feat: Add edit functionality for marketing files and update handling

marketing.php

@@ -125,6 +125,15 @@ if (isset($_GET['action'])) {
             echo $response;
             exit;
         }
+        
+        // Marketing update
+        if ($action === 'marketing_update' && $_SERVER['REQUEST_METHOD'] === 'POST') {
+            $payload = $_POST;
+            $response = ioServer('/v2/marketing_update', json_encode($payload));
+            header('Content-Type: application/json');
+            echo $response;
+            exit;
+        }
     } catch (Exception $e) {
         header('Content-Type: application/json');
         http_response_code(500);
@@ -364,6 +373,42 @@ template_header('Marketing', 'marketing');
     </div>
 </div>
 
+<!-- Edit File Modal -->
+<?php if ($update_allowed === 1): ?>
+<div id="editModal" class="modal">
+    <div class="modal-content">
+        <div class="modal-header">
+            <h3>Edit File</h3>
+            <button class="modal-close">&times;</button>
+        </div>
+        <div class="modal-body">
+            <div class="form-group">
+                <label for="editTitle">Title:</label>
+                <input type="text" id="editTitle" class="form-control" placeholder="Enter file title">
+            </div>
+            
+            <div class="form-group">
+                <label for="editFolder">Folder:</label>
+                <select id="editFolder" class="form-control">
+                    <option value="">Root Folder</option>
+                </select>
+            </div>
+            
+            <div class="form-group">
+                <label for="editTags">Tags (comma separated):</label>
+                <input type="text" id="editTags" class="form-control" placeholder="marketing, brochure, product">
+            </div>
+        </div>
+        <div class="modal-footer">
+            <button id="saveEdit" class="btn btn-primary">
+                <i class="fa fa-save"></i> Save Changes
+            </button>
+            <button class="modal-cancel btn btn-secondary">Cancel</button>
+        </div>
+    </div>
+</div>
+<?php endif; ?>
+
 <script src="./assets/marketing.js"></script>
 
 <?php