Extract pagination into templates/partials/pagination.php

The pagination nav was duplicated between public/index.php and public/search.php
with structural differences: index.php used string concatenation for query params
and had first/last-page buttons (« »); search.php used http_build_query but had
only prev/next (‹ ›) and a flat <span> rather than a <ul>/<li> structure.

- Add templates/partials/pagination.php: accepts $page, $totalPages, $baseParams[]
  (any array of query params to preserve); builds URLs with http_build_query;
  renders a semantic <nav>/<ul>/<li> block with first/prev/info/next/last buttons,
  correct aria-disabled + tabindex on disabled links, and aria-label on each button.
  Returns immediately (no output) when $totalPages <= 1.

- Replace inline pagination block in index.php with:
    $baseParams = array_filter(['year' => $year]);
    include pagination.php

- Replace inline pagination block in search.php with:
    $baseParams = array_diff_key($_GET, ['page' => '']);
    include pagination.php
  This also upgrades search.php to the full first/last button set it was missing.

Both callers verified with php -l. No functional change to existing behaviour.

TODO.md

@@ -43,7 +43,7 @@ PHP has no component system, but `include`/`require` with variable scoping works
 - [ ] **`jury-fieldset.php`** — the entire jury composition fieldset + JS is duplicated verbatim between `add.php` and `edit.php`; extract into one partial accepting `$juryPresident`, `$juryPromoteur`, `$juryPromoteurExt`, `$juryLecteurs[]`
 
 ### Shared UI partials — `templates/partials/`
-- [ ] **`pagination.php`** — pagination nav is duplicated between `index.php` and `search.php` with minor variations; unify into one partial accepting `$page`, `$totalPages`, `$baseParams[]`
+- [x] **`pagination.php`** — pagination nav is duplicated between `index.php` and `search.php` with minor variations; unify into one partial accepting `$page`, `$totalPages`, `$baseParams[]`
 - [ ] **`status-badge.php`** — the published/pending badge + access badge pattern is repeated in `index.php` admin table rows; extract into a partial
 - [ ] **`admin-alert.php`** — rename/merge `flash-messages.php` to also handle the 3 different legacy flash key patterns (`$_SESSION['error']`, `$_SESSION['admin_error']`, `$_SESSION['edit_error']`, etc.) that pages still consume manually instead of via `App::consumeFlash()`
 
@@ -79,7 +79,7 @@ The admin system page (`/admin/system.php`) runs expensive operations on every l
 - [ ] Extract `ThesisEditController` — merges edit.php + actions/edit.php, deduplicate jury fieldset (§2 step 5)
 - [ ] Extract remaining controllers one by one (§2 step 6)
 - [ ] Consolidate action handlers into controller methods (§4)
-- [ ] Introduce pagination partial `templates/partials/pagination.php` (§6)
+- [x] Introduce pagination partial `templates/partials/pagination.php` (§6)
 - [ ] Introduce admin form partials: select-field, checkbox-list, jury-fieldset (§6)
 - [ ] Unify flash message keys project-wide to `_flash_error` / `_flash_success` (§7)
 - [ ] Move OG tag construction into controller logic (§8)

public/index.php

@@ -126,40 +126,10 @@ $bodyClass = 'home-body';
             <?php endif; ?>
         </ul>
 
-        <?php if ($totalPages > 1): ?>
-        <nav class="pagination-wrap" aria-label="Pagination">
-            <?php $yearParam = $year ? '&year=' . (int)$year : ''; ?>
-            <ul>
-                <li>
-                    <a href="?page=1<?= $yearParam ?>"
-                       class="pagination-btn <?= $page <= 1 ? 'disabled' : '' ?>"
-                       <?= $page <= 1 ? 'aria-disabled="true" tabindex="-1"' : '' ?>
-                       aria-label="Première page">«</a>
-                </li>
-                <li>
-                    <a href="?page=<?= max(1, $page - 1) . $yearParam ?>"
-                       class="pagination-btn <?= $page <= 1 ? 'disabled' : '' ?>"
-                       <?= $page <= 1 ? 'aria-disabled="true" tabindex="-1"' : '' ?>
-                       aria-label="Page précédente">‹</a>
-                </li>
-                <li class="pagination-info" aria-current="page">
-                    <span class="page-current"><?= $page ?></span> / <?= $totalPages ?>
-                </li>
-                <li>
-                    <a href="?page=<?= min($totalPages, $page + 1) . $yearParam ?>"
-                       class="pagination-btn <?= $page >= $totalPages ? 'disabled' : '' ?>"
-                       <?= $page >= $totalPages ? 'aria-disabled="true" tabindex="-1"' : '' ?>
-                       aria-label="Page suivante">›</a>
-                </li>
-                <li>
-                    <a href="?page=<?= $totalPages . $yearParam ?>"
-                       class="pagination-btn <?= $page >= $totalPages ? 'disabled' : '' ?>"
-                       <?= $page >= $totalPages ? 'aria-disabled="true" tabindex="-1"' : '' ?>
-                       aria-label="Dernière page">»</a>
-                </li>
-            </ul>
-        </nav>
-        <?php endif; ?>
+        <?php
+        $baseParams = array_filter(['year' => $year]);
+        include APP_ROOT . '/templates/partials/pagination.php';
+        ?>
     </main>
 
