Initial commit: RSS feed dashboard aggregating YouTube, Reddit and RT

- PHP 8 + PDO SQLite cache with on-demand TTL refresh and dedup by link hash
- laminas-feed + Guzzle for RSS/Atom parsing and HTTP
- Bootstrap 5 UI with source and time-range filters, AJAX load-more
- User cron-free deployment under Apache/php-fpm; .htaccess hardening

index.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+/** @var array<string, mixed> $app */
+$app = require __DIR__ . '/src/bootstrap.php';
+
+$config = $app['config'];
+$service = $app['service'];
+
+$refresh = $service->refreshStale();
+
+$sources = $service->sources();
+$activeSource = $_GET['source'] ?? null;
+if (!is_string($activeSource) || !in_array($activeSource, $sources, true)) {
+    $activeSource = null;
+}
+
+$ranges = $config['ranges'] ?? [];
+$activeRange = $_GET['range'] ?? '';
+if (!is_string($activeRange) || !array_key_exists($activeRange, $ranges)) {
+    $activeRange = '';
+}
+$since = $activeRange !== '' ? gmdate('c', time() - (int) $ranges[$activeRange]) : null;
+
+$page = $service->page($activeSource, 1, (int) $config['page_size'], $since);
+
+echo App\View::render('layout', [
+    'config' => $config,
+    'sources' => $sources,
+    'activeSource' => $activeSource,
+    'activeRange' => $activeRange,
+    'page' => $page,
+    'refresh' => $refresh,
+]);