feat: improve LP funding confirmation flow

[newmattock]

Fixes #29

Summary

• expand the LP funding confirmation modal with amount to send, expected repayment, gross yield in bps and percent, days to due date, and payer reputation score
• keep approval-required and pre-approved funding paths in the two-step confirmation flow
• pass fetched payer reputation into the modal and rename the final funding CTA to Fund Now
• add regression coverage for approval-needed, pre-approved, and funding-detail display paths
• fix the Vitest @ alias for focused component tests and the current governance Vetoed status build break

Validation

• npm test -- src/components/tests/FundConfirmModal.test.tsx --reporter verbose
• npx eslint src/components/FundConfirmModal.tsx src/components/tests/FundConfirmModal.test.tsx vitest.config.ts app/governance/page.tsx
• npm run build
• git diff --check
• local smoke: HEAD /lp returned HTTP 200 on port 3018
• in-app browser smoke: /lp loaded with LP Dashboard and Fund action present