Adds tags

BasePage.php

		<a href="?action=commits&repo=<?php echo $safeName; ?>">Commits</a>
		<a href="?action=refs&repo=<?php echo $safeName; ?>">Branches</a>
		+ <a href="?action=tags&repo=<?php echo $safeName; ?>">Tags</a>
		<?php endif; ?>

Router.php

		require_once 'GitDiff.php';
		require_once 'DiffPage.php';
		+require_once 'TagsPage.php';

		class Router {

		if ($action === 'commits') {
		return new CommitsPage($this->repositories, $currentRepo, $this->git, $hash);
		+ }
		+
		+ if ($action === 'tags') {
		+ return new TagsPage($this->repositories, $currentRepo, $this->git);
		}

TagsPage.php

		+<?php
		+class TagsPage extends BasePage {
		+ private $currentRepo;
		+ private $git;
		+
		+ public function __construct(array $repositories, array $currentRepo, Git $git) {
		+ parent::__construct($repositories);
		+ $this->currentRepo = $currentRepo;
		+ $this->git = $git;
		+ $this->title = $currentRepo['name'] . ' - Tags';
		+ }
		+
		+ public function render() {
		+ $this->renderLayout(function() {
		+ $this->renderBreadcrumbs();
		+
		+ echo '<h2>Tags</h2>';
		+ echo '<div class="refs-list">';
		+
		+ $hasTags = false;
		+ $repoParam = '&repo=' . urlencode($this->currentRepo['safe_name']);
		+
		+ $this->git->eachTag(function($name, $sha) use ($repoParam, &$hasTags) {
		+ $hasTags = true;
		+ $url = '?hash=' . $sha . $repoParam;
		+
		+ echo '<div class="ref-item">';
		+ echo '<span class="ref-type tag">Tag</span>';
		+ echo '<a href="' . $url . '" class="ref-name">' . htmlspecialchars($name) . '</a>';
		+ echo '<span class="commit-hash" style="margin-left: auto;">' . substr($sha, 0, 7) . '</span>';
		+ echo '</div>';
		+ });
		+
		+ if (!$hasTags) {
		+ echo '<div class="empty-state"><p>No tags found.</p></div>';
		+ }
		+
		+ echo '</div>'; // end refs-list
		+ }, $this->currentRepo);
		+ }
		+
		+ private function renderBreadcrumbs() {
		+ $repoUrl = '?repo=' . urlencode($this->currentRepo['safe_name']);
		+
		+ $crumbs = [
		+ '<a href="?">Repositories</a>',
		+ '<a href="' . $repoUrl . '">' . htmlspecialchars($this->currentRepo['name']) . '</a>',
		+ 'Tags'
		+ ];
		+
		+ echo '<div class="breadcrumb">' . implode(' / ', $crumbs) . '</div>';
		+ }
		+}

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