NodeWave v0.12.1

Photos from the camera, the photo library and files, and the fix that made every real photo fail.

Fixed

• Every photo picked from a gallery or file was silently refused ("Could not read that photo", shown for four seconds): the size check took the empty result of a bounds-only decode for an unreadable file. Only the synthetic test photo, which skips that step, got through. Fixed; a 16-megapixel photo is now shrunk to 130-250 KB for a fast link and sent.
• A photo shown in the chat right after sending stayed a grey placeholder: it was looked up before its bytes were written. It now looks again.

Changed

• The photo button opens a small menu: Camera, Photo library (the system photo picker) and Files. The camera shot is handed over through a private file provider and deleted once read; the camera permission is asked when first needed.
• While a photo is prepared a line above the message field says what is going on (preparing, opening a Wi-Fi Direct link, shrinking) instead of a notice that disappears after four seconds; each step is also logged.

Debug-signed build for testing: it updates over the other NodeWave pre-releases. Not independently audited, see docs/SECURITY.md.