Big refactoring

.env.example

@@ -13,14 +13,27 @@ ALPACA_API_SECRET=
 GEMINI_API_KEY=
 GEMINI_MODEL=gemini-2.0-flash
 
+# Sentiment Provider — OpenAI
+OPENAI_API_KEY=
+OPENAI_MODEL=gpt-4o-mini
+OPENAI_SENTIMENT_BATCH_SIZE=5
+
 # Fundamentals Provider — Financial Modeling Prep
 FMP_API_KEY=
 
+# Fundamentals Provider — Finnhub (optional fallback)
+FINNHUB_API_KEY=
+
+# Fundamentals Provider — Alpha Vantage (optional fallback)
+ALPHA_VANTAGE_API_KEY=
+
 # Scheduled Jobs
 DATA_COLLECTOR_FREQUENCY=daily
 SENTIMENT_POLL_INTERVAL_MINUTES=30
 FUNDAMENTAL_FETCH_FREQUENCY=daily
 RR_SCAN_FREQUENCY=daily
+FUNDAMENTAL_RATE_LIMIT_RETRIES=3
+FUNDAMENTAL_RATE_LIMIT_BACKOFF_SECONDS=15
 
 # Scoring Defaults
 DEFAULT_WATCHLIST_AUTO_SIZE=10