Add revenue claiming UI for EducationalStartup contributors

[Frontman-Code]

Summary

Closes #597
Closes #596
Closes #600
Closes #570

Type of Change

• Bug fix
• Feature
• Chore / maintenance
• Documentation
• Test coverage

Contributor Checklist

• Linked the related issue above.
• Reviewed CONTRIBUTING.md for branch, commit, and PR title conventions.
• Confirmed this follows the current Stellar Wave contribution flow, if applicable.
• Added or updated tests when behavior changed.
• Updated docs, examples, or translations when needed.

Validation

• npm run lint
• npm run format:check
• npm run typecheck
• npm test
• npm run build
• Not run; reason:

Notes for Reviewers

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[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[davidmaronio]

git fetch origin && git rebase origin/main && git push --force-with-lease. once it's green i'll review and merge.

[davidmaronio]

the revenue-claiming idea is welcome but this can't go in as-is, the file doesn't compile:

1. src/app/[locale]/dashboard/DashboardClient.tsx has an unterminated string literal at line 173 plus unclosed jsx tags (div at 92, section at 164, ul at 169), so both tsc and the next build fail on it.
2. lint has a real error too, the diff reverts You haven't back to You haven't which trips react/no-unescaped-entities, put the ' back.
   also the diff mostly deletes existing sections (MyContributionsSection, voting history) rather than adding revenue-claiming ui, so it doesn't match the title, can you reconcile that? fix the syntax so it builds and i'll re-review. the failing Playwright check is a known-broken e2e suite on our side, ignore that one.

[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[sshdopey]

Auto-review failed (API error). Leaving PR for human review.

[sshdopey]

This PR has an empty or whitespace-only diff — no real code changes detected.

If you intended to push code, please commit it. Closing automatically; reopen once you have actual changes.

[sshdopey]

Closed: empty diff.