AI/MCP integration (Model Context Protocol)

Scell.io publishes an MCP agent (`@scell/mcp-client`) exposing 43 tools consumable by MCP-compatible LLMs: Claude Desktop, Cursor, VS Code, Continue, etc. The agent lets an LLM create invoices, signatures, check compliance, download documents. Built-in B2C heuristics (detection of 'particulier', 'individual'...).