UV in Compile Script

[nickchecan]

This pull request refactors the compile_test.sh unit test to focus on the new uv-based Python dependency management workflow, removes legacy pip bootstrapping logic, and updates the test stubs and assertions to match the new approach. The most important changes are grouped below.

Test logic and coverage updates:

• Removes the test_compile_bootstraps_pip_when_missing test and all related code, reflecting the move away from pip bootstrapping in favor of uv for dependency management. [1] [2]

• Updates and expands assertions in test_compile_succeeds_for_locked_uv_project to check for Python version installation from .python-version, creation of Python shims, correct updates to the profile script, and uv-based dependency installation steps. [1] [2]

Test environment and stub refactoring:

• Refactors the fake command setup to use a managed Python shim (managed-python3) and updates the uv stub to handle new subcommands (python install, python find, pip install, and export). Removes the old pip and ensurepip stubs. [1] [2] [3] [4]

• Ensures the .python-version file is created in relevant tests to simulate Python version pinning. [1] [2] [3]

Test runner environment:

• Updates run_compile to pass the FAKE_MANAGED_PYTHON environment variable instead of FAKE_PIP_AVAILABLE.

[github-actions]

🎉 This PR is included in version 1.0.3 🎉

The release is available on GitHub release

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