panel: align page URLs, titles, and headings

Settings moves to /settings with a 308 redirect from /account; domains, Status, Users, and user forms get matching browser titles and h1 text; backup page title reflects domain import.

Co-Authored-By: Composer <noreply@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

internal/web/view/view.go

@@ -34,7 +34,7 @@ var pageFiles = map[string][]string{
 	"setup":         {"templates/setup.html"},
 	"login":         {"templates/login.html"},
 	"dashboard":     {"templates/dashboard.html"},
-	"account":       {"templates/account.html"},
+	"settings":      {"templates/settings.html"},
 	"users":         {"templates/users.html"},
 	"user_form":     {"templates/user_form.html"},
 	"backup":        {"templates/backup.html", "templates/encrypt_fields.html"},