### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### What happened?

When general_settings.store_prompts_in_spend_logs: true is enabled in LiteLLM v1.93.0, the config is successfully loaded from the mounted config.yaml, but prompt content is still not persisted into LiteLLM_SpendLogs.messages. I verified this with fresh requests after restart. Observed behavior: acompletion rows have messages = {} aresponses rows also have messages = {} response is populated, but messages remains empty this happens even after confirming the config is present both on the host and inside the container Expected behavior: when store_prompts_in_spend_logs: true is enabled, prompt/input content should be stored in spend logs at minimum, LiteLLM_SpendLogs.messages should contain the request messages for /chat/completions if prompt data is intentionally stored in another field, that should be documented clearly This does not appear to be a UI-only issue. Direct SQL inspection of LiteLLM_SpendLogs shows messages is actually persisted as {}.

### Steps to Reproduce

1.Run LiteLLM v1.93.0 via Docker with this config: general_settings: st…