Task 6.1 V2.0.0: copia client.py + leverage_cap.py da services/mcp-deribit
con import riscritti (mcp_common -> cerbero_mcp.common, mcp_deribit ->
cerbero_mcp.exchanges.deribit). Estratte 34 tool async (28 endpoint +
is_testnet/environment_info + helpers) in tools.py: pure logica senza
FastAPI/ACL. Audit calls per ora rimossi (TODO: cabling via router su
request.state.environment).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
AdrianoDev