feat: add .nitro upload + sync-all + repair-icons features

- Upload .nitro bundles directly with full DB, catalog, and furnidata integration
- Generate SQL migration files on upload (optional)
- Auto-sync missing furniture from all configured clone sources (SSE batch)
- Repair missing icons by extracting from local .nitro or downloading from sources
- All behind ASSETS_IMPORT permission

src/app/admin/import/repair-icons/page.tsx

@@ -0,0 +1,26 @@
+import { redirect } from "next/navigation";
+import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
+import { RepairIconsClient } from "./repair-icons-client";
+
+export default async function RepairIconsPage() {
+	const { session, permissions } = await getAdminContext();
+	if (!canAccess(permissions, PERMS.ASSETS_IMPORT, session.user.rank)) {
+		redirect("/admin");
+	}
+
+	return (
+		<div className="space-y-6">
+			<div>
+				<h1 className="text-2xl font-bold tracking-tight">
+					Repair Missing Icons
+				</h1>
+				<p className="text-muted-foreground mt-1">
+					Scan all existing furniture and download any missing icon files. Icons
+					are extracted from local .nitro bundles or fetched from configured
+					clone sources.
+				</p>
+			</div>
+			<RepairIconsClient />
+		</div>
+	);
+}

src/app/admin/import/repair-icons/repair-icons-client.tsx

@@ -0,0 +1,159 @@
+"use client";
+
+import { ImageIcon, Loader2, Wrench } from "lucide-react";
+import { useCallback, useState } from "react";
+import { toast } from "sonner";
+import { Button } from "@/components/ui/button";
+import { adminFetch } from "@/lib/admin-fetch";
+
+interface RepairEvent {
+	type: string;
+	classname?: string;
+	status?: string;
+	succeeded?: number;
+	failed?: number;
+}
+
+export function RepairIconsClient() {
+	const [running, setRunning] = useState(false);
+	const [progress, setProgress] = useState<{
+		done: number;
+		total: number;
+	} | null>(null);
+	const [log, setLog] = useState<string[]>([]);
+	const [result, setResult] = useState<{
+		succeeded: number;
+		failed: number;
+	} | null>(null);
+
+	const startRepair = useCallback(async () => {
+		setRunning(true);
+		setProgress(null);
+		setLog([]);
+		setResult(null);
+
+		try {
+			const res = await adminFetch("/api/admin/import/furni/repair-icons", {
+				method: "POST",
+			});
+
+			if (!res.body) {
+				toast.error("No response stream");
+				setRunning(false);
+				return;
+			}
+
+			const reader = res.body.getReader();
+			const decoder = new TextDecoder();
+			let buf = "";
+			let succeeded = 0;
+			let failed = 0;
+			let totalItems = 0;
+
+			while (true) {
+				const { value, done: streamDone } = await reader.read();
+				if (streamDone) break;
+				buf += decoder.decode(value, { stream: true });
+				const parts = buf.split("\n\n");
+				buf = parts.pop() ?? "";
+				for (const part of parts) {
+					if (!part.startsWith("data: ")) continue;
+					try {
+						const evt = JSON.parse(part.slice(6)) as RepairEvent;
+						if (
+							evt.type === "item_progress" &&
+							(evt.status === "done" || evt.status === "failed")
+						) {
+							totalItems++;
+							if (evt.status === "done") succeeded++;
+							else failed++;
+							setProgress({ done: succeeded + failed, total: totalItems });
+							setLog((prev) => [
+								...prev,
+								`${evt.status === "done" ? "✓" : "✗"} ${evt.classname ?? ""}`,
+							]);
+						}
+						if (evt.type === "batch_complete") {
+							succeeded = evt.succeeded ?? succeeded;
+							failed = evt.failed ?? failed;
+						}
+					} catch {
+						// skip parse errors
+					}
+				}
+			}
+
+			setResult({ succeeded, failed });
+			if (succeeded > 0) toast.success(`${succeeded} icons repaired`);
+			if (failed > 0) toast.error(`${failed} icons could not be obtained`);
+		} catch {
+			toast.error("Repair request failed");
+		} finally {
+			setRunning(false);
+		}
+	}, []);
+
+	return (
+		<div className="space-y-4">
+			{!result && (
+				<Button onClick={startRepair} disabled={running} size="lg">
+					{running ? (
+						<Loader2 className="w-4 h-4 animate-spin mr-2" />
+					) : (
+						<Wrench className="w-4 h-4 mr-2" />
+					)}
+					{running
+						? `Repairing… ${progress ? `${progress.done}/${progress.total}` : ""}`
+						: "Start Icon Repair"}
+				</Button>
+			)}
+
+			{progress && (
+				<div className="text-sm text-muted-foreground">
+					Processed {progress.done} items
+					{progress.total > 0 ? ` out of ${progress.total}` : ""}
+				</div>
+			)}
+
+			{log.length > 0 && (
+				<div className="rounded-xl border bg-card p-4 max-h-80 overflow-y-auto space-y-0.5">
+					{log.map((line) => (
+						<div key={line} className="text-xs font-mono text-muted-foreground">
+							{line}
+						</div>
+					))}
+				</div>
+			)}
+
+			{result && (
+				<div className="rounded-xl border bg-card p-5 space-y-3">
+					<div className="flex items-center gap-2">
+						<ImageIcon className="w-5 h-5 text-[var(--admin-success)]" />
+						<span className="text-lg font-semibold">Repair Complete</span>
+					</div>
+					<div className="text-sm space-y-1">
+						<p>
+							<span className="text-muted-foreground">Icons downloaded:</span>{" "}
+							{result.succeeded}
+						</p>
+						<p>
+							<span className="text-muted-foreground">Failed:</span>{" "}
+							{result.failed}
+						</p>
+					</div>
+				</div>
+			)}
+
+			{!running && !result && (
+				<div className="rounded-xl border bg-card p-6 text-center text-muted-foreground text-sm">
+					<ImageIcon className="w-10 h-10 mx-auto mb-3 opacity-40" />
+					<p>
+						Scans all furniture in the database and downloads any missing icon
+						files. Icons are extracted from local .nitro bundles or downloaded
+						from configured clone sources.
+					</p>
+				</div>
+			)}
+		</div>
+	);
+}