Wire ReputationDisplay into MarketplaceCard listings using seller analytics

[1nonlypiece]

📌 Description

src/components/ReputationDisplay.tsx renders a seller's score, track record,
and success rate, but it is not surfaced on src/components/MarketplaceCard.tsx
where a buyer actually evaluates a listing. Buyers currently see protocol, APY,
and risk badges with no seller-trust context.

This issue integrates ReputationDisplay into each marketplace listing card so
buyers can judge counterparty reliability before opening preflight.

Goal: make seller reputation a first-class, glanceable signal at the point
of purchase.

🎯 Requirements and Context

• Pull reputation values from the listing payload returned by
  /api/marketplace/listings (extend the DTO mapping in
  src/lib/backend/services/marketplace.ts read path only as needed for shape,
  no contract changes).
• Render a compact reputation summary on the card; expand to the full
  ReputationDisplay inside CommitmentDetailsModal.tsx quick-view.
• Gracefully handle listings with no reputation data (new sellers): show a
  neutral "New seller" state, not a zero score.
• Keep card layout responsive and avoid layout shift on slow data.

🛠️ Suggested Execution

1. Fork the repo and create a branch

git checkout -b feature/marketplace-card-reputation

2. Implement changes

• Edit src/components/MarketplaceCard.tsx to render a compact reputation chip.
• Edit src/components/modals/CommitmentDetailsModal.tsx to embed the full
  ReputationDisplay.
• Add src/components/__tests__/MarketplaceCardReputation.test.tsx (RTL).
• Add docs/MARKETPLACE_REPUTATION.md describing the data contract and the
  "new seller" fallback.

3. Test and commit

• Run the repo test suite: pnpm test
• Cover edge cases: missing reputation, score boundaries (74/75/89/90), and the
  new-seller neutral state.

Example commit message

feat: surface seller reputation on marketplace cards and quick-view

✅ Guidelines

• Minimum 95% test coverage on new/changed lines.
• Clear, reviewer-friendly documentation.
• Timeframe: 96 hours.

🏷️ Labels

type-feature · area-frontend · MAYBE REWARDED · GRANTFOX OSS ·
OFFICIAL CAMPAIGN

💬 Community & Support

• Join the CommitLabs contributor Discord to coordinate and get unblocked fast:
  https://discord.gg/WV7tdYkJk
• Please introduce yourself before you start so we can avoid duplicate work.

[Opulencechuks]

@Opulencechuks has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I am confident that i can implement this having worked on something similar in the past

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Opulencechuks to this issue.

[drips-wave]

Congratulations, @Opulencechuks! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @Opulencechuks: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@Opulencechuks's PR #883 was approved and merged by @1nonlypiece.

🏆 @Opulencechuks: You earned 40 FoxPoints for this contribution! Your current tier: Builder (1,671 total points). Track your full progress on GrantFox.

👏 Great work, @Opulencechuks! Keep contributing to Commitlabs-Org.

[drips-wave]

This issue has been completed by @Opulencechuks as part of the Stellar Wave Program's 6th Wave 🥳

😎 @Opulencechuks: You earned 100 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.