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/simpletest/collector.php

@@ -0,0 +1,122 @@
+<?php
+/**
+ * This file contains the following classes: {@link SimpleCollector},
+ * {@link SimplePatternCollector}.
+ *
+ * @author Travis Swicegood <development@domain51.com>
+ * @package SimpleTest
+ * @subpackage UnitTester
+ * @version $Id: collector.php,v 1.3 2013/02/02 11:38:59 andig2 Exp $
+ */
+
+/**
+ * The basic collector for {@link GroupTest}
+ *
+ * @see collect(), GroupTest::collect()
+ * @package SimpleTest
+ * @subpackage UnitTester
+ */
+class SimpleCollector {
+
+    /**
+     * Strips off any kind of slash at the end so as to normalise the path.
+     * @param string $path    Path to normalise.
+     * @return string         Path without trailing slash.
+     */
+    protected function removeTrailingSlash($path) {
+        if (substr($path, -1) == DIRECTORY_SEPARATOR) {
+            return substr($path, 0, -1);
+        } elseif (substr($path, -1) == '/') {
+            return substr($path, 0, -1);
+        } else {
+            return $path;
+        }
+    }
+
+    /**
+     * Scans the directory and adds what it can.
+     * @param object $test    Group test with {@link GroupTest::addTestFile()} method.
+     * @param string $path    Directory to scan.
+     * @see _attemptToAdd()
+     */
+    function collect(&$test, $path) {
+        $path = $this->removeTrailingSlash($path);
+        if ($handle = opendir($path)) {
+            while (($entry = readdir($handle)) !== false) {
+                if ($this->isHidden($entry)) {
+                    continue;
+                }
+                $this->handle($test, $path . DIRECTORY_SEPARATOR . $entry);
+            }
+            closedir($handle);
+        }
+    }
+
+    /**
+     * This method determines what should be done with a given file and adds
+     * it via {@link GroupTest::addTestFile()} if necessary.
+     *
+     * This method should be overriden to provide custom matching criteria,
+     * such as pattern matching, recursive matching, etc.  For an example, see
+     * {@link SimplePatternCollector::_handle()}.
+     *
+     * @param object $test      Group test with {@link GroupTest::addTestFile()} method.
+     * @param string $filename  A filename as generated by {@link collect()}
+     * @see collect()
+     * @access protected
+     */
+    protected function handle(&$test, $file) {
+        if (is_dir($file)) {
+            return;
+        }
+        $test->addFile($file);
+    }
+
+    /**
+     *  Tests for hidden files so as to skip them. Currently
+     *  only tests for Unix hidden files.
+     *  @param string $filename        Plain filename.
+     *  @return boolean                True if hidden file.
+     *  @access private
+     */
+    protected function isHidden($filename) {
+        return strncmp($filename, '.', 1) == 0;
+    }
+}
+
+/**
+ * An extension to {@link SimpleCollector} that only adds files matching a
+ * given pattern.
+ *
+ * @package SimpleTest
+ * @subpackage UnitTester
+ * @see SimpleCollector
+ */
+class SimplePatternCollector extends SimpleCollector {
+    private $pattern;
+
+    /**
+     *
+     * @param string $pattern   Perl compatible regex to test name against
+     *  See {@link http://us4.php.net/manual/en/reference.pcre.pattern.syntax.php PHP's PCRE}
+     *  for full documentation of valid pattern.s
+     */
+    function __construct($pattern = '/php$/i') {
+        $this->pattern = $pattern;
+    }
+
+    /**
+     * Attempts to add files that match a given pattern.
+     *
+     * @see SimpleCollector::_handle()
+     * @param object $test    Group test with {@link GroupTest::addTestFile()} method.
+     * @param string $path    Directory to scan.
+     * @access protected
+     */
+    protected function handle(&$test, $filename) {
+        if (preg_match($this->pattern, $filename)) {
+            parent::handle($test, $filename);
+        }
+    }
+}
+?>