fix(proxy): remove internal ID headers from proxy responses#4
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Remove X-Project-ID, X-Environment-ID, and X-Deployment-ID headers from proxy responses. These headers leaked sequential internal integer IDs to end users, enabling enumeration of projects/environments/deployments and exposing potential IDOR attack surface. X-Request-ID is preserved for request tracing. Operators can correlate request IDs with server-side logs for full routing context. Also update README to add transactional email and MCP server features.
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Summary
X-Project-ID,X-Environment-ID, andX-Deployment-IDheaders from proxy responses — these leaked sequential internal integer IDs to end users, enabling enumeration and exposing potential IDOR attack surfaceX-Request-IDfor request tracing — operators can correlate with server-side logs for full routing contextSecurity
The removed headers exposed internal database IDs (sequential integers) on every proxied response. This allowed external observers to: