feat(block2): trust UI — vouch for a person in chat (web of trust)

- 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.
This commit is contained in:
vjrj 2026-07-10 11:04:07 +02:00
parent 4326e79419
commit 7cba4f7fcf
10 changed files with 367 additions and 17 deletions

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/// To regenerate, run: `dart run slang`
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/// Built on 2026-07-10 at 08:58 UTC
/// Built on 2026-07-10 at 09:03 UTC
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