feat: add oracle verification badge

[newmattock]

Summary

• Add an env-gated VerificationBadge for oracle-verified and unverified payer addresses.
• Reuse payer identity rendering in LP discovery/watchlist surfaces and add the badge to profile headers.
• Add focused rendering and oracle flag/address parsing tests.
• Keep the branch compatible with current main build/lint constraints encountered while validating.

Fixes #48

Validation

• npm run build
• npm test -- src/components/__tests__/VerificationBadge.test.tsx src/utils/__tests__/oracleVerification.test.ts --pool forks --maxWorkers 1 --reporter verbose
• npm run lint -- src/components/VerificationBadge.tsx src/components/PayerIdentity.tsx src/components/__tests__/VerificationBadge.test.tsx src/utils/oracleVerification.ts src/utils/__tests__/oracleVerification.test.ts 'app/profile/[address]/page.tsx' src/components/LPDashboard.tsx app/governance/page.tsx src/components/TokenSelector.tsx src/utils/federation.ts
• git diff --check
• curl -I http://127.0.0.1:3034/profile/GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF
• curl -I http://127.0.0.1:3034/lp