Improve web_template compliance: lt.bytes.format, lt.tableNav, lt.statsFilter

- ticket.js: replace custom formatFileSize() with lt.bytes.format() from web_template base.js; remove the now-redundant local function
- DashboardView.php: add id="tickets-table" and wire lt.tableNav.init() for j/k/Enter keyboard row navigation
- DashboardView.php: add lt-stat-card class + data-filter-key/data-filter-val to open/critical/closed stat cards; wire lt.statsFilter.init() + window.lt_onStatFilter so clicking a stat card filters the ticket list

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

assets/js/ticket.js

@@ -827,7 +827,7 @@ function renderAttachments(attachments) {
                     </a>
                 </div>
                 <div class="attachment-meta">
-                    ${lt.escHtml(att.file_size_formatted || formatFileSize(att.file_size))} • ${lt.escHtml(uploaderName)} • ${uploadDate}
+                    ${lt.escHtml(att.file_size_formatted || lt.bytes.format(att.file_size))} • ${lt.escHtml(uploaderName)} • ${uploadDate}
                 </div>
             </div>
             <div class="attachment-actions">
@@ -841,17 +841,6 @@ function renderAttachments(attachments) {
     container.innerHTML = html;
 }
 
-function formatFileSize(bytes) {
-    if (bytes >= 1073741824) {
-        return (bytes / 1073741824).toFixed(2) + ' GB';
-    } else if (bytes >= 1048576) {
-        return (bytes / 1048576).toFixed(2) + ' MB';
-    } else if (bytes >= 1024) {
-        return (bytes / 1024).toFixed(2) + ' KB';
-    } else {
-        return bytes + ' bytes';
-    }
-}
 
 function deleteAttachment(attachmentId) {
     showConfirmModal(

views/DashboardView.php

@@ -183,14 +183,14 @@ $nonce = SecurityHeadersMiddleware::getNonce();
     <?php if (isset($stats)): ?>
     <div class="stats-widgets">
         <div class="stats-row">
-            <div class="stat-card stat-open">
+            <div class="stat-card lt-stat-card stat-open" data-filter-key="status" data-filter-val="Open,Pending,In Progress" title="Click to filter by open tickets">
                 <div class="stat-icon">[ # ]</div>
                 <div class="stat-content">
                     <div class="stat-value"><?php echo $stats['open_tickets']; ?></div>
                     <div class="stat-label">Open Tickets</div>
                 </div>
             </div>
-            <div class="stat-card stat-critical">
+            <div class="stat-card lt-stat-card stat-critical" data-filter-key="priority" data-filter-val="1" title="Click to filter critical tickets">
                 <div class="stat-icon">[ ! ]</div>
                 <div class="stat-content">
                     <div class="stat-value"><?php echo $stats['critical']; ?></div>
@@ -211,7 +211,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
                     <div class="stat-label">Created Today</div>
                 </div>
             </div>
-            <div class="stat-card stat-resolved">
+            <div class="stat-card lt-stat-card stat-resolved" data-filter-key="status" data-filter-val="Closed" title="Click to filter closed tickets">
                 <div class="stat-icon">[ OK ]</div>
                 <div class="stat-content">
                     <div class="stat-value"><?php echo $stats['closed_today']; ?></div>
@@ -385,7 +385,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
 
                 <!-- Table -->
                 <div class="table-wrapper">
-                <table>
+                <table id="tickets-table">
         <thead>
             <tr>
                 <?php if ($GLOBALS['currentUser']['is_admin'] ?? false): ?>
@@ -838,6 +838,29 @@ $nonce = SecurityHeadersMiddleware::getNonce();
     <script nonce="<?php echo $nonce; ?>">
         // Initialize lt keyboard defaults (ESC closes modals, Ctrl+K focuses search, ? shows help)
         if (window.lt) lt.keys.initDefaults();
+        // Enable j/k/Enter keyboard row navigation on the ticket table
+        if (window.lt) lt.tableNav.init('tickets-table');
+        // Enable stat card click-to-filter using lt.statsFilter
+        if (window.lt) lt.statsFilter.init();
+        window.lt_onStatFilter = function(key, val) {
+            const url = new URL(window.location.href);
+            if (key === null) {
+                // Toggle off — clear filter params
+                url.searchParams.delete('status');
+                url.searchParams.delete('priority_min');
+                url.searchParams.delete('priority_max');
+            } else if (key === 'status') {
+                url.searchParams.set('status', val);
+                url.searchParams.delete('priority_min');
+                url.searchParams.delete('priority_max');
+            } else if (key === 'priority') {
+                url.searchParams.set('priority_min', val);
+                url.searchParams.set('priority_max', val);
+                url.searchParams.delete('status');
+            }
+            url.searchParams.delete('page');
+            window.location.href = url.toString();
+        };
         // Event delegation for all data-action handlers
         document.addEventListener('click', function(event) {
             const target = event.target.closest('[data-action]');