fix: per_type is DB-only, main form save never touches it

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

public/index.php

@@ -540,24 +540,10 @@ $routes = [
         $geminiModel = trim($_POST['gemini_model'] ?? '');
         if ($geminiModel !== '') $config['gemini_model'] = $geminiModel;
 
-        // Per-category menus — base on DB value so form size limits can't wipe it
+        // per_type is managed exclusively via /admin/bot-config/save-per-type — copy as-is from DB
-        $perTypeMenus = $_POST['per_type_menu'] ?? [];
+        if (isset($existingConfig['per_type'])) {
-        $dbPerType    = $existingConfig['per_type'] ?? [];
+            $config['per_type'] = $existingConfig['per_type'];
-        $perType      = (is_array($dbPerType) && $dbPerType !== [] && !isset($dbPerType[0])) ? $dbPerType : [];
-        if (!empty($perTypeMenus)) {
-            // POST has per_type data — apply it on top of DB value
-            foreach ([1, 2, 3] as $cat) {
-                $mk  = trim($perTypeMenus[$cat] ?? '');
-                $key = (string)$cat;
-                if ($mk !== '') {
-                    $perType[$key] = array_merge($perType[$key] ?? [], ['greeting_menu' => $mk]);
-                } else {
-                    unset($perType[$key]['greeting_menu']);
-                    if (empty($perType[$key])) unset($perType[$key]);
-                }
-            }
         }
-        $config['per_type'] = empty($perType) ? new stdClass() : $perType;
 
         // General
         $greeting = trim($_POST['greeting'] ?? '');