Revert "Fix RSS time filters and add draggable grid layout"

This reverts commit 4ee365cfc0.

app/api/rss/feeds/route.ts

@@ -4,13 +4,6 @@ import Parser from 'rss-parser';
 
 export const dynamic = 'force-dynamic';
 
-function normalizeDate(item: { isoDate?: string; pubDate?: string }): string | null {
-    const raw = item.isoDate || item.pubDate;
-    if (!raw) return null;
-    const d = new Date(raw);
-    return isNaN(d.getTime()) ? null : d.toISOString();
-}
-
 export async function GET() {
     const db = await getDb();
     const feeds = await db.all(`
@@ -63,7 +56,7 @@ export async function POST(req: NextRequest) {
                 feedId,
                 item.title,
                 item.link,
-                normalizeDate(item),
+                item.pubDate || item.isoDate || null,
                 item.creator || item.author || null,
                 (item.contentSnippet || item.content || '').substring(0, 500) || null
             );

app/api/rss/route.ts

@@ -30,7 +30,7 @@ export async function GET(req: NextRequest) {
     }
     if (since) {
         const sinceMap: Record<string, string> = {
-            '12h': '-12 hours',
+            '1h': '-1 hours',
             '24h': '-24 hours',
             '7d': '-7 days',
             '30d': '-30 days',