Add comprehensive debug logging to track FRED API key loading and propagation

frontend/app.py

@@ -89,10 +89,13 @@ def load_config():
     
     # Try multiple sources for FRED API key
     fred_key = os.getenv('FRED_API_KEY')
+    print(f"DEBUG: load_config() - FRED_API_KEY from os.getenv = {fred_key}")
     if not fred_key:
         try:
             fred_key = st.secrets.get("FRED_API_KEY")
-        except:
+            print(f"DEBUG: load_config() - FRED_API_KEY from st.secrets = {fred_key}")
+        except Exception as e:
+            print(f"DEBUG: load_config() - Error getting from st.secrets: {e}")
             pass
     
     print("DEBUG: Final FRED_API_KEY =", fred_key)
@@ -100,6 +103,8 @@ def load_config():
     # Update global variables
     FRED_API_KEY = fred_key or ''
     REAL_DATA_MODE = FRED_API_KEY and FRED_API_KEY != 'your-fred-api-key-here'
+    print(f"DEBUG: load_config() - Updated FRED_API_KEY = {FRED_API_KEY}")
+    print(f"DEBUG: load_config() - Updated REAL_DATA_MODE = {REAL_DATA_MODE}")
     
     try:
         from config import Config

streamlit_app.py

@@ -9,8 +9,13 @@ load_dotenv()
 
 # 2. Grab the key from env OR Cloud secrets
 fred_key = os.getenv("FRED_API_KEY") or st.secrets.get("FRED_API_KEY")
+print(f"DEBUG: FRED_API_KEY from os.getenv = {os.getenv('FRED_API_KEY')}")
+print(f"DEBUG: FRED_API_KEY from st.secrets = {st.secrets.get('FRED_API_KEY')}")
+print(f"DEBUG: Final fred_key = {fred_key}")
 if not fred_key:
     st.error("❌ FRED API not available. Please configure your FRED_API_KEY.")
+    st.info("Available environment variables: " + str(list(os.environ.keys())))
+    st.info("Available secrets keys: " + str(list(st.secrets.keys())))
     st.stop()
 
 # 3. Propagate it into the actual env namespace only