fix(telegram): add video_note support to Telegram channel

- Add msg.video_note to media extraction chain in bot/delivery.ts
- Add placeholder detection for video notes in bot-message-context.ts
- Video notes (rounded square video messages) are now processed and downloaded like regular videos

Fixes issue where video note messages were silently dropped because they weren't in the media handling logic.

src/telegram/bot-message-context.ts

@@ -335,6 +335,7 @@ export const buildTelegramMessageContext = async ({
   let placeholder = "";
   if (msg.photo) placeholder = "<media:image>";
   else if (msg.video) placeholder = "<media:video>";
+  else if (msg.video_note) placeholder = "<media:video>";
   else if (msg.audio || msg.voice) placeholder = "<media:audio>";
   else if (msg.document) placeholder = "<media:document>";
   else if (msg.sticker) placeholder = "<media:sticker>";

src/telegram/bot/delivery.ts

@@ -368,7 +368,12 @@ export async function resolveMedia(
   }
 
   const m =
-    msg.photo?.[msg.photo.length - 1] ?? msg.video ?? msg.document ?? msg.audio ?? msg.voice;
+    msg.photo?.[msg.photo.length - 1] ??
+    msg.video ??
+    msg.video_note ??
+    msg.document ??
+    msg.audio ??
+    msg.voice;
   if (!m?.file_id) return null;
   const file = await ctx.getFile();
   if (!file.file_path) {
@@ -395,6 +400,7 @@ export async function resolveMedia(
   let placeholder = "<media:document>";
   if (msg.photo) placeholder = "<media:image>";
   else if (msg.video) placeholder = "<media:video>";
+  else if (msg.video_note) placeholder = "<media:video>";
   else if (msg.audio || msg.voice) placeholder = "<media:audio>";
   return { path: saved.path, contentType: saved.contentType, placeholder };
 }