feat: group unrepairable legacy items separately in catalog audit

After a repair attempt, items whose nitro/icon assets cannot be restored
from any source are reclassified from hard errors into a dedicated
'Unrepairable (legacy)' group (info), so a fully repaired catalog can
reach 0 errors while still listing exactly what is not restorable. Adds
an unrepairable summary count and a dedicated tab in the audit UI.

src/app/admin/import/audit/audit-client.tsx

@@ -32,6 +32,12 @@ interface MissingFromSource {
 	itemName: string;
 }
 
+interface UnrepairableItem {
+	classname: string;
+	itemId: number;
+	missing: Array<"nitro" | "icon">;
+}
+
 interface AuditSummary {
 	totalItemsBase: number;
 	totalCatalogItems: number;
@@ -41,6 +47,7 @@ interface AuditSummary {
 	missingIcon: number;
 	duplicates: number;
 	missingFromSourcesTotal: number;
+	unrepairableCount: number;
 	iconsRepaired: number;
 	iconsStillMissing: number;
 	nitrosRepaired: number;
@@ -71,6 +78,7 @@ interface AuditEvent {
 	section?: string;
 	issues?: AuditIssue[];
 	missingFromSources?: MissingFromSource[];
+	unrepairable?: UnrepairableItem[];
 	summary?: AuditSummary;
 	repair?: RepairStats;
 	repairNitro?: RepairStats;
@@ -138,7 +146,9 @@ function AuditCheckbox({
 export function AuditClient() {
 	const [loading, setLoading] = useState(false);
 	const [progress, setProgress] = useState("");
-	const [activeTab, setActiveTab] = useState<"issues" | "sources">("issues");
+	const [activeTab, setActiveTab] = useState<
+		"issues" | "sources" | "unrepairable"
+	>("issues");
 	const [repairEnabled, setRepairEnabled] = useState(true);
 	const [repairNitros, setRepairNitros] = useState(true);
 	const [generateSql, setGenerateSql] = useState(false);
@@ -150,6 +160,7 @@ export function AuditClient() {
 	const [missingFromSources, setMissingFromSources] = useState<
 		MissingFromSource[]
 	>([]);
+	const [unrepairable, setUnrepairable] = useState<UnrepairableItem[]>([]);
 	const [summary, setSummary] = useState<AuditSummary | null>(null);
 	const [repairStats, setRepairStats] = useState<RepairStats | null>(null);
 	const [nitroRepairStats, setNitroRepairStats] = useState<RepairStats | null>(
@@ -185,6 +196,7 @@ export function AuditClient() {
 		setProgress("Starting audit…");
 		setIssues([]);
 		setMissingFromSources([]);
+		setUnrepairable([]);
 		setSummary(null);
 		setRepairStats(null);
 		setNitroRepairStats(null);
@@ -298,21 +310,22 @@ export function AuditClient() {
 							if (evt.type === "batch_complete") {
 								setIssues(evt.issues ?? []);
 								setMissingFromSources(evt.missingFromSources ?? []);
+								setUnrepairable(evt.unrepairable ?? []);
 								if (evt.summary) setSummary(evt.summary);
 								setCheckProgress(null);
 								setProgress("Done");
-								if (
-									evt.issues &&
-									evt.issues.filter((i) => i.severity === "error").length > 0
-								) {
-									toast.error(
-										`${evt.issues.filter((i) => i.severity === "error").length} error(s) found`,
-									);
-								} else if (
-									evt.issues &&
-									evt.issues.filter((i) => i.severity === "warning").length > 0
-								) {
+								const errCount =
+									evt.issues?.filter((i) => i.severity === "error").length ?? 0;
+								const warnCount =
+									evt.issues?.filter((i) => i.severity === "warning").length ??
+									0;
+								const legacyCount = evt.unrepairable?.length ?? 0;
+								if (errCount > 0) {
+									toast.error(`${errCount} error(s) found`);
+								} else if (warnCount > 0) {
 									toast.warning("Warnings found");
+								} else if (legacyCount > 0) {
+									toast.info(`${legacyCount} legacy item(s) can't be repaired`);
 								} else {
 									toast.success("No issues found");
 								}
@@ -529,6 +542,17 @@ export function AuditClient() {
 								sources
 							</span>
 						</div>
+						<div className="flex items-center gap-2">
+							{summary.unrepairableCount > 0 ? (
+								<AlertCircle className="w-4 h-4 text-[var(--admin-text-muted)]" />
+							) : (
+								<CheckCircle2 className="w-4 h-4 text-[var(--admin-success)]" />
+							)}
+							<span>
+								{summary.unrepairableCount} item(s) can't be repaired
+								(legacy/broken)
+							</span>
+						</div>
 						{repairStats && (
 							<div className="flex items-center gap-2 col-span-full">
 								<span className="text-xs text-muted-foreground">
@@ -690,7 +714,9 @@ export function AuditClient() {
 					</div>
 
 					{/* Tabs */}
-					{issues.length > 0 || missingFromSources.length > 0 ? (
+					{issues.length > 0 ||
+					missingFromSources.length > 0 ||
+					unrepairable.length > 0 ? (
 						<div className="border-b border-border">
 							<div className="flex gap-4">
 								<button
@@ -715,6 +741,17 @@ export function AuditClient() {
 								>
 									Missing from sources ({missingFromSources.length})
 								</button>
+								<button
+									type="button"
+									onClick={() => setActiveTab("unrepairable")}
+									className={`pb-2 text-sm font-medium border-b-2 transition-colors ${
+										activeTab === "unrepairable"
+											? "border-primary text-foreground"
+											: "border-transparent text-muted-foreground hover:text-foreground"
+									}`}
+								>
+									Unrepairable (legacy) ({unrepairable.length})
+								</button>
 							</div>
 						</div>
 					) : null}
@@ -796,6 +833,27 @@ export function AuditClient() {
 						</div>
 					)}
 
+					{/* Unrepairable (legacy) list */}
+					{activeTab === "unrepairable" && unrepairable.length > 0 && (
+						<div className="space-y-2">
+							{unrepairable.map((item) => (
+								<div
+									key={item.classname}
+									className="rounded-xl border bg-card p-3 text-sm flex items-center gap-2"
+								>
+									<AlertCircle className="w-3.5 h-3.5 text-[var(--admin-text-muted)] shrink-0" />
+									<code className="font-mono text-xs">{item.classname}</code>
+									<span className="text-xs text-muted-foreground">
+										(ID {item.itemId})
+									</span>
+									<span className="text-xs text-[var(--admin-warning)] ml-auto">
+										missing {item.missing.join(" + ")}
+									</span>
+								</div>
+							))}
+						</div>
+					)}
+
 					{activeTab === "issues" &&
 						issues.length === 0 &&
 						missingFromSources.length === 0 && (
@@ -814,6 +872,7 @@ export function AuditClient() {
 							setSummary(null);
 							setIssues([]);
 							setMissingFromSources([]);
+							setUnrepairable([]);
 							setRepairStats(null);
 							setNitroRepairStats(null);
 							setSqlText(null);