feat: add videodb media index with Docker stack

- Add videodb PHP/MySQL media collection manager (Blu-ray, DVD, CD)
- Dockerfile: PHP 8.1 + Apache with GD/mysqli/exif extensions
- docker-compose.yml: app on port 6761 + MySQL 8.0 with health checks
- docker-entrypoint.sh: auto-generates config.inc.php from env vars,
  waits for MySQL, initializes DB schema idempotently
- init-db.php: CLI schema installer using app's own prefix_query() logic
- Persistent volumes for DB, cache, and cover images

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

videodb/templates/nexgen/js/search.js

@@ -0,0 +1,34 @@
+/**
+ * Search logic
+ *
+ * @package JavaScript
+ * @author  Andreas Goetz	<cpuidle@gmx.de>
+ * @version $Id: search.js,v 1.1 2013/03/10 16:18:26 andig2 Exp $
+ */
+
+$(document).ready(function () {
+
+	$("#q").autocomplete({
+		source: function(request, response) {
+			$.ajax({
+				url: "search.php",
+				data: {
+					ajax_type: "json",
+					ajax_autocomplete_title: request.term
+				},
+				success: function(data) {
+					response($.map(data, function(item) {
+						return {
+							id: item.id,
+							value: item.title
+						}
+					}))
+				}
+			})
+		},
+		select: function(event, ui) {
+			//$("#imdbID").val(ui.item.id);
+			//$("#lookup1").click();
+		}
+	});
+});