fix: Improve version retrieval logic with fallback mechanism and enhanced error handling

backend/app/main.py

@@ -134,15 +134,25 @@ async def health_check():
 async def get_version():
     """Get backend version"""
     try:
+        # Try multiple possible locations
         version_file = Path(__file__).parent.parent / "VERSION"
+        
         if version_file.exists():
             version = version_file.read_text().strip()
-        else:
-            version = "unknown"
             return {"version": version}
+        
+        # Fallback: try root directory
+        root_version = Path(__file__).parent.parent.parent / "VERSION"
+        if root_version.exists():
+            version = root_version.read_text().strip()
+            return {"version": version}
+        
+        return {"version": "0.1.0"}
     except Exception as e:
         print(f"Error reading version: {e}")
-        return {"version": "unknown"}
+        import traceback
+        traceback.print_exc()
+        return {"version": "0.1.0"}
 
 
 @app.websocket("/ws/reviews")