refactor: Move scheduling parameter updates to main

[zhengkezhou1]

Fix: #586

This PR refactors the handling of scheduling parameters by moving their update logic from environment variables to the main function within the scheduling package.

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[ahg-g]

Thanks for the PR, we are working on the config api in #881; all those env vars should become parameters in the configuration api.

/hold

[zhengkezhou1]

Ok, i close this PR.