fix: harden proxy edge cases and tunnel shutdown - #91

Process completed with exit code 1.

cannot use []interpreter.Interpretable{…} (value of type []interpreter.Interpretable) as []interpreter.InterpretableV2 value in argument to interpreter.NewCall

cannot use []interpreter.Interpretable{…} (value of type []interpreter.Interpretable) as []interpreter.InterpretableV2 value in argument to interpreter.NewCall

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-go@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/