- Image compression in an encrypted room re-encoded the *plaintext* original,
uploaded it unencrypted, and reused the original's encInfo, so the media sat
on the server in the clear AND the attachment was undecryptable. The
compressed bytes are now run through encryptFile and the synthetic upload
item carries the new encInfo (buildCompressedUploadItem, unit-tested; it can
never inherit the stale encInfo).
- Scheduled messages (MSC4140) are PUT as raw m.room.message, bypassing the
SDK encryption pipeline. The Schedule button is now hidden in encrypted
rooms, handleScheduleClick no-ops there, and scheduleMessage() itself
refuses with a clear error so no caller can regress this. README notes the
limitation.
- The GIF picker uploaded the Giphy blob unencrypted into E2EE rooms; it now
mirrors the voice/attachment path (encryptFile -> upload ciphertext ->
content.file).
Fixes#6Fixes#7Fixes#11
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA