Add email templates for user notifications and account management

- Created a base email template (base.html) for consistent styling across all emails.
- Added moderation approval email template (moderation_approved.html) to notify users of approved submissions.
- Added moderation rejection email template (moderation_rejected.html) to inform users of required changes for their submissions.
- Created password reset email template (password_reset.html) for users requesting to reset their passwords.
- Developed a welcome email template (welcome.html) to greet new users and provide account details and tips for using ThrillWiki.

django/config/celery.py

@@ -0,0 +1,54 @@
+"""
+Celery configuration for ThrillWiki.
+
+This module initializes the Celery application and configures
+task discovery, error handling, and monitoring.
+"""
+
+import os
+from celery import Celery
+from celery.signals import task_failure, task_success
+from django.conf import settings
+
+# Set default Django settings module
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings.local')
+
+# Create Celery app
+app = Celery('thrillwiki')
+
+# Load configuration from Django settings
+app.config_from_object('django.conf:settings', namespace='CELERY')
+
+# Auto-discover tasks from all installed apps
+app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
+
+
+@app.task(bind=True, ignore_result=True)
+def debug_task(self):
+    """Debug task to test Celery configuration."""
+    print(f'Request: {self.request!r}')
+
+
+# Task failure signal handler
+@task_failure.connect
+def task_failure_handler(sender=None, task_id=None, exception=None, **kwargs):
+    """Log task failures for monitoring."""
+    import logging
+    logger = logging.getLogger('celery.task')
+    logger.error(
+        f'Task {sender.name} ({task_id}) failed: {exception}',
+        exc_info=True,
+        extra={'task_id': task_id, 'task_name': sender.name}
+    )
+
+
+# Task success signal handler
+@task_success.connect
+def task_success_handler(sender=None, result=None, **kwargs):
+    """Log task successes for monitoring."""
+    import logging
+    logger = logging.getLogger('celery.task')
+    logger.info(
+        f'Task {sender.name} completed successfully',
+        extra={'task_name': sender.name, 'result': str(result)[:200]}
+    )