feat: add system config import, refactor install script and nginx auth

- lib/system_import: new module to import system configs into JSON at daemon startup
- daemon/server.py: call import_all() during startup for config reconciliation
- daemon/handlers/nginx.py: simplify add_domain auth handling, remove duplicate code
- scripts/install.sh: replace inline Python setup with curl-based daemon API calls; apply IP forwarding at runtime
- hoover: bump internal asset versions to v=8
- pages: bump asset versions to v=9

webui/static/hoover/components/layout.js

@@ -4,9 +4,9 @@
  * Layout components: PageHeader, Tabs, SectionTitle, DataTableSection, ActionGroup.
  */
 
-import { h } from '../vdom.js?v=7';
-import { Table } from './data.js?v=7';
-import { collectLoadingModels } from '../model.js?v=7';
+import { h } from '../vdom.js?v=8';
+import { Table } from './data.js?v=8';
+import { collectLoadingModels } from '../model.js?v=8';
 
 /**
  * Page header with title, optional subtitle, and action buttons.