fix: prevent remote access to API by binding to localhost #575
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What kind of change does this PR introduce?
Security improvement
This PR updates the API server configuration to bind only to 127.0.0.1, restricting access to localhost.
Previously, the API could listen on all interfaces (0.0.0.0), which allowed remote connections. Since massCode snippets may contain sensitive or private data, this could pose a serious security risk — especially in environments where a firewall is not enabled or improperly configured. Binding to localhost ensures that only local applications can access the API.