fix: Preserve HTTP status code in Response::json and handle 401 session expiration gracefully in loadConversations

backend/app/Core/Response.php

@@ -39,9 +39,11 @@ class Response
      * @param int $code
      * @return void
      */
-    public function json($data, int $code = 200): void
+    public function json($data, ?int $code = null): void
     {
-        $this->setStatusCode($code);
+        if ($code !== null) {
+            $this->setStatusCode($code);
+        }
         $this->setHeader('Content-Type', 'application/json; charset=utf-8');
         
         // Setup CORS headers — restrict origin to the configured allowed domain

backend/app/Views/TeacherPortal.php

@@ -660,10 +660,23 @@ class TeacherPortal
             }
         }
 
+        function getAuthToken() {
+            return localStorage.getItem('saqel_teacher_jwt') || getCookie('saqel_teacher_jwt') || '';
+        }
+
+        function getCookie(name) {
+            const v = document.cookie.match('(^|;) ?' + name + '=([^;]*)(;|$)');
+            return v ? v[2] : null;
+        }
+
         // 2. Load Conversations List via REST API
         async function loadConversations() {
-            const token = localStorage.getItem('saqel_teacher_jwt');
-            if (!token) return;
+            const token = getAuthToken();
+            const container = document.getElementById('conv_list_container');
+            if (!token) {
+                if (container) container.innerHTML = '<div style="padding: 20px; text-align: center; color: var(--text-muted); font-size: 12px;">يرجى تسجيل الدخول أولاً</div>';
+                return;
+            }
             try {
                 const res = await fetch('/api/chat/conversations', {
                     headers: { 'Authorization': 'Bearer ' + token }
@@ -674,10 +687,12 @@ class TeacherPortal
                     data = JSON.parse(text);
                 } catch (jsonErr) {
                     console.error('Conversations parse error:', jsonErr, 'Raw:', text);
-                    const container = document.getElementById('conv_list_container');
-                    if (container) {
-                        container.innerHTML = '<div style="padding: 20px; text-align: center; color: #F87171; font-size: 12px;">خطأ في معالجة البيانات</div>';
-                    }
+                    if (container) container.innerHTML = '<div style="padding: 20px; text-align: center; color: #F87171; font-size: 12px;">خطأ في معالجة البيانات</div>';
+                    return;
+                }
+
+                if (res.status === 401 || (data && data.error === 'Unauthorized')) {
+                    if (container) container.innerHTML = '<div style="padding: 20px; text-align: center; color: #F87171; font-size: 12px;">انتهت الجلسة — يرجى تسجيل الدخول مجدداً</div>';
                     return;
                 }
 
@@ -685,14 +700,12 @@ class TeacherPortal
                     renderConversations(data.data || []);
                 } else {
                     console.warn('Load convs returned error payload:', data);
-                    const container = document.getElementById('conv_list_container');
                     if (container) {
                         container.innerHTML = '<div style="padding: 20px; text-align: center; color: var(--text-muted); font-size: 12px;">' + (data.message || 'لا توجد محادثات نشطة') + '</div>';
                     }
                 }
             } catch (e) {
                 console.error('Load convs network error:', e);
-                const container = document.getElementById('conv_list_container');
                 if (container) {
                     container.innerHTML = '<div style="padding: 20px; text-align: center; color: #F87171; font-size: 12px;">تعذر تحميل المحادثات</div>';
                 }