- Create platform_flow.rs with complete user journey test (load → botserver → login → chat → logout)
- Add TEMP_STACK_SETUP.md guide for using temporary isolated stacks
- Add E2E_TESTING_PLAN.md with architecture and implementation strategy
- Update e2e mod.rs to include new platform_flow module
- Include helpers for: platform loading, botserver verification, login, chat, logout
- Support for headless and headed browser testing
- Environment variable configuration for WebDriver, timeouts, logging
