E2E: Soroban simulate + testnet faucet happy path

[Nanle-code]

Labels: testing, e2e

Description

tests/e2e/multisig.spec.js exists; Soroban and connect flows need Playwright coverage against built app.

Tasks

Mock Horizon with route interception OR use testnet with env flag.
Spec: connect → faucet → overview shows balance.
Spec: contract simulate returns result panel.
Acceptance criteria

New tests/e2e/soroban.spec.js and connect.spec.js pass in CI e2e job.

Document env vars in docs/contributing.md.
Files

tests/e2e/ (new specs)
playwright.config.ts
.github/workflows/ci.yml
src/components/dashboard/Faucet.jsx, ContractInteraction.jsx

[HybridDan]

@HybridDan has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hello maintainer, I'd love to work on this issue. Assign me.

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Congratulations, @HybridDan! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

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