Make earning and ongoing rewards visible from the Home page

Is your feature request related to a problem?

Part of the Delegator UX Analysis RFP.

A user arriving at Explorer should immediately understand that delegation is an earning opportunity. Today, the Home page treats Explorer primarily as a data viewer, with no signal that the user can participate or that participation pays. Returning users with active delegations have no quick read on their position from the Home page either.

For concrete evidence that a lack of delegation signposting causes confusion, see this user interview, which shows how the participant was unable to figure out how to delegate for some time.

Describe the solution you'd like

Surface earning and rewards as first-class concepts on the Home page. For unauthenticated users, show what delegation is and what it offers. For connected users, show ongoing rewards and a clear path back to their active position. The "My Account" link could be renamed or supplemented to make earning explicit.

Describe alternatives you've considered

No response

Additional context

This is closely related to #728 .

New user without wallet connection:

New user with connected wallet and LPT in wallet:

Returning user who has already delegated:

Start at the Explorer Home page entry point and review the three provided user states alongside related issue #728. Define how delegation, earning, ongoing rewards, and the path to an active position should appear for unauthenticated, connected, and returning users. Done means each state clearly communicates the relevant opportunity or position from Home.