[Testing] Expand Playwright e2e coverage for the core money flows

[grantfox-oss]

Telegram (ask questions / claim the issue here first): https://t.me/+DOylgFv1jyJlNzM0

Why this matters

There are only three e2e specs. The flows that move money (lend deposit and withdraw, repay, send remittance, wallet) have no end to end coverage, so regressions in the most important paths ship unnoticed.

Acceptance criteria

• Add specs for lend deposit and withdraw, repay, send remittance, and the wallet view
• Mock the wallet and backend so specs are deterministic and run in CI without a live network
• Capture traces and screenshots on failure and upload them as CI artifacts
• Wire the e2e job into CI

Files to touch

• e2e/
• playwright.config.ts
• .github/workflows/ci.yml

Out of scope

• Real testnet end to end runs
• Load testing

[binayyub4211]

Hey maintainer, kindly assign me to work on this issue, thank you

[grantfox-oss]

🦊 GrantFox — @binayyub4211 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 #18)
2. Your PR will be reviewed by the LabsCrypt maintainers

Good luck! Track your progress on GrantFox.