1.3.6-beta.1: фото из MAX, которое Telegram не принимает как фото (HEIC/TIFF/AVIF, больше 10 000 px по сумме сторон или 20:1 — MAX пускает до 7680×7680), приходит файлом, а не «[фото]»; расширение по содержимому, а не всегда .jpg; формат и причина отказа в логе; источник пересылки — имя чата как у темы (личный диалог — собеседник), без «MAX chat N» и без повтора отправителя

src/bridge/attachments.ts

@@ -216,11 +216,34 @@ export async function downloadMaxAttachment(att: MaxAttachment, ctx: DownloadCon
   }
 }
 
+/**
+ * An image's real format from its first bytes — MAX takes JPG, PNG, GIF, TIFF, BMP and HEIC (its
+ * upload docs), Telegram's sendPhoto refuses some of them, and a HEIC named `.jpg` opens nowhere.
+ * 'jpg' when nothing matches. Pure + exported for unit testing.
+ */
+export function imageExtension(buf: Uint8Array): string {
+  const ascii = (from: number, to: number) => String.fromCharCode(...buf.subarray(from, to));
+  if (buf[0] === 0x89 && ascii(1, 4) === 'PNG') return 'png';
+  if (ascii(0, 4) === 'GIF8') return 'gif';
+  if (ascii(0, 4) === 'RIFF' && ascii(8, 12) === 'WEBP') return 'webp';
+  if (ascii(0, 2) === 'BM') return 'bmp';
+  if (ascii(0, 4) === 'II*\0' || ascii(0, 4) === 'MM\0*') return 'tiff';
+  if (ascii(4, 8) === 'ftyp') {
+    const brand = ascii(8, 12);
+    if (brand === 'avif' || brand === 'avis') return 'avif';
+    if (['heic', 'heix', 'hevc', 'hevx', 'heim', 'heis', 'mif1', 'msf1'].includes(brand)) return 'heic';
+  }
+  return 'jpg';
+}
+
+/** Image formats Telegram doesn't take as a photo — they go as a file straight away instead of a doomed sendPhoto. */
+export const PHOTO_AS_FILE = new Set(['heic', 'tiff', 'avif']);
+
 async function downloadAttachmentOrThrow(att: MaxAttachment, ctx: DownloadContext): Promise<DownloadedAttachment | null> {
   if (att._type === 'PHOTO' && att.baseUrl && att.photoToken) {
     const buffer = await downloadUrl(att.baseUrl + att.photoToken);
     if (!buffer) return null;
-    return { buffer, filename: `photo_${String(att.photoId ?? Date.now())}.jpg`, kind: 'photo' };
+    return { buffer, filename: `photo_${String(att.photoId ?? Date.now())}.${imageExtension(buffer)}`, kind: 'photo' };
   }
 
   // Animated stickers carry a `lottieUrl`: gzip-compressed Lottie JSON that is already a valid

