docs: full rewrite of configuration and testing guides
Configuration guide:
- Added sections 5-9: WaaS Access (IP display, action logs, email
notification), Maintenance, Visual Branding (Atum params, shipped
media), Tenant Restrictions, Security Hardening
- Updated troubleshooting and validation checklist
Testing guide:
- Updated suite 2.12: action log entries for all attempt types, email
notification, IP whitelist display, empty=blocked behavior
- Updated suite 2.15: Atum param enforcement, shipped assets, favicon
SVG/ICO/PNG, asset replacement test
- Removed suite 2.18 (operations — deferred)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
jmiller
36e884f2a6