[Feature]: E2E package

[GuiBibeau]

Summary

We need a playwright test suite for hardening purposes.

Problem to solve

• No easy way to test end to end
• the real integration happens at the wallet level

Proposed solution

• create a happy path wallet connection
• playwright with phantom/solflare/backpack installed
• helpers to manipulate the extensions
• plan for flexible updates to the wallet harness as they could change often or introduce new promotional banners that break often the test.

Alternatives considered

No response

Additional context

No response

[N-45div]

Hi @GuiBibeau, I've opened PR #88 to address this issue.

The implementation includes:

• Playwright test infrastructure with wallet harness abstraction
• Support for Phantom, Solflare, and Backpack wallets
• Happy path wallet connection tests
• CI workflow for automated E2E testing

Tests gracefully skip when wallet extensions aren't available (CI/headless mode). Would love your feedback!

[GuiBibeau]

@N-45div reviewing right away!