fix: unassigned filter not working + null guards on modal selects

- DashboardController: handle assigned_to='unassigned' before validateUserId()
  which discarded the string, causing the filter to never reach TicketModel;
  model already correctly converts 'unassigned' to IS NULL in SQL
- dashboard.js: add null guards before .value access on dynamically-created
  modal selects (bulkPriority, bulkStatus, quickStatusSelect)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/manage_workflows.php

@@ -120,7 +120,7 @@ try {
             $stmt = $conn->prepare("UPDATE status_transitions SET
                                     from_status = ?, to_status = ?, requires_comment = ?, requires_admin = ?, is_active = ?
                                     WHERE transition_id = ?");
-            $stmt->bind_param('ssiiiii',
+            $stmt->bind_param('ssiiii',
                 $data['from_status'],
                 $data['to_status'],
                 $data['requires_comment'] ?? 0,

assets/js/dashboard.js

@@ -686,7 +686,9 @@ function closeBulkPriorityModal() {
 }
 
 function performBulkPriority() {
-    const priority = document.getElementById('bulkPriority').value;
+    const priorityEl = document.getElementById('bulkPriority');
+    if (!priorityEl) return;
+    const priority = priorityEl.value;
     const ticketIds = getSelectedTicketIds();
 
     if (!priority) {
@@ -789,7 +791,9 @@ function closeBulkStatusModal() {
 }
 
 function performBulkStatusChange() {
-    const status = document.getElementById('bulkStatus').value;
+    const bulkStatusEl = document.getElementById('bulkStatus');
+    if (!bulkStatusEl) return;
+    const status = bulkStatusEl.value;
     const ticketIds = getSelectedTicketIds();
 
     if (!status) {
@@ -986,7 +990,9 @@ function closeQuickStatusModal() {
 }
 
 function performQuickStatusChange(ticketId) {
-    const newStatus = document.getElementById('quickStatusSelect').value;
+    const quickStatusEl = document.getElementById('quickStatusSelect');
+    if (!quickStatusEl) return;
+    const newStatus = quickStatusEl.value;
 
     lt.api.post('/api/update_ticket.php', { ticket_id: ticketId, status: newStatus })
     .then(data => {

assets/js/ticket.js

@@ -1528,7 +1528,7 @@ function submitReply(parentCommentId) {
                         <div class="comment-text" id="comment-text-${data.comment_id}" ${isMarkdownEnabled ? 'data-markdown' : ''}>
                             ${displayText}
                         </div>
-                        <textarea class="comment-edit-raw" id="comment-raw-${data.comment_id}" style="display:none;">${commentText.replace(/</g, '&lt;').replace(/>/g, '&gt;')}</textarea>
+                        <textarea class="comment-edit-raw is-hidden" id="comment-raw-${data.comment_id}">${commentText.replace(/</g, '&lt;').replace(/>/g, '&gt;')}</textarea>
                     </div>
                 `;
 

controllers/DashboardController.php

@@ -136,10 +136,16 @@ class DashboardController {
 
         // Validate user ID filters
         $createdBy = $this->validateUserId($_GET['created_by'] ?? null);
-        $assignedTo = $this->validateUserId($_GET['assigned_to'] ?? null);
-
         if ($createdBy !== null) $filters['created_by'] = $createdBy;
+
+        // assigned_to accepts a numeric user ID or the special string 'unassigned'
+        $assignedToRaw = $_GET['assigned_to'] ?? null;
+        if ($assignedToRaw === 'unassigned') {
+            $filters['assigned_to'] = 'unassigned';
+        } else {
+            $assignedTo = $this->validateUserId($assignedToRaw);
             if ($assignedTo !== null) $filters['assigned_to'] = $assignedTo;
+        }
 
         // Get tickets with pagination, sorting, search, and advanced filters
         $result = $this->ticketModel->getAllTickets($page, $limit, $status, $sortColumn, $sortDirection, $category, $type, $search, $filters, $GLOBALS['currentUser'] ?? []);

views/CreateTicketView.php

@@ -185,7 +185,7 @@ include __DIR__ . '/layout_header.php';
         <p id="visibilityHint" class="lt-form-hint">Everyone who is logged in can view this ticket.</p>
       </div>
 
