Add E2E tests for WalletConnect using Playwright

[rnbrady]

Adds:

• a minimal Vue-based test dApp with WalletConnect
• Playwright as dev dependency
• E2E tests for walletconnect using Playwright

If the environment or .env contains E2E_SEED_PHRASE this will be used to test transaction signing. Otherwise that test will be skipped.

Correction: Turns out you can send an arbitrary tx to cashonize for signing with broadcast: false and it will sign it. So we don't need a funded chipnet seed phrase for the tests. However, such the seed phrase will be useful for future e2e tests so I have left support for it in an simply removed the condition so that signTransaction is tested either way.

[Copilot]

Pull request overview

Adds a Playwright-based E2E test setup for WalletConnect by introducing a minimal Vue test dApp, Playwright configuration, and CI wiring to run the E2E suite alongside existing lint/type/unit tests.

Changes:

• Add Playwright E2E tests covering WalletConnect connect/sign/cancel/disconnect flows.
• Add a standalone Vue/Vite “test dApp” used by the E2E tests.
• Wire E2E execution into package.json scripts and GitHub Actions CI.

Reviewed changes

Copilot reviewed 14 out of 20 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
yarn.lock	Adds Playwright packages to the root Yarn v1 lockfile.
package.json	Adds test:e2e and test:e2e:ui scripts and @playwright/test dev dependency.
vitest.config.ts	Excludes test/e2e/** from Vitest runs.
tsconfig.json	Formatting-only change.
quasar.config.ts	Excludes test/e2e/test-dapp from Quasar-generated TS config checking.
test/e2e/playwright.config.ts	New Playwright config that starts the wallet dev server and the test dApp server.
test/e2e/walletconnect.test.ts	New Playwright E2E test suite for WalletConnect flows.
test/e2e/test-dapp/package.json	New minimal Vue/Vite test dApp package definition.
test/e2e/test-dapp/vite.config.ts	Vite config for the test dApp (fixed port).
test/e2e/test-dapp/tsconfig.json	TypeScript config for the test dApp.
test/e2e/test-dapp/index.html	Test dApp HTML entrypoint.
test/e2e/test-dapp/src/main.ts	Vue bootstrap for the test dApp.
test/e2e/test-dapp/src/App.vue	Test dApp UI + WalletConnect request logic and TX fixture.
test/e2e/test-dapp/README.md	Usage notes for running the test dApp standalone.
test/e2e/test-dapp/.gitignore	Ignores test dApp build artifacts and deps.
test/e2e/test-dapp/yarn.lock	Adds a separate lockfile for the test dApp (currently Yarn Berry format).
.gitignore	Ignores .env* and Playwright test-results/.
.github/workflows/ci.yml	Adds yarn test:e2e to CI.

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[rnbrady]

Closes #127