Added first working version of the code. Processes

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app/celery_app.py

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+# app/celery_app.py
+
+from celery import Celery
+from app.config import settings
+
+celery = Celery(
+    "document_processor",
+    broker=settings.redis_url,
+    backend=settings.redis_url,
+)
+
+
+# Optionally add this line to retain connection retry behavior at startup:
+celery.conf.broker_connection_retry_on_startup = True
+
+# Set the default queue and routing so that tasks are enqueued on "document_processor"
+celery.conf.task_default_queue = 'document_processor'
+celery.conf.task_routes = {
+    "app.tasks.*": {"queue": "document_processor"},
+}