Add ban management features and update documentation

- Implement ban model, service, and router endpoints in backend
- Add ban table component and dashboard integration in frontend
- Update ban-related types and API endpoints
- Add comprehensive tests for ban service and dashboard router
- Update documentation (Features, Tasks, Architecture, Web-Design)
- Clean up old fail2ban configuration files
- Update Makefile with new commands

Docs/Web-Design.md

@@ -204,7 +204,7 @@ Use Fluent UI React components as the building blocks. The following mapping sho
 |---|---|---|
 | Side navigation | `Nav` | Persistent on large screens, collapsible on small. Groups: Dashboard, Map, Jails, Config, History, Blocklists. |
 | Breadcrumbs | `Breadcrumb` | Show on detail pages (Jail > sshd, History > IP detail). |
-| Page tabs | `Pivot` | Dashboard (Ban List / Access List), Map (Map / Access List). |
+| Page tabs | `Pivot` | None currently (previous tabs removed). |
 
 ### Data Display