Merge branch 'claude/festive-einstein-384c45'

Ego-centric trust replaces the global Duniter WoT, plus Wallapop-style
ratings v1 (kind 30778). Conflicts resolved: pubspec assets (kept
seed_saving, dropped trust referents), chat_screen (avatars/no-links
from main + rating strip and simplified TrustCubit from the branch),
strings.g.dart regenerated from merged sources.

apps/app_seeds/pubspec.yaml

@@ -132,9 +132,6 @@ flutter:
     - assets/catalog/species.json
     # Curated seed-saving guidance (pollination, isolation, difficulty…).
     - assets/catalog/seed_saving.json
-    # Web-of-trust bootstrap referents (Duniter "seeds"). Empty until real
-    # founding identities are curated; users bootstrap by adding their own.
-    - assets/trust/referents.json
     - assets/logo.png
     # Bundled so the Linux runner can use it as the GTK window icon.
     - assets/icon.png