feat: compare limit 9, format-aware import placeholder, help links

- Raise compare limit from 8 to 9 (server + client, toast on overflow)
- Make import textarea placeholder match selected format (CSV/JSON/YAML/auto)
- Add GuideHelp links to admin create/edit user dialogs and tool import dialog

artifacts/toolrate/src/pages/admin.tsx

@@ -29,6 +29,7 @@ import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { Users, ScrollText, ShieldAlert, Plus, Pencil, Trash2, Clock, AlertTriangle, Wrench, Server } from "lucide-react";
 import { format } from "date-fns";
 import { AdminToolsTab } from "@/components/admin-tools-tab";
+import { GuideHelp } from "@/components/guide-help";
 import { useTranslation } from "react-i18next";
 
 export default function Admin() {
@@ -359,8 +360,9 @@ export default function Admin() {
 
       <Dialog open={createOpen} onOpenChange={setCreateOpen}>
         <DialogContent className="sm:max-w-md">
-          <DialogHeader>
+          <DialogHeader className="flex flex-row items-center justify-between gap-2">
             <DialogTitle>{t("admin.createNewUser")}</DialogTitle>
+            <GuideHelp guide="administration" label={t("admin.createNewUser")} />
           </DialogHeader>
           <div className="space-y-4 py-2">
             <div className="space-y-2">
@@ -412,8 +414,9 @@ export default function Admin() {
 
       <Dialog open={!!editUser} onOpenChange={(open) => { if (!open) { setEditUser(null); setEditPassword(""); } }}>
         <DialogContent className="sm:max-w-sm">
-          <DialogHeader>
+          <DialogHeader className="flex flex-row items-center justify-between gap-2">
             <DialogTitle>{t("admin.editUser", { username: editUser?.username })}</DialogTitle>
+            <GuideHelp guide="administration" label={t("admin.editUser", { username: editUser?.username })} />
           </DialogHeader>
           <div className="space-y-4 py-2">
             <div className="space-y-2">

artifacts/toolrate/src/pages/tools-browse.tsx

@@ -18,6 +18,7 @@ import { AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent,
 import { useBrowsePreferences, isViewMode, isDensity } from "@/hooks/use-browse-preferences";
 import { useAuth } from "@/hooks/use-auth";
 import { useWatchlist } from "@/hooks/use-watchlist";
+import { useToast } from "@/hooks/use-toast";
 import { CompareBar } from "@/components/compare-bar";
 import { useTranslation } from "react-i18next";
 import { Input } from "@/components/ui/input";
@@ -91,12 +92,20 @@ export default function ToolsBrowse() {
   const { serverView, serverDensity, localView, localDensity, persist } = useBrowsePreferences();
   const { hasFeature } = useAuth();
   const { isWatched, toggle: toggleWatchlist, canWatchlist } = useWatchlist();
+  const { toast } = useToast();
 
   const [compareIds, setCompareIds] = useState<number[]>([]);
   const [compareUpsellOpen, setCompareUpsellOpen] = useState(false);
 
   function toggleCompare(id: number) {
-    setCompareIds((prev) => (prev.includes(id) ? prev.filter((x) => x !== id) : [...prev, id]));
+    setCompareIds((prev) => {
+      if (prev.includes(id)) return prev.filter((x) => x !== id);
+      if (prev.length >= 9) {
+        toast({ title: t("browse.compareLimitReached"), variant: "destructive" });
+        return prev;
+      }
+      return [...prev, id];
+    });
   }
 
   const [search, setSearch] = useState(initialSearch);