refactor(trust): ego-centric trust replaces the global Duniter membership

The global membership rule (curated bootstrap referents + sigQty/stepMax
parameters) solved sybil-proof identity for a UBI — a problem this app
doesn't have — and its screen leaked graph jargon (npub roots, parameter
steppers). Trust is now computed from the user's own position only:
you vouch / vouched by people you know (distance <=2) / vouched by N.

- TrustCubit: drop networkMember tier, referents and params; keep the
  circle rule and the 365-day vouch expiry (renewable, self-pruning).
- Delete TrustReferents, WotSettings, TrustNetworkScreen and the bundled
  referents asset; unwire injector/bootstrap/app/chat.
- New 'Your people' screen (/your-people, from the profile): who you
  vouch for (revocable) and who vouches for you, names via ProfileCache.
- i18n: wot.* removed, yourPeople.* added (en/es/pt/ast); trust.member
  removed. Kind 30777 events on relays stay fully compatible — only the
  interpretation changes.

apps/app_seeds/lib/i18n/en.i18n.json

@@ -540,29 +540,18 @@
     "count": "Vouched for by {n}",
     "vouch": "I know this person",
     "vouched": "You vouch for them",
-    "circle": "In your circle",
-    "member": "Trusted member of the network"
+    "circle": "In your circle"
   },
-  "wot": {
-    "title": "Network of trust",
-    "open": "Network of trust",
-    "help": "How trusted membership is decided: people vouch for each other, and trust spreads outward from a set of founding roots.",
-    "roots": "Trust roots",
-    "rootsHelp": "The founding identities the network is anchored to. Add people you trust (paste their identity code); membership is measured outward from them.",
-    "noRoots": "No trust roots yet — membership can't be worked out until the network is seeded.",
-    "addRoot": "Add a trust root",
-    "rootHint": "Paste an identity code (npub…)",
-    "add": "Add",
-    "rootAdded": "Trust root added",
-    "rootInvalid": "That's not a valid identity code",
-    "remove": "Remove",
-    "params": "Advanced parameters",
-    "paramsHelp": "Duniter rules. Loosen them for a young network; tighten as it grows.",
-    "sigQty": "Vouches to become a member",
-    "stepMax": "Max distance from a root",
-    "validityDays": "Vouch validity (days)",
-    "reset": "Reset to Duniter defaults",
-    "saved": "Saved"
+  "yourPeople": {
+    "title": "Your people",
+    "help": "People you've met and vouch for, and people who vouch for you.",
+    "youVouchFor": "You vouch for",
+    "vouchesForYou": "They vouch for you",
+    "youVouchForEmpty": "You don't vouch for anyone yet. When you meet someone, open your chat with them and tap \"I know this person\".",
+    "vouchesForYouEmpty": "No one vouches for you yet",
+    "revoke": "Stop vouching",
+    "revokeConfirm": "Stop vouching for this person?",
+    "offline": "You're offline — try again when you're connected"
   },
   "notifications": {
     "newMessageFrom": "New message from {name}"