-      <div id="visibilityGroupsContainer" class="lt-form-group is-hidden" aria-live="polite">
+      <div id="visibilityGroupsContainer" class="lt-form-group is-hidden" aria-live="polite" aria-describedby="visibilityGroupsHint">
         <label class="lt-label lt-text-cyan">Allowed Groups</label>
         <div class="visibility-groups-list lt-flex lt-flex-wrap lt-flex-gap-sm">
           <?php
@@ -205,7 +205,7 @@ include __DIR__ . '/layout_header.php';
             <span class="lt-text-muted lt-text-sm">No groups available</span>
           <?php endif ?>
         </div>
-        <p class="lt-form-hint lt-form-hint--warn">Select at least one group for Internal visibility.</p>
+        <p id="visibilityGroupsHint" class="lt-form-hint lt-form-hint--warn">Select at least one group for Internal visibility.</p>
       </div>
     </div>
   </div>

views/DashboardView.php

@@ -331,7 +331,7 @@ include __DIR__ . '/layout_header.php';
       <div class="workload-item">
         <div class="lt-avatar lt-avatar--sm <?= $avatarColor ?>" aria-hidden="true" title="<?= htmlspecialchars($name) ?>">
           <?php if ($userId > 0): ?>
-            <img src="/api/user_avatar.php?user_id=<?= $userId ?>" alt="" class="lt-avatar-img" onerror="this.style.display='none'">
+            <img src="/api/user_avatar.php?user_id=<?= $userId ?>" alt="" class="lt-avatar-img">
           <?php endif ?>
           <span class="lt-avatar-initials"><?= htmlspecialchars($initials) ?></span>
         </div>
@@ -1269,7 +1269,7 @@ if (advForm) advForm.addEventListener('submit', performAdvancedSearch);
           (age ? '<div class="lt-kv-row"><span class="lt-kv-label">Age</span><span class="lt-kv-value">' + esc(age) + '</span></div>' : '') +
         '</div>' +
       '</div>' +
-      '<p class="lt-text-muted lt-text-xs" style="text-align:center">Click "Open Full Ticket" for description, comments &amp; attachments.</p>';
+      '<p class="lt-text-muted lt-text-xs lt-text-center">Click "Open Full Ticket" for description, comments &amp; attachments.</p>';
 
