M12e: contract pass (pair invite kind, admin name in invite links, sync failed flag, rejection actor, device version name, template id, update check result, untouched accounts, D-027 re-stamp, PushEvent in :core:model, snackbar hosts)

Server: E-3 invite_kind; E-12 link ?from=<admin name>, E-4 passes it into kvitt://invite;
X-Kvitt-App-Version-Name stored in devices.app_version_name (migration 0003, schema 3);
OpenAPI and examples follow. Phone: :core:model, :core:fakes, :data, features and :app
updated together; goldens re-recorded for S-20 (version name) and new S-1/S-22 states.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B

contracts/examples/E-12-create-invite/response.json

@@ -3,7 +3,7 @@
   "kind": "partner",
   "target_user_id": null,
   "code": "4N8RVT2KW6ZC",
-  "link": "https://icehack.asuscomm.com:8443/i/4N8RVT2KW6ZC",
+  "link": "https://icehack.asuscomm.com:8443/i/4N8RVT2KW6ZC?from=Jacob",
   "created_at": "2026-10-17T06:30:02.004Z",
   "expires_at": "2026-10-20T06:30:02.004Z"
 }