Function getDateKey

getDateKey(timestamp: number): string
Standardized date key format for statistics (yyyy-MM-dd). All date keys in statistics use the local date string format to ensure consistency.
Parameters
- timestamp: number
  Unix timestamp in milliseconds.
Returns string
Date key in yyyy-MM-dd format.
Source
```
export function getDateKey(timestamp: number): string {
  // Delegates to getLocalDateString which guarantees yyyy-MM-dd format
  return getLocalDateString(timestamp);
}
```
- Defined in src/utils/statistics-adapter.ts:48