Quando Deribit risponde con {"error": {...}} su public/auth (creds errate,
scope mancante, env mismatch), il client esplodeva con KeyError: 'result' →
500 UNHANDLED_EXCEPTION sui tool privati (get_account_summary, get_positions).
Ora _authenticate solleva DeribitAuthError tipizzata, _request la converte
in error envelope coerente con il resto del flusso.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Router /mcp-deribit/* monta 34 tool (28 read + 6 write) come endpoint
POST /mcp-deribit/tools/{tool_name}, con DI per env (request.state) e
client (ClientRegistry). Write tools costruiscono creds minimale
{max_leverage, client_id} da settings per leverage cap enforcement.
Test deribit migrati: test_client.py + test_leverage_cap.py riassegnati
sotto tests/unit/exchanges/deribit/ con import rewrite mcp_* -> cerbero_mcp.*.
Skip dei legacy V1-only test_environment_info / test_server_acl / test_env_validation
(ACL e resolve_environment eliminati in V2).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
root