### What happened?

We've identified two separate bugs in the LiteLLM usage dashboard that cause incorrect data display:

1. **Frontend Pagination Bug**: Total spend significantly underreported when data spans multiple pages 2. **Backend Provider Attribution Bug**: Failed requests show as 0 for all providers despite actual failures occurring

🔍 Bug Details

### Bug 1: Frontend Pagination Aggregation Issue

**Problem**: The usage dashboard only displays totals from the first page of API results instead of aggregating across all pages.

**API Calls Made**: ``` /user/daily/activity?page=1 → Returns metadata with totals /user/daily/activity?page=2 → Returns metadata with totals /user/daily/activity?page=3 → Returns metadata with totals /user/daily/activity?page=4 → Returns metadata with totals ```

**Expected**: Dashboard should sum all metadata totals across pages **Actual**: Dashboard only shows totals from page 1

**Affected Metrics**: - Total spend - Total API requests - Successful/failed requests - Token usage - Cache statistics

### Bug 2: Backend Provider Attribution Issue

**Problem**: "Spend by Provider" section shows `failed_requests: 0` for all providers despite fail…