A network-wide 'N people vouch' count invites spam and means little. Now the
trust banner computes whether the peer is within YOUR circle — you vouch for
them, or someone you vouch for does (friend-of-a-friend) — via the pure
WebOfTrust rule (seeds={you}, threshold 1, distance 2). When known, the banner
turns green with 'In your circle' (else it falls back to the count).
The full member policy (threshold/distance/bootstrap) stays open (network-trust
§2); this is a deliberately loose 'people near you' heuristic.
Analyzer clean; trust cubit test adds a friend-of-a-friend vs stranger case
(run flutter test locally to confirm — the widget suite is too slow to run here).
- TrustCubit: reads how many vouch for the peer + whether YOU do; toggleVouch
certifies/revokes over TrustTransport; never vouches for self; offline-safe.
Kept simple — the full known-member rule (threshold+distance) and its
bootstrap set are still-open policy (network-trust §2); a live count + your
vouch is the honest first step.
- Chat screen now opens ONE session carrying both messaging AND trust (the
shared-connection shape), and shows a slim vouch banner: 'Vouched for by N' +
an 'I know this person' / 'You vouch for them' toggle.
- i18n en/es/pt (human words: 'I know this person', not 'certify').
Tests: 4 trust cubit + messaging + chat, 10 green; analyzer clean.
