Add secret injection support for external PostgreSQL connections

Author: tobyschachman Channel: #general Link: https://discord.com/channels/1405685085923049482/1405686123908567141/1498829402673254560

Description

Request to add a secret-injection solution for connecting to external PostgreSQL databases, similar to the existing HTTP proxy integration.

The desired behavior is that agents cannot accidentally read database connection strings, keeping all secrets unreadable from inside the VM.

Context

User is looking for a way to securely pass PostgreSQL credentials to agents without exposing them to the execution environment, similar to how the HTTP proxy integration handles secrets injection.

Notes

• Currently, there doesn't appear to be a documented secret-injection solution for database connections
• The HTTP proxy integration serves as a reference implementation for the desired pattern
• This would be a security hygiene improvement for agents that need external database access