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/test/index.php

@@ -0,0 +1,71 @@
+<?php
+
+// move out of contrib for includes
+chdir('..');
+
+require_once './core/functions.php';
+
+if (version_compare(phpversion(), '5.3') >= 0)
+    error_reporting(E_ALL ^ E_NOTICE ^ E_DEPRECATED);
+else
+    error_reporting(E_ALL ^ E_NOTICE);
+
+localnet_or_die();
+permission_or_die(PERM_ADMIN);
+
+if (!defined('SIMPLE_TEST')) define('SIMPLE_TEST', './test/simpletest/');
+
+require_once(SIMPLE_TEST . 'unit_tester.php');
+require_once(SIMPLE_TEST . 'reporter.php');
+
+function findTestCases($dir, $pattern=null)
+{
+    $res = array();
+    
+    if ($dh = @opendir($dir))
+    {
+        while (($file = readdir($dh)) !== false)
+        {
+            if (preg_match("/^test_(.+)\.php$/", $file, $matches))
+            {
+                if ($pattern && (stristr($file, $pattern) == false)) continue;
+
+                $res[$matches[1]] = $dir.'/'.$file;
+                // get meta data
+#                require_once($dir.'/'.$file);
+/*
+                $func = $engine.'Meta';
+
+                if (function_exists($func))
+                {
+                    $engines[$engine] = $func();
+                    
+                    // required php version present?
+                    if ($engines[$engine]['php'] && (version_compare(phpversion(), $engines[$engine]['php']) < 0))
+                    {
+                        unset($engines[$engine]);
+                    }    
+                }    
+*/
+            }
+        }
+        closedir($dh);
+    }
+    
+    return $res;
+}
+
+$res = findTestCases('./test', $_REQUEST['test']);
+
+echo "Starting tests.<br/>";
+
+foreach ($res as $case => $file)
+{
+    $test = new TestSuite($case);
+    $test->addFile($file);
+    $test->run(new HtmlReporter('utf-8'));
+}
+
+echo "<br/>All tests completed.<br/>";
+
+?>