Refactor fleet module and add cleanup script

- Update Celery configuration in celery.py
- Modify base settings for improved performance
- Enhance task management in fleet tasks.py
- Revise fleet views.py for better data handling
- Add cleanup_tmp_archives.sh script for temporary file management
- Adjust docker-compose.prod.yml for consistency
- Optimize fleetDashboardStore.js with reduced code complexity

backend/core/celery.py

@@ -2,11 +2,33 @@
 
 import os
 from celery import Celery
+from celery import Task
+import gc
+import logging
 
 # Postavi Django settings modul
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'core.settings')
 
 app = Celery('core')
+logger = logging.getLogger(__name__)
+
+
+class ResourceAwareTask(Task):
+    """Celery base task s hookovima za memory-heavy async operacije."""
+
+    abstract = True
+
+    def on_success(self, retval, task_id, args, kwargs):
+        logger.info("Celery task uspješan: %s (%s)", self.name, task_id)
+        super().on_success(retval, task_id, args, kwargs)
+
+    def on_failure(self, exc, task_id, args, kwargs, einfo):
+        logger.exception("Celery task neuspješan: %s (%s): %s", self.name, task_id, exc)
+        super().on_failure(exc, task_id, args, kwargs, einfo)
+
+    def after_return(self, status, retval, task_id, args, kwargs, einfo):
+        gc.collect()
+        super().after_return(status, retval, task_id, args, kwargs, einfo)
 
 # Koristi konfiguraciju iz settings.py s prefiksom 'CELERY_'
 app.config_from_object('django.conf:settings', namespace='CELERY')