feat(explorer): add staking history charts to validator detail page

[Juligs]

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
iota-multisig-toolkit	Skipped		Jul 15, 2026 3:23pm

[evavirseda]

it doesn't match the current epoch value, so there might be an issue 🙈 we show two different APYs on this page: the one at the top (from ValidatorStats, coming from the node) and the last point in the chart 💹 and the values won't match 🙏

Screencast.from.2026-07-16.09-42-10.webm

[Juligs]

it doesn't match the current epoch value, so there might be an issue 🙈 we show two different APYs on this page: the one at the top (from ValidatorStats, coming from the node) and the last point in the chart 💹 and the values won't match 🙏

Screencast.from.2026-07-16.09-42-10.webm

The APY stat at the top is calculated using an average across multiple epochs, while the chart shows the APY for each individual epoch based on the corresponding epoch event, so the values won’t match exactly. Maybe we could rename the chart label to Epoch APY to make the distinction clearer

[evavirseda]

nice job ⭐