fix keyboard navigation bug in agents tab

- Add execution history viewer for selected agents

- Improve policy tree widget functionality by adding single device operations

- Integrate logging notifications into TUI
  - Add TextualNotificationHandler to setup.py
  - Display ERROR/WARNING/CRITICAL logs as toast notifications
  - Remove terminal output to prevent interference with TUI
  - Logs still written to Loxide.log file

closes #45

utils/setup.py

@@ -29,6 +29,49 @@ from utils.configmanager import (
 )
 
 
+class TextualNotificationHandler(logging.Handler):
+    """
+    Custom logging handler that sends ERROR, WARNING, and CRITICAL logs
+    to Textual toast notifications.
+    """
+
+    def __init__(self, app):
+        super().__init__()
+        self.app = app
+
+    def emit(self, record):
+        try:
+            # Only handle ERROR, WARNING, and CRITICAL
+            if record.levelno >= logging.WARNING:
+                # Format the message
+                msg = self.format(record)
+
+                # Map log levels to Textual severity
+                severity_map = {
+                    logging.WARNING: "warning",
+                    logging.ERROR: "error",
+                    logging.CRITICAL: "error",
+                }
+                severity = severity_map.get(record.levelno, "information")
+
+                # Send to Textual notification
+                # Use call_from_thread if logging from non-main thread
+                try:
+                    self.app.notify(msg, severity=severity, timeout=5)
+                except Exception:
+                    # If we're not on the main thread, schedule it
+                    try:
+                        self.app.call_from_thread(
+                            self.app.notify, msg, severity=severity, timeout=5
+                        )
+                    except Exception:
+                        # Silently fail to avoid breaking the logging system
+                        pass
+        except Exception:
+            # Silently fail to avoid breaking the logging system
+            pass
+
+
 def get_base_directory() -> Path:
     system = platform.system()
     home = Path.home()
@@ -44,38 +87,31 @@ def configure_logging(log_dir: Path, log_level: str = "INFO"):
     log_file = log_dir / "Loxide.log"
 
     config = {
-        "version": 1,  # Required key for dictConfig format version
-        "disable_existing_loggers": False,  # Keeps existing loggers active
+        "version": 1,
+        "disable_existing_loggers": False,
         "formatters": {
             "detailed": {
                 "format": "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
-                # Includes timestamp, logger name, level, and message
-            },
-            "simple": {
-                "format": "%(levelname)s - %(message)s"
-                # Minimal format for console output
             },
+            "simple": {"format": "%(levelname)s - %(message)s"},
+            "toast": {"format": "%(name)s: %(message)s"},  # Simpler format for toasts
         },
         "handlers": {
             "file": {
                 "class": "logging.handlers.TimedRotatingFileHandler",
                 "filename": str(log_file),
-                "when": "midnight",  # Rotate logs at midnight
-                "interval": 1,  # Every 1 day
-                "backupCount": 7,  # Keep 7 days of logs
-                "encoding": "utf-8",  # Ensure UTF-8 encoding
-                "level": "DEBUG",  # Always log DEBUG and above to file
-                "formatter": "detailed",  # Use detailed format
-            },
-            "console": {
-                "class": "logging.StreamHandler",
-                "level": log_level.upper(),  # System-configured level for console
-                "formatter": "simple",  # Use simple format
+                "when": "midnight",
+                "interval": 1,
+                "backupCount": 7,
+                "encoding": "utf-8",
+                "level": "DEBUG",
+                "formatter": "detailed",
             },
+            # REMOVED console handler - it interferes with Textual TUI
         },
         "root": {
-            "level": "DEBUG",  # Root logger level
-            "handlers": ["file", "console"],  # Attach both handlers
+            "level": "DEBUG",
+            "handlers": ["file"],  # Only use file handler, not console
         },
     }
 
@@ -96,6 +132,18 @@ def configure_logging(log_dir: Path, log_level: str = "INFO"):
     logging.config.dictConfig(config)
     logging.getLogger().debug("✅ Logging configured.")
 
+    # Return a function to attach the notification handler once the app is created
+    def attach_notification_handler(app):
+        """Attach the Textual notification handler to the root logger."""
+        handler = TextualNotificationHandler(app)
+        handler.setLevel(logging.WARNING)  # Only WARNING and above
+        formatter = logging.Formatter("%(name)s: %(message)s")
+        handler.setFormatter(formatter)
+        logging.getLogger().addHandler(handler)
+        logging.getLogger().debug("✅ Textual notification handler attached.")
+
+    return attach_notification_handler
+
 
 def setup():
     """
@@ -105,6 +153,9 @@ def setup():
     3. Load user config (mutable, from user_config.json)
     4. Configure logging
     5. Set up .env with WORKING_DIR only
+
+    Returns:
+        attach_notification_handler: Function to attach notification handler to TUI app
     """
     base_dir = get_base_directory()
     dirs = {
@@ -122,7 +173,7 @@ def setup():
 
     # Configure logging with system-defined log level
     log_level = get_system_value("LOG_LEVEL", str, "INFO")
-    configure_logging(dirs["logs"], log_level)
+    attach_handler = configure_logging(dirs["logs"], log_level)
 
     # Load user config (mutable)
     load_user_config(dirs["config"])
@@ -145,7 +196,6 @@ def setup():
         "Approved": [],
         "Needs_Review": ["Review_First", "Review_Second", "HTML"],
         "Preflight": ["HTML"],
-        "Archived": [],
     }
 
     for folder_name, subfolders in folders_structure.items():
@@ -158,3 +208,6 @@ def setup():
             logging.debug(f"'{subfolder}' subfolder created at: {subfolder_path}")
 
     logging.info("✅ Setup complete")
+
+    # Return the attach handler function
+    return attach_handler