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

.gitignore

@@ -0,0 +1,7 @@
+/vendor/
+/data/
+/composer.phar
+composer-setup.php
+*.sqlite
+*.sqlite-shm
+*.sqlite-wal