Pair visualization polish

[javaisbetterthanpython]

Summary

Visual polish: show linked-pair indicators on badges throughout the app.

Acceptance criteria

• PlayerBadge shows link icon when player is in a fixed pair
• TeamBadges on rounds page visually groups fixed pair teammates
• Consistent styling with NextUI theme
• Accessible aria-label for pair relationship

Files likely touched

• src/PlayerBadge.tsx
• src/TeamBadges.tsx
• src/BadgeGroup.tsx

Test plan

• yarn build
• Manual visual check on /new and /rounds

Dependencies

#4, #5

[javaisbetterthanpython]

🤖 Coder report

Status: done
Branch: issue-11-pair-visualization
PR: #17
Tests: build PASS

Changes

• useFixedPairs() in src/fixedPairs.ts — graceful no-op when fixedPairs absent
• PlayerBadge — chain-link + aria-label for fixed partners
• TeamBadges — dashed border group + connector for fixed-pair teammates
• PairLinkIcon.tsx — shared SVG (replaces invalid react-iconly Link)
• pages/rounds.tsx — playerId on sit-out badges

Notes

Awaiting reviewer. Depends on #4/#5 for full integration but visualization is self-contained.

[javaisbetterthanpython]

Merged to main; closing stale open issue.