Harden filter import: item-level validation and user feedback

importFromAyuGram now skips individual malformed entries (missing id/text)
instead of crashing, and validates the top-level structure properly.
Import shows a toast on success, empty result, or parse failure.

src/components/left/settings/SettingsAyuLike.tsx

@@ -33,7 +33,7 @@ const SettingsAyuLike = ({
   messageFilters,
   onReset,
 }: OwnProps & StateProps) => {
-  const { setSharedSettingOption } = getActions();
+  const { setSharedSettingOption, showNotification } = getActions();
   const fileInputRef = useRef<HTMLInputElement>();
   const [isClearConfirmOpen, openClearConfirm, closeClearConfirm] = useFlag(false);
 
@@ -59,11 +59,16 @@ const SettingsAyuLike = ({
     reader.onload = () => {
       try {
         const imported = importFromAyuGram(JSON.parse(reader.result as string));
-        setSharedSettingOption({
-          ayuLike: { hideSponsoredMessages, messageFilters: imported },
-        });
+        if (imported.length === 0) {
+          showNotification({ message: 'No valid filter rules found in file' });
+        } else {
+          setSharedSettingOption({
+            ayuLike: { hideSponsoredMessages, messageFilters: imported },
+          });
+          showNotification({ message: `Imported ${imported.length} filter rules` });
+        }
       } catch {
-        // Silently ignore malformed files — user will see no change
+        showNotification({ message: 'Invalid file: not a valid AyuGram filter export' });
       }
       // Reset so the same file can be re-imported
       e.target.value = '';

src/util/ayuLike/messageFilters.ts

@@ -47,16 +47,23 @@ interface AyuGramExport {
 
 export function importFromAyuGram(json: unknown): MessageFilterRule[] {
   const data = json as AyuGramExport;
-  if (!Array.isArray(data?.filters)) throw new Error('Invalid AyuGram export format');
+  if (!data || typeof data !== 'object' || !Array.isArray(data.filters)) {
+    throw new Error('Invalid AyuGram export format');
+  }
 
-  return data.filters.map((f) => ({
-    id: f.id,
-    enabled: Boolean(f.enabled),
-    reversed: Boolean(f.reversed),
-    caseInsensitive: Boolean(f.caseInsensitive),
-    regex: f.text,
-    chatIds: f.dialogId ? [String(f.dialogId)] : undefined,
-  }));
+  return data.filters.flatMap((f) => {
+    if (!f || typeof f !== 'object') return [];
+    if (typeof f.id !== 'string' || !f.id) return [];
+    if (typeof f.text !== 'string' || !f.text) return [];
+    return [{
+      id: f.id,
+      enabled: Boolean(f.enabled),
+      reversed: Boolean(f.reversed),
+      caseInsensitive: Boolean(f.caseInsensitive),
+      regex: f.text,
+      chatIds: f.dialogId ? [String(f.dialogId)] : undefined,
+    }];
+  });
 }
 
 export function exportToAyuGram(rules: MessageFilterRule[]): string {