Send stored images to WhatsApp chats

Send stored images to WhatsApp chats

WhatsApp sends accept a stored image and use the text as its caption.
The send record includes the image name and precedes the upload, so a
repeated ID cannot upload or send again. Media errors keep safe causes
without URLs or keys.

The root asks for consent as for text sends, and image markers in tell
give children the shared pixels. The user can also ask to see a received
Telegram photo without a separate import.