xRocket MCP v0.5.0 — guarded CEX trading onboarding

What changed

• makes guarded xRocket order preparation and execution the primary product flow
• adds xrocket-mcp trading-config for testnet-first, order-only local setup
• adds explicit trading-config --mainnet with the separate mainnet write gate
• keeps transfers and withdrawals disabled in both generated trading templates
• teaches the hosted public MCP to route trading requests to local setup without accepting tokens
• adds a trading-first landing page, order prompts, and market-snapshot trading action
• keeps every order on the prepare → explicit approval → single-use execute path

The xRocket bearer token remains local and has broad upstream account access. Start on testnet and never paste the token into chat or the hosted endpoint.