[Blocker] Fix GCS initialization: handle empty service account key
Published on November 8, 2025
## GitHub Update
**Repository:** [MKWcorp/CINTAI](https://github.com/MKWcorp/CINTAI)
**Author:** MKWcorp
**Date:** 11/8/2025, 4:37:31 PM
**Commit:** [`bea5ff9`](https://github.com/MKWcorp/CINTAI/commit/bea5ff9f54ddc1fc1738d0f11e218a88c4489778)
### Commit Message
Fix GCS initialization: handle empty service account key
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