wan27 - Official Server-Side R Client for 'Wan27' AI Image and Video Generation

Server-side R client for the 'Wan27' (<https://wan2-7.io/>) AI image and video generation API and MCP workflow ecosystem (<https://wan2-7.io/mcp/>). Provides functions to inspect account eligibility and credit balances, list supported models and input schemas, estimate credit costs before spending, submit idempotent generation requests with explicit request IDs, and poll task states. Uses 'jsonlite' and 'curl' when installed, with a dependency-free base R fallback for offline testing and lightweight environments.