Android half of ios#52, spec §6.22.
🔴 Decoded before §6.9's reaction path, which requires `about`. A story
reaction carries `sre` instead — a story is not in the conversation and
has no `mid` there, so one carrying `re` would fold onto whatever message
happened to share that id, or onto nothing. Falling through would leave
it unhandled and drawn as an empty line in the thread. Tested both ways,
including that an ordinary thread reaction still decodes as before.
⚠️ Its own disclosure and its own stored key. A reaction reveals that you
watched exactly as a reply does; what differs is the deliberation. A
reply is typed. A reaction is one tap on a story already filling the
screen, so an account told about replies has been warned about the
considered case and not the careless one.
⚠️ The row does not share a gesture with anything that navigates: an
acknowledgement delivered by a mis-tap is a disclosure the person did not
make.
Branched from feat/story-replies, which carries the `sre` plumbing this
reuses.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
