Retrieve aggregated rewards summary for the stake.fish zkVerify validator.

Summary Includes:

• Annual Percentage Rate (APR) over the specified time window, net of validator commission
• Validator commission rate
• Total stake and nominator count
• Current era

APR Calculation:

• Calculated backwards from historical network rewards over the time window
• Parametrized by time window (7d or 30d)

Caching:

• Results are cached until midnight UTC to optimize performance
• Cache is automatically invalidated and refreshed daily at 00:00 UTC