Summary

This fixes dropped long-running public database connections by removing the hardcoded 10-minute idle timeout from generated nginx stream proxy config.

Changes

• Use proxy_timeout 0; for public database stream proxy config generation.
• Add a unit test for StartDatabaseProxy to verify the generated nginx config no longer applies a 10-minute idle timeout.

Notes

• Base branch: next
• Commit author/PR author: RyanD66

/claim #7743