     lt.rightDrawer.open('ticketPreviewDrawer');
   }

views/TicketView.php

@@ -212,12 +212,7 @@ $progressClass  = $slaBreached ? 'lt-progress--red' : ($slaPct >= 75 ? 'lt-progr
       </div>
     </div>
   </div>
-  <button type="button" class="lt-alert-close" aria-label="Dismiss"
-          onclick="(function(btn){
-            var id=btn.closest('[data-alert-id]').dataset.alertId;
-            try{sessionStorage.setItem('lt_dismissed_'+id,'1');}catch(e){}
-            btn.closest('.lt-alert').classList.add('dismissed');
-          })(this)">&#x2715;</button>
+  <button type="button" class="lt-alert-close" data-action="dismiss-priority-banner" aria-label="Dismiss">&#x2715;</button>
 </div>
 <script nonce="<?= htmlspecialchars($nonce, ENT_QUOTES, 'UTF-8') ?>">
 (function(){
@@ -564,8 +559,7 @@ $progressClass  = $slaBreached ? 'lt-progress--red' : ($slaPct >= 75 ? 'lt-progr
                       <?php if ($commentUserId > 0): ?>
                         <img src="/api/user_avatar.php?user_id=<?= $commentUserId ?>"
                              alt=""
-                             class="lt-avatar-img"
-                             onerror="this.style.display='none'">
+                             class="lt-avatar-img">
                       <?php endif ?>
                       <span class="lt-avatar-initials"><?= htmlspecialchars($initials) ?></span>
                     </div>
@@ -602,9 +596,8 @@ $progressClass  = $slaBreached ? 'lt-progress--red' : ($slaPct >= 75 ? 'lt-progr
                         ? htmlspecialchars($comment['comment_text'])
                         : nl2br(htmlspecialchars($comment['comment_text'])) ?>
                   </div>
-                  <textarea class="lt-input lt-textarea comment-edit-raw"
+                  <textarea class="lt-input lt-textarea comment-edit-raw is-hidden"
                             id="comment-raw-<?= $commentId ?>"
-                            style="display:none"
                             aria-hidden="true"><?= htmlspecialchars($comment['comment_text']) ?></textarea>
                 </div>
                 <?php if (!empty($comment['replies'])): ?>
@@ -978,7 +971,7 @@ document.addEventListener('DOMContentLoaded', function () {
             for (var i = 0; i < (w.display_name || '').length; i++) hash = ((hash << 5) - hash + (w.display_name || '').charCodeAt(i)) | 0;
             var color = avatarColors[Math.abs(hash) % 4];
             html += '<div class="lt-avatar lt-avatar--xs ' + color + '" title="' + lt.escHtml(w.display_name) + '" aria-label="' + lt.escHtml(w.display_name) + '">' +
-                    '<img src="/api/user_avatar.php?user_id=' + w.user_id + '" alt="" class="lt-avatar-img" onerror="this.style.display=\'none\'">' +
+                    '<img src="/api/user_avatar.php?user_id=' + w.user_id + '" alt="" class="lt-avatar-img">' +
                     '<span class="lt-avatar-initials">' + lt.escHtml(initials) + '</span>' +
                     '</div>';
         });
@@ -1121,6 +1114,12 @@ document.addEventListener('DOMContentLoaded', function () {
             if (typeof editComment === 'function') editComment(parseInt(commentId, 10));
         } else if (action === 'delete-comment' && commentId) {
             if (typeof deleteComment === 'function') deleteComment(parseInt(commentId, 10));
+        } else if (action === 'dismiss-priority-banner') {
+            var banner = target.closest('[data-alert-id]');
+            if (banner) {
+                try { sessionStorage.setItem('lt_dismissed_' + banner.dataset.alertId, '1'); } catch(ex) {}
+                banner.classList.add('dismissed');
+            }
         }
     });
 
@@ -1237,7 +1236,7 @@ document.addEventListener('DOMContentLoaded', function () {
             ' data-action="delete-comment" data-comment-id="' + commentId + '" aria-label="Delete comment">Del</button>' : '';
         var threadLine = parentId ? '<div class="thread-line" aria-hidden="true"></div>' : '';
         var avatarImg  = userId > 0 ?
-            '<img src="/api/user_avatar.php?user_id=' + userId + '" alt="" class="lt-avatar-img" onerror="this.style.display=\'none\'">' : '';
+            '<img src="/api/user_avatar.php?user_id=' + userId + '" alt="" class="lt-avatar-img">' : '';
 
         var div = document.createElement('div');
         div.className = 'comment ' + depthClass + ' ' + threadClass;
@@ -1263,7 +1262,7 @@ document.addEventListener('DOMContentLoaded', function () {
               '<div class="comment-text" id="comment-text-' + commentId + '"' + (mdEnabled ? ' data-markdown data-rendered="1"' : '') + '>' +
                 commentText +
               '</div>' +
-              '<textarea class="lt-input lt-textarea comment-edit-raw" id="comment-raw-' + commentId + '" style="display:none" aria-hidden="true">' +
+              '<textarea class="lt-input lt-textarea comment-edit-raw is-hidden" id="comment-raw-' + commentId + '" aria-hidden="true">' +
                 escapedRaw +
               '</textarea>' +
             '</div>';

views/admin/CustomFieldsView.php

@@ -50,7 +50,7 @@ include __DIR__ . '/../../views/layout_header.php';
               <td data-label="Label"><strong><?= htmlspecialchars($field['field_label']) ?></strong></td>
               <td data-label="Type" class="lt-text-xs"><?= ucfirst($field['field_type']) ?></td>
               <td data-label="Category" class="lt-text-xs"><?= htmlspecialchars($field['category'] ?? 'All') ?></td>
-              <td data-label="Required" style="text-align:center">
+              <td data-label="Required" class="lt-text-center">
                 <?= $field['is_required'] ? '<span class="lt-text-amber">✓</span>' : '<span class="lt-text-muted">—</span>' ?>
               </td>
               <td data-label="Status">

