Document transcoded asset usage for Telegram media

Note that the service uses transcoded/optimized versions of assets
when available, not the original files.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Common/Immich Album Watcher/README.md

@@ -142,6 +142,7 @@ When enabled, photos/videos are sent as media attachments to Telegram using the
 
 - First sends a text notification message to each Telegram chat
 - Then sends photos/videos as media groups (albums) as replies to that message
+- Uses transcoded/optimized versions of assets when available (not original files)
 - Media is downloaded from Immich and uploaded to Telegram (bypasses CORS)
 - Large media lists are automatically split into multiple groups (2-10 items per group)
 - Optional chat action indicator (typing, uploading photo/video) while processing

manifest.json

@@ -1,3 +1,3 @@
 {
-  "version": "1.28.0"
+  "version": "1.28.1"
 }