First-run installer: InstallState, HTTP guard, Filament panel at /installer.
Webkernel\Component\Installer\
InstallState— single source of truth for install statusInstallGuard— redirects HTML traffic to/installerwhen not installedInstallerPanelProvider— Filament wizard panelInstallerPage— setup wizard
webkernel/codebase registers RootController and InstallGuard.
RootRouteResolver in codebase handles / until a GUI-persisted home route exists.