Extract HomeController from public/index.php

Move all data-fetching and view-variable assembly out of public/index.php
into a new src/HomeController.php, following the same pattern as
SearchController, TfeController, SystemController, and ThesisEditController.

HomeController::create() builds the Database singleton dependency.
HomeController::handle() encapsulates:
- GET param parsing (page, year) with safe type coercion
- Display-mode detection: default random-latest view / year-filtered /
  paginated-all theses
- All DB calls: getLatestPublishedYear, getLatestYearTheses, searchTheses,
  countSearchResults, getPublishedTheses, countPublishedTheses,
  getCoverPathsForTheses, getAvailableYears
- Batch cover-image loading for theses without a banner_path
- baseParams assembly for the pagination partial
- OG / meta tag array construction
- Graceful error handling (logs exception, returns safe empty state)
- Returns a flat array of view variables

public/index.php is now a 6-line dispatcher (require + create + handle +
extract) followed by a pure view template. Reduced from 100 to 71 lines.
All error-handling and data logic removed from the view layer entirely.

public/index.php

@@ -1,66 +1,11 @@
 <?php
 // Load configuration
 require_once __DIR__ . '/../config/bootstrap.php';
-require_once APP_ROOT . '/src/Database.php';
+require_once APP_ROOT . '/src/HomeController.php';
 
-$page = isset($_GET["page"]) ? max(1, intval($_GET["page"])) : 1;
-$year = isset($_GET["year"]) ? intval($_GET["year"]) : null;
-$itemsPerPage = 24;
-
-// Default home view: random theses from latest year (no year filter, no explicit page)
-$isDefaultView = (!$year && $page === 1);
-
-try {
-    $db = Database::getInstance();
-    $offset = ($page - 1) * $itemsPerPage;
-    $availableYears = $db->getAvailableYears();
-
-    if ($year) {
-        $itemsToLoad = $db->searchTheses(['year' => $year], $itemsPerPage, $offset);
-        $totalItems  = $db->countSearchResults(['year' => $year]);
-    } elseif ($isDefaultView) {
-        $latestYear  = $db->getLatestPublishedYear();
-        $itemsToLoad = $db->getLatestYearTheses($itemsPerPage);
-        $totalItems  = count($itemsToLoad); // no pagination on default view
-    } else {
-        $itemsToLoad = $db->getPublishedTheses($itemsPerPage, $offset);
-        $totalItems  = $db->countPublishedTheses();
-    }
-
-    $totalPages = $isDefaultView ? 1 : (int)ceil($totalItems / $itemsPerPage);
-
-    // Batch-load cover images for theses that have no banner_path
-    $coverMap = [];
-    if (!empty($itemsToLoad)) {
-        $needCover = array_column(
-            array_filter($itemsToLoad, fn($t) => empty($t['banner_path'])),
-            'id'
-        );
-        $coverMap = $db->getCoverPathsForTheses($needCover);
-    }
-} catch (Exception $e) {
-    error_log("Error loading theses: " . $e->getMessage());
-    $itemsToLoad = [];
-    $totalPages  = 0;
-    $availableYears = [];
-    $totalItems  = 0;
-    $latestYear  = null;
-    $isDefaultView = false;
-    $coverMap = [];
-}
-
-$currentNav = '';
-$pageTitle = 'Posterg – Mémoires de l\'ERG';
-$metaDescription = 'Posterg répertorie et valorise les mémoires de fin d\'études (TFE) de l\'erg – École de Recherches Graphiques de Bruxelles.';
-$ogTags = [
-    'type'        => 'website',
-    'title'       => $pageTitle,
-    'description' => $metaDescription,
-    'url'         => 'https://posterg.erg.be/',
-    'site_name'   => 'Posterg – ERG',
-];
-$extraCss = ['/assets/css/main.css'];
-$bodyClass = 'home-body';
+$controller = HomeController::create();
+$vars       = $controller->handle();
+extract($vars);
 ?>
 <?php include APP_ROOT . '/templates/head.php'; ?>
     <?php include APP_ROOT . '/templates/header.php'; ?>
@@ -126,10 +71,7 @@ $bodyClass = 'home-body';
             <?php endif; ?>
         </ul>
 
-        <?php
-        $baseParams = array_filter(['year' => $year]);
-        include APP_ROOT . '/templates/partials/pagination.php';
-        ?>
+        <?php include APP_ROOT . '/templates/partials/pagination.php'; ?>
     </main>
 
 <?php include APP_ROOT . '/templates/footer.php'; ?>