Error tests, FK violations fix

- ErrorHandler tests: 77 assertions covering FK extraction, normalization, dedup, edge cases. Fix FK table map for child tables.
- Fix FK violation: (int)null → 0 in createThesis for orientation/ap/finality/license FK columns. Add FK value logging to updateThesis.
- Add CURRENT_ISSUES.md with summary of FK violation, dev debugging, and tag dedup status for next conversation

app/public/admin/actions/access-request.php

@@ -18,6 +18,7 @@ if (!isset($_POST['csrf_token'], $_SESSION['csrf_token'])
 require_once APP_ROOT . '/src/Database.php';
 require_once APP_ROOT . '/src/SmtpRelay.php';
 require_once APP_ROOT . '/src/AdminLogger.php';
+require_once APP_ROOT . '/src/ErrorHandler.php';
 
 $db     = Database::getInstance();
 $logger = AdminLogger::make();
@@ -59,7 +60,7 @@ try {
             $logger->logAccessRequest($requestId, 'approve', $request['email'], $request['title']);
             App::flash('success', "Demande approuvée. Email envoyé à {$request['email']}.");
         } catch (SmtpSendException $e) {
-            error_log('[access-request] Email delivery failed after approval: ' . $e->getMessage());
+            ErrorHandler::log('access_request_smtp', $e, ['request_id' => $requestId]);
             $logger->logAccessRequest($requestId, 'approve', $request['email'], $request['title']);
             $smtpMsg = $e->isRecipientRejected()
                 ? "Demande approuvée, mais l'email n'a pas pu être délivré : adresse inconnue ({$request['email']})."
@@ -78,7 +79,7 @@ try {
     exit;
 
 } catch (Exception $e) {
-    error_log('Access request action failed: ' . $e->getMessage());
+    ErrorHandler::log('access_request', $e);
     http_response_code(500);
     echo json_encode(['success' => false, 'message' => 'Erreur lors du traitement']);
 }