src/bridge/sync.ts

@@ -19,6 +19,7 @@ import {
   KEYBOARD_GEO,
   KEYBOARD_CONTACT,
   pressableButton,
+  PHOTO_AS_FILE,
   type MaxAttachment,
   type DownloadContext,
 } from './attachments.js';
@@ -697,7 +698,21 @@ async function sendOneAttachment(
     return withFloodRetry(() => bot.telegram.sendMessage(groupId, describeAttachment(att), opts));
   }
   const source = { source: downloaded.buffer, filename: downloaded.filename };
-  if (kind === 'photo') return withFloodRetry(() => bot.telegram.sendPhoto(groupId, source, opts));
+  if (kind === 'photo') {
+    // MAX takes images Telegram won't show as a photo: HEIC/TIFF (format), or past sendPhoto's
+    // 10 000 px (width + height) or 20:1 — MAX allows 7680×7680. Such a picture goes as a file
+    // instead of a «[фото]» placeholder (seen live 2026-10-13 on a user's bridge).
+    const ext = downloaded.filename.split('.').pop() ?? 'jpg';
+    if (ext !== 'jpg') logger.info(`MAX photo arrived as ${ext} (${downloaded.buffer.byteLength} bytes)`);
+    if (PHOTO_AS_FILE.has(ext)) return withFloodRetry(() => bot.telegram.sendDocument(groupId, source, opts));
+    try {
+      return await withFloodRetry(() => bot.telegram.sendPhoto(groupId, source, opts));
+    } catch (err) {
+      if (!isPermanentTelegramRefusal(err)) throw err;
+      logger.error(`Telegram refused a MAX photo (${ext}, ${downloaded.buffer.byteLength} bytes: ${telegramErrorText(err)}) — sending it as a file`);
+      return withFloodRetry(() => bot.telegram.sendDocument(groupId, source, opts));
+    }
+  }
   if (kind === 'video') return withFloodRetry(() => bot.telegram.sendVideo(groupId, source, opts));
   if (kind === 'video_note') {
     try {
@@ -835,6 +850,7 @@ export async function resolveForwardContent(
   wrapperChatId: unknown,
   wrapperMessageId: unknown,
   profiles?: Map<number, ContactProfile>,
+  myAccountId: number | null = null,
 ): Promise<{ text: string; attaches: MaxAttachment[]; download: ForwardDownloadIds } | null> {
   if (link?.type !== 'FORWARD') return null;
   const original = link.message;
@@ -843,11 +859,13 @@ export async function resolveForwardContent(
   const senderName = Number.isNaN(senderId)
     ? 'неизвестно'
     : resolveContactDisplayName(senderId, await resolveProfile(max, senderId, 'forward sender', profiles));
-  const sourceChat = chats.find((c) => c && typeof c === 'object' && String((c as { id?: unknown }).id) === String(link.chatId)) as
-    | { title?: string }
-    | undefined;
-  const sourceLabel = sourceChat?.title || `MAX chat ${String(link.chatId)}`;
-  const prefix = `↩️ Переслано из «${sourceLabel}» (от ${senderName}):`;
+  // The source chat is named the way its topic is: a 1:1 dialog has no title of its own — it is the
+  // other person (seen live 2026-10-13 as «MAX chat 381718116»). No real name, or just the sender
+  // again (a forward out of a dialog with them) — the «из «…»» part is left out.
+  const sourceChat = chats.find((c) => c && typeof c === 'object' && String((c as { id?: unknown }).id) === String(link.chatId));
+  const sourceName = sourceChat ? resolveChatName(sourceChat, myAccountId, profiles ?? new Map()) : undefined;
+  const sourceLabel = sourceName && !isFallbackTitle(sourceName) && sourceName !== senderName ? sourceName : undefined;
+  const prefix = sourceLabel ? `↩️ Переслано из «${sourceLabel}» (от ${senderName}):` : `↩️ Переслано (от ${senderName}):`;
   return {
     text: original?.text ? `${prefix}\n${original.text}` : prefix,
     attaches,
@@ -1146,7 +1164,7 @@ export class ChatCatchUp {
         await chatMapStore.advanceHistoryCursor(chatId, msg.time);
         continue;
       }
-      const forwarded = await resolveForwardContent(max, chats, msg.link, chatId, msg.id, profiles);
+      const forwarded = await resolveForwardContent(max, chats, msg.link, chatId, msg.id, profiles, myAccountId);
       let text = forwarded ? forwarded.text : msg.text;
       const taken = takeKeyboard(forwarded ? forwarded.attaches : Array.isArray(msg.attaches) ? (msg.attaches as MaxAttachment[]) : [], chatId);
       let attaches = taken.attaches;
@@ -2257,7 +2275,7 @@ export function wireBridge({
     if (!opened || opened.deferred) return;
     const topicId = opened.topicId;
 
-    const forwarded = await resolveForwardContent(max, getChats(), message.link, chatId, message.id, getContactProfiles());
+    const forwarded = await resolveForwardContent(max, getChats(), message.link, chatId, message.id, getContactProfiles(), getMyAccountId());
     if (forwarded) {
       text = forwarded.text;
       attaches = forwarded.attaches;