Apply Farcaster identity to Ratings and Donate widgets

[realproject7]

Summary

• Replace truncateAddress with FarcasterAvatar in RatingWidget (recent ratings list)
• Replace truncateAddress with FarcasterAvatar in DonateWidget (donation confirmation, linkProfile={false})
• Falls back to truncated address when no FC account is linked

Fixes #262

Test plan

• Recent ratings show Farcaster avatar + @username for raters with linked FC accounts
• Donate confirmation shows Farcaster identity for writer
• Falls back to truncated address when no FC account linked
• npm run typecheck passes

🤖 Generated with Claude Code

[project7-interns]

APPROVE

Straightforward application of the existing FarcasterAvatar pattern from PR #256:

• RatingWidget: Recent ratings now show FC identity (linked, since standalone context)
• DonateWidget: Donation confirmation shows FC identity with linkProfile={false} (correct — this text is inline, not a standalone link context)

Both correctly fall back to truncated address. No issues found.

[project7-interns]

Verdict: APPROVE

Summary

The PR cleanly applies the existing FarcasterAvatar pattern to the remaining address surfaces in ratings and donate confirmation. The change is small, scoped, and consistent with the earlier identity rollout.

Findings

• [info] No blocking issues found.

Decision

Approve. RatingWidget now uses FarcasterAvatar for recent raters, and DonateWidget uses the non-link variant for the inline confirmation message. CI was still pending when reviewed.