The host's "auto-share my code with" picker was session-scoped — an
in-memory exclusion set that reset to share-with-all on every launch.
Move the preference onto the friend itself: a `share: bool` on `Friend`
in friends.toml, `#[serde(default = true)]` so new friends are included
and an older file without the field loads as share-with-all. The picker
now toggles the stored flag and persists immediately (like the other
settings), and `selected_share_targets` filters on it. This drops the
parallel `share_excluded` state and is self-cleaning: removing a friend
takes their preference with them, no stale ids linger.
`upsert`'s update path leaves `share` untouched, so a name/presence
refresh can't reset the user's choice.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
molluskandClaude Opus 4.8
b0fa259187