fix: commit missing paraglide feed message JS files (were gitignored, needed force-add)

New feed_*.js and nav_feed.js outputs from npm run paraglide were not tracked
because src/lib/paraglide/.gitignore ignores everything by default. Force-add
them so CI can run svelte-check without running paraglide compile first.

Also include recentlyUpdatedBooks fallback improvements from working tree.

ui/src/routes/+page.server.ts

@@ -19,7 +19,7 @@ export const load: PageServerLoad = async ({ locals }) => {
 
 	try {
 		[recentBooks, progressList, stats] = await Promise.all([
-			recentlyUpdatedBooks(8),
+			recentlyUpdatedBooks(8).catch(() => [] as Book[]),
 			allProgress(locals.sessionId, locals.user?.id),
 			getHomeStats()
 		]);