Avoid RDS proxy session pinning

[jbeard4]

Summary

• configure Sequelize to keep the default timezone so initialization avoids SET TIME ZONE
• disable client_min_messages initialization to reduce session pinning in RDS Proxy

Testing

• not run (not requested)

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Codex Task

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Invalid client_min_messages value may block connections

Postgres accepts only log-level strings for client_min_messages (e.g., warning, notice); setting dialectOptions.clientMinMessages to the boolean false means Sequelize will issue SET client_min_messages TO false during connection setup, which Postgres rejects with invalid value for parameter "client_min_messages": "false". When this runs against a Postgres backend, the app will fail to acquire a database connection instead of simply avoiding session pinning. Consider omitting the option or using a valid log level string.

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