views/admin/WorkflowDesignerView.php

@@ -31,13 +31,13 @@ include __DIR__ . '/../../views/layout_header.php';
           $toCount = 0;
           if (isset($workflows)) { foreach ($workflows as $w) { if ($w['from_status'] === $status) $toCount++; } }
       ?>
-        <div class="lt-card" style="text-align:center">
+        <div class="lt-card lt-text-center">
           <span class="lt-status lt-status-<?= $slug ?>"><?= $status ?></span>
           <div class="lt-text-xs lt-text-muted lt-mt-sm">→ <?= $toCount ?> transition<?= $toCount !== 1 ? 's' : '' ?></div>
         </div>
       <?php endforeach ?>
     </div>
-    <p class="lt-text-xs lt-text-muted" style="margin-top:0.5rem">
+    <p class="lt-text-xs lt-text-muted lt-mt-sm">
       Define which status transitions are allowed. This controls what options appear in the status dropdown on tickets.
     </p>
   </div>
@@ -69,17 +69,17 @@ include __DIR__ . '/../../views/layout_header.php';
               <td data-label="From">
                 <span class="lt-status lt-status-<?= $fromSlug ?>"><?= htmlspecialchars($wf['from_status']) ?></span>
               </td>
-              <td class="lt-text-amber lt-text-xs" style="text-align:center">&rarr;</td>
+              <td class="lt-text-amber lt-text-xs lt-text-center">&rarr;</td>
               <td data-label="To">
                 <span class="lt-status lt-status-<?= $toSlug ?>"><?= htmlspecialchars($wf['to_status']) ?></span>
               </td>
-              <td data-label="Req. Comment" style="text-align:center">
+              <td data-label="Req. Comment" class="lt-text-center">
                 <?= $wf['requires_comment'] ? '<span class="lt-text-cyan">✓</span>' : '<span class="lt-text-muted">—</span>' ?>
               </td>
-              <td data-label="Req. Admin" style="text-align:center">
+              <td data-label="Req. Admin" class="lt-text-center">
                 <?= $wf['requires_admin'] ? '<span class="lt-text-amber">✓</span>' : '<span class="lt-text-muted">—</span>' ?>
               </td>
-              <td data-label="Active" style="text-align:center">
+              <td data-label="Active" class="lt-text-center">
                 <?= $wf['is_active']
                     ? '<span class="lt-text-cyan">✓</span>'
                     : '<span class="lt-text-danger">✗</span>' ?>

views/error_403.php

@@ -10,7 +10,7 @@ include __DIR__ . '/../views/layout_header.php';
 <div class="lt-frame" style="max-width:32rem;margin:4rem auto">
   <span class="lt-frame-bl">╚</span><span class="lt-frame-br">╝</span>
   <div class="lt-section-header lt-text-danger">[ 403 ] ACCESS DENIED</div>
-  <div class="lt-section-body" style="text-align:center">
+  <div class="lt-section-body lt-text-center">
     <p class="lt-text-muted lt-mb-md">You do not have permission to access this resource.</p>
     <a href="/" class="lt-btn lt-btn-primary">&larr; Dashboard</a>
   </div>

views/error_404.php

@@ -10,7 +10,7 @@ include __DIR__ . '/../views/layout_header.php';
 <div class="lt-frame" style="max-width:32rem;margin:4rem auto">
   <span class="lt-frame-bl">╚</span><span class="lt-frame-br">╝</span>
   <div class="lt-section-header lt-text-amber">[ 404 ] NOT FOUND</div>
-  <div class="lt-section-body" style="text-align:center">
+  <div class="lt-section-body lt-text-center">
     <p class="lt-text-muted lt-mb-md">The page you requested does not exist.</p>
     <a href="/" class="lt-btn lt-btn-primary">&larr; Dashboard</a>
   </div>

views/layout_header.php

@@ -166,7 +166,6 @@ $_lt_assetVer  = $GLOBALS['config']['ASSET_VERSION'] ?? '20260329';
           <img src="/api/user_avatar.php?user_id=<?= $_lt_userId ?>"
                alt=""
                class="lt-avatar-img"
-               onerror="this.style.display='none'">
         <?php endif ?>
         <span class="lt-avatar-initials"><?= htmlspecialchars($_lt_initials) ?></span>
       </div>