Implement comprehensive test coverage for NIP-29 features #nip29

[rabble]

Problem

While excellent test plans exist in docs/REAL_TEST_PLAN.md and docs/COMPLETE_TEST_SUMMARY.md, the actual implementation status of these tests is unclear. No test files were found during analysis.

Test Plans Documented

• ✅ Infrastructure testing strategy
• ✅ Real Nostr integration using test accounts
• ✅ E2E UI testing with Playwright
• ✅ Critical NIP-29 functionality coverage

Missing Implementation

• Unit tests for NIP-29 hooks and components
• Integration tests for group operations
• E2E tests for group workflows
• Real relay testing setup
• CI/CD integration

Critical Paths to Test

• Group creation and joining
• Message posting and retrieval
• Admin operations (add/remove users, etc.)
• NIP-42 authentication flows
• Relay routing and failover
• eCash integration

Acceptance Criteria

• Test files created matching documented plans
• CI pipeline integration
• Real relay testing environment
• Playwright E2E tests working
• Coverage reports available
• Tests pass consistently

Test Types Needed

• Unit: Individual hooks and utilities
• Integration: Provider and relay interactions
• E2E: Complete user workflows
• Real Network: Actual Nostr relay testing

Tags: #nip29