Add configurable history and storage retention policies

src/routes/api/settings/retention/+server.ts

@@ -0,0 +1,11 @@
+import { json } from '@sveltejs/kit';
+import { retentionPreview, retentionControls, sampleRetentionPreview, setRetentionControl } from '$lib/server/retention.js';
+import { gameFileRetentionPreview } from '$lib/server/game-files/index.js';
+
+export function GET() {
+    return json({ policies: [...retentionPreview(),...sampleRetentionPreview(),...gameFileRetentionPreview()], controls: retentionControls() }, { headers: { 'Cache-Control': 'no-store' } });
+}
+export async function POST({ request }: { request: Request }) {
+    try { setRetentionControl(await request.json()); return json({ ok: true }); }
+    catch (error) { return json({ error: (error as Error).message }, { status: 400 }); }
+}