Subscription dashboard improvements, AI text generation limit, and other fixes.

backend/services/scheduler/__init__.py

@@ -0,0 +1,59 @@
+"""
+Task Scheduler Package
+Modular, pluggable scheduler for ALwrity tasks.
+"""
+
+from .core.scheduler import TaskScheduler
+from .core.executor_interface import TaskExecutor, TaskExecutionResult
+from .core.exception_handler import (
+    SchedulerExceptionHandler, SchedulerException, SchedulerErrorType, SchedulerErrorSeverity,
+    TaskExecutionError, DatabaseError, TaskLoaderError, SchedulerConfigError
+)
+from .executors.monitoring_task_executor import MonitoringTaskExecutor
+from .utils.task_loader import load_due_monitoring_tasks
+
+# Global scheduler instance (initialized on first access)
+_scheduler_instance: TaskScheduler = None
+
+
+def get_scheduler() -> TaskScheduler:
+    """
+    Get global scheduler instance (singleton pattern).
+    
+    Returns:
+        TaskScheduler instance
+    """
+    global _scheduler_instance
+    if _scheduler_instance is None:
+        _scheduler_instance = TaskScheduler(
+            check_interval_minutes=15,
+            max_concurrent_executions=10
+        )
+        
+        # Register monitoring task executor
+        monitoring_executor = MonitoringTaskExecutor()
+        _scheduler_instance.register_executor(
+            'monitoring_task',
+            monitoring_executor,
+            load_due_monitoring_tasks
+        )
+    
+    return _scheduler_instance
+
+
+__all__ = [
+    'TaskScheduler',
+    'TaskExecutor',
+    'TaskExecutionResult',
+    'MonitoringTaskExecutor',
+    'get_scheduler',
+    # Exception handling
+    'SchedulerExceptionHandler',
+    'SchedulerException',
+    'SchedulerErrorType',
+    'SchedulerErrorSeverity',
+    'TaskExecutionError',
+    'DatabaseError',
+    'TaskLoaderError',
+    'SchedulerConfigError'
+]