FASTAPI SPONSORS INFRASTRUCTURE GETS INTERNAL CLEANUP

The FastAPI team shipped a refactor of the sponsors data handling system [1], overhauling how banner content is processed and delivered across the documentation. This isn't a feature users will see, but it matters: the old approach was brittle enough that small changes to sponsor metadata required touching multiple parts of the codebase. The new structure centralizes sponsor data management, making it faster to onboard new sponsors and iterate on banner layouts without risking regressions. For maintainers, this reduces cognitive load. For users, it means the docs stay stable while the framework's financial sustainability engine gets more predictable. The work follows FastAPI's pattern of investing in infrastructure that scales with the project's growth.