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/footer.tpl

@@ -0,0 +1,42 @@
+{*
+  Footer template
+  $Id: footer.tpl,v 1.2 2013/03/12 19:13:18 andig2 Exp $
+*}
+
+<!-- {$smarty.template} -->
+
+{if !empty($pageno) && !empty($maxpageno)}
+<footer>
+	<div class="pagination-centered">
+		<ul class="pagination">
+			<li class="arrow {if $pageno <= 1}unavailable{/if}"><a href="{if $pageno <= 1}#{else}index.php?pageno={$pageno-1}{/if}">&laquo;</a></li>
+
+			{assign var=delta value=2}
+
+			{if $maxpageno > 0}
+			<li {if $pageno == 1}class="current"{/if}><a href="index.php?pageno=1">1</a></li>
+			{/if}
+
+			{if $pageno-$delta > 2}<li class="unavailable"><a href="">&hellip;</a></li>{/if}
+
+			{for $page=($pageno-$delta)|max:2 to ($pageno+$delta)|min:($maxpageno-1)}
+			<li {if $page==$pageno}class="current"{/if}><a href="index.php?pageno={$page}">{$page}</a></li>
+			{/for}
+
+			{if $pageno+$delta <= $maxpageno-2}<li class="unavailable"><a href="">&hellip;</a></li>{/if}
+
+			{if $maxpageno > 1}
+			<li {if $pageno == $maxpageno}class="current"{/if}><a href="index.php?pageno={$maxpageno}">{$maxpageno}</a></li>
+			{/if}
+			<li class="arrow {if $pageno >= $maxpageno}unavailable{/if}"><a href="{if $pageno >= $maxpageno}#{else}index.php?pageno={$pageno+1}{/if}">&raquo;</a></li>
+		</ul>
+	</div>
+</footer>
+{/if}
+
+{if $DEBUG}
+<div class="row">{$DEBUG}</div>
+{/if}
+
+</body>
+</html>