Add fleet and per-host concurrency controls

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

@@ -1,5 +1,5 @@
 import { json } from '@sveltejs/kit';
-import { validateFleetSettings } from '$lib/fleet-settings.js';
+import { validateFleetSettings, concurrencyKeys, retentionKeys } from '$lib/fleet-settings.js';
 import { fleetSettings, saveFleetSettings } from '$lib/server/settings.js';
 
 export function GET() { return json(fleetSettings()); }
@@ -10,3 +10,14 @@ export async function PUT({ request }: { request: Request }) {
     catch (error) { return json({ error: (error as Error).message }, { status: 400 }); }
     return json(saveFleetSettings(settings));
 }
+
+export async function PATCH({ request }: { request: Request }) {
+    try {
+        const { section, values } = await request.json();
+        const keys = section === 'Concurrency' ? concurrencyKeys : section === 'Retention' ? retentionKeys : null;
+        if (!keys || !values || typeof values !== 'object' || Array.isArray(values)
+            || Object.keys(values).length !== keys.length || keys.some(key => !Object.hasOwn(values, key))
+            || Object.keys(values).some(key => !keys.includes(key as typeof keys[number]))) throw new Error('Provide all settings for one section.');
+        return json(saveFleetSettings({ ...fleetSettings(), ...values }));
+    } catch (error) { return json({ error: (error as Error).message }, { status: 400 }); }
+}