v0.2.0 — Render workers and live API alignment

Added

• client.Services.R for the distinct /services/r render-worker marketplace.
• Typed multi-node worker requests and per-item create results.
• Optional organization/project context for machine-rental creation.

Fixed

• /services/mr now decodes the production per-item array response.
• Recent session rx and tx support numeric and quoted-string values.
• Smoke output no longer exposes account values or identifiers.

Compatibility

Session.RX and Session.TX now use octaspace.FlexInt64 instead of string.
Update code that uses these fields to call .Int64() or cast them to int64.