v0.1.38
Fix crypto sync to merge existing CSV with new data before enhancement
- Rewrite enhance_and_save_crypto_data() to mirror stock sync flow
- Read existing CSV, merge with new data, slice 200 records for MA context
- Both CryptoCompare and ApiProxy now share same merge+enhance pipeline
- Add fetch_single_crypto() for ApiProxy to fetch one ticker at a time
- Remove batch fetching methods that caused data corruption