add last sync time in index, fix csv file caching time in fetching new data

engine.py

@@ -16,6 +16,9 @@ class DataEngine:
         self.symbol = symbol.strip().upper() if symbol else None
         self.name = name
         
+        # --- Fetch frequently ---
+        self.cache_expiry = 1 * 3600  # Set to 0 for forced refresh, 24 for normal
+
         # 2. Setup the directory variable FIRST 
         # (This was likely below the file_path line, causing the crash)
         base_path = os.path.dirname(os.path.abspath(__file__))
@@ -50,21 +53,17 @@ class DataEngine:
         
     def ensure_data(self):
         """Checks if file exists and is fresh (less than 24h old)."""
-        CACHE_EXPIRY = 24 * 3600  # 24 hours
+        # Force expiry to 0
+        CACHE_EXPIRY = 0 
         
         if os.path.exists(self.file_path):
-            # NEW: Check how old the file is
-            file_age = time.time() - os.path.getmtime(self.file_path)
-            if file_age < CACHE_EXPIRY:
-                return True  # Data is actually fresh
+            # By changing this to 'if False', we force it to ignore the cache every time
+            if False: # file_age < CACHE_EXPIRY:
+                return True 
             else:
-                print(f"DEBUG: {self.symbol} cache is stale ({round(file_age/3600)}h old). Refreshing...")
-        else:
-            print(f"DEBUG: {self.symbol} not found in cache. Attempting download...")
-
-        # If we reached here, it means we either have NO file or a STALE file
-        # Instead of just yfinance, call your specialized fetch_data() 
-        # which uses the URLs from your TEMPLATES
+                print(f"DEBUG: {self.symbol} refreshing now...")
+        
+        # This calls your actual downloader
         return self.fetch_data()
 
     def load_instruments_from_csv(self, file_path='instruments.csv'):
@@ -276,7 +275,7 @@ class DataEngine:
     
     def fetch_data(self):
         local_df = pd.DataFrame()
-        CACHE_EXPIRY = 24 * 3600  
+        CACHE_EXPIRY = 0 
         file_exists = os.path.exists(self.file_path)
         
         # 1. Load Local Cache & Check Age