Greptile Summary

This PR performs a significant architectural cleanup by removing FastAPI dependency in favor of using Starlette directly. The key changes include:

1. Simplifying the __call__ method in app.py by removing ThreadPoolExecutor and FastAPI-specific code
2. Adding GLOBAL_CACHE clearing after compilation to improve memory efficiency
3. Updating dependency requirements in pyproject.toml to use Starlette >=0.47.0 instead of FastAPI

The changes are part of a larger effort to streamline the framework by removing unnecessary layers and improving memory efficiency. The removal of FastAPI indicates that the project only needs Starlette's core ASGI functionality, making the codebase leaner and more focused.

Confidence score: 4/5

1. This PR is generally safe to merge as it simplifies rather than adds complexity
2. High score given because the changes are well-focused on removing unnecessary code and dependencies
3. Files needing attention:
   • app.py: Verify that all FastAPI functionality has been properly replaced
   • Integration tests: Ensure ASGI functionality remains intact

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