Add end-to-end tests for mock and live-mode flows

[Lakes41]

Summary

Add browser-level tests that verify the most important user journeys in mock mode and a controlled live-mode API fixture.

Current Behaviour

The repository does not include visible end-to-end tests. Important flows such as wallet connection state, dashboard rendering, access denial, admin navigation, member listing, and policy editing are not tested through a browser.

Expected Behaviour

Contributors should be able to run a deterministic E2E suite that validates critical flows before merging UI or API changes.

Suggested Implementation

Add Playwright and create wallet/API mocks for deterministic browser tests. Cover dashboard loading in mock mode, gated page allow/deny behaviour, admin member role assignment, policy editing, and live-mode error handling with intercepted network responses.

Files or Areas Likely Affected

• package.json
• playwright.config.ts
• e2e/
• lib/api/mock.ts
• app/**/*.tsx
• README.md
• .github/workflows/

Acceptance Criteria

• E2E tests run with npm run test:e2e
• Tests cover mock mode without external services
• Tests cover live-mode API success and failure using network fixtures
• Tests verify gated content allow and deny states
• Tests verify admin member and policy workflows
• E2E setup is documented for contributors

Additional Notes

Avoid relying on a real browser wallet extension in CI. Use controlled mocks for wallet state.

[web3nova]

I've reviewed the issue description, and I'm confident I can implement all the requested details smoothly.​Please assign this issue to me! I can have a PR ready for review in a few hours. Thanks

[jaynomyaro]

Hi! I’m a full-stack developer with a strong blockchain background. I’d love to handle this issue and can deliver a clean, reliable solution. Kindly assign it to me.