refactor: combined duration (pages + minutes), has_annexes checkbox, remove Mo

- Remove Mo option from duration, keep only pages and minutes
- Redesign duration fieldset: separate Pages input + Durée h:m inputs, both can be set together
- Fix minutes input visibility: wider inputs (6ch), proper CSS layout
- Add has_annexes checkbox to fichiers fragment + DB column + controllers
- Display duration on admin backoffice recap page
- Display duration on public partage recap page
- Update public TFE page for new combined duration format
- Migration 041: add duration_pages, duration_minutes, has_annexes columns; migrate data; recreate views

app/public/partage/recapitulatif.php

@@ -137,6 +137,22 @@ $pageTitle = 'Merci — TFE enregistré';
                 <dd><?= htmlspecialchars($thesis['keywords']) ?></dd>
                 <?php endif; ?>
 
+                <?php
+                $_hasPages2 = isset($thesis['duration_pages']) && $thesis['duration_pages'] !== null;
+                $_hasMins2  = isset($thesis['duration_minutes']) && $thesis['duration_minutes'] !== null;
+                if ($_hasPages2 || $_hasMins2):
+                    $_parts2 = [];
+                    if ($_hasPages2) $_parts2[] = $thesis['duration_pages'] . ' pages';
+                    if ($_hasMins2) {
+                        $_h2 = (int)floor($thesis['duration_minutes'] / 60);
+                        $_m2 = $thesis['duration_minutes'] % 60;
+                        $_parts2[] = $_h2 . 'h' . str_pad((string)$_m2, 2, '0', STR_PAD_LEFT);
+                    }
+                ?>
+                <dt>Durée</dt>
+                <dd><?= htmlspecialchars(implode(', ', $_parts2)) ?></dd>
+                <?php unset($_hasPages2, $_hasMins2, $_parts2, $_h2, $_m2); endif; ?>
+
                 <?php if (!empty($thesis['jury_promoteurs'])): ?>
                 <dt>Promoteur·ice(s) interne</dt>
                 <dd><?= htmlspecialchars($thesis['jury_promoteurs']) ?></dd>