CSV/JSON export of the current swap interface view with safe escaping

[mikewheeleer]

Summary

Users can't get swap interface data out of the app. Add a client-side export of the currently-filtered view as CSV and JSON with correct escaping (including formula-injection safety).

Why this matters

Export is table stakes for a data tool, and naive CSV is a formula-injection risk. Correct escaping makes it safe and useful.

Requirements

• Export the currently-filtered swap interface as CSV and JSON.
• Escape correctly: quotes, commas, newlines, and leading = + - @ (CSV formula-injection).
• Respect the active filters/sort; export what the user sees.
• Trigger a client download; accessible control.

Technical guidance

• Neutralize formula-triggering leading characters in CSV cells.
• Stream/generate without blocking the UI for large views.

Edge cases — each must have a test

• export respects the active filter
• cells with commas/quotes/newlines -> valid CSV
• cell starting with = -> neutralized
• empty view -> valid empty export
• JSON export round-trips

Acceptance criteria

• All requirements and every edge case above implemented and covered by tests
• New unit and integration tests; existing tests still pass and no regressions
• Structured, typed errors (no leaked internals; stable codes)
• npm run lint, npm test, and npm run build all pass locally
• Code follows the repo's existing conventions; no duplication or dead code
• Short docs/comments explaining the design and any non-obvious decisions
• PR description explains the approach and includes Closes #<issue>

Out of scope

• Server-side/large-dataset export
• XLSX format

Rewards

Part of the GrantFox OSS / Official Campaign (FWC26) — this task may be rewarded. PR quality is assessed by AI: depth, correctness under edge cases, meaningful tests, and clean design are what earn the reward. Shallow changes (typos, formatting, trivial docs) do not qualify.

[guptakumarranjeet150]

Hello @maintainers,

I would like to resolve this issue. Here is my proposed execution plan:

• Implementation: Build CSV/JSON export of the current swap interface view with safe escaping with clean React/Next.js components, responsive styling, and proper loading/error boundaries.
• Testing & Verification: Add component unit tests and ensure zero TypeScript/ESLint warnings.
• Delivery: Ready to ship a thoroughly tested PR within 12–24 hours with passing CI.

Happy to pick this up today—please assign to me!