test: Add E2E tests for complete position lifecycle

[YaronZaki]

Problem Statement

No Playwright, Cypress, or any E2E testing framework exists in the repository. The complete position lifecycle (create → deposit → monitor → close) is never verified end-to-end. Integration bugs between frontend, API, and blockchain go undetected until production.

Evidence

No E2E test files exist anywhere in the repository. No Playwright or Cypress configuration. No E2E step in CI workflows.

Impact

High — untested user flows. Position creation, deposit, monitoring, and closure are individual features that only work when all layers (Freighter → Frontend → API → Database → Soroban → Horizon) integrate correctly. Integration bugs between these layers are caught only in manual testing or production.

Proposed Solution

Add Playwright E2E tests covering: (1) connect Freighter wallet, (2) create a position, (3) monitor position on dashboard, (4) add extra deposit, (5) close position. Run against a Stellar testnet deployment.

Acceptance Criteria

• Playwright configured and integrated into the project
• E2E test for complete position lifecycle: create → monitor → close
• E2E test for extra deposit flow
• E2E test for error states (insufficient balance, failed transaction)
• E2E step added to CI workflow (frontend_tests.yml)
• Tests run against Stellar testnet

File Map

• quantara/frontend/test/e2e/ — New: E2E test suite
• quantara/frontend/playwright.config.js — New: Playwright configuration
• .github/workflows/frontend_tests.yml — add E2E step

Testing Strategy

Tests themselves are the deliverable. Use Playwright for modern web app testing. Start with smoke tests, then add detailed scenarios.

Security Considerations

E2E tests against testnet only — never use real funds. Use dedicated test accounts.

Definition of Done

• Code implemented and peer-reviewed
• Tests written and passing (E2E suite)
• Documentation updated
• PR linked and merged

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Labels: testing, high-impact
Priority: High
Difficulty: Advanced
Estimated Effort: 1w

[shadrach68]

I would like to work on this issue because I am a full-stack developer with 5+ years experience. I focus on identifying root causes and delivering clean, efficient, and maintainable solutions, with thorough testing to ensure reliable results.

[martinshub-tech]

I'd like to take this issue. I've analyzed the root cause and am confident I can deliver a reliable fix with proper testing

[grantfox-oss]

🦊 GrantFox — @martinshub-tech has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #61)
2. Your PR will be reviewed by the Quantarq maintainers

Good luck! Track your progress on GrantFox.