Initial project structure: MarketScanner - Fear-to-Fortune Trading Intelligence

Features:
- FastAPI backend with stocks, news, signals, watchlist, analytics endpoints
- React frontend with TailwindCSS dark mode trading dashboard
- Celery workers for news fetching, sentiment analysis, pattern detection
- TimescaleDB schema for time-series stock data
- Docker Compose setup for all services
- OpenAI integration for sentiment analysis

backend/app/workers/celery_app.py

@@ -0,0 +1,69 @@
+"""
+Celery Application Configuration
+"""
+
+from celery import Celery
+from celery.schedules import crontab
+
+from app.core.config import settings
+
+# Create Celery app
+celery_app = Celery(
+    "marketscanner",
+    broker=settings.RABBITMQ_URL,
+    backend=settings.REDIS_URL,
+    include=[
+        "app.workers.tasks.news_tasks",
+        "app.workers.tasks.stock_tasks",
+        "app.workers.tasks.sentiment_tasks",
+        "app.workers.tasks.pattern_tasks",
+        "app.workers.tasks.alert_tasks",
+    ],
+)
+
+# Celery configuration
+celery_app.conf.update(
+    task_serializer="json",
+    accept_content=["json"],
+    result_serializer="json",
+    timezone="UTC",
+    enable_utc=True,
+    task_track_started=True,
+    task_time_limit=300,  # 5 minutes
+    worker_prefetch_multiplier=1,
+    worker_concurrency=4,
+)
+
+# Beat schedule (periodic tasks)
+celery_app.conf.beat_schedule = {
+    # Fetch news every 5 minutes
+    "fetch-news-every-5-minutes": {
+        "task": "app.workers.tasks.news_tasks.fetch_all_news",
+        "schedule": settings.NEWS_SCAN_INTERVAL,
+    },
+    # Update stock prices every minute
+    "update-prices-every-minute": {
+        "task": "app.workers.tasks.stock_tasks.update_stock_prices",
+        "schedule": settings.STOCK_PRICE_INTERVAL,
+    },
+    # Process unanalyzed news every 2 minutes
+    "analyze-sentiment-every-2-minutes": {
+        "task": "app.workers.tasks.sentiment_tasks.process_unanalyzed_news",
+        "schedule": 120,
+    },
+    # Detect panic events every 5 minutes
+    "detect-panic-every-5-minutes": {
+        "task": "app.workers.tasks.pattern_tasks.detect_panic_events",
+        "schedule": 300,
+    },
+    # Generate signals every 10 minutes
+    "generate-signals-every-10-minutes": {
+        "task": "app.workers.tasks.pattern_tasks.generate_buy_signals",
+        "schedule": 600,
+    },
+    # Clean old data daily at midnight
+    "cleanup-daily": {
+        "task": "app.workers.tasks.news_tasks.cleanup_old_news",
+        "schedule": crontab(hour=0, minute=0),
+    },
+}