STC_SECRET, database URLs and API keys are no longer inherited by MCP child processes. Test: a fake server reports its environment. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
STC_SECRET, database URLs and API keys are no longer inherited by MCP child processes. Test: a fake server reports its environment. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>