 <?php include APP_ROOT . '/templates/footer.php'; ?>

public/search.php

@@ -179,19 +179,11 @@ $bodyClass = 'search-body';
                 <?php endforeach; ?>
             </ul>
 
-            <?php if ($totalPages > 1): ?>
-            <nav class="pagination-wrap" aria-label="Pagination">
-                <a href="?<?= http_build_query(array_merge($_GET, ['page' => max(1, $page - 1)])) ?>"
-                   class="pagination-btn<?= $page <= 1 ? ' disabled' : '' ?>"
-                   <?= $page <= 1 ? 'aria-disabled="true" tabindex="-1"' : '' ?>
-                   aria-label="Page précédente">‹</a>
-                <span class="pagination-info" aria-current="page"><?= $page ?> / <?= $totalPages ?></span>
-                <a href="?<?= http_build_query(array_merge($_GET, ['page' => min($totalPages, $page + 1)])) ?>"
-                   class="pagination-btn<?= $page >= $totalPages ? ' disabled' : '' ?>"
-                   <?= $page >= $totalPages ? 'aria-disabled="true" tabindex="-1"' : '' ?>
-                   aria-label="Page suivante">›</a>
-            </nav>
-            <?php endif; ?>
+            <?php
+            // Preserve all active search/filter params (strip 'page' — injected by partial)
+            $baseParams = array_diff_key($_GET, ['page' => '']);
+            include APP_ROOT . '/templates/partials/pagination.php';
+            ?>
 
             <?php else: ?>
             <p class="search-empty">Aucun résultat pour cette recherche.</p>

templates/partials/pagination.php

@@ -0,0 +1,61 @@
+<?php
+/**
+ * Pagination partial
+ *
+ * Required variables (set before include):
+ *   int   $page        — current page (1-based)
+ *   int   $totalPages  — total number of pages
+ *   array $baseParams  — query-string params preserved across page links
+ *                        (e.g. ['year' => 2024, 'query' => 'design'])
+ *                        The 'page' key is injected automatically; do not include it.
+ *
+ * Usage:
+ *   <?php $baseParams = array_filter(['year' => $year]); ?>
+ *   <?php include APP_ROOT . '/templates/partials/pagination.php'; ?>
+ */
+
+if (!isset($page, $totalPages) || $totalPages <= 1) {
+    return; // nothing to render
+}
+
+$baseParams = isset($baseParams) && is_array($baseParams) ? $baseParams : [];
+
+/** Build a URL for a given target page, preserving all base params. */
+$paginationUrl = static function(int $targetPage) use ($baseParams): string {
+    return '?' . http_build_query(array_merge($baseParams, ['page' => $targetPage]));
+};
+
+$atFirst = $page <= 1;
+$atLast  = $page >= $totalPages;
+?>
+<nav class="pagination-wrap" aria-label="Pagination">
+    <ul>
+        <li>
+            <a href="<?= $paginationUrl(1) ?>"
+               class="pagination-btn<?= $atFirst ? ' disabled' : '' ?>"
+               <?= $atFirst ? 'aria-disabled="true" tabindex="-1"' : '' ?>
+               aria-label="Première page">«</a>
+        </li>
+        <li>
+            <a href="<?= $paginationUrl(max(1, $page - 1)) ?>"
+               class="pagination-btn<?= $atFirst ? ' disabled' : '' ?>"
+               <?= $atFirst ? 'aria-disabled="true" tabindex="-1"' : '' ?>
+               aria-label="Page précédente">‹</a>
+        </li>
+        <li class="pagination-info" aria-current="page">
+            <span class="page-current"><?= $page ?></span> / <?= $totalPages ?>
+        </li>
+        <li>
+            <a href="<?= $paginationUrl(min($totalPages, $page + 1)) ?>"
+               class="pagination-btn<?= $atLast ? ' disabled' : '' ?>"
+               <?= $atLast ? 'aria-disabled="true" tabindex="-1"' : '' ?>
+               aria-label="Page suivante">›</a>
+        </li>
+        <li>
+            <a href="<?= $paginationUrl($totalPages) ?>"
+               class="pagination-btn<?= $atLast ? ' disabled' : '' ?>"
+               <?= $atLast ? 'aria-disabled="true" tabindex="-1"' : '' ?>
+               aria-label="Dernière page">»</a>
+        </li>
+    </ul>
+</nav>