Rename author_email→contact_interne, author_show_contact→contact_public across view/controllers/templates

- v_theses_full: author_email→contact_interne, author_show_contact→contact_public
- Updated schema.sql and live DB view
- Renamed all PHP variables: currentAuthorEmail→contactInterne, currentAuthorShowContact→contactPublic
- Restored contact_interne backoffice field with proper wiring (takes precedence over mail field)
- Updated admin/add.php, admin/edit.php, partage/index.php, public/tfe.php templates

app/templates/partials/form/form.php

@@ -45,8 +45,8 @@
  *   array   $currentFiles       — existing thesis files for edit mode
  *   ?string $currentContextNote — existing context note for edit mode
  *   array   $currentRaw         — raw thesis row for edit mode
- *   ?string $currentAuthorShowContact — author show_contact flag for edit mode
- *   ?string $currentAuthorEmail — author email for edit mode
+ *   ?string $contactPublic  — contact visibility flag for edit mode
+ *   ?string $contactInterne — contact email for edit mode
  *
  * Website:
  *   string $existingWebsiteUrl
@@ -159,7 +159,7 @@ $checkedFormatsForSiteWeb = $checkedFormatsForSiteWeb ?? [];
                 <label class="admin-checkbox-label">
                     <input type="checkbox" name="contact_public" value="1"
                            <?= !empty($formData["contact_public"]) ||
-                           ($currentAuthorShowContact ?? false)
+                           ($contactPublic ?? false)
                                ? "checked"
                                : "" ?>>
                     Rendre le contact visible publiquement sur la fiche du TFE
@@ -511,7 +511,16 @@ $checkedFormatsForSiteWeb = $checkedFormatsForSiteWeb ?? [];
                 <small>Case logistique : cocher si un exemplaire physique est disponible à l'ERG.</small>
             </div>
 
-            <!-- 7. Publication -->
+            <!-- 7. Contact interne -->
+            <div class="admin-form-group">
+                <label for="contact_interne">Contact interne :</label>
+                <input type="email" id="contact_interne" name="contact_interne"
+                       value="<?= htmlspecialchars($contactInterne ?? $formData['contact_interne'] ?? '') ?>"
+                       placeholder="ton.email@exemple.be">
+                <small>Adresse de contact interne (non visible publiquement). Peut être laissé vide.</small>
+            </div>
+
+            <!-- 8. Publication -->
             <div class="admin-form-group">
                 <label class="admin-checkbox-label">
                     <input type="checkbox" name="is_published" value="1"